[2/2,v3] Add EV-iMX280-NANO-X-MB board

A simple prototyping board with one microSD port, one Ethernet port,
2 USB ports, I2C, SPI, GPIO, and UART interfaces.

Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Cc: Stefano Babic <sbabic@denx.de>
---
Changes for v3:
   - QA passed at https://github.com/u-boot/u-boot/pull/77

 MAINTAINERS                                  |   2 +
 arch/arm/dts/Makefile                        |   3 +
 arch/arm/dts/ev-imx280-nano-x-mb.dts         | 109 +++++++++++++++++++
 board/out4/o4-imx6ull-nano/Kconfig           |   7 ++
 board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c |  22 ++--
 configs/ev-imx280-nano-x-mb_defconfig        |  91 ++++++++++++++++
 6 files changed, 224 insertions(+), 10 deletions(-)
 create mode 100644 arch/arm/dts/ev-imx280-nano-x-mb.dts
 create mode 100644 configs/ev-imx280-nano-x-mb_defconfig

Hello guys,
Could you please review and merge these patches?

PR successfully passed CI:
https://github.com/u-boot/u-boot/pull/77

15.05.21 00:18, Oleh Kravchenko пише:
> A simple prototyping board with one microSD port, one Ethernet port,
> 2 USB ports, I2C, SPI, GPIO, and UART interfaces.
> 
> Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
> Cc: Stefano Babic <sbabic@denx.de>
> ---
> Changes for v3:
>    - QA passed at https://github.com/u-boot/u-boot/pull/77
> 
>  MAINTAINERS                                  |   2 +
>  arch/arm/dts/Makefile                        |   3 +
>  arch/arm/dts/ev-imx280-nano-x-mb.dts         | 109 +++++++++++++++++++
>  board/out4/o4-imx6ull-nano/Kconfig           |   7 ++
>  board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c |  22 ++--
>  configs/ev-imx280-nano-x-mb_defconfig        |  91 ++++++++++++++++
>  6 files changed, 224 insertions(+), 10 deletions(-)
>  create mode 100644 arch/arm/dts/ev-imx280-nano-x-mb.dts
>  create mode 100644 configs/ev-imx280-nano-x-mb_defconfig
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 1fd8027e84..b652898a10 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -920,9 +920,11 @@ OUT4-IMX6ULL-NANO BOARD
>  M:	Oleh Kravchenko <oleg@kaa.org.ua>
>  S:	Maintained
>  T:	git https://github.com/Oleh-Kravchenko/u-boot-out4.git
> +F:	arch/arm/dts/ev-imx280-nano-x-mb.dts
>  F:	arch/arm/dts/o4-imx-nano.dts
>  F:	arch/arm/dts/o4-imx6ull-nano.dtsi
>  F:	board/out4
> +F:	configs/ev-imx280-nano-x-mb_defconfig
>  F:	configs/o4-imx6ull-nano_defconfig
>  F:	include/configs/o4-imx6ull-nano.h
>  
> diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
> index e7094ae17d..f832831487 100644
> --- a/arch/arm/dts/Makefile
> +++ b/arch/arm/dts/Makefile
> @@ -812,6 +812,9 @@ dtb-$(CONFIG_ARCH_MX6) += \
>  dtb-$(CONFIG_O4_IMX_NANO) += \
>  	o4-imx-nano.dtb
>  
> +dtb-$(CONFIG_EV_IMX280_NANO_X_MB) += \
> +	ev-imx280-nano-x-mb.dtb
> +
>  dtb-$(CONFIG_MX7) += imx7d-sdb.dtb \
>  	imx7d-sdb-qspi.dtb \
>  	imx7-cm.dtb \
> diff --git a/arch/arm/dts/ev-imx280-nano-x-mb.dts b/arch/arm/dts/ev-imx280-nano-x-mb.dts
> new file mode 100644
> index 0000000000..7aec076af3
> --- /dev/null
> +++ b/arch/arm/dts/ev-imx280-nano-x-mb.dts
> @@ -0,0 +1,109 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +// Copyright (C) 2021 Oleh Kravchenko <oleg@kaa.org.ua>
> +
> +/dts-v1/;
> +
> +#include "o4-imx6ull-nano.dtsi"
> +
> +/ {
> +	model = "EV-iMX280-NANO-X-MB";
> +	compatible = "evodbg,ev-imx280-nano-x-mb",
