[U-Boot,1/4] imx: add module fuse support
diff mbox series

Message ID 20190719033721.5730-1-peng.fan@nxp.com
State Superseded
Delegated to: Stefano Babic
Headers show
Series
  • [U-Boot,1/4] imx: add module fuse support
Related show

Commit Message

Peng Fan July 19, 2019, 3:22 a.m. UTC
There are different parts from one SoC. Take i.MX6ULL for example,
some part might not have ENET, some might have; some might not have
USB, some might have. The information could be got from OCOTP,
to make one image support the different parts, we need runtime
disable linux kernel dts node and uboot driver probe if the
corresponding module not exists in the part.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 arch/arm/include/asm/mach-imx/module_fuse.h | 127 +++++++++++
 arch/arm/include/asm/mach-imx/sys_proto.h   |   1 +
 arch/arm/mach-imx/Kconfig                   |   7 +
 arch/arm/mach-imx/mx6/Makefile              |   1 +
 arch/arm/mach-imx/mx6/module_fuse.c         | 322 ++++++++++++++++++++++++++++
 5 files changed, 458 insertions(+)
 create mode 100644 arch/arm/include/asm/mach-imx/module_fuse.h
 create mode 100644 arch/arm/mach-imx/mx6/module_fuse.c

Comments

Lukasz Majewski July 24, 2019, 7:48 a.m. UTC | #1
Hi Peng,

> There are different parts from one SoC. Take i.MX6ULL for example,
> some part might not have ENET, some might have; some might not have
> USB, some might have. The information could be got from OCOTP,
> to make one image support the different parts, we need runtime
> disable linux kernel dts node and uboot driver probe if the
> corresponding module not exists in the part.

If I understand correctly the concept is interesting to make the final
binary smaller.

> 
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
>  arch/arm/include/asm/mach-imx/module_fuse.h | 127 +++++++++++
>  arch/arm/include/asm/mach-imx/sys_proto.h   |   1 +
>  arch/arm/mach-imx/Kconfig                   |   7 +
>  arch/arm/mach-imx/mx6/Makefile              |   1 +
>  arch/arm/mach-imx/mx6/module_fuse.c         | 322
> ++++++++++++++++++++++++++++ 5 files changed, 458 insertions(+)
>  create mode 100644 arch/arm/include/asm/mach-imx/module_fuse.h
>  create mode 100644 arch/arm/mach-imx/mx6/module_fuse.c
> 
> diff --git a/arch/arm/include/asm/mach-imx/module_fuse.h
> b/arch/arm/include/asm/mach-imx/module_fuse.h new file mode 100644
> index 0000000000..6b93f0402e
> --- /dev/null
> +++ b/arch/arm/include/asm/mach-imx/module_fuse.h
> @@ -0,0 +1,127 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Copyright 2019 NXP
> + */
> +
> +#ifndef __MODULE_FUSE_H__
> +#define __MODULE_FUSE_H__
> +
> +enum fuse_module_type {
> +	MODULE_TSC,
> +	MODULE_ADC1,
> +	MODULE_ADC2,
> +	MODULE_SIM1,
> +	MODULE_SIM2,
> +	MODULE_FLEXCAN1,
> +	MODULE_FLEXCAN2,
> +	MODULE_SPDIF,
> +	MODULE_EIM,
> +	MODULE_SD1,
> +	MODULE_SD2,
> +	MODULE_SD3,
> +	MODULE_SD4,
> +	MODULE_QSPI1,
> +	MODULE_QSPI2,
> +	MODULE_GPMI,
> +	MODULE_APBHDMA,
> +	MODULE_LCDIF,
> +	MODULE_PXP,
> +	MODULE_CSI,
> +	MODULE_ENET1,
> +	MODULE_ENET2,
> +	MODULE_CAAM,
> +	MODULE_USB_OTG1,
> +	MODULE_USB_OTG2,
> +	MODULE_SAI2,
> +	MODULE_SAI3,
> +	MODULE_BEE,
> +	MODULE_UART1,
> +	MODULE_UART2,
> +	MODULE_UART3,
> +	MODULE_UART4,
> +	MODULE_UART5,
> +	MODULE_UART6,
> +	MODULE_UART7,
> +	MODULE_UART8,
> +	MODULE_PWM5,
> +	MODULE_PWM6,
> +	MODULE_PWM7,
> +	MODULE_PWM8,
> +	MODULE_ECSPI1,
> +	MODULE_ECSPI2,
> +	MODULE_ECSPI3,
> +	MODULE_ECSPI4,
> +	MODULE_ECSPI5,
> +	MODULE_I2C1,
> +	MODULE_I2C2,
> +	MODULE_I2C3,
> +	MODULE_I2C4,
> +	MODULE_GPT1,
> +	MODULE_GPT2,
> +	MODULE_EPIT1,
> +	MODULE_EPIT2,
> +	MODULE_EPDC,
> +	MODULE_ESAI,
> +	MODULE_DCP,
> +	MODULE_DCP_CRYPTO,
> +};
> +
> +struct fuse_entry_desc {
> +	enum fuse_module_type module;
> +	const char *node_path;
> +	u32 fuse_word_offset;
> +	u32 fuse_bit_offset;
> +	u32 status;
> +};
> +
> +#if !IS_ENABLED(CONFIG_IMX_MODULE_FUSE)
> +static inline u32 check_module_fused(enum fuse_module_type module)
> +{
> +	return 0;
> +};
> +
> +static inline u32 esdhc_fused(u32 base_addr)
> +{
> +	return 0;
> +};
> +
> +static inline u32 ecspi_fused(u32 base_addr)
> +{
> +	return 0;
> +};
> +
> +static inline u32 uart_fused(u32 base_addr)
> +{
> +	return 0;
> +};
> +
> +static inline u32 usb_fused(u32 base_addr)
> +{
> +	return 0;
> +};
> +
> +static inline u32 qspi_fused(u32 base_addr)
> +{
> +	return 0;
> +};
> +
> +static inline u32 i2c_fused(u32 base_addr)
> +{
> +	return 0;
> +};
> +
> +static inline u32 enet_fused(u32 base_addr)
> +{
> +	return 0;
> +};
> +#else
> +u32 check_module_fused(enum fuse_module_type module);
> +u32 esdhc_fused(u32 base_addr);
> +u32 ecspi_fused(u32 base_addr);
> +u32 uart_fused(u32 base_addr);
> +u32 usb_fused(u32 base_addr);
> +u32 qspi_fused(u32 base_addr);
> +u32 i2c_fused(u32 base_addr);
> +u32 enet_fused(u32 base_addr);
> +#endif
> +#endif /* __MODULE_FUSE_H__ */
> diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h
> b/arch/arm/include/asm/mach-imx/sys_proto.h index
> 79cb4e6dc9..14b016ee99 100644 ---
> a/arch/arm/include/asm/mach-imx/sys_proto.h +++
> b/arch/arm/include/asm/mach-imx/sys_proto.h @@ -9,6 +9,7 @@
>  
>  #include <asm/io.h>
>  #include <asm/mach-imx/regs-common.h>
> +#include <asm/mach-imx/module_fuse.h>
>  #include <common.h>
>  #include "../arch-imx/cpu.h"
>  
> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> index d3942f6b3f..b8625962a6 100644
> --- a/arch/arm/mach-imx/Kconfig
> +++ b/arch/arm/mach-imx/Kconfig
> @@ -27,6 +27,13 @@ config IMX_BOOTAUX
>  	help
>  	  bootaux [addr] to boot auxiliary core.
>  
> +config IMX_MODULE_FUSE
> +	bool "i.MX Module Fuse"
> +	depends on ARCH_MX6
> +	help
> +	  i.MX module fuse to runtime disable some driver, including
> +	  Linux OS device node.
> +
>  config USE_IMXIMG_PLUGIN
>  	bool "Use imximage plugin code"
>  	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX7ULP
> diff --git a/arch/arm/mach-imx/mx6/Makefile
> b/arch/arm/mach-imx/mx6/Makefile index 81e2913d14..7ea8f91e4f 100644
> --- a/arch/arm/mach-imx/mx6/Makefile
> +++ b/arch/arm/mach-imx/mx6/Makefile
> @@ -6,6 +6,7 @@
>  # (C) Copyright 2011 Freescale Semiconductor, Inc.
>  
>  obj-y	:= soc.o clock.o
> +obj-$(CONFIG_IMX_MODULE_FUSE) += module_fuse.o
>  obj-$(CONFIG_SPL_BUILD)	     += ddr.o
>  obj-$(CONFIG_MP)             += mp.o
>  obj-$(CONFIG_MX6UL_LITESOM)  += litesom.o
> diff --git a/arch/arm/mach-imx/mx6/module_fuse.c
> b/arch/arm/mach-imx/mx6/module_fuse.c new file mode 100644
> index 0000000000..417264b15c
> --- /dev/null
> +++ b/arch/arm/mach-imx/mx6/module_fuse.c
> @@ -0,0 +1,322 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2019 NXP
> + */
> +
> +#include <common.h>
> +#include <fdt_support.h>
> +#include <asm/io.h>
> +#include <asm/arch/sys_proto.h>
> +#include <asm/arch/imx-regs.h>
> +#include <asm/mach-imx/module_fuse.h>
> +#include <linux/errno.h>
> +
> +static struct fuse_entry_desc mx6_fuse_descs[] = {
> +#if defined(CONFIG_MX6ULL)
> +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
> +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
> 23},
> +	{MODULE_EPDC, "/soc/aips-bus@2200000/epdc@228c000", 0x430,
> 24},
> +	{MODULE_ESAI,
> "/soc/aips-bus@2000000/spba-bus@2000000/esai@2024000", 0x430, 25},
> +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
> 0x430, 26},
> +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
> 0x430, 27},
> +	{MODULE_SPDIF,
> "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
> +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
> +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440,
> 4},
> +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440,
> 5},
> +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440,
> 6},
> +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
> +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
> +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440,
> 8},
> +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
> +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
> +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
> 11},
> +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
> 0x440, 12},
> +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
> 0x440, 13},
> +	{MODULE_DCP, "/soc/aips-bus@2200000/dcp@2280000", 0x440, 14},
> +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
> 0x440, 15},
> +	{MODULE_SAI2,
> "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
> +	{MODULE_SAI3,
> "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
> +	{MODULE_DCP_CRYPTO, "/soc/aips-bus@2200000/dcp@2280000",
> 0x440, 25},
> +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
> 0x440, 26},
> +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
> 0x440, 26},
> +	{MODULE_UART7,
> "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440, 26},
> +	{MODULE_UART8, "/soc/aips-bus@2200000/serial@2288000",
> 0x440, 26},
> +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440,
> 27},
> +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440,
> 27},
> +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440,
> 27},
> +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440,
> 27},
> +	{MODULE_ECSPI3,
> "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440, 28},
> +	{MODULE_ECSPI4,
> "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440, 28},
> +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
> 29},
> +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
> 29},
> +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
> 30},
> +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440,
> 31},
> +	/* Paths for older imx tree: */
> +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430,
> 22},
> +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430,
> 23},
> +	{MODULE_EPDC, "/soc/aips-bus@02200000/epdc@0228c000", 0x430,
> 24},
> +	{MODULE_ESAI,
> "/soc/aips-bus@02000000/spba-bus@02000000/esai@02024000", 0x430, 25},
> +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
> 0x430, 26},
> +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
> 0x430, 27},
> +	{MODULE_SPDIF,
> "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440, 2},
> +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440,
> 3},
> +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440,
> 4},
> +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440,
> 5},
> +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
> 0x440, 6},
> +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
> +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
> +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
> 0x440, 8},
> +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440,
> 9},
> +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440,
> 10},
> +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440,
> 11},
> +	{MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000",
> 0x440, 12},
> +	{MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000",
> 0x440, 13},
> +	{MODULE_DCP, "/soc/aips-bus@02200000/dcp@02280000", 0x440,
> 14},
> +	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200",
> 0x440, 15},
> +	{MODULE_SAI2,
> "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440, 24},
> +	{MODULE_SAI3,
> "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440, 24},
> +	{MODULE_DCP_CRYPTO, "/soc/aips-bus@02200000/dcp@02280000",
> 0x440, 25},
> +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
> 0x440, 26},
> +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
> 0x440, 26},
> +	{MODULE_UART7,
> "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000", 0x440,
> 26},
> +	{MODULE_UART8, "/soc/aips-bus@02200000/serial@02288000",
> 0x440, 26},
> +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440,
> 27},
> +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440,
> 27},
> +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440,
> 27},
> +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440,
> 27},
> +	{MODULE_ECSPI3,
> "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440, 28},
> +	{MODULE_ECSPI4,
> "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440, 28},
> +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440,
> 29},
> +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440,
> 29},
> +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440,
> 30},
> +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",
> 0x440, 31}, +#elif defined(CONFIG_MX6UL)
> +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
> +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
> 23},
> +	{MODULE_SIM1, "/soc/aips-bus@2100000/sim@218c000", 0x430,
> 24},
> +	{MODULE_SIM2, "/soc/aips-bus@2100000/sim@21b4000", 0x430,
> 25},
> +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
> 0x430, 26},
> +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
> 0x430, 27},
> +	{MODULE_SPDIF,
> "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
> +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
> +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440,
> 4},
> +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440,
> 5},
> +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440,
> 6},
> +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
> +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
> +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440,
> 8},
> +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
> +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
> +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
> 11},
> +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
> 0x440, 12},
> +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
> 0x440, 13},
> +	{MODULE_CAAM, "/soc/aips-bus@2100000/caam@2140000", 0x440,
> 14},
> +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
> 0x440, 15},
> +	{MODULE_SAI2,
> "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
> +	{MODULE_SAI3,
> "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
> +	{MODULE_BEE, "/soc/aips-bus@2000000/bee@2044000", 0x440, 25},
> +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
> 0x440, 26},
> +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
> 0x440, 26},
> +	{MODULE_UART7,
> "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440, 26},
> +	{MODULE_UART8,
> "/soc/aips-bus@2000000/spba-bus@2000000/serial@2024000", 0x440, 26},
> +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440,
> 27},
> +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440,
> 27},
> +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440,
> 27},
> +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440,
> 27},
> +	{MODULE_ECSPI3,
> "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440, 28},
> +	{MODULE_ECSPI4,
> "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440, 28},
> +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
> 29},
> +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
> 29},
> +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
> 30},
> +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440,
> 31},
> +	/* Paths for older imx tree: */
> +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430,
> 22},
> +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430,
> 23},
> +	{MODULE_SIM1, "/soc/aips-bus@02100000/sim@0218c000", 0x430,
> 24},
> +	{MODULE_SIM2, "/soc/aips-bus@02100000/sim@021b4000", 0x430,
> 25},
> +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
> 0x430, 26},
> +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
> 0x430, 27},
> +	{MODULE_SPDIF,
> "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440, 2},
> +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440,
> 3},
> +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440,
> 4},
> +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440,
> 5},
> +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
> 0x440, 6},
> +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
> +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
> +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
> 0x440, 8},
> +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440,
> 9},
> +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440,
> 10},
> +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440,
> 11},
> +	{MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000",
> 0x440, 12},
> +	{MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000",
> 0x440, 13},
> +	{MODULE_CAAM, "/soc/aips-bus@02100000/caam@2140000", 0x440,
> 14},
> +	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200",
> 0x440, 15},
> +	{MODULE_SAI2,
> "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440, 24},
> +	{MODULE_SAI3,
> "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440, 24},
> +	{MODULE_BEE, "/soc/aips-bus@02000000/bee@02044000", 0x440,
> 25},
> +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
> 0x440, 26},
> +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
> 0x440, 26},
> +	{MODULE_UART7,
> "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000", 0x440,
> 26},
> +	{MODULE_UART8,
> "/soc/aips-bus@02000000/spba-bus@02000000/serial@02024000", 0x440,
> 26},
> +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440,
> 27},
> +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440,
> 27},
> +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440,
> 27},
> +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440,
> 27},
> +	{MODULE_ECSPI3,
> "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440, 28},
> +	{MODULE_ECSPI4,
> "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440, 28},
> +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440,
> 29},
> +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440,
> 29},
> +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440,
> 30},
> +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",

I'm wondering if there would be a way to avoid the hardcoded DTS patch
("/soc/aips-bus@02000000/epit@020d4000") ?

Maybe, after reading the the OCOTP values this could be found
dynamically (by using the e.g. i2c@021f8000 string) on the DTS already
stored in RAM (which is thereafter passed to Linux kernel at bootm
execution) ?