> +		     "out4,o4-imx6ull-nano",
> +		     "fsl,imx6ull";
> +
> +	aliases {
> +		mmc1 = &usdhc1;
> +	};
> +
> +	chosen {
> +		stdout-path = &uart1;
> +	};
> +};
> +
> +&iomuxc {
> +	pinctrl_uart1: uart1grp {
> +		fsl,pins = <
> +			MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX	0x1b0b1
> +			MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX	0x1b0b1
> +		>;
> +	};
> +
> +	pinctrl_usdhc1: usdhc1grp {
> +		fsl,pins = <
> +			MX6UL_PAD_SD1_CLK__USDHC1_CLK		0x10069
> +			MX6UL_PAD_SD1_CMD__USDHC1_CMD		0x17059
> +			MX6UL_PAD_SD1_DATA0__USDHC1_DATA0	0x17059
> +			MX6UL_PAD_SD1_DATA1__USDHC1_DATA1	0x17059
> +			MX6UL_PAD_SD1_DATA2__USDHC1_DATA2	0x17059
> +			MX6UL_PAD_SD1_DATA3__USDHC1_DATA3	0x17059
> +			MX6UL_PAD_UART1_RTS_B__USDHC1_CD_B	0x03029
> +		>;
> +	};
> +
> +	pinctrl_mdio: mdiogrp {
> +		fsl,pins = <
> +			MX6UL_PAD_GPIO1_IO06__ENET1_MDIO	0x1b0b0
> +			MX6UL_PAD_GPIO1_IO07__ENET1_MDC		0x1b0b0
> +			MX6UL_PAD_SNVS_TAMPER1__GPIO5_IO01	0xb0b0 /* RST */
> +		>;
> +	};
> +
> +	pinctrl_usb_otg1_id: usbotg1idgrp {
> +		fsl,pins = <
> +			MX6UL_PAD_GPIO1_IO00__ANATOP_OTG1_ID	0x17059
> +		>;
> +	};
> +};
> +
> +&uart1 {
> +	pinctrl-0 = <&pinctrl_uart1>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
> +&usdhc1 {
> +	bus-width = <4>;
> +	no-1-8-v;
> +	pinctrl-0 = <&pinctrl_usdhc1>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +	wakeup-source;
> +};
> +
> +&fec1 {
> +	phy-handle = <&phy0>;
> +	phy-mode = "rmii";
> +	phy-reset-duration = <250>;
> +	phy-reset-post-delay = <100>;
> +	phy-reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
> +	pinctrl-0 = <&pinctrl_fec1 &pinctrl_mdio>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +
> +	mdio {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		phy0: ethernet-phy@0 {
> +			clocks = <&clks IMX6UL_CLK_ENET_REF>;
> +			clock-names = "rmii-ref";
> +			interrupt-parent = <&gpio5>;
> +			interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
> +			pinctrl-0 = <&pinctrl_phy0_irq>;
> +			pinctrl-names = "default";
> +			reg = <0>;
> +		};
> +	};
> +};
> +
> +&usbotg1 {
> +	dr_mode = "otg";
> +	pinctrl-0 = <&pinctrl_usb_otg1_id>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
> +&usbotg2 {
> +	dr_mode = "host";
> +	status = "okay";
> +};
> diff --git a/board/out4/o4-imx6ull-nano/Kconfig b/board/out4/o4-imx6ull-nano/Kconfig
> index c2497d521f..e2ab80b6d4 100644
> --- a/board/out4/o4-imx6ull-nano/Kconfig
> +++ b/board/out4/o4-imx6ull-nano/Kconfig
> @@ -45,6 +45,12 @@ config O4_IMX_NANO
>  	    A baseboard for EV-iMX280-NANO module:
>  	    https://out4.ru/products/board/18-o4-imx-nano.html
>  
> +config EV_IMX280_NANO_X_MB
> +	bool "EV-IMX280-NANO-X-MB"
> +	help
> +	    A simple baseboard for EV-iMX280-NANO module:
> +	    http://evodbg.net/products/mx28-eval-kits/14-ev-imx280-nano-x-mb.html
> +
>  endchoice
>  
>  config IMX_CONFIG
> @@ -53,5 +59,6 @@ config IMX_CONFIG
>  
>  config DEFAULT_DEVICE_TREE
>  	default "o4-imx-nano" if O4_IMX_NANO
> +	default "ev-imx280-nano-x-mb" if EV_IMX280_NANO_X_MB
>  
>  endif
> diff --git a/board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c b/board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c
> index fec1755c32..edb200e9e5 100644
> --- a/board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c
> +++ b/board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c