> 0x440, 31}, +#endif
> +};
> +
> +u32 check_module_fused(enum fuse_module_type module)
> +{
> +	u32 i, reg;
> +
> +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
> +		if (mx6_fuse_descs[i].module == module) {
> +			reg = readl(OCOTP_BASE_ADDR +
> +
> mx6_fuse_descs[i].fuse_word_offset);
> +			if (reg &
> BIT(mx6_fuse_descs[i].fuse_bit_offset))
> +				return 1; /* disabled */
> +			else
> +				return 0; /* enabled */
> +		}
> +	}
> +
> +	return  0; /* Not has a fuse, always enabled */
> +}
> +
> +#ifdef CONFIG_OF_SYSTEM_SETUP
> +int ft_system_setup(void *blob, bd_t *bd)
> +{
> +	const char *status = "disabled";
> +	u32 i, reg;
> +	int rc, off;
> +
> +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
> +		reg = readl(OCOTP_BASE_ADDR +
> +			    mx6_fuse_descs[i].fuse_word_offset);
> +		if (reg & BIT(mx6_fuse_descs[i].fuse_bit_offset)) {
> +			off = fdt_path_offset(blob,
> +
> mx6_fuse_descs[i].node_path); +
> +			if (off < 0)
> +				continue; /* Not found, skip it */
> +add_status:
> +			rc = fdt_setprop(blob, nodeoff, "status",
> status,
> +					 strlen(status) + 1);
> +			if (rc) {
> +				if (rc == -FDT_ERR_NOSPACE) {
> +					rc = fdt_increase_size(blob,
> 512);
> +					if (!rc)
> +						goto add_status;
> +				}
> +				printf("Unable to update property
> %s:%s, err=%s\n", mx6_fuse_descs[i].node_path, "status",
> fdt_strerror(rc));
> +			} else {
> +				printf("Modify %s disabled\n",
> mx6_fuse_descs[i].node_path);
> +			}
> +		}
> +	}
> +
> +	return 0;
> +}
> +#endif
> +
> +u32 esdhc_fused(u32 base_addr)
> +{
> +	switch (base_addr) {
> +	case USDHC1_BASE_ADDR:
> +		return check_module_fused(MODULE_SD1);
> +	case USDHC2_BASE_ADDR:
> +		return check_module_fused(MODULE_SD2);
> +#ifdef USDHC3_BASE_ADDR
> +	case USDHC3_BASE_ADDR:
> +		return check_module_fused(MODULE_SD3);
> +#endif
> +#ifdef USDHC4_BASE_ADDR
> +	case USDHC4_BASE_ADDR:
> +		return check_module_fused(MODULE_SD4);
> +#endif
> +	default:
> +		return 0;
> +	}
> +}
> +
> +u32 ecspi_fused(u32 base_addr)
> +{
> +	switch (base_addr) {
> +	case ECSPI1_BASE_ADDR:
> +		return check_module_fused(MODULE_ECSPI1);
> +	case ECSPI2_BASE_ADDR:
> +		return check_module_fused(MODULE_ECSPI2);
> +	case ECSPI3_BASE_ADDR:
> +		return check_module_fused(MODULE_ECSPI3);
> +	case ECSPI4_BASE_ADDR:
> +		return check_module_fused(MODULE_ECSPI4);
> +#ifdef ECSPI5_BASE_ADDR
> +	case ECSPI5_BASE_ADDR:
> +		return check_module_fused(MODULE_ECSPI5);
> +#endif
> +	default:
> +		return 0;
> +	}
> +}
> +
> +u32 usb_fused(u32 base_addr)
> +{
> +	int i = (base_addr - USB_BASE_ADDR) / 0x200;
> +
> +	return check_module_fused(MODULE_USB_OTG1 + i);
> +}
> +
> +u32 qspi_fused(u32 base_addr)
> +{
> +	switch (base_addr) {
> +#ifdef QSPI1_BASE_ADDR
> +	case QSPI1_BASE_ADDR:
> +		return check_module_fused(MODULE_QSPI1);
> +#endif
> +
> +#ifdef QSPI2_BASE_ADDR
> +	case QSPI2_BASE_ADDR:
> +		return check_module_fused(MODULE_QSPI2);
> +#endif
> +	default:
> +		return 0;
> +	}
> +}
> +
> +u32 i2c_fused(u32 base_addr)
> +{
> +	switch (base_addr) {
> +	case I2C1_BASE_ADDR:
> +		return check_module_fused(MODULE_I2C1);
> +	case I2C2_BASE_ADDR:
> +		return check_module_fused(MODULE_I2C2);
> +	case I2C3_BASE_ADDR:
> +		return check_module_fused(MODULE_I2C3);
> +#ifdef I2C4_BASE_ADDR
> +	case I2C4_BASE_ADDR:
> +		return check_module_fused(MODULE_I2C4);
> +#endif
> +	}
> +
> +	return 0;
> +}
> +
> +u32 enet_fused(u32 base_addr)
> +{
> +	switch (base_addr) {
> +	case ENET_BASE_ADDR:
> +		return check_module_fused(MODULE_ENET1);
> +#ifdef ENET2_BASE_ADDR
> +	case ENET2_BASE_ADDR:
> +		return check_module_fused(MODULE_ENET2);
> +#endif
> +	default:
> +		return 0;
> +	}
> +}




Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de
Peng Fan July 24, 2019, 7:52 a.m. UTC | #2
Hi Lukasz,

> Subject: Re: [U-Boot] [PATCH 1/4] imx: add module fuse support
> 
> Hi Peng,
> 
> > There are different parts from one SoC. Take i.MX6ULL for example,
> > some part might not have ENET, some might have; some might not have
> > USB, some might have. The information could be got from OCOTP, to make
> > one image support the different parts, we need runtime disable linux
> > kernel dts node and uboot driver probe if the corresponding module not
> > exists in the part.
> 
> If I understand correctly the concept is interesting to make the final binary
> smaller.

No. This is to use one image to support multiple parts of a same kind SoC.
So this patch will make the uboot image size larger.

As described in commit log, some i.MX6UL parts not have enet, some have
Enet, so we need find a method to make the same image could
work on the two parts, that is what this patch does.

Thanks,
Peng.

> 
> >
> > Signed-off-by: Peng Fan <peng.fan@nxp.com>
> > ---
> >  arch/arm/include/asm/mach-imx/module_fuse.h | 127 +++++++++++
> >  arch/arm/include/asm/mach-imx/sys_proto.h   |   1 +
> >  arch/arm/mach-imx/Kconfig                   |   7 +
> >  arch/arm/mach-imx/mx6/Makefile              |   1 +
> >  arch/arm/mach-imx/mx6/module_fuse.c         | 322
> > ++++++++++++++++++++++++++++ 5 files changed, 458 insertions(+)
> >  create mode 100644 arch/arm/include/asm/mach-imx/module_fuse.h
> >  create mode 100644 arch/arm/mach-imx/mx6/module_fuse.c
> >
> > diff --git a/arch/arm/include/asm/mach-imx/module_fuse.h
> > b/arch/arm/include/asm/mach-imx/module_fuse.h new file mode 100644
> > index 0000000000..6b93f0402e
> > --- /dev/null
> > +++ b/arch/arm/include/asm/mach-imx/module_fuse.h
> > @@ -0,0 +1,127 @@
> > +/* SPDX-License-Identifier: GPL-2.0+ */
> > +/*
> > + * Copyright 2019 NXP
> > + */
> > +
> > +#ifndef __MODULE_FUSE_H__
> > +#define __MODULE_FUSE_H__
> > +
> > +enum fuse_module_type {
> > +	MODULE_TSC,
> > +	MODULE_ADC1,
> > +	MODULE_ADC2,
> > +	MODULE_SIM1,
> > +	MODULE_SIM2,
> > +	MODULE_FLEXCAN1,
> > +	MODULE_FLEXCAN2,
> > +	MODULE_SPDIF,
> > +	MODULE_EIM,
> > +	MODULE_SD1,
> > +	MODULE_SD2,
> > +	MODULE_SD3,
> > +	MODULE_SD4,
> > +	MODULE_QSPI1,
> > +	MODULE_QSPI2,
> > +	MODULE_GPMI,
> > +	MODULE_APBHDMA,
> > +	MODULE_LCDIF,
> > +	MODULE_PXP,
> > +	MODULE_CSI,
> > +	MODULE_ENET1,
> > +	MODULE_ENET2,
> > +	MODULE_CAAM,
> > +	MODULE_USB_OTG1,
> > +	MODULE_USB_OTG2,
> > +	MODULE_SAI2,
> > +	MODULE_SAI3,
> > +	MODULE_BEE,
> > +	MODULE_UART1,
> > +	MODULE_UART2,
> > +	MODULE_UART3,
> > +	MODULE_UART4,
> > +	MODULE_UART5,
> > +	MODULE_UART6,
> > +	MODULE_UART7,
> > +	MODULE_UART8,
> > +	MODULE_PWM5,
> > +	MODULE_PWM6,
> > +	MODULE_PWM7,
> > +	MODULE_PWM8,
> > +	MODULE_ECSPI1,
> > +	MODULE_ECSPI2,
> > +	MODULE_ECSPI3,
> > +	MODULE_ECSPI4,
> > +	MODULE_ECSPI5,
> > +	MODULE_I2C1,
> > +	MODULE_I2C2,
> > +	MODULE_I2C3,
> > +	MODULE_I2C4,
> > +	MODULE_GPT1,
> > +	MODULE_GPT2,
> > +	MODULE_EPIT1,
> > +	MODULE_EPIT2,
> > +	MODULE_EPDC,
> > +	MODULE_ESAI,
> > +	MODULE_DCP,
> > +	MODULE_DCP_CRYPTO,
> > +};
> > +
> > +struct fuse_entry_desc {
> > +	enum fuse_module_type module;
> > +	const char *node_path;
> > +	u32 fuse_word_offset;
> > +	u32 fuse_bit_offset;
> > +	u32 status;
> > +};
> > +
> > +#if !IS_ENABLED(CONFIG_IMX_MODULE_FUSE)
> > +static inline u32 check_module_fused(enum fuse_module_type module) {
> > +	return 0;
> > +};
> > +
> > +static inline u32 esdhc_fused(u32 base_addr) {
> > +	return 0;
> > +};
> > +
> > +static inline u32 ecspi_fused(u32 base_addr) {
> > +	return 0;
> > +};
> > +
> > +static inline u32 uart_fused(u32 base_addr) {
> > +	return 0;
> > +};
> > +
> > +static inline u32 usb_fused(u32 base_addr) {
> > +	return 0;
> > +};
> > +
> > +static inline u32 qspi_fused(u32 base_addr) {
> > +	return 0;
> > +};
> > +
> > +static inline u32 i2c_fused(u32 base_addr) {
> > +	return 0;
> > +};
> > +
> > +static inline u32 enet_fused(u32 base_addr) {
> > +	return 0;
> > +};
> > +#else
> > +u32 check_module_fused(enum fuse_module_type module);
> > +u32 esdhc_fused(u32 base_addr);
> > +u32 ecspi_fused(u32 base_addr);
> > +u32 uart_fused(u32 base_addr);
> > +u32 usb_fused(u32 base_addr);
> > +u32 qspi_fused(u32 base_addr);
> > +u32 i2c_fused(u32 base_addr);
> > +u32 enet_fused(u32 base_addr);
> > +#endif
> > +#endif /* __MODULE_FUSE_H__ */
> > diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h
> > b/arch/arm/include/asm/mach-imx/sys_proto.h index
> > 79cb4e6dc9..14b016ee99 100644 ---
> > a/arch/arm/include/asm/mach-imx/sys_proto.h +++
> > b/arch/arm/include/asm/mach-imx/sys_proto.h @@ -9,6 +9,7 @@
> >
> >  #include <asm/io.h>
> >  #include <asm/mach-imx/regs-common.h>
> > +#include <asm/mach-imx/module_fuse.h>
> >  #include <common.h>
> >  #include "../arch-imx/cpu.h"
> >
> > diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> > index d3942f6b3f..b8625962a6 100644
> > --- a/arch/arm/mach-imx/Kconfig
> > +++ b/arch/arm/mach-imx/Kconfig
> > @@ -27,6 +27,13 @@ config IMX_BOOTAUX
> >  	help
> >  	  bootaux [addr] to boot auxiliary core.
> >
> > +config IMX_MODULE_FUSE
> > +	bool "i.MX Module Fuse"
> > +	depends on ARCH_MX6
> > +	help
> > +	  i.MX module fuse to runtime disable some driver, including
> > +	  Linux OS device node.
> > +
> >  config USE_IMXIMG_PLUGIN
> >  	bool "Use imximage plugin code"
> >  	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX7ULP diff --git
> > a/arch/arm/mach-imx/mx6/Makefile b/arch/arm/mach-imx/mx6/Makefile
> > index 81e2913d14..7ea8f91e4f 100644
> > --- a/arch/arm/mach-imx/mx6/Makefile
> > +++ b/arch/arm/mach-imx/mx6/Makefile
> > @@ -6,6 +6,7 @@
> >  # (C) Copyright 2011 Freescale Semiconductor, Inc.
> >
> >  obj-y	:= soc.o clock.o
> > +obj-$(CONFIG_IMX_MODULE_FUSE) += module_fuse.o
> >  obj-$(CONFIG_SPL_BUILD)	     += ddr.o
> >  obj-$(CONFIG_MP)             += mp.o
> >  obj-$(CONFIG_MX6UL_LITESOM)  += litesom.o diff --git
> > a/arch/arm/mach-imx/mx6/module_fuse.c
> > b/arch/arm/mach-imx/mx6/module_fuse.c new file mode 100644 index
> > 0000000000..417264b15c
> > --- /dev/null
> > +++ b/arch/arm/mach-imx/mx6/module_fuse.c
> > @@ -0,0 +1,322 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/*
> > + * Copyright 2019 NXP
> > + */
> > +
> > +#include <common.h>
> > +#include <fdt_support.h>
> > +#include <asm/io.h>
> > +#include <asm/arch/sys_proto.h>
> > +#include <asm/arch/imx-regs.h>
> > +#include <asm/mach-imx/module_fuse.h> #include <linux/errno.h>
> > +
> > +static struct fuse_entry_desc mx6_fuse_descs[] = { #if
> > +defined(CONFIG_MX6ULL)
> > +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
> > +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
> > 23},
> > +	{MODULE_EPDC, "/soc/aips-bus@2200000/epdc@228c000", 0x430,
> > 24},
> > +	{MODULE_ESAI,
> > "/soc/aips-bus@2000000/spba-bus@2000000/esai@2024000", 0x430, 25},
> > +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
> > 0x430, 26},
> > +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
> > 0x430, 27},
> > +	{MODULE_SPDIF,
> > "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
> > +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
> > +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440,
> > 4},
> > +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440,
> > 5},
> > +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440,
> > 6},
> > +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
> > +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
> > +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440,
> > 8},
> > +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
> > +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
> > +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
> > 11},
> > +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
> > 0x440, 12},
> > +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
> > 0x440, 13},
> > +	{MODULE_DCP, "/soc/aips-bus@2200000/dcp@2280000", 0x440, 14},
> > +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
> > 0x440, 15},
> > +	{MODULE_SAI2,
> > "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
> > +	{MODULE_SAI3,
> > "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
> > +	{MODULE_DCP_CRYPTO, "/soc/aips-bus@2200000/dcp@2280000",
> > 0x440, 25},
> > +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
> > 0x440, 26},
> > +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
> > 0x440, 26},
> > +	{MODULE_UART7,
> > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440,
> 26},
> > +	{MODULE_UART8, "/soc/aips-bus@2200000/serial@2288000",
> > 0x440, 26},
> > +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440,
> > 27},
> > +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440,
> > 27},
> > +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440,
> > 27},
> > +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440,
> > 27},
> > +	{MODULE_ECSPI3,
> > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440,
> 28},
> > +	{MODULE_ECSPI4,
> > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440,
> 28},
> > +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
> > 29},
> > +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
> > 29},
> > +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
> > 30},
> > +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440,
> > 31},
> > +	/* Paths for older imx tree: */
> > +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430,
> > 22},
> > +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430,
> > 23},
> > +	{MODULE_EPDC, "/soc/aips-bus@02200000/epdc@0228c000", 0x430,
> > 24},
> > +	{MODULE_ESAI,
> > "/soc/aips-bus@02000000/spba-bus@02000000/esai@02024000", 0x430,
> 25},
> > +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
> > 0x430, 26},
> > +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
> > 0x430, 27},
> > +	{MODULE_SPDIF,
> > "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440,
> 2},
> > +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440,
> > 3},
> > +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440,
> > 4},
> > +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440,
> > 5},
> > +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
> > 0x440, 6},
> > +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
> > +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
> > +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
> > 0x440, 8},
> > +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440,
> > 9},
> > +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440,
> > 10},
> > +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440,
> > 11},
> > +	{MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000",
> > 0x440, 12},
> > +	{MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000",
> > 0x440, 13},
> > +	{MODULE_DCP, "/soc/aips-bus@02200000/dcp@02280000", 0x440,
> > 14},
> > +	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200",
> > 0x440, 15},
> > +	{MODULE_SAI2,
> > "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440,
> 24},
> > +	{MODULE_SAI3,
> > "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440,
> 24},
> > +	{MODULE_DCP_CRYPTO, "/soc/aips-bus@02200000/dcp@02280000",
> > 0x440, 25},
> > +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
> > 0x440, 26},
> > +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
> > 0x440, 26},
> > +	{MODULE_UART7,
> > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000",
> 0x440,
> > 26},
> > +	{MODULE_UART8, "/soc/aips-bus@02200000/serial@02288000",
> > 0x440, 26},
> > +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440,
> > 27},
> > +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440,
> > 27},
> > +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440,
> > 27},
> > +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440,
> > 27},
> > +	{MODULE_ECSPI3,
> > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440,
> 28},
> > +	{MODULE_ECSPI4,
> > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440,
> 28},
> > +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440,
> > 29},
> > +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440,
> > 29},
> > +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440,
> > 30},
> > +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",
> > 0x440, 31}, +#elif defined(CONFIG_MX6UL)
> > +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
> > +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
> > 23},
> > +	{MODULE_SIM1, "/soc/aips-bus@2100000/sim@218c000", 0x430,
> > 24},
> > +	{MODULE_SIM2, "/soc/aips-bus@2100000/sim@21b4000", 0x430,
> > 25},
> > +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
> > 0x430, 26},
> > +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
> > 0x430, 27},
> > +	{MODULE_SPDIF,
> > "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
> > +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
> > +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440,
> > 4},
> > +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440,
> > 5},
> > +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440,
> > 6},
> > +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
> > +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
> > +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440,
> > 8},
> > +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
> > +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
> > +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
> > 11},
> > +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
> > 0x440, 12},
> > +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
> > 0x440, 13},
> > +	{MODULE_CAAM, "/soc/aips-bus@2100000/caam@2140000", 0x440,
> > 14},
> > +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
> > 0x440, 15},
> > +	{MODULE_SAI2,
> > "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
> > +	{MODULE_SAI3,
> > "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
> > +	{MODULE_BEE, "/soc/aips-bus@2000000/bee@2044000", 0x440, 25},
> > +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
> > 0x440, 26},
> > +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
> > 0x440, 26},
> > +	{MODULE_UART7,
> > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440,
> 26},
> > +	{MODULE_UART8,
> > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2024000", 0x440,
> 26},
> > +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440,
> > 27},
> > +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440,
> > 27},
> > +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440,
> > 27},
> > +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440,
> > 27},
> > +	{MODULE_ECSPI3,
> > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440,
> 28},
> > +	{MODULE_ECSPI4,
> > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440,
> 28},
> > +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
> > 29},
> > +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
> > 29},
> > +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
> > 30},
> > +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440,
> > 31},
> > +	/* Paths for older imx tree: */
> > +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430,
> > 22},
> > +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430,
> > 23},
> > +	{MODULE_SIM1, "/soc/aips-bus@02100000/sim@0218c000", 0x430,
> > 24},
> > +	{MODULE_SIM2, "/soc/aips-bus@02100000/sim@021b4000", 0x430,
> > 25},
> > +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
> > 0x430, 26},
> > +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
> > 0x430, 27},
> > +	{MODULE_SPDIF,
> > "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440,
> 2},
> > +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440,
> > 3},
> > +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440,
> > 4},
> > +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440,
> > 5},
> > +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
> > 0x440, 6},
> > +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
> > +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
> > +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
> > 0x440, 8},
> > +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440,
> > 9},
> > +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440,
> > 10},
> > +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440,
> > 11},
> > +	{MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000",
> > 0x440, 12},
> > +	{MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000",
> > 0x440, 13},
> > +	{MODULE_CAAM, "/soc/aips-bus@02100000/caam@2140000", 0x440,
> > 14},
> > +	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200",
> > 0x440, 15},
> > +	{MODULE_SAI2,
> > "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440,
> 24},
> > +	{MODULE_SAI3,
> > "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440,
> 24},
> > +	{MODULE_BEE, "/soc/aips-bus@02000000/bee@02044000", 0x440,
> > 25},
> > +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
> > 0x440, 26},
> > +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
> > 0x440, 26},
> > +	{MODULE_UART7,
> > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000",
> 0x440,
> > 26},
> > +	{MODULE_UART8,
> > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02024000",
> 0x440,
> > 26},
> > +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440,
> > 27},
> > +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440,
> > 27},
> > +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440,
> > 27},
> > +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440,
> > 27},
> > +	{MODULE_ECSPI3,
> > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440,
> 28},
> > +	{MODULE_ECSPI4,
> > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440,
> 28},
> > +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440,
> > 29},
> > +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440,
> > 29},
> > +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440,
> > 30},
> > +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",
> 
> I'm wondering if there would be a way to avoid the hardcoded DTS patch
> ("/soc/aips-bus@02000000/epit@020d4000") ?
> 
> Maybe, after reading the the OCOTP values this could be found dynamically
> (by using the e.g. i2c@021f8000 string) on the DTS already stored in RAM
> (which is thereafter passed to Linux kernel at bootm
> execution) ?
> 
> > 0x440, 31}, +#endif
> > +};
> > +
> > +u32 check_module_fused(enum fuse_module_type module) {
> > +	u32 i, reg;
> > +
> > +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
> > +		if (mx6_fuse_descs[i].module == module) {
> > +			reg = readl(OCOTP_BASE_ADDR +
> > +
> > mx6_fuse_descs[i].fuse_word_offset);
> > +			if (reg &
> > BIT(mx6_fuse_descs[i].fuse_bit_offset))
> > +				return 1; /* disabled */
> > +			else
> > +				return 0; /* enabled */
> > +		}
> > +	}
> > +
> > +	return  0; /* Not has a fuse, always enabled */ }
> > +
> > +#ifdef CONFIG_OF_SYSTEM_SETUP
> > +int ft_system_setup(void *blob, bd_t *bd) {
> > +	const char *status = "disabled";
> > +	u32 i, reg;
> > +	int rc, off;
> > +
> > +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
> > +		reg = readl(OCOTP_BASE_ADDR +
> > +			    mx6_fuse_descs[i].fuse_word_offset);
> > +		if (reg & BIT(mx6_fuse_descs[i].fuse_bit_offset)) {
> > +			off = fdt_path_offset(blob,
> > +
> > mx6_fuse_descs[i].node_path); +
> > +			if (off < 0)
> > +				continue; /* Not found, skip it */
> > +add_status:
> > +			rc = fdt_setprop(blob, nodeoff, "status",
> > status,
> > +					 strlen(status) + 1);
> > +			if (rc) {
> > +				if (rc == -FDT_ERR_NOSPACE) {
> > +					rc = fdt_increase_size(blob,
> > 512);
> > +					if (!rc)
> > +						goto add_status;
> > +				}
> > +				printf("Unable to update property
> > %s:%s, err=%s\n", mx6_fuse_descs[i].node_path, "status",
> > fdt_strerror(rc));
> > +			} else {
> > +				printf("Modify %s disabled\n",
> > mx6_fuse_descs[i].node_path);
> > +			}
> > +		}
> > +	}
> > +
> > +	return 0;
> > +}
> > +#endif
> > +
> > +u32 esdhc_fused(u32 base_addr)
> > +{
> > +	switch (base_addr) {
> > +	case USDHC1_BASE_ADDR:
> > +		return check_module_fused(MODULE_SD1);
> > +	case USDHC2_BASE_ADDR:
> > +		return check_module_fused(MODULE_SD2); #ifdef
> USDHC3_BASE_ADDR
> > +	case USDHC3_BASE_ADDR:
> > +		return check_module_fused(MODULE_SD3); #endif #ifdef
> > +USDHC4_BASE_ADDR
> > +	case USDHC4_BASE_ADDR:
> > +		return check_module_fused(MODULE_SD4); #endif
> > +	default:
> > +		return 0;
> > +	}
> > +}
> > +
> > +u32 ecspi_fused(u32 base_addr)
> > +{
> > +	switch (base_addr) {
> > +	case ECSPI1_BASE_ADDR:
> > +		return check_module_fused(MODULE_ECSPI1);
> > +	case ECSPI2_BASE_ADDR:
> > +		return check_module_fused(MODULE_ECSPI2);
> > +	case ECSPI3_BASE_ADDR:
> > +		return check_module_fused(MODULE_ECSPI3);
> > +	case ECSPI4_BASE_ADDR:
> > +		return check_module_fused(MODULE_ECSPI4);
> > +#ifdef ECSPI5_BASE_ADDR
> > +	case ECSPI5_BASE_ADDR:
> > +		return check_module_fused(MODULE_ECSPI5);
> > +#endif
> > +	default:
> > +		return 0;
> > +	}
> > +}
> > +
> > +u32 usb_fused(u32 base_addr)
> > +{
> > +	int i = (base_addr - USB_BASE_ADDR) / 0x200;
> > +
> > +	return check_module_fused(MODULE_USB_OTG1 + i); }
> > +
> > +u32 qspi_fused(u32 base_addr)
> > +{
> > +	switch (base_addr) {
> > +#ifdef QSPI1_BASE_ADDR
> > +	case QSPI1_BASE_ADDR:
> > +		return check_module_fused(MODULE_QSPI1); #endif
> > +
> > +#ifdef QSPI2_BASE_ADDR
> > +	case QSPI2_BASE_ADDR:
> > +		return check_module_fused(MODULE_QSPI2); #endif
> > +	default:
> > +		return 0;
> > +	}
> > +}
> > +
> > +u32 i2c_fused(u32 base_addr)
> > +{
> > +	switch (base_addr) {
> > +	case I2C1_BASE_ADDR:
> > +		return check_module_fused(MODULE_I2C1);
> > +	case I2C2_BASE_ADDR:
> > +		return check_module_fused(MODULE_I2C2);
> > +	case I2C3_BASE_ADDR:
> > +		return check_module_fused(MODULE_I2C3); #ifdef
> I2C4_BASE_ADDR
> > +	case I2C4_BASE_ADDR:
> > +		return check_module_fused(MODULE_I2C4); #endif
> > +	}
> > +
> > +	return 0;
> > +}
> > +
> > +u32 enet_fused(u32 base_addr)
> > +{
> > +	switch (base_addr) {
> > +	case ENET_BASE_ADDR:
> > +		return check_module_fused(MODULE_ENET1); #ifdef
> ENET2_BASE_ADDR
> > +	case ENET2_BASE_ADDR:
> > +		return check_module_fused(MODULE_ENET2); #endif
> > +	default:
> > +		return 0;
> > +	}
> > +}
> 
> 
> 
> 
> Best regards,
> 
> Lukasz Majewski
> 
> --
> 
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email:
> lukma@denx.de
Lukasz Majewski July 24, 2019, 10:05 a.m. UTC | #3
Hi Peng,

> Hi Lukasz,
> 
> > Subject: Re: [U-Boot] [PATCH 1/4] imx: add module fuse support
> > 
> > Hi Peng,
> >   
> > > There are different parts from one SoC. Take i.MX6ULL for example,
> > > some part might not have ENET, some might have; some might not
> > > have USB, some might have. The information could be got from
> > > OCOTP, to make one image support the different parts, we need
> > > runtime disable linux kernel dts node and uboot driver probe if
> > > the corresponding module not exists in the part.  
> > 
> > If I understand correctly the concept is interesting to make the
> > final binary smaller.  
> 
> No. This is to use one image to support multiple parts of a same kind
> SoC. So this patch will make the uboot image size larger.
> 
> As described in commit log, some i.MX6UL parts not have enet, some
> have Enet,

Is there any markings on the SoC? (like MX6ULXXXXXX) which indicates
which SoC has enet and which doesn't have one?

> so we need find a method to make the same image could
> work on the two parts, that is what this patch does.

Ok. Thanks for explanation.

> 
> Thanks,
> Peng.
> 
> >   
> > >
> > > Signed-off-by: Peng Fan <peng.fan@nxp.com>
> > > ---
> > >  arch/arm/include/asm/mach-imx/module_fuse.h | 127 +++++++++++
> > >  arch/arm/include/asm/mach-imx/sys_proto.h   |   1 +
> > >  arch/arm/mach-imx/Kconfig                   |   7 +
> > >  arch/arm/mach-imx/mx6/Makefile              |   1 +
> > >  arch/arm/mach-imx/mx6/module_fuse.c         | 322
> > > ++++++++++++++++++++++++++++ 5 files changed, 458 insertions(+)
> > >  create mode 100644 arch/arm/include/asm/mach-imx/module_fuse.h
> > >  create mode 100644 arch/arm/mach-imx/mx6/module_fuse.c
> > >
> > > diff --git a/arch/arm/include/asm/mach-imx/module_fuse.h
> > > b/arch/arm/include/asm/mach-imx/module_fuse.h new file mode 100644
> > > index 0000000000..6b93f0402e
> > > --- /dev/null
> > > +++ b/arch/arm/include/asm/mach-imx/module_fuse.h
> > > @@ -0,0 +1,127 @@
> > > +/* SPDX-License-Identifier: GPL-2.0+ */
> > > +/*
> > > + * Copyright 2019 NXP
> > > + */
> > > +
> > > +#ifndef __MODULE_FUSE_H__
> > > +#define __MODULE_FUSE_H__
> > > +
> > > +enum fuse_module_type {
> > > +	MODULE_TSC,
> > > +	MODULE_ADC1,
> > > +	MODULE_ADC2,
> > > +	MODULE_SIM1,
> > > +	MODULE_SIM2,
> > > +	MODULE_FLEXCAN1,
> > > +	MODULE_FLEXCAN2,
> > > +	MODULE_SPDIF,
> > > +	MODULE_EIM,
> > > +	MODULE_SD1,
> > > +	MODULE_SD2,
> > > +	MODULE_SD3,
> > > +	MODULE_SD4,
> > > +	MODULE_QSPI1,
> > > +	MODULE_QSPI2,
> > > +	MODULE_GPMI,
> > > +	MODULE_APBHDMA,
> > > +	MODULE_LCDIF,
> > > +	MODULE_PXP,
> > > +	MODULE_CSI,
> > > +	MODULE_ENET1,
> > > +	MODULE_ENET2,
> > > +	MODULE_CAAM,
> > > +	MODULE_USB_OTG1,
> > > +	MODULE_USB_OTG2,
> > > +	MODULE_SAI2,
> > > +	MODULE_SAI3,
> > > +	MODULE_BEE,
> > > +	MODULE_UART1,
> > > +	MODULE_UART2,
> > > +	MODULE_UART3,
> > > +	MODULE_UART4,
> > > +	MODULE_UART5,
> > > +	MODULE_UART6,
> > > +	MODULE_UART7,
> > > +	MODULE_UART8,
> > > +	MODULE_PWM5,
> > > +	MODULE_PWM6,
> > > +	MODULE_PWM7,
> > > +	MODULE_PWM8,
> > > +	MODULE_ECSPI1,
> > > +	MODULE_ECSPI2,
> > > +	MODULE_ECSPI3,
> > > +	MODULE_ECSPI4,
> > > +	MODULE_ECSPI5,
> > > +	MODULE_I2C1,
> > > +	MODULE_I2C2,
> > > +	MODULE_I2C3,
> > > +	MODULE_I2C4,
> > > +	MODULE_GPT1,
> > > +	MODULE_GPT2,
> > > +	MODULE_EPIT1,
> > > +	MODULE_EPIT2,
> > > +	MODULE_EPDC,
> > > +	MODULE_ESAI,
> > > +	MODULE_DCP,
> > > +	MODULE_DCP_CRYPTO,
> > > +};
> > > +
> > > +struct fuse_entry_desc {
> > > +	enum fuse_module_type module;
> > > +	const char *node_path;
> > > +	u32 fuse_word_offset;
> > > +	u32 fuse_bit_offset;
> > > +	u32 status;
> > > +};
> > > +
> > > +#if !IS_ENABLED(CONFIG_IMX_MODULE_FUSE)
> > > +static inline u32 check_module_fused(enum fuse_module_type
> > > module) {
> > > +	return 0;
> > > +};
> > > +
> > > +static inline u32 esdhc_fused(u32 base_addr) {
> > > +	return 0;
> > > +};
> > > +
> > > +static inline u32 ecspi_fused(u32 base_addr) {
> > > +	return 0;
> > > +};
> > > +
> > > +static inline u32 uart_fused(u32 base_addr) {
> > > +	return 0;
> > > +};
> > > +
> > > +static inline u32 usb_fused(u32 base_addr) {
> > > +	return 0;
> > > +};
> > > +
> > > +static inline u32 qspi_fused(u32 base_addr) {
> > > +	return 0;
> > > +};
> > > +
> > > +static inline u32 i2c_fused(u32 base_addr) {
> > > +	return 0;
> > > +};
> > > +
> > > +static inline u32 enet_fused(u32 base_addr) {
> > > +	return 0;
> > > +};
> > > +#else
> > > +u32 check_module_fused(enum fuse_module_type module);
> > > +u32 esdhc_fused(u32 base_addr);
> > > +u32 ecspi_fused(u32 base_addr);
> > > +u32 uart_fused(u32 base_addr);
> > > +u32 usb_fused(u32 base_addr);
> > > +u32 qspi_fused(u32 base_addr);
> > > +u32 i2c_fused(u32 base_addr);
> > > +u32 enet_fused(u32 base_addr);
> > > +#endif
> > > +#endif /* __MODULE_FUSE_H__ */
> > > diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h
> > > b/arch/arm/include/asm/mach-imx/sys_proto.h index
> > > 79cb4e6dc9..14b016ee99 100644 ---
> > > a/arch/arm/include/asm/mach-imx/sys_proto.h +++
> > > b/arch/arm/include/asm/mach-imx/sys_proto.h @@ -9,6 +9,7 @@
> > >
> > >  #include <asm/io.h>
> > >  #include <asm/mach-imx/regs-common.h>
> > > +#include <asm/mach-imx/module_fuse.h>
> > >  #include <common.h>
> > >  #include "../arch-imx/cpu.h"
> > >
> > > diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> > > index d3942f6b3f..b8625962a6 100644
> > > --- a/arch/arm/mach-imx/Kconfig
> > > +++ b/arch/arm/mach-imx/Kconfig
> > > @@ -27,6 +27,13 @@ config IMX_BOOTAUX
> > >  	help
> > >  	  bootaux [addr] to boot auxiliary core.
> > >
> > > +config IMX_MODULE_FUSE
> > > +	bool "i.MX Module Fuse"
> > > +	depends on ARCH_MX6
> > > +	help
> > > +	  i.MX module fuse to runtime disable some driver,
> > > including
> > > +	  Linux OS device node.
> > > +
> > >  config USE_IMXIMG_PLUGIN
> > >  	bool "Use imximage plugin code"
> > >  	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX7ULP diff --git
> > > a/arch/arm/mach-imx/mx6/Makefile b/arch/arm/mach-imx/mx6/Makefile
> > > index 81e2913d14..7ea8f91e4f 100644
> > > --- a/arch/arm/mach-imx/mx6/Makefile
> > > +++ b/arch/arm/mach-imx/mx6/Makefile
> > > @@ -6,6 +6,7 @@
> > >  # (C) Copyright 2011 Freescale Semiconductor, Inc.
> > >
> > >  obj-y	:= soc.o clock.o
> > > +obj-$(CONFIG_IMX_MODULE_FUSE) += module_fuse.o
> > >  obj-$(CONFIG_SPL_BUILD)	     += ddr.o
> > >  obj-$(CONFIG_MP)             += mp.o
> > >  obj-$(CONFIG_MX6UL_LITESOM)  += litesom.o diff --git
> > > a/arch/arm/mach-imx/mx6/module_fuse.c
> > > b/arch/arm/mach-imx/mx6/module_fuse.c new file mode 100644 index
> > > 0000000000..417264b15c
> > > --- /dev/null
> > > +++ b/arch/arm/mach-imx/mx6/module_fuse.c
> > > @@ -0,0 +1,322 @@
> > > +// SPDX-License-Identifier: GPL-2.0+
> > > +/*
> > > + * Copyright 2019 NXP
> > > + */
> > > +
> > > +#include <common.h>
> > > +#include <fdt_support.h>
> > > +#include <asm/io.h>
> > > +#include <asm/arch/sys_proto.h>
> > > +#include <asm/arch/imx-regs.h>
> > > +#include <asm/mach-imx/module_fuse.h> #include <linux/errno.h>
> > > +
> > > +static struct fuse_entry_desc mx6_fuse_descs[] = { #if
> > > +defined(CONFIG_MX6ULL)
> > > +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430,
> > > 22},
> > > +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
> > > 23},
> > > +	{MODULE_EPDC, "/soc/aips-bus@2200000/epdc@228c000",
> > > 0x430, 24},
> > > +	{MODULE_ESAI,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/esai@2024000", 0x430, 25},
> > > +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
> > > 0x430, 26},
> > > +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
> > > 0x430, 27},
> > > +	{MODULE_SPDIF,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
> > > +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000",
> > > 0x440, 3},
> > > +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000",
> > > 0x440, 4},
> > > +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000",
> > > 0x440, 5},
> > > +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000",
> > > 0x440, 6},
> > > +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
> > > +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
> > > +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000",
> > > 0x440, 8},
> > > +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440,
> > > 9},
> > > +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440,
> > > 10},
> > > +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
> > > 11},
> > > +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
> > > 0x440, 12},
> > > +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
> > > 0x440, 13},
> > > +	{MODULE_DCP, "/soc/aips-bus@2200000/dcp@2280000", 0x440,
> > > 14},
> > > +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
> > > 0x440, 15},
> > > +	{MODULE_SAI2,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
> > > +	{MODULE_SAI3,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
> > > +	{MODULE_DCP_CRYPTO, "/soc/aips-bus@2200000/dcp@2280000",
> > > 0x440, 25},
> > > +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
> > > 0x440, 26},
> > > +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
> > > 0x440, 26},
> > > +	{MODULE_UART7,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440,  
> > 26},  
> > > +	{MODULE_UART8, "/soc/aips-bus@2200000/serial@2288000",
> > > 0x440, 26},
> > > +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440,
> > > 27},
> > > +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440,
> > > 27},
> > > +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440,
> > > 27},
> > > +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440,
> > > 27},
> > > +	{MODULE_ECSPI3,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440,  
> > 28},  
> > > +	{MODULE_ECSPI4,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440,  
> > 28},  
> > > +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
> > > 29},
> > > +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
> > > 29},
> > > +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
> > > 30},
> > > +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000",
> > > 0x440, 31},
> > > +	/* Paths for older imx tree: */
> > > +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000",
> > > 0x430, 22},
> > > +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000",
> > > 0x430, 23},
> > > +	{MODULE_EPDC, "/soc/aips-bus@02200000/epdc@0228c000",
> > > 0x430, 24},
> > > +	{MODULE_ESAI,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/esai@02024000", 0x430,  
> > 25},  
> > > +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
> > > 0x430, 26},
> > > +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
> > > 0x430, 27},
> > > +	{MODULE_SPDIF,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000",
> > > 0x440,  
> > 2},  
> > > +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000",
> > > 0x440, 3},
> > > +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000",
> > > 0x440, 4},
> > > +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000",
> > > 0x440, 5},
> > > +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
> > > 0x440, 6},
> > > +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
> > > +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
> > > +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
> > > 0x440, 8},
> > > +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000",
> > > 0x440, 9},
> > > +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000",
> > > 0x440, 10},
> > > +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000",
> > > 0x440, 11},
> > > +	{MODULE_ENET1,
> > > "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
> > > +	{MODULE_ENET2,
> > > "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
> > > +	{MODULE_DCP, "/soc/aips-bus@02200000/dcp@02280000",
> > > 0x440, 14},
> > > +	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200",
> > > 0x440, 15},
> > > +	{MODULE_SAI2,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440,  
> > 24},  
> > > +	{MODULE_SAI3,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440,  
> > 24},  
> > > +	{MODULE_DCP_CRYPTO,
> > > "/soc/aips-bus@02200000/dcp@02280000", 0x440, 25},
> > > +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
> > > 0x440, 26},
> > > +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
> > > 0x440, 26},
> > > +	{MODULE_UART7,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000",  
> > 0x440,  
> > > 26},
> > > +	{MODULE_UART8, "/soc/aips-bus@02200000/serial@02288000",
> > > 0x440, 26},
> > > +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000",
> > > 0x440, 27},
> > > +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000",
> > > 0x440, 27},
> > > +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000",
> > > 0x440, 27},
> > > +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000",
> > > 0x440, 27},
> > > +	{MODULE_ECSPI3,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000",
> > > 0x440,  
> > 28},  
> > > +	{MODULE_ECSPI4,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000",
> > > 0x440,  
> > 28},  
> > > +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000",
> > > 0x440, 29},
> > > +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000",
> > > 0x440, 29},
> > > +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000",
> > > 0x440, 30},
> > > +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",
> > > 0x440, 31}, +#elif defined(CONFIG_MX6UL)
> > > +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430,
> > > 22},
> > > +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
> > > 23},
> > > +	{MODULE_SIM1, "/soc/aips-bus@2100000/sim@218c000", 0x430,
> > > 24},
> > > +	{MODULE_SIM2, "/soc/aips-bus@2100000/sim@21b4000", 0x430,
> > > 25},
> > > +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
> > > 0x430, 26},
> > > +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
> > > 0x430, 27},
> > > +	{MODULE_SPDIF,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
> > > +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000",
> > > 0x440, 3},
> > > +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000",
> > > 0x440, 4},
> > > +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000",
> > > 0x440, 5},
> > > +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000",
> > > 0x440, 6},
> > > +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
> > > +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
> > > +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000",
> > > 0x440, 8},
> > > +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440,
> > > 9},
> > > +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440,
> > > 10},
> > > +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
> > > 11},
> > > +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
> > > 0x440, 12},
> > > +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
> > > 0x440, 13},
> > > +	{MODULE_CAAM, "/soc/aips-bus@2100000/caam@2140000",
> > > 0x440, 14},
> > > +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
> > > 0x440, 15},
> > > +	{MODULE_SAI2,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
> > > +	{MODULE_SAI3,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
> > > +	{MODULE_BEE, "/soc/aips-bus@2000000/bee@2044000", 0x440,
> > > 25},
> > > +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
> > > 0x440, 26},
> > > +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
> > > 0x440, 26},
> > > +	{MODULE_UART7,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440,  
> > 26},  
> > > +	{MODULE_UART8,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2024000", 0x440,  
> > 26},  
> > > +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440,
> > > 27},
> > > +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440,
> > > 27},
> > > +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440,
> > > 27},
> > > +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440,
> > > 27},
> > > +	{MODULE_ECSPI3,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440,  
> > 28},  
> > > +	{MODULE_ECSPI4,
> > > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440,  
> > 28},  
> > > +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
> > > 29},
> > > +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
> > > 29},
> > > +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
> > > 30},
> > > +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000",
> > > 0x440, 31},
> > > +	/* Paths for older imx tree: */
> > > +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000",
> > > 0x430, 22},
> > > +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000",
> > > 0x430, 23},
> > > +	{MODULE_SIM1, "/soc/aips-bus@02100000/sim@0218c000",
> > > 0x430, 24},
> > > +	{MODULE_SIM2, "/soc/aips-bus@02100000/sim@021b4000",
> > > 0x430, 25},
> > > +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
> > > 0x430, 26},
> > > +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
> > > 0x430, 27},
> > > +	{MODULE_SPDIF,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000",
> > > 0x440,  
> > 2},  
> > > +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000",
> > > 0x440, 3},
> > > +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000",
> > > 0x440, 4},
> > > +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000",
> > > 0x440, 5},
> > > +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
> > > 0x440, 6},
> > > +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
> > > +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
> > > +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
> > > 0x440, 8},
> > > +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000",
> > > 0x440, 9},
> > > +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000",
> > > 0x440, 10},
> > > +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000",
> > > 0x440, 11},
> > > +	{MODULE_ENET1,
> > > "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
> > > +	{MODULE_ENET2,
> > > "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
> > > +	{MODULE_CAAM, "/soc/aips-bus@02100000/caam@2140000",
> > > 0x440, 14},
> > > +	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200",
> > > 0x440, 15},
> > > +	{MODULE_SAI2,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440,  
> > 24},  
> > > +	{MODULE_SAI3,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440,  
> > 24},  
> > > +	{MODULE_BEE, "/soc/aips-bus@02000000/bee@02044000",
> > > 0x440, 25},
> > > +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
> > > 0x440, 26},
> > > +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
> > > 0x440, 26},
> > > +	{MODULE_UART7,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000",  
> > 0x440,  
> > > 26},
> > > +	{MODULE_UART8,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02024000",  
> > 0x440,  
> > > 26},
> > > +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000",
> > > 0x440, 27},
> > > +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000",
> > > 0x440, 27},
> > > +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000",
> > > 0x440, 27},
> > > +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000",
> > > 0x440, 27},
> > > +	{MODULE_ECSPI3,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000",
> > > 0x440,  
> > 28},  
> > > +	{MODULE_ECSPI4,
> > > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000",
> > > 0x440,  
> > 28},  
> > > +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000",
> > > 0x440, 29},
> > > +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000",
> > > 0x440, 29},
> > > +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000",
> > > 0x440, 30},
> > > +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",  
> > 
> > I'm wondering if there would be a way to avoid the hardcoded DTS
> > patch ("/soc/aips-bus@02000000/epit@020d4000") ?
> > 
> > Maybe, after reading the the OCOTP values this could be found
> > dynamically (by using the e.g. i2c@021f8000 string) on the DTS
> > already stored in RAM (which is thereafter passed to Linux kernel
> > at bootm execution) ?
> >   
> > > 0x440, 31}, +#endif
> > > +};
> > > +
> > > +u32 check_module_fused(enum fuse_module_type module) {
> > > +	u32 i, reg;
> > > +
> > > +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
> > > +		if (mx6_fuse_descs[i].module == module) {
> > > +			reg = readl(OCOTP_BASE_ADDR +
> > > +
> > > mx6_fuse_descs[i].fuse_word_offset);
> > > +			if (reg &
> > > BIT(mx6_fuse_descs[i].fuse_bit_offset))
> > > +				return 1; /* disabled */
> > > +			else
> > > +				return 0; /* enabled */
> > > +		}
> > > +	}
> > > +
> > > +	return  0; /* Not has a fuse, always enabled */ }
> > > +
> > > +#ifdef CONFIG_OF_SYSTEM_SETUP
> > > +int ft_system_setup(void *blob, bd_t *bd) {
> > > +	const char *status = "disabled";
> > > +	u32 i, reg;
> > > +	int rc, off;
> > > +
> > > +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
> > > +		reg = readl(OCOTP_BASE_ADDR +
> > > +			    mx6_fuse_descs[i].fuse_word_offset);
> > > +		if (reg &
> > > BIT(mx6_fuse_descs[i].fuse_bit_offset)) {
> > > +			off = fdt_path_offset(blob,
> > > +
> > > mx6_fuse_descs[i].node_path); +
> > > +			if (off < 0)
> > > +				continue; /* Not found, skip it
> > > */ +add_status:
> > > +			rc = fdt_setprop(blob, nodeoff, "status",
> > > status,
> > > +					 strlen(status) + 1);
> > > +			if (rc) {
> > > +				if (rc == -FDT_ERR_NOSPACE) {
> > > +					rc =
> > > fdt_increase_size(blob, 512);
> > > +					if (!rc)
> > > +						goto add_status;
> > > +				}
> > > +				printf("Unable to update property
> > > %s:%s, err=%s\n", mx6_fuse_descs[i].node_path, "status",
> > > fdt_strerror(rc));
> > > +			} else {
> > > +				printf("Modify %s disabled\n",
> > > mx6_fuse_descs[i].node_path);
> > > +			}
> > > +		}
> > > +	}
> > > +
> > > +	return 0;
> > > +}
> > > +#endif
> > > +
> > > +u32 esdhc_fused(u32 base_addr)
> > > +{
> > > +	switch (base_addr) {
> > > +	case USDHC1_BASE_ADDR:
> > > +		return check_module_fused(MODULE_SD1);
> > > +	case USDHC2_BASE_ADDR:
> > > +		return check_module_fused(MODULE_SD2); #ifdef  
> > USDHC3_BASE_ADDR  
> > > +	case USDHC3_BASE_ADDR:
> > > +		return check_module_fused(MODULE_SD3); #endif
> > > #ifdef +USDHC4_BASE_ADDR
> > > +	case USDHC4_BASE_ADDR:
> > > +		return check_module_fused(MODULE_SD4); #endif
> > > +	default:
> > > +		return 0;
> > > +	}
> > > +}
> > > +
> > > +u32 ecspi_fused(u32 base_addr)
> > > +{
> > > +	switch (base_addr) {
> > > +	case ECSPI1_BASE_ADDR:
> > > +		return check_module_fused(MODULE_ECSPI1);
> > > +	case ECSPI2_BASE_ADDR:
> > > +		return check_module_fused(MODULE_ECSPI2);
> > > +	case ECSPI3_BASE_ADDR:
> > > +		return check_module_fused(MODULE_ECSPI3);
> > > +	case ECSPI4_BASE_ADDR:
> > > +		return check_module_fused(MODULE_ECSPI4);
> > > +#ifdef ECSPI5_BASE_ADDR
> > > +	case ECSPI5_BASE_ADDR:
> > > +		return check_module_fused(MODULE_ECSPI5);
> > > +#endif
> > > +	default:
> > > +		return 0;
> > > +	}
> > > +}
> > > +
> > > +u32 usb_fused(u32 base_addr)
> > > +{
> > > +	int i = (base_addr - USB_BASE_ADDR) / 0x200;
> > > +
> > > +	return check_module_fused(MODULE_USB_OTG1 + i); }
> > > +
> > > +u32 qspi_fused(u32 base_addr)
> > > +{
> > > +	switch (base_addr) {
> > > +#ifdef QSPI1_BASE_ADDR
> > > +	case QSPI1_BASE_ADDR:
> > > +		return check_module_fused(MODULE_QSPI1); #endif
> > > +
> > > +#ifdef QSPI2_BASE_ADDR
> > > +	case QSPI2_BASE_ADDR:
> > > +		return check_module_fused(MODULE_QSPI2); #endif
> > > +	default:
> > > +		return 0;
> > > +	}
> > > +}
> > > +
> > > +u32 i2c_fused(u32 base_addr)
> > > +{
> > > +	switch (base_addr) {
> > > +	case I2C1_BASE_ADDR:
> > > +		return check_module_fused(MODULE_I2C1);
> > > +	case I2C2_BASE_ADDR:
> > > +		return check_module_fused(MODULE_I2C2);
> > > +	case I2C3_BASE_ADDR:
> > > +		return check_module_fused(MODULE_I2C3); #ifdef  
> > I2C4_BASE_ADDR  
> > > +	case I2C4_BASE_ADDR:
> > > +		return check_module_fused(MODULE_I2C4); #endif
> > > +	}
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +u32 enet_fused(u32 base_addr)
> > > +{
> > > +	switch (base_addr) {
> > > +	case ENET_BASE_ADDR:
> > > +		return check_module_fused(MODULE_ENET1); #ifdef  
> > ENET2_BASE_ADDR  
> > > +	case ENET2_BASE_ADDR:
> > > +		return check_module_fused(MODULE_ENET2); #endif
> > > +	default:
> > > +		return 0;
> > > +	}
> > > +}  
> > 
> > 
> > 
> > 
> > Best regards,
> > 
> > Lukasz Majewski
> > 
> > --
> > 
> > DENX Software Engineering GmbH,      Managing Director: Wolfgang
> > Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell,
> > Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email:
> > lukma@denx.de  




Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de
Peng Fan July 24, 2019, 12:12 p.m. UTC | #4
Hi Lukasz,

> Subject: Re: [U-Boot] [PATCH 1/4] imx: add module fuse support
> 
> Hi Peng,
> 
> > Hi Lukasz,
> >
> > > Subject: Re: [U-Boot] [PATCH 1/4] imx: add module fuse support
> > >
> > > Hi Peng,
> > >
> > > > There are different parts from one SoC. Take i.MX6ULL for example,
> > > > some part might not have ENET, some might have; some might not
> > > > have USB, some might have. The information could be got from
> > > > OCOTP, to make one image support the different parts, we need
> > > > runtime disable linux kernel dts node and uboot driver probe if
> > > > the corresponding module not exists in the part.
> > >
> > > If I understand correctly the concept is interesting to make the
> > > final binary smaller.
> >
> > No. This is to use one image to support multiple parts of a same kind
> > SoC. So this patch will make the uboot image size larger.
> >
> > As described in commit log, some i.MX6UL parts not have enet, some
> > have Enet,
> 
> Is there any markings on the SoC? (like MX6ULXXXXXX) which indicates which
> SoC has enet and which doesn't have one?

I do not have that marketing information. We just have the information
that to use fuse to indicate whether the module is there.

Regards,
Peng.

> 
> > so we need find a method to make the same image could work on the two
> > parts, that is what this patch does.
> 
> Ok. Thanks for explanation.
> 
> >
> > Thanks,
> > Peng.
> >
> > >
> > > >
> > > > Signed-off-by: Peng Fan <peng.fan@nxp.com>
> > > > ---
> > > >  arch/arm/include/asm/mach-imx/module_fuse.h | 127 +++++++++++
> > > >  arch/arm/include/asm/mach-imx/sys_proto.h   |   1 +
> > > >  arch/arm/mach-imx/Kconfig                   |   7 +
> > > >  arch/arm/mach-imx/mx6/Makefile              |   1 +
> > > >  arch/arm/mach-imx/mx6/module_fuse.c         | 322
> > > > ++++++++++++++++++++++++++++ 5 files changed, 458 insertions(+)
> > > >  create mode 100644
> arch/arm/include/asm/mach-imx/module_fuse.h
> > > >  create mode 100644 arch/arm/mach-imx/mx6/module_fuse.c
> > > >
> > > > diff --git a/arch/arm/include/asm/mach-imx/module_fuse.h
> > > > b/arch/arm/include/asm/mach-imx/module_fuse.h new file mode
> 100644
> > > > index 0000000000..6b93f0402e
> > > > --- /dev/null
> > > > +++ b/arch/arm/include/asm/mach-imx/module_fuse.h
> > > > @@ -0,0 +1,127 @@
> > > > +/* SPDX-License-Identifier: GPL-2.0+ */
> > > > +/*
> > > > + * Copyright 2019 NXP
> > > > + */
> > > > +
> > > > +#ifndef __MODULE_FUSE_H__
> > > > +#define __MODULE_FUSE_H__
> > > > +
> > > > +enum fuse_module_type {
> > > > +	MODULE_TSC,
> > > > +	MODULE_ADC1,
> > > > +	MODULE_ADC2,
> > > > +	MODULE_SIM1,
> > > > +	MODULE_SIM2,
> > > > +	MODULE_FLEXCAN1,
> > > > +	MODULE_FLEXCAN2,
> > > > +	MODULE_SPDIF,
> > > > +	MODULE_EIM,
> > > > +	MODULE_SD1,
> > > > +	MODULE_SD2,
> > > > +	MODULE_SD3,
> > > > +	MODULE_SD4,
> > > > +	MODULE_QSPI1,
> > > > +	MODULE_QSPI2,
> > > > +	MODULE_GPMI,
> > > > +	MODULE_APBHDMA,
> > > > +	MODULE_LCDIF,
> > > > +	MODULE_PXP,
> > > > +	MODULE_CSI,
> > > > +	MODULE_ENET1,
> > > > +	MODULE_ENET2,
> > > > +	MODULE_CAAM,
> > > > +	MODULE_USB_OTG1,
> > > > +	MODULE_USB_OTG2,
> > > > +	MODULE_SAI2,
> > > > +	MODULE_SAI3,
> > > > +	MODULE_BEE,
> > > > +	MODULE_UART1,
> > > > +	MODULE_UART2,
> > > > +	MODULE_UART3,
> > > > +	MODULE_UART4,
> > > > +	MODULE_UART5,
> > > > +	MODULE_UART6,
> > > > +	MODULE_UART7,
> > > > +	MODULE_UART8,
> > > > +	MODULE_PWM5,
> > > > +	MODULE_PWM6,
> > > > +	MODULE_PWM7,
> > > > +	MODULE_PWM8,
> > > > +	MODULE_ECSPI1,
> > > > +	MODULE_ECSPI2,
> > > > +	MODULE_ECSPI3,
> > > > +	MODULE_ECSPI4,
> > > > +	MODULE_ECSPI5,
> > > > +	MODULE_I2C1,
> > > > +	MODULE_I2C2,
> > > > +	MODULE_I2C3,
> > > > +	MODULE_I2C4,
> > > > +	MODULE_GPT1,
> > > > +	MODULE_GPT2,
> > > > +	MODULE_EPIT1,
> > > > +	MODULE_EPIT2,
> > > > +	MODULE_EPDC,
> > > > +	MODULE_ESAI,
> > > > +	MODULE_DCP,
> > > > +	MODULE_DCP_CRYPTO,
> > > > +};
> > > > +
> > > > +struct fuse_entry_desc {
> > > > +	enum fuse_module_type module;
> > > > +	const char *node_path;
> > > > +	u32 fuse_word_offset;
> > > > +	u32 fuse_bit_offset;
> > > > +	u32 status;
> > > > +};
> > > > +
> > > > +#if !IS_ENABLED(CONFIG_IMX_MODULE_FUSE)
> > > > +static inline u32 check_module_fused(enum fuse_module_type
> > > > module) {
> > > > +	return 0;
> > > > +};
> > > > +
> > > > +static inline u32 esdhc_fused(u32 base_addr) {
> > > > +	return 0;
> > > > +};
> > > > +
> > > > +static inline u32 ecspi_fused(u32 base_addr) {
> > > > +	return 0;
> > > > +};
> > > > +
> > > > +static inline u32 uart_fused(u32 base_addr) {
> > > > +	return 0;
> > > > +};
> > > > +
> > > > +static inline u32 usb_fused(u32 base_addr) {
> > > > +	return 0;
> > > > +};
> > > > +
> > > > +static inline u32 qspi_fused(u32 base_addr) {
> > > > +	return 0;
> > > > +};
> > > > +
> > > > +static inline u32 i2c_fused(u32 base_addr) {
> > > > +	return 0;
> > > > +};
> > > > +
> > > > +static inline u32 enet_fused(u32 base_addr) {
> > > > +	return 0;
> > > > +};
> > > > +#else
> > > > +u32 check_module_fused(enum fuse_module_type module);
> > > > +u32 esdhc_fused(u32 base_addr);
> > > > +u32 ecspi_fused(u32 base_addr);
> > > > +u32 uart_fused(u32 base_addr);
> > > > +u32 usb_fused(u32 base_addr);
> > > > +u32 qspi_fused(u32 base_addr);
> > > > +u32 i2c_fused(u32 base_addr);
> > > > +u32 enet_fused(u32 base_addr);
> > > > +#endif
> > > > +#endif /* __MODULE_FUSE_H__ */
> > > > diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h
> > > > b/arch/arm/include/asm/mach-imx/sys_proto.h index
> > > > 79cb4e6dc9..14b016ee99 100644 ---
> > > > a/arch/arm/include/asm/mach-imx/sys_proto.h +++
> > > > b/arch/arm/include/asm/mach-imx/sys_proto.h @@ -9,6 +9,7 @@
> > > >
> > > >  #include <asm/io.h>
> > > >  #include <asm/mach-imx/regs-common.h>
> > > > +#include <asm/mach-imx/module_fuse.h>
> > > >  #include <common.h>
> > > >  #include "../arch-imx/cpu.h"
> > > >
> > > > diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> > > > index d3942f6b3f..b8625962a6 100644
> > > > --- a/arch/arm/mach-imx/Kconfig
> > > > +++ b/arch/arm/mach-imx/Kconfig
> > > > @@ -27,6 +27,13 @@ config IMX_BOOTAUX
> > > >  	help
> > > >  	  bootaux [addr] to boot auxiliary core.
> > > >
> > > > +config IMX_MODULE_FUSE
> > > > +	bool "i.MX Module Fuse"
> > > > +	depends on ARCH_MX6
> > > > +	help
> > > > +	  i.MX module fuse to runtime disable some driver,
> > > > including
> > > > +	  Linux OS device node.
> > > > +
> > > >  config USE_IMXIMG_PLUGIN
> > > >  	bool "Use imximage plugin code"
> > > >  	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX7ULP diff --git
> > > > a/arch/arm/mach-imx/mx6/Makefile
> b/arch/arm/mach-imx/mx6/Makefile
> > > > index 81e2913d14..7ea8f91e4f 100644
> > > > --- a/arch/arm/mach-imx/mx6/Makefile
> > > > +++ b/arch/arm/mach-imx/mx6/Makefile
> > > > @@ -6,6 +6,7 @@
> > > >  # (C) Copyright 2011 Freescale Semiconductor, Inc.
> > > >
> > > >  obj-y	:= soc.o clock.o
> > > > +obj-$(CONFIG_IMX_MODULE_FUSE) += module_fuse.o
> > > >  obj-$(CONFIG_SPL_BUILD)	     += ddr.o
> > > >  obj-$(CONFIG_MP)             += mp.o
> > > >  obj-$(CONFIG_MX6UL_LITESOM)  += litesom.o diff --git
> > > > a/arch/arm/mach-imx/mx6/module_fuse.c
> > > > b/arch/arm/mach-imx/mx6/module_fuse.c new file mode 100644 index
> > > > 0000000000..417264b15c
> > > > --- /dev/null
> > > > +++ b/arch/arm/mach-imx/mx6/module_fuse.c
> > > > @@ -0,0 +1,322 @@
> > > > +// SPDX-License-Identifier: GPL-2.0+
> > > > +/*
> > > > + * Copyright 2019 NXP
> > > > + */
> > > > +
> > > > +#include <common.h>
> > > > +#include <fdt_support.h>
> > > > +#include <asm/io.h>
> > > > +#include <asm/arch/sys_proto.h>
> > > > +#include <asm/arch/imx-regs.h>
> > > > +#include <asm/mach-imx/module_fuse.h> #include <linux/errno.h>
> > > > +
> > > > +static struct fuse_entry_desc mx6_fuse_descs[] = { #if
> > > > +defined(CONFIG_MX6ULL)
> > > > +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430,
> > > > 22},
> > > > +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
> > > > 23},
> > > > +	{MODULE_EPDC, "/soc/aips-bus@2200000/epdc@228c000",
> > > > 0x430, 24},
> > > > +	{MODULE_ESAI,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/esai@2024000", 0x430,
> 25},
> > > > +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
> > > > 0x430, 26},
> > > > +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
> > > > 0x430, 27},
> > > > +	{MODULE_SPDIF,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440,
> 2},
> > > > +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000",
> > > > 0x440, 3},
> > > > +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000",
> > > > 0x440, 4},
> > > > +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000",
> > > > 0x440, 5},
> > > > +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000",
> > > > 0x440, 6},
> > > > +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
> > > > +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
> > > > +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000",
> > > > 0x440, 8},
> > > > +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440,
> > > > 9},
> > > > +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440,
> > > > 10},
> > > > +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
> > > > 11},
> > > > +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
> > > > 0x440, 12},
> > > > +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
> > > > 0x440, 13},
> > > > +	{MODULE_DCP, "/soc/aips-bus@2200000/dcp@2280000", 0x440,
> > > > 14},
> > > > +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
> > > > 0x440, 15},
> > > > +	{MODULE_SAI2,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440,
> 24},
> > > > +	{MODULE_SAI3,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440,
> 24},
> > > > +	{MODULE_DCP_CRYPTO,
> "/soc/aips-bus@2200000/dcp@2280000",
> > > > 0x440, 25},
> > > > +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
> > > > 0x440, 26},
> > > > +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
> > > > 0x440, 26},
> > > > +	{MODULE_UART7,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000",
> 0x440,
> > > 26},
> > > > +	{MODULE_UART8, "/soc/aips-bus@2200000/serial@2288000",
> > > > 0x440, 26},
> > > > +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000",
> 0x440,
> > > > 27},
> > > > +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000",
> 0x440,
> > > > 27},
> > > > +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000",
> 0x440,
> > > > 27},
> > > > +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000",
> 0x440,
> > > > 27},
> > > > +	{MODULE_ECSPI3,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440,
> > > 28},
> > > > +	{MODULE_ECSPI4,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440,
> > > 28},
> > > > +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
> > > > 29},
> > > > +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
> > > > 29},
> > > > +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
> > > > 30},
> > > > +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000",
> > > > 0x440, 31},
> > > > +	/* Paths for older imx tree: */
> > > > +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000",
> > > > 0x430, 22},
> > > > +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000",
> > > > 0x430, 23},
> > > > +	{MODULE_EPDC, "/soc/aips-bus@02200000/epdc@0228c000",
> > > > 0x430, 24},
> > > > +	{MODULE_ESAI,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/esai@02024000",
> 0x430,
> > > 25},
> > > > +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
> > > > 0x430, 26},
> > > > +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
> > > > 0x430, 27},
> > > > +	{MODULE_SPDIF,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000",
> > > > 0x440,
> > > 2},
> > > > +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000",
> > > > 0x440, 3},
> > > > +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000",
> > > > 0x440, 4},
> > > > +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000",
> > > > 0x440, 5},
> > > > +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
> > > > 0x440, 6},
> > > > +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
> > > > +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
> > > > +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
> > > > 0x440, 8},
> > > > +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000",
> > > > 0x440, 9},
> > > > +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000",
> > > > 0x440, 10},
> > > > +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000",
> > > > 0x440, 11},
> > > > +	{MODULE_ENET1,
> > > > "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
> > > > +	{MODULE_ENET2,
> > > > "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
> > > > +	{MODULE_DCP, "/soc/aips-bus@02200000/dcp@02280000",
> > > > 0x440, 14},
> > > > +	{MODULE_USB_OTG2,
> "/soc/aips-bus@02100000/usb@02184200",
> > > > 0x440, 15},
> > > > +	{MODULE_SAI2,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000",
> 0x440,
> > > 24},
> > > > +	{MODULE_SAI3,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000",
> 0x440,
> > > 24},
> > > > +	{MODULE_DCP_CRYPTO,
> > > > "/soc/aips-bus@02200000/dcp@02280000", 0x440, 25},
> > > > +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
> > > > 0x440, 26},
> > > > +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
> > > > 0x440, 26},
> > > > +	{MODULE_UART7,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000",
> > > 0x440,
> > > > 26},
> > > > +	{MODULE_UART8, "/soc/aips-bus@02200000/serial@02288000",
> > > > 0x440, 26},
> > > > +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000",
> > > > 0x440, 27},
> > > > +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000",
> > > > 0x440, 27},
> > > > +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000",
> > > > 0x440, 27},
> > > > +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000",
> > > > 0x440, 27},
> > > > +	{MODULE_ECSPI3,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000",
> > > > 0x440,
> > > 28},
> > > > +	{MODULE_ECSPI4,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000",
> > > > 0x440,
> > > 28},
> > > > +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000",
> > > > 0x440, 29},
> > > > +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000",
> > > > 0x440, 29},
> > > > +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000",
> > > > 0x440, 30},
> > > > +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",
> > > > 0x440, 31}, +#elif defined(CONFIG_MX6UL)
> > > > +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430,
> > > > 22},
> > > > +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
> > > > 23},
> > > > +	{MODULE_SIM1, "/soc/aips-bus@2100000/sim@218c000", 0x430,
> > > > 24},
> > > > +	{MODULE_SIM2, "/soc/aips-bus@2100000/sim@21b4000", 0x430,
> > > > 25},
> > > > +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
> > > > 0x430, 26},
> > > > +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
> > > > 0x430, 27},
> > > > +	{MODULE_SPDIF,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440,
> 2},
> > > > +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000",
> > > > 0x440, 3},
> > > > +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000",
> > > > 0x440, 4},
> > > > +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000",
> > > > 0x440, 5},
> > > > +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000",
> > > > 0x440, 6},
> > > > +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
> > > > +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
> > > > +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000",
> > > > 0x440, 8},
> > > > +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440,
> > > > 9},
> > > > +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440,
> > > > 10},
> > > > +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
> > > > 11},
> > > > +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
> > > > 0x440, 12},
> > > > +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
> > > > 0x440, 13},
> > > > +	{MODULE_CAAM, "/soc/aips-bus@2100000/caam@2140000",
> > > > 0x440, 14},
> > > > +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
> > > > 0x440, 15},
> > > > +	{MODULE_SAI2,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440,
> 24},
> > > > +	{MODULE_SAI3,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440,
> 24},
> > > > +	{MODULE_BEE, "/soc/aips-bus@2000000/bee@2044000", 0x440,
> > > > 25},
> > > > +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
> > > > 0x440, 26},
> > > > +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
> > > > 0x440, 26},
> > > > +	{MODULE_UART7,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000",
> 0x440,
> > > 26},
> > > > +	{MODULE_UART8,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/serial@2024000",
> 0x440,
> > > 26},
> > > > +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000",
> 0x440,
> > > > 27},
> > > > +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000",
> 0x440,
> > > > 27},
> > > > +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000",
> 0x440,
> > > > 27},
> > > > +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000",
> 0x440,
> > > > 27},
> > > > +	{MODULE_ECSPI3,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440,
> > > 28},
> > > > +	{MODULE_ECSPI4,
> > > > "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440,
> > > 28},
> > > > +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
> > > > 29},
> > > > +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
> > > > 29},
> > > > +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
> > > > 30},
> > > > +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000",
> > > > 0x440, 31},
> > > > +	/* Paths for older imx tree: */
> > > > +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000",
> > > > 0x430, 22},
> > > > +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000",
> > > > 0x430, 23},
> > > > +	{MODULE_SIM1, "/soc/aips-bus@02100000/sim@0218c000",
> > > > 0x430, 24},
> > > > +	{MODULE_SIM2, "/soc/aips-bus@02100000/sim@021b4000",
> > > > 0x430, 25},
> > > > +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
> > > > 0x430, 26},
> > > > +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
> > > > 0x430, 27},
> > > > +	{MODULE_SPDIF,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000",
> > > > 0x440,
> > > 2},
> > > > +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000",
> > > > 0x440, 3},
> > > > +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000",
> > > > 0x440, 4},
> > > > +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000",
> > > > 0x440, 5},
> > > > +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
> > > > 0x440, 6},
> > > > +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
> > > > +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
> > > > +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
> > > > 0x440, 8},
> > > > +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000",
> > > > 0x440, 9},
> > > > +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000",
> > > > 0x440, 10},
> > > > +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000",
> > > > 0x440, 11},
> > > > +	{MODULE_ENET1,
> > > > "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
> > > > +	{MODULE_ENET2,
> > > > "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
> > > > +	{MODULE_CAAM, "/soc/aips-bus@02100000/caam@2140000",
> > > > 0x440, 14},
> > > > +	{MODULE_USB_OTG2,
> "/soc/aips-bus@02100000/usb@02184200",
> > > > 0x440, 15},
> > > > +	{MODULE_SAI2,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000",
> 0x440,
> > > 24},
> > > > +	{MODULE_SAI3,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000",
> 0x440,
> > > 24},
> > > > +	{MODULE_BEE, "/soc/aips-bus@02000000/bee@02044000",
> > > > 0x440, 25},
> > > > +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
> > > > 0x440, 26},
> > > > +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
> > > > 0x440, 26},
> > > > +	{MODULE_UART7,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000",
> > > 0x440,
> > > > 26},
> > > > +	{MODULE_UART8,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/serial@02024000",
> > > 0x440,
> > > > 26},
> > > > +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000",
> > > > 0x440, 27},
> > > > +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000",
> > > > 0x440, 27},
> > > > +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000",
> > > > 0x440, 27},
> > > > +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000",
> > > > 0x440, 27},
> > > > +	{MODULE_ECSPI3,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000",
> > > > 0x440,
> > > 28},
> > > > +	{MODULE_ECSPI4,
> > > > "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000",
> > > > 0x440,
> > > 28},
> > > > +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000",
> > > > 0x440, 29},
> > > > +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000",
> > > > 0x440, 29},
> > > > +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000",
> > > > 0x440, 30},
> > > > +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",
> > >
> > > I'm wondering if there would be a way to avoid the hardcoded DTS
> > > patch ("/soc/aips-bus@02000000/epit@020d4000") ?
> > >
> > > Maybe, after reading the the OCOTP values this could be found
> > > dynamically (by using the e.g. i2c@021f8000 string) on the DTS
> > > already stored in RAM (which is thereafter passed to Linux kernel at
> > > bootm execution) ?
> > >
> > > > 0x440, 31}, +#endif
> > > > +};
> > > > +
> > > > +u32 check_module_fused(enum fuse_module_type module) {
> > > > +	u32 i, reg;
> > > > +
> > > > +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
> > > > +		if (mx6_fuse_descs[i].module == module) {
> > > > +			reg = readl(OCOTP_BASE_ADDR +
> > > > +
> > > > mx6_fuse_descs[i].fuse_word_offset);
> > > > +			if (reg &
> > > > BIT(mx6_fuse_descs[i].fuse_bit_offset))
> > > > +				return 1; /* disabled */
> > > > +			else
> > > > +				return 0; /* enabled */
> > > > +		}
> > > > +	}
> > > > +
> > > > +	return  0; /* Not has a fuse, always enabled */ }
> > > > +
> > > > +#ifdef CONFIG_OF_SYSTEM_SETUP
> > > > +int ft_system_setup(void *blob, bd_t *bd) {
> > > > +	const char *status = "disabled";
> > > > +	u32 i, reg;
> > > > +	int rc, off;
> > > > +
> > > > +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
> > > > +		reg = readl(OCOTP_BASE_ADDR +
> > > > +			    mx6_fuse_descs[i].fuse_word_offset);
> > > > +		if (reg &
> > > > BIT(mx6_fuse_descs[i].fuse_bit_offset)) {
> > > > +			off = fdt_path_offset(blob,
> > > > +
> > > > mx6_fuse_descs[i].node_path); +
> > > > +			if (off < 0)
> > > > +				continue; /* Not found, skip it
> > > > */ +add_status:
> > > > +			rc = fdt_setprop(blob, nodeoff, "status",
> > > > status,
> > > > +					 strlen(status) + 1);
> > > > +			if (rc) {
> > > > +				if (rc == -FDT_ERR_NOSPACE) {
> > > > +					rc =
> > > > fdt_increase_size(blob, 512);
> > > > +					if (!rc)
> > > > +						goto add_status;
> > > > +				}
> > > > +				printf("Unable to update property
> > > > %s:%s, err=%s\n", mx6_fuse_descs[i].node_path, "status",
> > > > fdt_strerror(rc));
> > > > +			} else {
> > > > +				printf("Modify %s disabled\n",
> > > > mx6_fuse_descs[i].node_path);
> > > > +			}
> > > > +		}
> > > > +	}
> > > > +
> > > > +	return 0;
> > > > +}
> > > > +#endif
> > > > +
> > > > +u32 esdhc_fused(u32 base_addr)
> > > > +{
> > > > +	switch (base_addr) {
> > > > +	case USDHC1_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_SD1);
> > > > +	case USDHC2_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_SD2); #ifdef
> > > USDHC3_BASE_ADDR
> > > > +	case USDHC3_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_SD3); #endif
> > > > #ifdef +USDHC4_BASE_ADDR
> > > > +	case USDHC4_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_SD4); #endif
> > > > +	default:
> > > > +		return 0;
> > > > +	}
> > > > +}
> > > > +
> > > > +u32 ecspi_fused(u32 base_addr)
> > > > +{
> > > > +	switch (base_addr) {
> > > > +	case ECSPI1_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_ECSPI1);
> > > > +	case ECSPI2_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_ECSPI2);
> > > > +	case ECSPI3_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_ECSPI3);
> > > > +	case ECSPI4_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_ECSPI4);
> > > > +#ifdef ECSPI5_BASE_ADDR
> > > > +	case ECSPI5_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_ECSPI5);
> > > > +#endif
> > > > +	default:
> > > > +		return 0;
> > > > +	}
> > > > +}
> > > > +
> > > > +u32 usb_fused(u32 base_addr)
> > > > +{
> > > > +	int i = (base_addr - USB_BASE_ADDR) / 0x200;
> > > > +
> > > > +	return check_module_fused(MODULE_USB_OTG1 + i); }
> > > > +
> > > > +u32 qspi_fused(u32 base_addr)
> > > > +{
> > > > +	switch (base_addr) {
> > > > +#ifdef QSPI1_BASE_ADDR
> > > > +	case QSPI1_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_QSPI1); #endif
> > > > +
> > > > +#ifdef QSPI2_BASE_ADDR
> > > > +	case QSPI2_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_QSPI2); #endif
> > > > +	default:
> > > > +		return 0;
> > > > +	}
> > > > +}
> > > > +
> > > > +u32 i2c_fused(u32 base_addr)
> > > > +{
> > > > +	switch (base_addr) {
> > > > +	case I2C1_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_I2C1);
> > > > +	case I2C2_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_I2C2);
> > > > +	case I2C3_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_I2C3); #ifdef
> > > I2C4_BASE_ADDR
> > > > +	case I2C4_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_I2C4); #endif
> > > > +	}
> > > > +
> > > > +	return 0;
> > > > +}
> > > > +
> > > > +u32 enet_fused(u32 base_addr)
> > > > +{
> > > > +	switch (base_addr) {
> > > > +	case ENET_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_ENET1); #ifdef
> > > ENET2_BASE_ADDR
> > > > +	case ENET2_BASE_ADDR:
> > > > +		return check_module_fused(MODULE_ENET2); #endif
> > > > +	default:
> > > > +		return 0;
> > > > +	}
> > > > +}
> > >
> > >
> > >
> > >
> > > Best regards,
> > >
> > > Lukasz Majewski
> > >
> > > --
> > >
> > > DENX Software Engineering GmbH,      Managing Director: Wolfgang
> > > Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell,
> > > Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email:
> > > lukma@denx.de
> 
> 
> 
> 
> Best regards,
> 
> Lukasz Majewski
> 
> --
> 
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email:
> lukma@denx.de
Schrempf Frieder July 24, 2019, 6:12 p.m. UTC | #5
Hi Lukasz,

On 24.07.19 14:12, Peng Fan wrote:
> Hi Lukasz,
> 
>> Subject: Re: [U-Boot] [PATCH 1/4] imx: add module fuse support
>>
>> Hi Peng,
>>
>>> Hi Lukasz,
>>>
>>>> Subject: Re: [U-Boot] [PATCH 1/4] imx: add module fuse support
>>>>
>>>> Hi Peng,
>>>>
>>>>> There are different parts from one SoC. Take i.MX6ULL for example,
>>>>> some part might not have ENET, some might have; some might not
>>>>> have USB, some might have. The information could be got from
>>>>> OCOTP, to make one image support the different parts, we need
>>>>> runtime disable linux kernel dts node and uboot driver probe if
>>>>> the corresponding module not exists in the part.
>>>>
>>>> If I understand correctly the concept is interesting to make the
>>>> final binary smaller.
>>>
>>> No. This is to use one image to support multiple parts of a same kind
>>> SoC. So this patch will make the uboot image size larger.
>>>
>>> As described in commit log, some i.MX6UL parts not have enet, some
>>> have Enet,
>>
>> Is there any markings on the SoC? (like MX6ULXXXXXX) which indicates which
>> SoC has enet and which doesn't have one?

Yes, you can look in the datasheets. For i.MX6ULL ([1], [2]) for 
example, there is a table in chapter 1.1, which describes the features 
for the different types and the corresponding part numbers. And the part 
numbers are printed on the chips.

Regards,
Frieder

[1] https://www.nxp.com/docs/en/data-sheet/IMX6ULLCEC.pdf
[2] https://www.nxp.com/docs/en/data-sheet/IMX6ULLIEC.pdf

> 
> I do not have that marketing information. We just have the information
> that to use fuse to indicate whether the module is there.
> 
> Regards,
> Peng.
> 
>>
>>> so we need find a method to make the same image could work on the two
>>> parts, that is what this patch does.
>>
>> Ok. Thanks for explanation.
>>
>>>
>>> Thanks,
>>> Peng.
>>>
>>>>
>>>>>
>>>>> Signed-off-by: Peng Fan <peng.fan@nxp.com>
>>>>> ---
>>>>>   arch/arm/include/asm/mach-imx/module_fuse.h | 127 +++++++++++
>>>>>   arch/arm/include/asm/mach-imx/sys_proto.h   |   1 +
>>>>>   arch/arm/mach-imx/Kconfig                   |   7 +
>>>>>   arch/arm/mach-imx/mx6/Makefile              |   1 +
>>>>>   arch/arm/mach-imx/mx6/module_fuse.c         | 322
>>>>> ++++++++++++++++++++++++++++ 5 files changed, 458 insertions(+)
>>>>>   create mode 100644
>> arch/arm/include/asm/mach-imx/module_fuse.h
>>>>>   create mode 100644 arch/arm/mach-imx/mx6/module_fuse.c
>>>>>
>>>>> diff --git a/arch/arm/include/asm/mach-imx/module_fuse.h
>>>>> b/arch/arm/include/asm/mach-imx/module_fuse.h new file mode
>> 100644
>>>>> index 0000000000..6b93f0402e
>>>>> --- /dev/null
>>>>> +++ b/arch/arm/include/asm/mach-imx/module_fuse.h
>>>>> @@ -0,0 +1,127 @@
>>>>> +/* SPDX-License-Identifier: GPL-2.0+ */
>>>>> +/*
>>>>> + * Copyright 2019 NXP
>>>>> + */
>>>>> +
>>>>> +#ifndef __MODULE_FUSE_H__
>>>>> +#define __MODULE_FUSE_H__
>>>>> +
>>>>> +enum fuse_module_type {
>>>>> +	MODULE_TSC,
>>>>> +	MODULE_ADC1,
>>>>> +	MODULE_ADC2,
>>>>> +	MODULE_SIM1,
>>>>> +	MODULE_SIM2,
>>>>> +	MODULE_FLEXCAN1,
>>>>> +	MODULE_FLEXCAN2,
>>>>> +	MODULE_SPDIF,
>>>>> +	MODULE_EIM,
>>>>> +	MODULE_SD1,
>>>>> +	MODULE_SD2,
>>>>> +	MODULE_SD3,
>>>>> +	MODULE_SD4,
>>>>> +	MODULE_QSPI1,
>>>>> +	MODULE_QSPI2,
>>>>> +	MODULE_GPMI,
>>>>> +	MODULE_APBHDMA,
>>>>> +	MODULE_LCDIF,
>>>>> +	MODULE_PXP,
>>>>> +	MODULE_CSI,
>>>>> +	MODULE_ENET1,
>>>>> +	MODULE_ENET2,
>>>>> +	MODULE_CAAM,
>>>>> +	MODULE_USB_OTG1,
>>>>> +	MODULE_USB_OTG2,
>>>>> +	MODULE_SAI2,
>>>>> +	MODULE_SAI3,
>>>>> +	MODULE_BEE,
>>>>> +	MODULE_UART1,
>>>>> +	MODULE_UART2,
>>>>> +	MODULE_UART3,
>>>>> +	MODULE_UART4,
>>>>> +	MODULE_UART5,
>>>>> +	MODULE_UART6,
>>>>> +	MODULE_UART7,
>>>>> +	MODULE_UART8,
>>>>> +	MODULE_PWM5,
>>>>> +	MODULE_PWM6,
>>>>> +	MODULE_PWM7,
>>>>> +	MODULE_PWM8,
>>>>> +	MODULE_ECSPI1,
>>>>> +	MODULE_ECSPI2,
>>>>> +	MODULE_ECSPI3,
>>>>> +	MODULE_ECSPI4,
>>>>> +	MODULE_ECSPI5,
>>>>> +	MODULE_I2C1,
>>>>> +	MODULE_I2C2,
>>>>> +	MODULE_I2C3,
>>>>> +	MODULE_I2C4,
>>>>> +	MODULE_GPT1,
>>>>> +	MODULE_GPT2,
>>>>> +	MODULE_EPIT1,
>>>>> +	MODULE_EPIT2,
>>>>> +	MODULE_EPDC,
>>>>> +	MODULE_ESAI,
>>>>> +	MODULE_DCP,
>>>>> +	MODULE_DCP_CRYPTO,
>>>>> +};
>>>>> +
>>>>> +struct fuse_entry_desc {
>>>>> +	enum fuse_module_type module;
>>>>> +	const char *node_path;
>>>>> +	u32 fuse_word_offset;
>>>>> +	u32 fuse_bit_offset;
>>>>> +	u32 status;
>>>>> +};
>>>>> +
>>>>> +#if !IS_ENABLED(CONFIG_IMX_MODULE_FUSE)
>>>>> +static inline u32 check_module_fused(enum fuse_module_type
>>>>> module) {
>>>>> +	return 0;
>>>>> +};
>>>>> +
>>>>> +static inline u32 esdhc_fused(u32 base_addr) {
>>>>> +	return 0;
>>>>> +};
>>>>> +
>>>>> +static inline u32 ecspi_fused(u32 base_addr) {
>>>>> +	return 0;
>>>>> +};
>>>>> +
>>>>> +static inline u32 uart_fused(u32 base_addr) {
>>>>> +	return 0;
>>>>> +};
>>>>> +
>>>>> +static inline u32 usb_fused(u32 base_addr) {
>>>>> +	return 0;
>>>>> +};
>>>>> +
>>>>> +static inline u32 qspi_fused(u32 base_addr) {
>>>>> +	return 0;
>>>>> +};
>>>>> +
>>>>> +static inline u32 i2c_fused(u32 base_addr) {
>>>>> +	return 0;
>>>>> +};
>>>>> +
>>>>> +static inline u32 enet_fused(u32 base_addr) {
>>>>> +	return 0;
>>>>> +};
>>>>> +#else
>>>>> +u32 check_module_fused(enum fuse_module_type module);
>>>>> +u32 esdhc_fused(u32 base_addr);
>>>>> +u32 ecspi_fused(u32 base_addr);
>>>>> +u32 uart_fused(u32 base_addr);
>>>>> +u32 usb_fused(u32 base_addr);
>>>>> +u32 qspi_fused(u32 base_addr);
>>>>> +u32 i2c_fused(u32 base_addr);
>>>>> +u32 enet_fused(u32 base_addr);
>>>>> +#endif
>>>>> +#endif /* __MODULE_FUSE_H__ */
>>>>> diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h
>>>>> b/arch/arm/include/asm/mach-imx/sys_proto.h index
>>>>> 79cb4e6dc9..14b016ee99 100644 ---
>>>>> a/arch/arm/include/asm/mach-imx/sys_proto.h +++
>>>>> b/arch/arm/include/asm/mach-imx/sys_proto.h @@ -9,6 +9,7 @@
>>>>>
>>>>>   #include <asm/io.h>
>>>>>   #include <asm/mach-imx/regs-common.h>
>>>>> +#include <asm/mach-imx/module_fuse.h>
>>>>>   #include <common.h>
>>>>>   #include "../arch-imx/cpu.h"
>>>>>
>>>>> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
>>>>> index d3942f6b3f..b8625962a6 100644
>>>>> --- a/arch/arm/mach-imx/Kconfig
>>>>> +++ b/arch/arm/mach-imx/Kconfig
>>>>> @@ -27,6 +27,13 @@ config IMX_BOOTAUX
>>>>>   	help
>>>>>   	  bootaux [addr] to boot auxiliary core.
>>>>>
>>>>> +config IMX_MODULE_FUSE
>>>>> +	bool "i.MX Module Fuse"
>>>>> +	depends on ARCH_MX6
>>>>> +	help
>>>>> +	  i.MX module fuse to runtime disable some driver,
>>>>> including
>>>>> +	  Linux OS device node.
>>>>> +
>>>>>   config USE_IMXIMG_PLUGIN
>>>>>   	bool "Use imximage plugin code"
>>>>>   	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX7ULP diff --git
>>>>> a/arch/arm/mach-imx/mx6/Makefile
>> b/arch/arm/mach-imx/mx6/Makefile
>>>>> index 81e2913d14..7ea8f91e4f 100644
>>>>> --- a/arch/arm/mach-imx/mx6/Makefile
>>>>> +++ b/arch/arm/mach-imx/mx6/Makefile
>>>>> @@ -6,6 +6,7 @@
>>>>>   # (C) Copyright 2011 Freescale Semiconductor, Inc.
>>>>>
>>>>>   obj-y	:= soc.o clock.o
>>>>> +obj-$(CONFIG_IMX_MODULE_FUSE) += module_fuse.o
>>>>>   obj-$(CONFIG_SPL_BUILD)	     += ddr.o
>>>>>   obj-$(CONFIG_MP)             += mp.o
>>>>>   obj-$(CONFIG_MX6UL_LITESOM)  += litesom.o diff --git
>>>>> a/arch/arm/mach-imx/mx6/module_fuse.c
>>>>> b/arch/arm/mach-imx/mx6/module_fuse.c new file mode 100644 index
>>>>> 0000000000..417264b15c
>>>>> --- /dev/null
>>>>> +++ b/arch/arm/mach-imx/mx6/module_fuse.c
>>>>> @@ -0,0 +1,322 @@
>>>>> +// SPDX-License-Identifier: GPL-2.0+
>>>>> +/*
>>>>> + * Copyright 2019 NXP
>>>>> + */
>>>>> +
>>>>> +#include <common.h>
>>>>> +#include <fdt_support.h>
>>>>> +#include <asm/io.h>
>>>>> +#include <asm/arch/sys_proto.h>
>>>>> +#include <asm/arch/imx-regs.h>
>>>>> +#include <asm/mach-imx/module_fuse.h> #include <linux/errno.h>
>>>>> +
>>>>> +static struct fuse_entry_desc mx6_fuse_descs[] = { #if
>>>>> +defined(CONFIG_MX6ULL)
>>>>> +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430,
>>>>> 22},
>>>>> +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
>>>>> 23},
>>>>> +	{MODULE_EPDC, "/soc/aips-bus@2200000/epdc@228c000",
>>>>> 0x430, 24},
>>>>> +	{MODULE_ESAI,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/esai@2024000", 0x430,
>> 25},
>>>>> +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
>>>>> 0x430, 26},
>>>>> +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
>>>>> 0x430, 27},
>>>>> +	{MODULE_SPDIF,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440,
>> 2},
>>>>> +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000",
>>>>> 0x440, 3},
>>>>> +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000",
>>>>> 0x440, 4},
>>>>> +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000",
>>>>> 0x440, 5},
>>>>> +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000",
>>>>> 0x440, 6},
>>>>> +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
>>>>> +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
>>>>> +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000",
>>>>> 0x440, 8},
>>>>> +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440,
>>>>> 9},
>>>>> +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440,
>>>>> 10},
>>>>> +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
>>>>> 11},
>>>>> +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
>>>>> 0x440, 12},
>>>>> +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
>>>>> 0x440, 13},
>>>>> +	{MODULE_DCP, "/soc/aips-bus@2200000/dcp@2280000", 0x440,
>>>>> 14},
>>>>> +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
>>>>> 0x440, 15},
>>>>> +	{MODULE_SAI2,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440,
>> 24},
>>>>> +	{MODULE_SAI3,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440,
>> 24},
>>>>> +	{MODULE_DCP_CRYPTO,
>> "/soc/aips-bus@2200000/dcp@2280000",
>>>>> 0x440, 25},
>>>>> +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_UART7,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000",
>> 0x440,
>>>> 26},
>>>>> +	{MODULE_UART8, "/soc/aips-bus@2200000/serial@2288000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000",
>> 0x440,
>>>>> 27},
>>>>> +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000",
>> 0x440,
>>>>> 27},
>>>>> +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000",
>> 0x440,
>>>>> 27},
>>>>> +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000",
>> 0x440,
>>>>> 27},
>>>>> +	{MODULE_ECSPI3,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440,
>>>> 28},
>>>>> +	{MODULE_ECSPI4,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440,
>>>> 28},
>>>>> +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
>>>>> 29},
>>>>> +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
>>>>> 29},
>>>>> +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
>>>>> 30},
>>>>> +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000",
>>>>> 0x440, 31},
>>>>> +	/* Paths for older imx tree: */
>>>>> +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000",
>>>>> 0x430, 22},
>>>>> +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000",
>>>>> 0x430, 23},
>>>>> +	{MODULE_EPDC, "/soc/aips-bus@02200000/epdc@0228c000",
>>>>> 0x430, 24},
>>>>> +	{MODULE_ESAI,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/esai@02024000",
>> 0x430,
>>>> 25},
>>>>> +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
>>>>> 0x430, 26},
>>>>> +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
>>>>> 0x430, 27},
>>>>> +	{MODULE_SPDIF,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000",
>>>>> 0x440,
>>>> 2},
>>>>> +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000",
>>>>> 0x440, 3},
>>>>> +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000",
>>>>> 0x440, 4},
>>>>> +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000",
>>>>> 0x440, 5},
>>>>> +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
>>>>> 0x440, 6},
>>>>> +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
>>>>> +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
>>>>> +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
>>>>> 0x440, 8},
>>>>> +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000",
>>>>> 0x440, 9},
>>>>> +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000",
>>>>> 0x440, 10},
>>>>> +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000",
>>>>> 0x440, 11},
>>>>> +	{MODULE_ENET1,
>>>>> "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
>>>>> +	{MODULE_ENET2,
>>>>> "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
>>>>> +	{MODULE_DCP, "/soc/aips-bus@02200000/dcp@02280000",
>>>>> 0x440, 14},
>>>>> +	{MODULE_USB_OTG2,
>> "/soc/aips-bus@02100000/usb@02184200",
>>>>> 0x440, 15},
>>>>> +	{MODULE_SAI2,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000",
>> 0x440,
>>>> 24},
>>>>> +	{MODULE_SAI3,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000",
>> 0x440,
>>>> 24},
>>>>> +	{MODULE_DCP_CRYPTO,
>>>>> "/soc/aips-bus@02200000/dcp@02280000", 0x440, 25},
>>>>> +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_UART7,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000",
>>>> 0x440,
>>>>> 26},
>>>>> +	{MODULE_UART8, "/soc/aips-bus@02200000/serial@02288000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000",
>>>>> 0x440, 27},
>>>>> +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000",
>>>>> 0x440, 27},
>>>>> +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000",
>>>>> 0x440, 27},
>>>>> +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000",
>>>>> 0x440, 27},
>>>>> +	{MODULE_ECSPI3,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000",
>>>>> 0x440,
>>>> 28},
>>>>> +	{MODULE_ECSPI4,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000",
>>>>> 0x440,
>>>> 28},
>>>>> +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000",
>>>>> 0x440, 29},
>>>>> +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000",
>>>>> 0x440, 29},
>>>>> +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000",
>>>>> 0x440, 30},
>>>>> +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",
>>>>> 0x440, 31}, +#elif defined(CONFIG_MX6UL)
>>>>> +	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430,
>>>>> 22},
>>>>> +	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430,
>>>>> 23},
>>>>> +	{MODULE_SIM1, "/soc/aips-bus@2100000/sim@218c000", 0x430,
>>>>> 24},
>>>>> +	{MODULE_SIM2, "/soc/aips-bus@2100000/sim@21b4000", 0x430,
>>>>> 25},
>>>>> +	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000",
>>>>> 0x430, 26},
>>>>> +	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000",
>>>>> 0x430, 27},
>>>>> +	{MODULE_SPDIF,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440,
>> 2},
>>>>> +	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000",
>>>>> 0x440, 3},
>>>>> +	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000",
>>>>> 0x440, 4},
>>>>> +	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000",
>>>>> 0x440, 5},
>>>>> +	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000",
>>>>> 0x440, 6},
>>>>> +	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
>>>>> +	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
>>>>> +	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000",
>>>>> 0x440, 8},
>>>>> +	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440,
>>>>> 9},
>>>>> +	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440,
>>>>> 10},
>>>>> +	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440,
>>>>> 11},
>>>>> +	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000",
>>>>> 0x440, 12},
>>>>> +	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000",
>>>>> 0x440, 13},
>>>>> +	{MODULE_CAAM, "/soc/aips-bus@2100000/caam@2140000",
>>>>> 0x440, 14},
>>>>> +	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200",
>>>>> 0x440, 15},
>>>>> +	{MODULE_SAI2,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440,
>> 24},
>>>>> +	{MODULE_SAI3,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440,
>> 24},
>>>>> +	{MODULE_BEE, "/soc/aips-bus@2000000/bee@2044000", 0x440,
>>>>> 25},
>>>>> +	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_UART7,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000",
>> 0x440,
>>>> 26},
>>>>> +	{MODULE_UART8,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/serial@2024000",
>> 0x440,
>>>> 26},
>>>>> +	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000",
>> 0x440,
>>>>> 27},
>>>>> +	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000",
>> 0x440,
>>>>> 27},
>>>>> +	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000",
>> 0x440,
>>>>> 27},
>>>>> +	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000",
>> 0x440,
>>>>> 27},
>>>>> +	{MODULE_ECSPI3,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440,
>>>> 28},
>>>>> +	{MODULE_ECSPI4,
>>>>> "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440,
>>>> 28},
>>>>> +	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440,
>>>>> 29},
>>>>> +	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440,
>>>>> 29},
>>>>> +	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440,
>>>>> 30},
>>>>> +	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000",
>>>>> 0x440, 31},
>>>>> +	/* Paths for older imx tree: */
>>>>> +	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000",
>>>>> 0x430, 22},
>>>>> +	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000",
>>>>> 0x430, 23},
>>>>> +	{MODULE_SIM1, "/soc/aips-bus@02100000/sim@0218c000",
>>>>> 0x430, 24},
>>>>> +	{MODULE_SIM2, "/soc/aips-bus@02100000/sim@021b4000",
>>>>> 0x430, 25},
>>>>> +	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000",
>>>>> 0x430, 26},
>>>>> +	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000",
>>>>> 0x430, 27},
>>>>> +	{MODULE_SPDIF,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000",
>>>>> 0x440,
>>>> 2},
>>>>> +	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000",
>>>>> 0x440, 3},
>>>>> +	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000",
>>>>> 0x440, 4},
>>>>> +	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000",
>>>>> 0x440, 5},
>>>>> +	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000",
>>>>> 0x440, 6},
>>>>> +	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
>>>>> +	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
>>>>> +	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000",
>>>>> 0x440, 8},
>>>>> +	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000",
>>>>> 0x440, 9},
>>>>> +	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000",
>>>>> 0x440, 10},
>>>>> +	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000",
>>>>> 0x440, 11},
>>>>> +	{MODULE_ENET1,
>>>>> "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
>>>>> +	{MODULE_ENET2,
>>>>> "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
>>>>> +	{MODULE_CAAM, "/soc/aips-bus@02100000/caam@2140000",
>>>>> 0x440, 14},
>>>>> +	{MODULE_USB_OTG2,
>> "/soc/aips-bus@02100000/usb@02184200",
>>>>> 0x440, 15},
>>>>> +	{MODULE_SAI2,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000",
>> 0x440,
>>>> 24},
>>>>> +	{MODULE_SAI3,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000",
>> 0x440,
>>>> 24},
>>>>> +	{MODULE_BEE, "/soc/aips-bus@02000000/bee@02044000",
>>>>> 0x440, 25},
>>>>> +	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000",
>>>>> 0x440, 26},
>>>>> +	{MODULE_UART7,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000",
>>>> 0x440,
>>>>> 26},
>>>>> +	{MODULE_UART8,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/serial@02024000",
>>>> 0x440,
>>>>> 26},
>>>>> +	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000",
>>>>> 0x440, 27},
>>>>> +	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000",
>>>>> 0x440, 27},
>>>>> +	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000",
>>>>> 0x440, 27},
>>>>> +	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000",
>>>>> 0x440, 27},
>>>>> +	{MODULE_ECSPI3,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000",
>>>>> 0x440,
>>>> 28},
>>>>> +	{MODULE_ECSPI4,
>>>>> "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000",
>>>>> 0x440,
>>>> 28},
>>>>> +	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000",
>>>>> 0x440, 29},
>>>>> +	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000",
>>>>> 0x440, 29},
>>>>> +	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000",
>>>>> 0x440, 30},
>>>>> +	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000",
>>>>
>>>> I'm wondering if there would be a way to avoid the hardcoded DTS
>>>> patch ("/soc/aips-bus@02000000/epit@020d4000") ?
>>>>
>>>> Maybe, after reading the the OCOTP values this could be found
>>>> dynamically (by using the e.g. i2c@021f8000 string) on the DTS
>>>> already stored in RAM (which is thereafter passed to Linux kernel at
>>>> bootm execution) ?
>>>>
>>>>> 0x440, 31}, +#endif
>>>>> +};
>>>>> +
>>>>> +u32 check_module_fused(enum fuse_module_type module) {
>>>>> +	u32 i, reg;
>>>>> +
>>>>> +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
>>>>> +		if (mx6_fuse_descs[i].module == module) {
>>>>> +			reg = readl(OCOTP_BASE_ADDR +
>>>>> +
>>>>> mx6_fuse_descs[i].fuse_word_offset);
>>>>> +			if (reg &
>>>>> BIT(mx6_fuse_descs[i].fuse_bit_offset))
>>>>> +				return 1; /* disabled */
>>>>> +			else
>>>>> +				return 0; /* enabled */
>>>>> +		}
>>>>> +	}
>>>>> +
>>>>> +	return  0; /* Not has a fuse, always enabled */ }
>>>>> +
>>>>> +#ifdef CONFIG_OF_SYSTEM_SETUP
>>>>> +int ft_system_setup(void *blob, bd_t *bd) {
>>>>> +	const char *status = "disabled";
>>>>> +	u32 i, reg;
>>>>> +	int rc, off;
>>>>> +
>>>>> +	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
>>>>> +		reg = readl(OCOTP_BASE_ADDR +
>>>>> +			    mx6_fuse_descs[i].fuse_word_offset);
>>>>> +		if (reg &
>>>>> BIT(mx6_fuse_descs[i].fuse_bit_offset)) {
>>>>> +			off = fdt_path_offset(blob,
>>>>> +
>>>>> mx6_fuse_descs[i].node_path); +
>>>>> +			if (off < 0)
>>>>> +				continue; /* Not found, skip it
>>>>> */ +add_status:
>>>>> +			rc = fdt_setprop(blob, nodeoff, "status",
>>>>> status,
>>>>> +					 strlen(status) + 1);
>>>>> +			if (rc) {
>>>>> +				if (rc == -FDT_ERR_NOSPACE) {
>>>>> +					rc =
>>>>> fdt_increase_size(blob, 512);
>>>>> +					if (!rc)
>>>>> +						goto add_status;
>>>>> +				}
>>>>> +				printf("Unable to update property
>>>>> %s:%s, err=%s\n", mx6_fuse_descs[i].node_path, "status",
>>>>> fdt_strerror(rc));
>>>>> +			} else {
>>>>> +				printf("Modify %s disabled\n",
>>>>> mx6_fuse_descs[i].node_path);
>>>>> +			}
>>>>> +		}
>>>>> +	}
>>>>> +
>>>>> +	return 0;
>>>>> +}
>>>>> +#endif
>>>>> +
>>>>> +u32 esdhc_fused(u32 base_addr)
>>>>> +{
>>>>> +	switch (base_addr) {
>>>>> +	case USDHC1_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_SD1);
>>>>> +	case USDHC2_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_SD2); #ifdef
>>>> USDHC3_BASE_ADDR
>>>>> +	case USDHC3_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_SD3); #endif
>>>>> #ifdef +USDHC4_BASE_ADDR
>>>>> +	case USDHC4_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_SD4); #endif
>>>>> +	default:
>>>>> +		return 0;
>>>>> +	}
>>>>> +}
>>>>> +
>>>>> +u32 ecspi_fused(u32 base_addr)
>>>>> +{
>>>>> +	switch (base_addr) {
>>>>> +	case ECSPI1_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_ECSPI1);
>>>>> +	case ECSPI2_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_ECSPI2);
>>>>> +	case ECSPI3_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_ECSPI3);
>>>>> +	case ECSPI4_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_ECSPI4);
>>>>> +#ifdef ECSPI5_BASE_ADDR
>>>>> +	case ECSPI5_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_ECSPI5);
>>>>> +#endif
>>>>> +	default:
>>>>> +		return 0;
>>>>> +	}
>>>>> +}
>>>>> +
>>>>> +u32 usb_fused(u32 base_addr)
>>>>> +{
>>>>> +	int i = (base_addr - USB_BASE_ADDR) / 0x200;
>>>>> +
>>>>> +	return check_module_fused(MODULE_USB_OTG1 + i); }
>>>>> +
>>>>> +u32 qspi_fused(u32 base_addr)
>>>>> +{
>>>>> +	switch (base_addr) {
>>>>> +#ifdef QSPI1_BASE_ADDR
>>>>> +	case QSPI1_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_QSPI1); #endif
>>>>> +
>>>>> +#ifdef QSPI2_BASE_ADDR
>>>>> +	case QSPI2_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_QSPI2); #endif
>>>>> +	default:
>>>>> +		return 0;
>>>>> +	}
>>>>> +}
>>>>> +
>>>>> +u32 i2c_fused(u32 base_addr)
>>>>> +{
>>>>> +	switch (base_addr) {
>>>>> +	case I2C1_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_I2C1);
>>>>> +	case I2C2_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_I2C2);
>>>>> +	case I2C3_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_I2C3); #ifdef
>>>> I2C4_BASE_ADDR
>>>>> +	case I2C4_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_I2C4); #endif
>>>>> +	}
>>>>> +
>>>>> +	return 0;
>>>>> +}
>>>>> +
>>>>> +u32 enet_fused(u32 base_addr)
>>>>> +{
>>>>> +	switch (base_addr) {
>>>>> +	case ENET_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_ENET1); #ifdef
>>>> ENET2_BASE_ADDR
>>>>> +	case ENET2_BASE_ADDR:
>>>>> +		return check_module_fused(MODULE_ENET2); #endif
>>>>> +	default:
>>>>> +		return 0;
>>>>> +	}
>>>>> +}
>>>>
>>>>
>>>>
>>>>
>>>> Best regards,
>>>>
>>>> Lukasz Majewski
>>>>
>>>> --
>>>>
>>>> DENX Software Engineering GmbH,      Managing Director: Wolfgang
>>>> Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell,
>>>> Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email:
>>>> lukma@denx.de
>>
>>
>>
>>
>> Best regards,
>>
>> Lukasz Majewski
>>
>> --
>>
>> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
>> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
>> Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email:
>> lukma@denx.de
> _______________________________________________
> U-Boot mailing list
> U-Boot@lists.denx.de
> https://lists.denx.de/listinfo/u-boot
>
Lukasz Majewski July 24, 2019, 7:39 p.m. UTC | #6
Hi Frieder,

> >>
> >> Is there any markings on the SoC? (like MX6ULXXXXXX) which
> >> indicates which SoC has enet and which doesn't have one?  
> 
> Yes, you can look in the datasheets. For i.MX6ULL ([1], [2]) for 
> example, there is a table in chapter 1.1, which describes the
> features for the different types and the corresponding part numbers.
> And the part numbers are printed on the chips.

Thanks for the info.

> 
> Regards,
> Frieder
> 
> [1] https://www.nxp.com/docs/en/data-sheet/IMX6ULLCEC.pdf
> [2] https://www.nxp.com/docs/en/data-sheet/IMX6ULLIEC.pdf




Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de

Patch
diff mbox series

diff --git a/arch/arm/include/asm/mach-imx/module_fuse.h b/arch/arm/include/asm/mach-imx/module_fuse.h
new file mode 100644
index 0000000000..6b93f0402e
--- /dev/null
+++ b/arch/arm/include/asm/mach-imx/module_fuse.h
@@ -0,0 +1,127 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2019 NXP
+ */
+
+#ifndef __MODULE_FUSE_H__
+#define __MODULE_FUSE_H__
+
+enum fuse_module_type {
+	MODULE_TSC,
+	MODULE_ADC1,
+	MODULE_ADC2,
+	MODULE_SIM1,
+	MODULE_SIM2,
+	MODULE_FLEXCAN1,
+	MODULE_FLEXCAN2,
+	MODULE_SPDIF,
+	MODULE_EIM,
+	MODULE_SD1,
+	MODULE_SD2,
+	MODULE_SD3,
+	MODULE_SD4,
+	MODULE_QSPI1,
+	MODULE_QSPI2,
+	MODULE_GPMI,
+	MODULE_APBHDMA,
+	MODULE_LCDIF,
+	MODULE_PXP,
+	MODULE_CSI,
+	MODULE_ENET1,
+	MODULE_ENET2,
+	MODULE_CAAM,
+	MODULE_USB_OTG1,
+	MODULE_USB_OTG2,
+	MODULE_SAI2,
+	MODULE_SAI3,
+	MODULE_BEE,
+	MODULE_UART1,
+	MODULE_UART2,
+	MODULE_UART3,
+	MODULE_UART4,
+	MODULE_UART5,
+	MODULE_UART6,
+	MODULE_UART7,
+	MODULE_UART8,
+	MODULE_PWM5,
+	MODULE_PWM6,
+	MODULE_PWM7,
+	MODULE_PWM8,
+	MODULE_ECSPI1,
+	MODULE_ECSPI2,
+	MODULE_ECSPI3,
+	MODULE_ECSPI4,
+	MODULE_ECSPI5,
+	MODULE_I2C1,
+	MODULE_I2C2,
+	MODULE_I2C3,
+	MODULE_I2C4,
+	MODULE_GPT1,
+	MODULE_GPT2,
+	MODULE_EPIT1,
+	MODULE_EPIT2,
+	MODULE_EPDC,
+	MODULE_ESAI,
+	MODULE_DCP,
+	MODULE_DCP_CRYPTO,
+};
+
+struct fuse_entry_desc {
+	enum fuse_module_type module;
+	const char *node_path;
+	u32 fuse_word_offset;
+	u32 fuse_bit_offset;
+	u32 status;
+};
+
+#if !IS_ENABLED(CONFIG_IMX_MODULE_FUSE)
+static inline u32 check_module_fused(enum fuse_module_type module)
+{
+	return 0;
+};
+
+static inline u32 esdhc_fused(u32 base_addr)
+{
+	return 0;
+};
+
+static inline u32 ecspi_fused(u32 base_addr)
+{
+	return 0;
+};
+
+static inline u32 uart_fused(u32 base_addr)
+{
+	return 0;
+};
+
+static inline u32 usb_fused(u32 base_addr)
+{
+	return 0;
+};
+
+static inline u32 qspi_fused(u32 base_addr)
+{
+	return 0;
+};
+
+static inline u32 i2c_fused(u32 base_addr)
+{
+	return 0;
+};
+
+static inline u32 enet_fused(u32 base_addr)
+{
+	return 0;
+};
+#else
+u32 check_module_fused(enum fuse_module_type module);
+u32 esdhc_fused(u32 base_addr);
+u32 ecspi_fused(u32 base_addr);
+u32 uart_fused(u32 base_addr);
+u32 usb_fused(u32 base_addr);
+u32 qspi_fused(u32 base_addr);
+u32 i2c_fused(u32 base_addr);
+u32 enet_fused(u32 base_addr);
+#endif
+#endif /* __MODULE_FUSE_H__ */
diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
index 79cb4e6dc9..14b016ee99 100644
--- a/arch/arm/include/asm/mach-imx/sys_proto.h
+++ b/arch/arm/include/asm/mach-imx/sys_proto.h
@@ -9,6 +9,7 @@ 
 
 #include <asm/io.h>
 #include <asm/mach-imx/regs-common.h>
+#include <asm/mach-imx/module_fuse.h>
 #include <common.h>
 #include "../arch-imx/cpu.h"
 
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index d3942f6b3f..b8625962a6 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -27,6 +27,13 @@  config IMX_BOOTAUX
 	help
 	  bootaux [addr] to boot auxiliary core.
 
+config IMX_MODULE_FUSE
+	bool "i.MX Module Fuse"
+	depends on ARCH_MX6
+	help
+	  i.MX module fuse to runtime disable some driver, including
+	  Linux OS device node.
+
 config USE_IMXIMG_PLUGIN
 	bool "Use imximage plugin code"
 	depends on ARCH_MX7 || ARCH_MX6 || ARCH_MX7ULP
diff --git a/arch/arm/mach-imx/mx6/Makefile b/arch/arm/mach-imx/mx6/Makefile
index 81e2913d14..7ea8f91e4f 100644
--- a/arch/arm/mach-imx/mx6/Makefile
+++ b/arch/arm/mach-imx/mx6/Makefile
@@ -6,6 +6,7 @@ 
 # (C) Copyright 2011 Freescale Semiconductor, Inc.
 
 obj-y	:= soc.o clock.o
+obj-$(CONFIG_IMX_MODULE_FUSE) += module_fuse.o
 obj-$(CONFIG_SPL_BUILD)	     += ddr.o
 obj-$(CONFIG_MP)             += mp.o
 obj-$(CONFIG_MX6UL_LITESOM)  += litesom.o
diff --git a/arch/arm/mach-imx/mx6/module_fuse.c b/arch/arm/mach-imx/mx6/module_fuse.c
new file mode 100644
index 0000000000..417264b15c
--- /dev/null
+++ b/arch/arm/mach-imx/mx6/module_fuse.c
@@ -0,0 +1,322 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 NXP
+ */
+
+#include <common.h>
+#include <fdt_support.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/mach-imx/module_fuse.h>
+#include <linux/errno.h>
+
+static struct fuse_entry_desc mx6_fuse_descs[] = {
+#if defined(CONFIG_MX6ULL)
+	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
+	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430, 23},
+	{MODULE_EPDC, "/soc/aips-bus@2200000/epdc@228c000", 0x430, 24},
+	{MODULE_ESAI, "/soc/aips-bus@2000000/spba-bus@2000000/esai@2024000", 0x430, 25},
+	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000", 0x430, 26},
+	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000", 0x430, 27},
+	{MODULE_SPDIF, "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
+	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
+	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440, 4},
+	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440, 5},
+	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440, 6},
+	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
+	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
+	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440, 8},
+	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
+	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
+	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440, 11},
+	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000", 0x440, 12},
+	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000", 0x440, 13},
+	{MODULE_DCP, "/soc/aips-bus@2200000/dcp@2280000", 0x440, 14},
+	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200", 0x440, 15},
+	{MODULE_SAI2, "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
+	{MODULE_SAI3, "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
+	{MODULE_DCP_CRYPTO, "/soc/aips-bus@2200000/dcp@2280000", 0x440, 25},
+	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000", 0x440, 26},
+	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000", 0x440, 26},
+	{MODULE_UART7, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440, 26},
+	{MODULE_UART8, "/soc/aips-bus@2200000/serial@2288000", 0x440, 26},
+	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440, 27},
+	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440, 27},
+	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440, 27},
+	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440, 27},
+	{MODULE_ECSPI3, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440, 28},
+	{MODULE_ECSPI4, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440, 28},
+	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440, 29},
+	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440, 29},
+	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440, 30},
+	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440, 31},
+	/* Paths for older imx tree: */
+	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430, 22},
+	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430, 23},
+	{MODULE_EPDC, "/soc/aips-bus@02200000/epdc@0228c000", 0x430, 24},
+	{MODULE_ESAI, "/soc/aips-bus@02000000/spba-bus@02000000/esai@02024000", 0x430, 25},
+	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000", 0x430, 26},
+	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000", 0x430, 27},
+	{MODULE_SPDIF, "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440, 2},
+	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440, 3},
+	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440, 4},
+	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440, 5},
+	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000", 0x440, 6},
+	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
+	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
+	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000", 0x440, 8},
+	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440, 9},
+	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440, 10},
+	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440, 11},
+	{MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
+	{MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
+	{MODULE_DCP, "/soc/aips-bus@02200000/dcp@02280000", 0x440, 14},
+	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200", 0x440, 15},
+	{MODULE_SAI2, "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440, 24},
+	{MODULE_SAI3, "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440, 24},
+	{MODULE_DCP_CRYPTO, "/soc/aips-bus@02200000/dcp@02280000", 0x440, 25},
+	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000", 0x440, 26},
+	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000", 0x440, 26},
+	{MODULE_UART7, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000", 0x440, 26},
+	{MODULE_UART8, "/soc/aips-bus@02200000/serial@02288000", 0x440, 26},
+	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440, 27},
+	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440, 27},
+	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440, 27},
+	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440, 27},
+	{MODULE_ECSPI3, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440, 28},
+	{MODULE_ECSPI4, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440, 28},
+	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440, 29},
+	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440, 29},
+	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440, 30},
+	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000", 0x440, 31},
+#elif defined(CONFIG_MX6UL)
+	{MODULE_TSC, "/soc/aips-bus@2000000/tsc@2040000", 0x430, 22},
+	{MODULE_ADC2, "/soc/aips-bus@2100000/adc@219c000", 0x430, 23},
+	{MODULE_SIM1, "/soc/aips-bus@2100000/sim@218c000", 0x430, 24},
+	{MODULE_SIM2, "/soc/aips-bus@2100000/sim@21b4000", 0x430, 25},
+	{MODULE_FLEXCAN1, "/soc/aips-bus@2000000/can@2090000", 0x430, 26},
+	{MODULE_FLEXCAN2, "/soc/aips-bus@2000000/can@2094000", 0x430, 27},
+	{MODULE_SPDIF, "/soc/aips-bus@2000000/spba-bus@2000000/spdif@2004000", 0x440, 2},
+	{MODULE_EIM, "/soc/aips-bus@2100000/weim@21b8000", 0x440, 3},
+	{MODULE_SD1, "/soc/aips-bus@2100000/usdhc@2190000", 0x440, 4},
+	{MODULE_SD2, "/soc/aips-bus@2100000/usdhc@2194000", 0x440, 5},
+	{MODULE_QSPI1, "/soc/aips-bus@2100000/qspi@21e0000", 0x440, 6},
+	{MODULE_GPMI, "/soc/gpmi-nand@1806000", 0x440, 7},
+	{MODULE_APBHDMA, "/soc/dma-apbh@1804000", 0x440, 7},
+	{MODULE_LCDIF, "/soc/aips-bus@2100000/lcdif@21c8000", 0x440, 8},
+	{MODULE_PXP, "/soc/aips-bus@2100000/pxp@21cc000", 0x440, 9},
+	{MODULE_CSI, "/soc/aips-bus@2100000/csi@21c4000", 0x440, 10},
+	{MODULE_ADC1, "/soc/aips-bus@2100000/adc@2198000", 0x440, 11},
+	{MODULE_ENET1, "/soc/aips-bus@2100000/ethernet@2188000", 0x440, 12},
+	{MODULE_ENET2, "/soc/aips-bus@2000000/ethernet@20b4000", 0x440, 13},
+	{MODULE_CAAM, "/soc/aips-bus@2100000/caam@2140000", 0x440, 14},
+	{MODULE_USB_OTG2, "/soc/aips-bus@2100000/usb@2184200", 0x440, 15},
+	{MODULE_SAI2, "/soc/aips-bus@2000000/spba-bus@2000000/sai@202c000", 0x440, 24},
+	{MODULE_SAI3, "/soc/aips-bus@2000000/spba-bus@2000000/sai@2030000", 0x440, 24},
+	{MODULE_BEE, "/soc/aips-bus@2000000/bee@2044000", 0x440, 25},
+	{MODULE_UART5, "/soc/aips-bus@2100000/serial@21f4000", 0x440, 26},
+	{MODULE_UART6, "/soc/aips-bus@2100000/serial@21fc000", 0x440, 26},
+	{MODULE_UART7, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2018000", 0x440, 26},
+	{MODULE_UART8, "/soc/aips-bus@2000000/spba-bus@2000000/serial@2024000", 0x440, 26},
+	{MODULE_PWM5, "/soc/aips-bus@2000000/pwm@20f0000", 0x440, 27},
+	{MODULE_PWM6, "/soc/aips-bus@2000000/pwm@20f4000", 0x440, 27},
+	{MODULE_PWM7, "/soc/aips-bus@2000000/pwm@20f8000", 0x440, 27},
+	{MODULE_PWM8, "/soc/aips-bus@2000000/pwm@20fc000", 0x440, 27},
+	{MODULE_ECSPI3, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2010000", 0x440, 28},
+	{MODULE_ECSPI4, "/soc/aips-bus@2000000/spba-bus@2000000/ecspi@2014000", 0x440, 28},
+	{MODULE_I2C3, "/soc/aips-bus@2100000/i2c@21a8000", 0x440, 29},
+	{MODULE_I2C4, "/soc/aips-bus@2100000/i2c@21f8000", 0x440, 29},
+	{MODULE_GPT2, "/soc/aips-bus@2000000/gpt@20e8000", 0x440, 30},
+	{MODULE_EPIT2, "/soc/aips-bus@2000000/epit@20d4000", 0x440, 31},
+	/* Paths for older imx tree: */
+	{MODULE_TSC, "/soc/aips-bus@02000000/tsc@02040000", 0x430, 22},
+	{MODULE_ADC2, "/soc/aips-bus@02100000/adc@0219c000", 0x430, 23},
+	{MODULE_SIM1, "/soc/aips-bus@02100000/sim@0218c000", 0x430, 24},
+	{MODULE_SIM2, "/soc/aips-bus@02100000/sim@021b4000", 0x430, 25},
+	{MODULE_FLEXCAN1, "/soc/aips-bus@02000000/can@02090000", 0x430, 26},
+	{MODULE_FLEXCAN2, "/soc/aips-bus@02000000/can@02094000", 0x430, 27},
+	{MODULE_SPDIF, "/soc/aips-bus@02000000/spba-bus@02000000/spdif@02004000", 0x440, 2},
+	{MODULE_EIM, "/soc/aips-bus@02100000/weim@021b8000", 0x440, 3},
+	{MODULE_SD1, "/soc/aips-bus@02100000/usdhc@02190000", 0x440, 4},
+	{MODULE_SD2, "/soc/aips-bus@02100000/usdhc@02194000", 0x440, 5},
+	{MODULE_QSPI1, "/soc/aips-bus@02100000/qspi@021e0000", 0x440, 6},
+	{MODULE_GPMI, "/soc/gpmi-nand@01806000", 0x440, 7},
+	{MODULE_APBHDMA, "/soc/dma-apbh@01804000", 0x440, 7},
+	{MODULE_LCDIF, "/soc/aips-bus@02100000/lcdif@021c8000", 0x440, 8},
+	{MODULE_PXP, "/soc/aips-bus@02100000/pxp@021cc000", 0x440, 9},
+	{MODULE_CSI, "/soc/aips-bus@02100000/csi@021c4000", 0x440, 10},
+	{MODULE_ADC1, "/soc/aips-bus@02100000/adc@02198000", 0x440, 11},
+	{MODULE_ENET1, "/soc/aips-bus@02100000/ethernet@02188000", 0x440, 12},
+	{MODULE_ENET2, "/soc/aips-bus@02000000/ethernet@020b4000", 0x440, 13},
+	{MODULE_CAAM, "/soc/aips-bus@02100000/caam@2140000", 0x440, 14},
+	{MODULE_USB_OTG2, "/soc/aips-bus@02100000/usb@02184200", 0x440, 15},
+	{MODULE_SAI2, "/soc/aips-bus@02000000/spba-bus@02000000/sai@0202c000", 0x440, 24},
+	{MODULE_SAI3, "/soc/aips-bus@02000000/spba-bus@02000000/sai@02030000", 0x440, 24},
+	{MODULE_BEE, "/soc/aips-bus@02000000/bee@02044000", 0x440, 25},
+	{MODULE_UART5, "/soc/aips-bus@02100000/serial@021f4000", 0x440, 26},
+	{MODULE_UART6, "/soc/aips-bus@02100000/serial@021fc000", 0x440, 26},
+	{MODULE_UART7, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02018000", 0x440, 26},
+	{MODULE_UART8, "/soc/aips-bus@02000000/spba-bus@02000000/serial@02024000", 0x440, 26},
+	{MODULE_PWM5, "/soc/aips-bus@02000000/pwm@020f0000", 0x440, 27},
+	{MODULE_PWM6, "/soc/aips-bus@02000000/pwm@020f4000", 0x440, 27},
+	{MODULE_PWM7, "/soc/aips-bus@02000000/pwm@020f8000", 0x440, 27},
+	{MODULE_PWM8, "/soc/aips-bus@02000000/pwm@020fc000", 0x440, 27},
+	{MODULE_ECSPI3, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02010000", 0x440, 28},
+	{MODULE_ECSPI4, "/soc/aips-bus@02000000/spba-bus@02000000/ecspi@02014000", 0x440, 28},
+	{MODULE_I2C3, "/soc/aips-bus@02100000/i2c@021a8000", 0x440, 29},
+	{MODULE_I2C4, "/soc/aips-bus@02100000/i2c@021f8000", 0x440, 29},
+	{MODULE_GPT2, "/soc/aips-bus@02000000/gpt@020e8000", 0x440, 30},
+	{MODULE_EPIT2, "/soc/aips-bus@02000000/epit@020d4000", 0x440, 31},
+#endif
+};
+
+u32 check_module_fused(enum fuse_module_type module)
+{
+	u32 i, reg;
+
+	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
+		if (mx6_fuse_descs[i].module == module) {
+			reg = readl(OCOTP_BASE_ADDR +
+				    mx6_fuse_descs[i].fuse_word_offset);
+			if (reg & BIT(mx6_fuse_descs[i].fuse_bit_offset))
+				return 1; /* disabled */
+			else
+				return 0; /* enabled */
+		}
+	}
+
+	return  0; /* Not has a fuse, always enabled */
+}
+
+#ifdef CONFIG_OF_SYSTEM_SETUP
+int ft_system_setup(void *blob, bd_t *bd)
+{
+	const char *status = "disabled";
+	u32 i, reg;
+	int rc, off;
+
+	for (i = 0; i < ARRAY_SIZE(mx6_fuse_descs); i++) {
+		reg = readl(OCOTP_BASE_ADDR +
+			    mx6_fuse_descs[i].fuse_word_offset);
+		if (reg & BIT(mx6_fuse_descs[i].fuse_bit_offset)) {
+			off = fdt_path_offset(blob,
+					      mx6_fuse_descs[i].node_path);
+
+			if (off < 0)
+				continue; /* Not found, skip it */
+add_status:
+			rc = fdt_setprop(blob, nodeoff, "status", status,
+					 strlen(status) + 1);
+			if (rc) {
+				if (rc == -FDT_ERR_NOSPACE) {
+					rc = fdt_increase_size(blob, 512);
+					if (!rc)
+						goto add_status;
+				}
+				printf("Unable to update property %s:%s, err=%s\n", mx6_fuse_descs[i].node_path, "status", fdt_strerror(rc));
+			} else {
+				printf("Modify %s disabled\n", mx6_fuse_descs[i].node_path);
+			}
+		}
+	}
+
+	return 0;
+}
+#endif
+
+u32 esdhc_fused(u32 base_addr)
+{
+	switch (base_addr) {
+	case USDHC1_BASE_ADDR:
+		return check_module_fused(MODULE_SD1);
+	case USDHC2_BASE_ADDR:
+		return check_module_fused(MODULE_SD2);
+#ifdef USDHC3_BASE_ADDR
+	case USDHC3_BASE_ADDR:
+		return check_module_fused(MODULE_SD3);
+#endif
+#ifdef USDHC4_BASE_ADDR
+	case USDHC4_BASE_ADDR:
+		return check_module_fused(MODULE_SD4);
+#endif
+	default:
+		return 0;
+	}
+}
+
+u32 ecspi_fused(u32 base_addr)
+{
+	switch (base_addr) {
+	case ECSPI1_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI1);
+	case ECSPI2_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI2);
+	case ECSPI3_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI3);
+	case ECSPI4_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI4);
+#ifdef ECSPI5_BASE_ADDR
+	case ECSPI5_BASE_ADDR:
+		return check_module_fused(MODULE_ECSPI5);
+#endif
+	default:
+		return 0;
+	}
+}
+
+u32 usb_fused(u32 base_addr)
+{
+	int i = (base_addr - USB_BASE_ADDR) / 0x200;
+
+	return check_module_fused(MODULE_USB_OTG1 + i);
+}
+
+u32 qspi_fused(u32 base_addr)
+{
+	switch (base_addr) {
+#ifdef QSPI1_BASE_ADDR
+	case QSPI1_BASE_ADDR:
+		return check_module_fused(MODULE_QSPI1);
+#endif
+
+#ifdef QSPI2_BASE_ADDR
+	case QSPI2_BASE_ADDR:
+		return check_module_fused(MODULE_QSPI2);
+#endif
+	default:
+		return 0;
+	}
+}
+
+u32 i2c_fused(u32 base_addr)
+{
+	switch (base_addr) {
+	case I2C1_BASE_ADDR:
+		return check_module_fused(MODULE_I2C1);
+	case I2C2_BASE_ADDR:
+		return check_module_fused(MODULE_I2C2);
+	case I2C3_BASE_ADDR:
+		return check_module_fused(MODULE_I2C3);
+#ifdef I2C4_BASE_ADDR
+	case I2C4_BASE_ADDR:
+		return check_module_fused(MODULE_I2C4);
+#endif
+	}
+
+	return 0;
+}
+
+u32 enet_fused(u32 base_addr)
+{
+	switch (base_addr) {
+	case ENET_BASE_ADDR:
+		return check_module_fused(MODULE_ENET1);
+#ifdef ENET2_BASE_ADDR
+	case ENET2_BASE_ADDR:
+		return check_module_fused(MODULE_ENET2);
+#endif
+	default:
+		return 0;
+	}
+}