> @@ -39,16 +39,18 @@ static int setup_fec_clock(void)
>  		if (ret)
>  			return ret;
>  
> -		/*
> -		 * Use 50M anatop loopback REF_CLK2 for ENET2,
> -		 * clear gpr1[14], set gpr1[18].
> -		 */
> -		clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
> -				IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
> -
> -		ret = enable_fec_anatop_clock(1, ENET_50MHZ);
> -		if (ret)
> -			return ret;
> +		if (!IS_ENABLED(CONFIG_EV_IMX280_NANO_X_MB)) {
> +			/*
> +			 * Use 50M anatop loopback REF_CLK2 for ENET2,
> +			 * clear gpr1[14], set gpr1[18].
> +			 */
> +			clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
> +					IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
> +
> +			ret = enable_fec_anatop_clock(1, ENET_50MHZ);
> +			if (ret)
> +				return ret;
> +		}
>  
>  		enable_enet_clk(1);
>  	}
> diff --git a/configs/ev-imx280-nano-x-mb_defconfig b/configs/ev-imx280-nano-x-mb_defconfig
> new file mode 100644
> index 0000000000..b06aedef2a
> --- /dev/null
> +++ b/configs/ev-imx280-nano-x-mb_defconfig
> @@ -0,0 +1,91 @@
> +CONFIG_ARCH_MX6=y
> +CONFIG_ARM=y
> +CONFIG_DEFAULT_DEVICE_TREE="ev-imx280-nano-x-mb"
> +CONFIG_EV_IMX280_NANO_X_MB=y
> +CONFIG_HUSH_PARSER=y
> +CONFIG_IMX_MODULE_FUSE=y
> +CONFIG_MX6ULL=y
> +CONFIG_PINCTRL=y
> +CONFIG_PINCTRL_IMX6=y
> +CONFIG_SYS_TEXT_BASE=0x87800000
> +CONFIG_TARGET_O4_IMX6ULL_NANO=y
> +
> +CONFIG_K4B4G1646D_BCMA=y
> +# CONFIG_MT41K256M16HA_125E is not set
> +
> +# Device Tree
> +CONFIG_OF_CONTROL=y
> +CONFIG_OF_LIBFDT_OVERLAY=y
> +
> +# Environment
> +CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
> +CONFIG_ENV_IS_IN_FAT=y
> +CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
> +
> +# Clock driver for imx6ull is not implemented
> +# CONFIG_CLK_IMX6Q=y
> +
> +# Thermal
> +CONFIG_DM_THERMAL=y
> +CONFIG_IMX_THERMAL=y
> +
> +# Serial
> +CONFIG_DM_SERIAL=y
> +CONFIG_MXC_UART=y
> +
> +# eMMC support
> +CONFIG_CMD_MMC=y
> +CONFIG_DM_MMC=y
> +CONFIG_FSL_USDHC=y
> +CONFIG_SUPPORT_EMMC_BOOT=y
> +CONFIG_SUPPORT_EMMC_RPMB=y
> +
> +# GPIO support
> +CONFIG_CMD_GPIO=y
> +CONFIG_DM_GPIO=y
> +CONFIG_MXC_GPIO=y
> +
> +# USB support
> +CONFIG_CI_UDC=y
> +CONFIG_CMD_USB=y
> +CONFIG_CMD_USB_MASS_STORAGE=y
> +CONFIG_DM_USB=y
> +CONFIG_USB=y
> +CONFIG_USB_GADGET=y
> +CONFIG_USB_GADGET_DOWNLOAD=y
> +
> +# Fastboot support
> +CONFIG_CMD_FASTBOOT=y
> +CONFIG_FASTBOOT_BUF_ADDR=0x82000000
> +CONFIG_FASTBOOT_CMD_OEM_FORMAT=y
> +CONFIG_FASTBOOT_FLASH=y
> +CONFIG_FASTBOOT_FLASH_MMC_DEV=0
> +CONFIG_USB_FUNCTION_FASTBOOT=y
> +
> +# Ethernet support
> +CONFIG_CMD_DHCP=y
> +CONFIG_CMD_MDIO=y
> +CONFIG_CMD_MII=y
> +CONFIG_CMD_PING=y
> +CONFIG_DM_ETH=y
> +CONFIG_FEC_MXC=y
> +CONFIG_MII=y
> +CONFIG_NET_RANDOM_ETHADDR=y
> +CONFIG_PHYLIB=y
> +CONFIG_PHY_SMSC=y
> +
> +# Watchdog support is broken
> +# CONFIG_CMD_WDT=y
> +# CONFIG_IMX_WATCHDOG=y
> +# CONFIG_SYSRESET_WATCHDOG=y
> +# CONFIG_WATCHDOG_RESET_DISABLE=y
> +# CONFIG_WDT=y
> +
> +# misc
> +CONFIG_CMD_BOOTZ=y
> +CONFIG_CMD_EXT4=y
> +CONFIG_CMD_FAT=y
> +CONFIG_CMD_GPT=y
> +CONFIG_CMD_MEMINFO=y
> +CONFIG_CMD_MEMTEST=y
> +CONFIG_CMD_PART=y
>

> A simple prototyping board with one microSD port, one Ethernet port,
> 2 USB ports, I2C, SPI, GPIO, and UART interfaces.
> Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
> Cc: Stefano Babic <sbabic@denx.de>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic