[U-Boot,4/5,v2] mips: Add Gardena Smart-Gateway board support

Message ID 20180810074819.24962-4-sr@denx.de
State Superseded
Delegated to: Daniel Schwierzeck
Headers show
Series
  • [U-Boot,1/5,v2] mips: Add basic MediaTek MT7620/88 support
Related show

Commit Message

Stefan Roese Aug. 10, 2018, 7:48 a.m.
The Gardena Smart-Gateway boards have a MT7688 SoC with 128 MiB of RAM
and 8 MiB of flash (SPI NOR) and additional 128MiB SPI NAND storage.

This patch also includes 2 targets. One is the target that can be
programmed into the SPI NOR flash and a 2nd target "xxx-ram" is
added to support loading and booting via an already running U-Boot
version. This allows easy development and testing without the
need to flash the image each time.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
---
v2:
- No change

 .../mips/dts/gardena-smart-gateway-mt7688.dts | 54 +++++++++++++++
 arch/mips/mach-mt7620/Kconfig                 |  9 +++
 board/gardena/smart-gateway-mt7688/Kconfig    | 12 ++++
 .../gardena/smart-gateway-mt7688/MAINTAINERS  |  8 +++
 board/gardena/smart-gateway-mt7688/Makefile   |  3 +
 board/gardena/smart-gateway-mt7688/board.c    | 18 +++++
 ...gardena-smart-gateway-mt7688-ram_defconfig | 68 +++++++++++++++++++
 .../gardena-smart-gateway-mt7688_defconfig    | 67 ++++++++++++++++++
 .../configs/gardena-smart-gateway-mt7688.h    | 56 +++++++++++++++
 9 files changed, 295 insertions(+)
 create mode 100644 arch/mips/dts/gardena-smart-gateway-mt7688.dts
 create mode 100644 board/gardena/smart-gateway-mt7688/Kconfig
 create mode 100644 board/gardena/smart-gateway-mt7688/MAINTAINERS
 create mode 100644 board/gardena/smart-gateway-mt7688/Makefile
 create mode 100644 board/gardena/smart-gateway-mt7688/board.c
 create mode 100644 configs/gardena-smart-gateway-mt7688-ram_defconfig
 create mode 100644 configs/gardena-smart-gateway-mt7688_defconfig
 create mode 100644 include/configs/gardena-smart-gateway-mt7688.h

Comments

Daniel Schwierzeck Aug. 15, 2018, 2:36 p.m. | #1
On 10.08.2018 09:48, Stefan Roese wrote:
> The Gardena Smart-Gateway boards have a MT7688 SoC with 128 MiB of RAM
> and 8 MiB of flash (SPI NOR) and additional 128MiB SPI NAND storage.
> 
> This patch also includes 2 targets. One is the target that can be
> programmed into the SPI NOR flash and a 2nd target "xxx-ram" is
> added to support loading and booting via an already running U-Boot
> version. This allows easy development and testing without the
> need to flash the image each time.
> 
> Signed-off-by: Stefan Roese <sr@denx.de>
> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
> ---
> v2:
> - No change
> 
>  .../mips/dts/gardena-smart-gateway-mt7688.dts | 54 +++++++++++++++
>  arch/mips/mach-mt7620/Kconfig                 |  9 +++
>  board/gardena/smart-gateway-mt7688/Kconfig    | 12 ++++
>  .../gardena/smart-gateway-mt7688/MAINTAINERS  |  8 +++
>  board/gardena/smart-gateway-mt7688/Makefile   |  3 +
>  board/gardena/smart-gateway-mt7688/board.c    | 18 +++++
>  ...gardena-smart-gateway-mt7688-ram_defconfig | 68 +++++++++++++++++++
>  .../gardena-smart-gateway-mt7688_defconfig    | 67 ++++++++++++++++++
>  .../configs/gardena-smart-gateway-mt7688.h    | 56 +++++++++++++++
>  9 files changed, 295 insertions(+)
>  create mode 100644 arch/mips/dts/gardena-smart-gateway-mt7688.dts
>  create mode 100644 board/gardena/smart-gateway-mt7688/Kconfig
>  create mode 100644 board/gardena/smart-gateway-mt7688/MAINTAINERS
>  create mode 100644 board/gardena/smart-gateway-mt7688/Makefile
>  create mode 100644 board/gardena/smart-gateway-mt7688/board.c
>  create mode 100644 configs/gardena-smart-gateway-mt7688-ram_defconfig
>  create mode 100644 configs/gardena-smart-gateway-mt7688_defconfig
>  create mode 100644 include/configs/gardena-smart-gateway-mt7688.h
> 
> diff --git a/arch/mips/dts/gardena-smart-gateway-mt7688.dts b/arch/mips/dts/gardena-smart-gateway-mt7688.dts
> new file mode 100644
> index 0000000000..6b2600a446
> --- /dev/null
> +++ b/arch/mips/dts/gardena-smart-gateway-mt7688.dts
> @@ -0,0 +1,54 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2018 Stefan Roese <sr@denx.de>
> + */
> +
> +/dts-v1/;
> +
> +#include "mt7628a.dtsi"
> +
> +/ {
> +	compatible = "gardena,smart-gateway-mt7688", "ralink,mt7628a-soc";
> +	model = "Gardena smart-Gateway-MT7688";
> +
> +	aliases {
> +		serial0 = &uart0;
> +		spi0 = &spi0;
> +	};
> +
> +	memory@0 {
> +		device_type = "memory";
> +		reg = <0x0 0x08000000>;
> +	};
> +
> +	chosen {
> +		bootargs = "console=ttyS0,57600";
> +		stdout-path = &uart0;
> +	};
> +};
> +
> +&uart0 {
> +	status = "okay";
> +	clock-frequency = <40000000>;
> +};
> +
> +&spi0 {
> +	status = "okay";
> +	num-cs = <2>;
> +
> +	spi-flash@0 {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "spi-flash", "jedec,spi-nor";
> +		spi-max-frequency = <25000000>;
> +		reg = <0>;
> +	};
> +
> +	spi-nand@1 {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		compatible = "spi-nand";
> +		spi-max-frequency = <25000000>;
> +		reg = <1>;
> +	};
> +};
> diff --git a/arch/mips/mach-mt7620/Kconfig b/arch/mips/mach-mt7620/Kconfig
> index ef1211d172..13a7bd2cc0 100644
> --- a/arch/mips/mach-mt7620/Kconfig
> +++ b/arch/mips/mach-mt7620/Kconfig
> @@ -21,6 +21,14 @@ endchoice
>  choice
>  	prompt "Board select"
>  
> +config BOARD_GARDENA_SMART_GATEWAY_MT7688
> +	bool "Gardena Smart Gateway"
> +	depends on SOC_MT7620
> +	select SUPPORTS_BOOT_RAM
> +	help
> +	  Gardena Smart Gateway boards have a MT7688 SoC with 128 MiB of RAM
> +	  and 8 MiB of flash (SPI NOR) and additional SPI NAND storage.
> +
>  config BOARD_LINKIT_SMART_7688
>  	bool "LinkIt Smart 7688"
>  	depends on SOC_MT7620
> @@ -121,6 +129,7 @@ endchoice
>  config SUPPORTS_BOOT_RAM
>  	bool
>  
> +source "board/gardena/smart-gateway-mt7688/Kconfig"
>  source "board/seeed/linkit-smart-7688/Kconfig"
>  
>  endmenu
> diff --git a/board/gardena/smart-gateway-mt7688/Kconfig b/board/gardena/smart-gateway-mt7688/Kconfig
> new file mode 100644
> index 0000000000..3653f8aadb
> --- /dev/null
> +++ b/board/gardena/smart-gateway-mt7688/Kconfig
> @@ -0,0 +1,12 @@
> +if BOARD_GARDENA_SMART_GATEWAY_MT7688
> +
> +config SYS_BOARD
> +	default "smart-gateway-mt7688"
> +
> +config SYS_VENDOR
> +	default "gardena"
> +
> +config SYS_CONFIG_NAME
> +	default "gardena-smart-gateway-mt7688"
> +
> +endif
> diff --git a/board/gardena/smart-gateway-mt7688/MAINTAINERS b/board/gardena/smart-gateway-mt7688/MAINTAINERS
> new file mode 100644
> index 0000000000..bbb491c1ce
> --- /dev/null
> +++ b/board/gardena/smart-gateway-mt7688/MAINTAINERS
> @@ -0,0 +1,8 @@
> +GARDENA_SMART_GATEWAY_MT7688 BOARD
> +M:	Stefan Roese <sr@denx.de>
> +S:	Maintained
> +F:	board/gardena/smart-gateway-mt7688
> +F:	include/configs/gardena-smart-gateway-mt7688.h
> +F:	configs/gardena-smart-gateway-mt7688_defconfig
> +F:	configs/gardena-smart-gateway-mt7688-ram_defconfig
> +F:	arch/mips/dts/gardena-smart-gateway-mt7688.dts
> diff --git a/board/gardena/smart-gateway-mt7688/Makefile b/board/gardena/smart-gateway-mt7688/Makefile
> new file mode 100644
> index 0000000000..70cd7a8e56
> --- /dev/null
> +++ b/board/gardena/smart-gateway-mt7688/Makefile
> @@ -0,0 +1,3 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +
> +obj-y += board.o
> diff --git a/board/gardena/smart-gateway-mt7688/board.c b/board/gardena/smart-gateway-mt7688/board.c
> new file mode 100644
> index 0000000000..a62dc654f2
> --- /dev/null
> +++ b/board/gardena/smart-gateway-mt7688/board.c
> @@ -0,0 +1,18 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (C) 2018 Stefan Roese <sr@denx.de>
> + */
> +
> +#include <common.h>
> +#include <asm/io.h>
> +
> +void board_debug_uart_init(void)
> +{
> +	/* Nothing to be done here for this board (no UART setup etc) */
> +}
> +
> +int board_early_init_f(void)
> +{
> +	/* Nothing to be done here for this board (no UART setup etc) */
> +	return 0;
> +}

do you plan to implement something? Otherwise you could drop those
functions and if you don't enable CONFIG_BOARD_EARLY_INIT_F and
CONFIG_DEBUG_UART_BOARD_INIT.

> diff --git a/configs/gardena-smart-gateway-mt7688-ram_defconfig b/configs/gardena-smart-gateway-mt7688-ram_defconfig
> new file mode 100644
> index 0000000000..3220db6677
> --- /dev/null
> +++ b/configs/gardena-smart-gateway-mt7688-ram_defconfig
> @@ -0,0 +1,68 @@
> +CONFIG_MIPS=y
> +CONFIG_SYS_TEXT_BASE=0x80010000
> +CONFIG_DEBUG_UART_BOARD_INIT=y
> +CONFIG_DEBUG_UART_BASE=0x10000c00
> +CONFIG_DEBUG_UART_CLOCK=40000000
> +CONFIG_ARCH_MT7620=y
> +# CONFIG_MIPS_BOOT_CMDLINE_LEGACY is not set
> +# CONFIG_MIPS_BOOT_ENV_LEGACY is not set
> +CONFIG_MIPS_BOOT_FDT=y
> +CONFIG_DEFAULT_DEVICE_TREE="gardena-smart-gateway-mt7688"
> +CONFIG_DEBUG_UART=y
> +# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
> +CONFIG_OF_STDOUT_VIA_ALIAS=y
> +CONFIG_SYS_CONSOLE_INFO_QUIET=y
> +CONFIG_BOARD_EARLY_INIT_F=y
> +CONFIG_HUSH_PARSER=y
> +CONFIG_CMD_CPU=y
> +CONFIG_CMD_LICENSE=y
> +# CONFIG_CMD_BOOTD is not set
> +# CONFIG_CMD_ELF is not set
> +# CONFIG_CMD_XIMG is not set
> +CONFIG_CMD_MEMINFO=y
> +# CONFIG_CMD_FLASH is not set
> +# CONFIG_CMD_LOADS is not set
> +CONFIG_CMD_MTD=y
> +CONFIG_CMD_SF=y
> +CONFIG_CMD_SPI=y
> +CONFIG_CMD_MII=y
> +CONFIG_CMD_PING=y
> +CONFIG_CMD_TIME=y
> +CONFIG_MTDIDS_DEFAULT="spi-nand0=spi-nand0"
> +CONFIG_MTDPARTS_DEFAULT="mtdparts=spi-nand0:-(ubi)"
> +CONFIG_CMD_UBI=y
> +CONFIG_OF_EMBED=y
> +CONFIG_ENV_IS_IN_SPI_FLASH=y
> +# CONFIG_DM_DEVICE_REMOVE is not set
> +CONFIG_HAVE_BLOCK_DEVICE=y
> +CONFIG_CLK=y
> +CONFIG_CPU=y
> +CONFIG_DM_GPIO=y
> +CONFIG_LED=y
> +CONFIG_LED_BLINK=y
> +CONFIG_LED_GPIO=y
> +CONFIG_MTD=y
> +CONFIG_MTD_SPI_NAND=y
> +CONFIG_SPI_FLASH=y
> +CONFIG_SPI_FLASH_GIGADEVICE=y
> +CONFIG_SPI_FLASH_MACRONIX=y
> +CONFIG_SPI_FLASH_SPANSION=y
> +CONFIG_SPI_FLASH_STMICRO=y
> +CONFIG_SPI_FLASH_WINBOND=y
> +CONFIG_SPI_FLASH_XMC=y
> +CONFIG_SPI_FLASH_MTD=y
> +CONFIG_PHYLIB=y
> +CONFIG_PHY_FIXED=y
> +CONFIG_MT76XX_ETH=y
> +CONFIG_PHY=y
> +CONFIG_POWER_DOMAIN=y
> +CONFIG_RAM=y
> +CONFIG_DM_RESET=y
> +CONFIG_BAUDRATE=57600
> +# CONFIG_SPL_SERIAL_PRESENT is not set
> +CONFIG_DEBUG_UART_SHIFT=2
> +CONFIG_DEBUG_UART_ANNOUNCE=y
> +CONFIG_SYS_NS16550=y
> +CONFIG_SPI=y
> +CONFIG_MT76XX_SPI=y
> +CONFIG_SYSRESET_SYSCON=y
> diff --git a/configs/gardena-smart-gateway-mt7688_defconfig b/configs/gardena-smart-gateway-mt7688_defconfig
> new file mode 100644
> index 0000000000..8e9e6e895e
> --- /dev/null
> +++ b/configs/gardena-smart-gateway-mt7688_defconfig
> @@ -0,0 +1,67 @@
> +CONFIG_MIPS=y
> +CONFIG_SYS_TEXT_BASE=0xbc000000
> +CONFIG_DEBUG_UART_BOARD_INIT=y
> +CONFIG_DEBUG_UART_BASE=0x10000c00
> +CONFIG_DEBUG_UART_CLOCK=40000000
> +CONFIG_ARCH_MT7620=y
> +CONFIG_BOOT_ROM=y
> +CONFIG_ONBOARD_DDR2_SIZE_1024MBIT=y
> +CONFIG_ONBOARD_DDR2_CHIP_WIDTH_16BIT=y
> +# CONFIG_MIPS_BOOT_CMDLINE_LEGACY is not set
> +# CONFIG_MIPS_BOOT_ENV_LEGACY is not set
> +CONFIG_MIPS_BOOT_FDT=y
> +CONFIG_DEFAULT_DEVICE_TREE="gardena-smart-gateway-mt7688"
> +CONFIG_DEBUG_UART=y
> +# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
> +CONFIG_OF_STDOUT_VIA_ALIAS=y
> +CONFIG_SYS_CONSOLE_INFO_QUIET=y
> +CONFIG_BOARD_EARLY_INIT_F=y
> +CONFIG_HUSH_PARSER=y
> +CONFIG_CMD_CPU=y
> +CONFIG_CMD_LICENSE=y
> +# CONFIG_CMD_BOOTD is not set
> +# CONFIG_CMD_ELF is not set
> +# CONFIG_CMD_XIMG is not set
> +CONFIG_CMD_MEMINFO=y
> +# CONFIG_CMD_FLASH is not set
> +# CONFIG_CMD_LOADS is not set
> +CONFIG_CMD_MTD=y
> +CONFIG_CMD_SF=y
> +CONFIG_CMD_SPI=y
> +# CONFIG_CMD_NET is not set
> +CONFIG_CMD_TIME=y
> +CONFIG_MTDIDS_DEFAULT="spi-nand0=spi-nand0"
> +CONFIG_MTDPARTS_DEFAULT="mtdparts=spi-nand0:-(ubi)"
> +CONFIG_CMD_UBI=y
> +CONFIG_OF_EMBED=y
> +CONFIG_ENV_IS_IN_SPI_FLASH=y
> +# CONFIG_DM_DEVICE_REMOVE is not set
> +CONFIG_HAVE_BLOCK_DEVICE=y
> +CONFIG_CLK=y
> +CONFIG_CPU=y
> +CONFIG_DM_GPIO=y
> +CONFIG_LED=y
> +CONFIG_LED_BLINK=y
> +CONFIG_LED_GPIO=y
> +CONFIG_MTD=y
> +CONFIG_MTD_SPI_NAND=y
> +CONFIG_SPI_FLASH=y
> +CONFIG_SPI_FLASH_GIGADEVICE=y
> +CONFIG_SPI_FLASH_MACRONIX=y
> +CONFIG_SPI_FLASH_SPANSION=y
> +CONFIG_SPI_FLASH_STMICRO=y
> +CONFIG_SPI_FLASH_WINBOND=y
> +CONFIG_SPI_FLASH_XMC=y
> +CONFIG_SPI_FLASH_MTD=y
> +CONFIG_PHY=y
> +CONFIG_POWER_DOMAIN=y
> +CONFIG_RAM=y
> +CONFIG_DM_RESET=y
> +CONFIG_BAUDRATE=57600
> +# CONFIG_SPL_SERIAL_PRESENT is not set
> +CONFIG_DEBUG_UART_SHIFT=2
> +CONFIG_DEBUG_UART_ANNOUNCE=y
> +CONFIG_SYS_NS16550=y
> +CONFIG_SPI=y
> +CONFIG_MT76XX_SPI=y
> +CONFIG_SYSRESET_SYSCON=y
> diff --git a/include/configs/gardena-smart-gateway-mt7688.h b/include/configs/gardena-smart-gateway-mt7688.h
> new file mode 100644
> index 0000000000..5ec9c6a041
> --- /dev/null
> +++ b/include/configs/gardena-smart-gateway-mt7688.h
> @@ -0,0 +1,56 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Copyright (C) 2018 Stefan Roese <sr@denx.de>
> + */
> +
> +#ifndef __CONFIG_GARDENA_SMART_GATEWAY_H
> +#define __CONFIG_GARDENA_SMART_GATEWAY_H
> +
> +/* CPU */
> +#define CONFIG_SYS_MIPS_TIMER_FREQ	200000000
> +
> +/* RAM */
> +#define CONFIG_NR_DRAM_BANKS		1
> +#define CONFIG_SYS_SDRAM_BASE		0x80000000
> +
> +#define CONFIG_SYS_LOAD_ADDR		CONFIG_SYS_SDRAM_BASE + 0x100000
> +
> +#define CONFIG_SYS_INIT_SP_OFFSET	0x400000
> +
> +#ifdef CONFIG_BOOT_RAM
> +#define CONFIG_SKIP_LOWLEVEL_INIT
> +#endif
> +
> +/* UART */
> +#define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200, \
> +					  230400, 500000, 1500000 }
> +
> +/* RAM */
> +#define CONFIG_SYS_MEMTEST_START	0x80100000
> +#define CONFIG_SYS_MEMTEST_END		0x80400000
> +
> +/* Memory usage */
> +#define CONFIG_SYS_MAXARGS		64
> +#define CONFIG_SYS_MALLOC_LEN		(1024 * 1024)
> +#define CONFIG_SYS_BOOTPARAMS_LEN	(128 * 1024)
> +#define CONFIG_SYS_CBSIZE		512
> +
> +/* U-Boot */
> +#define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
> +
> +/* Environment settings */
> +#define CONFIG_ENV_OFFSET		0x80000
> +#define CONFIG_ENV_SIZE			(64 << 10)
> +#define CONFIG_ENV_SECT_SIZE		(64 << 10)
> +#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
> +#define CONFIG_ENV_OFFSET_REDUND	(CONFIG_ENV_OFFSET + \
> +						CONFIG_ENV_SECT_SIZE)
> +#define CONFIG_ENV_SIZE_REDUND		CONFIG_ENV_SIZE
> +
> +/*
> + * Environment is right behind U-Boot in flash. Make sure U-Boot
> + * doesn't grow into the environment area.
> + */
> +#define CONFIG_BOARD_SIZE_LIMIT		CONFIG_ENV_OFFSET
> +
> +#endif /* __CONFIG_GARDENA_SMART_GATEWAY_H */
>
Stefan Roese Aug. 15, 2018, 2:39 p.m. | #2
On 15.08.2018 16:36, Daniel Schwierzeck wrote:
> 
> 
> On 10.08.2018 09:48, Stefan Roese wrote:
>> The Gardena Smart-Gateway boards have a MT7688 SoC with 128 MiB of RAM
>> and 8 MiB of flash (SPI NOR) and additional 128MiB SPI NAND storage.
>>
>> This patch also includes 2 targets. One is the target that can be
>> programmed into the SPI NOR flash and a 2nd target "xxx-ram" is
>> added to support loading and booting via an already running U-Boot
>> version. This allows easy development and testing without the
>> need to flash the image each time.
>>
>> Signed-off-by: Stefan Roese <sr@denx.de>
>> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
>> ---
>> v2:
>> - No change
>>
>>   .../mips/dts/gardena-smart-gateway-mt7688.dts | 54 +++++++++++++++
>>   arch/mips/mach-mt7620/Kconfig                 |  9 +++
>>   board/gardena/smart-gateway-mt7688/Kconfig    | 12 ++++
>>   .../gardena/smart-gateway-mt7688/MAINTAINERS  |  8 +++
>>   board/gardena/smart-gateway-mt7688/Makefile   |  3 +
>>   board/gardena/smart-gateway-mt7688/board.c    | 18 +++++
>>   ...gardena-smart-gateway-mt7688-ram_defconfig | 68 +++++++++++++++++++
>>   .../gardena-smart-gateway-mt7688_defconfig    | 67 ++++++++++++++++++
>>   .../configs/gardena-smart-gateway-mt7688.h    | 56 +++++++++++++++
>>   9 files changed, 295 insertions(+)
>>   create mode 100644 arch/mips/dts/gardena-smart-gateway-mt7688.dts
>>   create mode 100644 board/gardena/smart-gateway-mt7688/Kconfig
>>   create mode 100644 board/gardena/smart-gateway-mt7688/MAINTAINERS
>>   create mode 100644 board/gardena/smart-gateway-mt7688/Makefile
>>   create mode 100644 board/gardena/smart-gateway-mt7688/board.c
>>   create mode 100644 configs/gardena-smart-gateway-mt7688-ram_defconfig
>>   create mode 100644 configs/gardena-smart-gateway-mt7688_defconfig
>>   create mode 100644 include/configs/gardena-smart-gateway-mt7688.h
>>
>> diff --git a/arch/mips/dts/gardena-smart-gateway-mt7688.dts b/arch/mips/dts/gardena-smart-gateway-mt7688.dts
>> new file mode 100644
>> index 0000000000..6b2600a446
>> --- /dev/null
>> +++ b/arch/mips/dts/gardena-smart-gateway-mt7688.dts
>> @@ -0,0 +1,54 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Copyright (C) 2018 Stefan Roese <sr@denx.de>
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "mt7628a.dtsi"
>> +
>> +/ {
>> +	compatible = "gardena,smart-gateway-mt7688", "ralink,mt7628a-soc";
>> +	model = "Gardena smart-Gateway-MT7688";
>> +
>> +	aliases {
>> +		serial0 = &uart0;
>> +		spi0 = &spi0;
>> +	};
>> +
>> +	memory@0 {
>> +		device_type = "memory";
>> +		reg = <0x0 0x08000000>;
>> +	};
>> +
>> +	chosen {
>> +		bootargs = "console=ttyS0,57600";
>> +		stdout-path = &uart0;
>> +	};
>> +};
>> +
>> +&uart0 {
>> +	status = "okay";
>> +	clock-frequency = <40000000>;
>> +};
>> +
>> +&spi0 {
>> +	status = "okay";
>> +	num-cs = <2>;
>> +
>> +	spi-flash@0 {
>> +		#address-cells = <1>;
>> +		#size-cells = <1>;
>> +		compatible = "spi-flash", "jedec,spi-nor";
>> +		spi-max-frequency = <25000000>;
>> +		reg = <0>;
>> +	};
>> +
>> +	spi-nand@1 {
>> +		#address-cells = <1>;
>> +		#size-cells = <1>;
>> +		compatible = "spi-nand";
>> +		spi-max-frequency = <25000000>;
>> +		reg = <1>;
>> +	};
>> +};
>> diff --git a/arch/mips/mach-mt7620/Kconfig b/arch/mips/mach-mt7620/Kconfig
>> index ef1211d172..13a7bd2cc0 100644
>> --- a/arch/mips/mach-mt7620/Kconfig
>> +++ b/arch/mips/mach-mt7620/Kconfig
>> @@ -21,6 +21,14 @@ endchoice
>>   choice
>>   	prompt "Board select"
>>   
>> +config BOARD_GARDENA_SMART_GATEWAY_MT7688
>> +	bool "Gardena Smart Gateway"
>> +	depends on SOC_MT7620
>> +	select SUPPORTS_BOOT_RAM
>> +	help
>> +	  Gardena Smart Gateway boards have a MT7688 SoC with 128 MiB of RAM
>> +	  and 8 MiB of flash (SPI NOR) and additional SPI NAND storage.
>> +
>>   config BOARD_LINKIT_SMART_7688
>>   	bool "LinkIt Smart 7688"
>>   	depends on SOC_MT7620
>> @@ -121,6 +129,7 @@ endchoice
>>   config SUPPORTS_BOOT_RAM
>>   	bool
>>   
>> +source "board/gardena/smart-gateway-mt7688/Kconfig"
>>   source "board/seeed/linkit-smart-7688/Kconfig"
>>   
>>   endmenu
>> diff --git a/board/gardena/smart-gateway-mt7688/Kconfig b/board/gardena/smart-gateway-mt7688/Kconfig
>> new file mode 100644
>> index 0000000000..3653f8aadb
>> --- /dev/null
>> +++ b/board/gardena/smart-gateway-mt7688/Kconfig
>> @@ -0,0 +1,12 @@
>> +if BOARD_GARDENA_SMART_GATEWAY_MT7688
>> +
>> +config SYS_BOARD
>> +	default "smart-gateway-mt7688"
>> +
>> +config SYS_VENDOR
>> +	default "gardena"
>> +
>> +config SYS_CONFIG_NAME
>> +	default "gardena-smart-gateway-mt7688"
>> +
>> +endif
>> diff --git a/board/gardena/smart-gateway-mt7688/MAINTAINERS b/board/gardena/smart-gateway-mt7688/MAINTAINERS
>> new file mode 100644
>> index 0000000000..bbb491c1ce
>> --- /dev/null
>> +++ b/board/gardena/smart-gateway-mt7688/MAINTAINERS
>> @@ -0,0 +1,8 @@
>> +GARDENA_SMART_GATEWAY_MT7688 BOARD
>> +M:	Stefan Roese <sr@denx.de>
>> +S:	Maintained
>> +F:	board/gardena/smart-gateway-mt7688
>> +F:	include/configs/gardena-smart-gateway-mt7688.h
>> +F:	configs/gardena-smart-gateway-mt7688_defconfig
>> +F:	configs/gardena-smart-gateway-mt7688-ram_defconfig
>> +F:	arch/mips/dts/gardena-smart-gateway-mt7688.dts
>> diff --git a/board/gardena/smart-gateway-mt7688/Makefile b/board/gardena/smart-gateway-mt7688/Makefile
>> new file mode 100644
>> index 0000000000..70cd7a8e56
>> --- /dev/null
>> +++ b/board/gardena/smart-gateway-mt7688/Makefile
>> @@ -0,0 +1,3 @@
>> +# SPDX-License-Identifier: GPL-2.0+
>> +
>> +obj-y += board.o
>> diff --git a/board/gardena/smart-gateway-mt7688/board.c b/board/gardena/smart-gateway-mt7688/board.c
>> new file mode 100644
>> index 0000000000..a62dc654f2
>> --- /dev/null
>> +++ b/board/gardena/smart-gateway-mt7688/board.c
>> @@ -0,0 +1,18 @@
>> +// SPDX-License-Identifier: GPL-2.0+
>> +/*
>> + * Copyright (C) 2018 Stefan Roese <sr@denx.de>
>> + */
>> +
>> +#include <common.h>
>> +#include <asm/io.h>
>> +
>> +void board_debug_uart_init(void)
>> +{
>> +	/* Nothing to be done here for this board (no UART setup etc) */
>> +}
>> +
>> +int board_early_init_f(void)
>> +{
>> +	/* Nothing to be done here for this board (no UART setup etc) */
>> +	return 0;
>> +}
> 
> do you plan to implement something? Otherwise you could drop those
> functions and if you don't enable CONFIG_BOARD_EARLY_INIT_F and
> CONFIG_DEBUG_UART_BOARD_INIT.

I'm currently working on some other MUX setup (etc) here for this
board. So its very likely that something will be added. But you
are right, DEBUG_UART_BOARD_INIT can very likely be dropped.

Thanks,
Stefan

Patch

diff --git a/arch/mips/dts/gardena-smart-gateway-mt7688.dts b/arch/mips/dts/gardena-smart-gateway-mt7688.dts
new file mode 100644
index 0000000000..6b2600a446
--- /dev/null
+++ b/arch/mips/dts/gardena-smart-gateway-mt7688.dts
@@ -0,0 +1,54 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 Stefan Roese <sr@denx.de>
+ */
+
+/dts-v1/;
+
+#include "mt7628a.dtsi"
+
+/ {
+	compatible = "gardena,smart-gateway-mt7688", "ralink,mt7628a-soc";
+	model = "Gardena smart-Gateway-MT7688";
+
+	aliases {
+		serial0 = &uart0;
+		spi0 = &spi0;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x08000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,57600";
+		stdout-path = &uart0;
+	};
+};
+
+&uart0 {
+	status = "okay";
+	clock-frequency = <40000000>;
+};
+
+&spi0 {
+	status = "okay";
+	num-cs = <2>;
+
+	spi-flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-flash", "jedec,spi-nor";
+		spi-max-frequency = <25000000>;
+		reg = <0>;
+	};
+
+	spi-nand@1 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-nand";
+		spi-max-frequency = <25000000>;
+		reg = <1>;
+	};
+};
diff --git a/arch/mips/mach-mt7620/Kconfig b/arch/mips/mach-mt7620/Kconfig
index ef1211d172..13a7bd2cc0 100644
--- a/arch/mips/mach-mt7620/Kconfig
+++ b/arch/mips/mach-mt7620/Kconfig
@@ -21,6 +21,14 @@  endchoice
 choice
 	prompt "Board select"
 
+config BOARD_GARDENA_SMART_GATEWAY_MT7688
+	bool "Gardena Smart Gateway"
+	depends on SOC_MT7620
+	select SUPPORTS_BOOT_RAM
+	help
+	  Gardena Smart Gateway boards have a MT7688 SoC with 128 MiB of RAM
+	  and 8 MiB of flash (SPI NOR) and additional SPI NAND storage.
+
 config BOARD_LINKIT_SMART_7688
 	bool "LinkIt Smart 7688"
 	depends on SOC_MT7620
@@ -121,6 +129,7 @@  endchoice
 config SUPPORTS_BOOT_RAM
 	bool
 
+source "board/gardena/smart-gateway-mt7688/Kconfig"
 source "board/seeed/linkit-smart-7688/Kconfig"
 
 endmenu
diff --git a/board/gardena/smart-gateway-mt7688/Kconfig b/board/gardena/smart-gateway-mt7688/Kconfig
new file mode 100644
index 0000000000..3653f8aadb
--- /dev/null
+++ b/board/gardena/smart-gateway-mt7688/Kconfig
@@ -0,0 +1,12 @@ 
+if BOARD_GARDENA_SMART_GATEWAY_MT7688
+
+config SYS_BOARD
+	default "smart-gateway-mt7688"
+
+config SYS_VENDOR
+	default "gardena"
+
+config SYS_CONFIG_NAME
+	default "gardena-smart-gateway-mt7688"
+
+endif
diff --git a/board/gardena/smart-gateway-mt7688/MAINTAINERS b/board/gardena/smart-gateway-mt7688/MAINTAINERS
new file mode 100644
index 0000000000..bbb491c1ce
--- /dev/null
+++ b/board/gardena/smart-gateway-mt7688/MAINTAINERS
@@ -0,0 +1,8 @@ 
+GARDENA_SMART_GATEWAY_MT7688 BOARD
+M:	Stefan Roese <sr@denx.de>
+S:	Maintained
+F:	board/gardena/smart-gateway-mt7688
+F:	include/configs/gardena-smart-gateway-mt7688.h
+F:	configs/gardena-smart-gateway-mt7688_defconfig
+F:	configs/gardena-smart-gateway-mt7688-ram_defconfig
+F:	arch/mips/dts/gardena-smart-gateway-mt7688.dts
diff --git a/board/gardena/smart-gateway-mt7688/Makefile b/board/gardena/smart-gateway-mt7688/Makefile
new file mode 100644
index 0000000000..70cd7a8e56
--- /dev/null
+++ b/board/gardena/smart-gateway-mt7688/Makefile
@@ -0,0 +1,3 @@ 
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-y += board.o
diff --git a/board/gardena/smart-gateway-mt7688/board.c b/board/gardena/smart-gateway-mt7688/board.c
new file mode 100644
index 0000000000..a62dc654f2
--- /dev/null
+++ b/board/gardena/smart-gateway-mt7688/board.c
@@ -0,0 +1,18 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Stefan Roese <sr@denx.de>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+
+void board_debug_uart_init(void)
+{
+	/* Nothing to be done here for this board (no UART setup etc) */
+}
+
+int board_early_init_f(void)
+{
+	/* Nothing to be done here for this board (no UART setup etc) */
+	return 0;
+}
diff --git a/configs/gardena-smart-gateway-mt7688-ram_defconfig b/configs/gardena-smart-gateway-mt7688-ram_defconfig
new file mode 100644
index 0000000000..3220db6677
--- /dev/null
+++ b/configs/gardena-smart-gateway-mt7688-ram_defconfig
@@ -0,0 +1,68 @@ 
+CONFIG_MIPS=y
+CONFIG_SYS_TEXT_BASE=0x80010000
+CONFIG_DEBUG_UART_BOARD_INIT=y
+CONFIG_DEBUG_UART_BASE=0x10000c00
+CONFIG_DEBUG_UART_CLOCK=40000000
+CONFIG_ARCH_MT7620=y
+# CONFIG_MIPS_BOOT_CMDLINE_LEGACY is not set
+# CONFIG_MIPS_BOOT_ENV_LEGACY is not set
+CONFIG_MIPS_BOOT_FDT=y
+CONFIG_DEFAULT_DEVICE_TREE="gardena-smart-gateway-mt7688"
+CONFIG_DEBUG_UART=y
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_CPU=y
+CONFIG_CMD_LICENSE=y
+# CONFIG_CMD_BOOTD is not set
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_XIMG is not set
+CONFIG_CMD_MEMINFO=y
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MTD=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_TIME=y
+CONFIG_MTDIDS_DEFAULT="spi-nand0=spi-nand0"
+CONFIG_MTDPARTS_DEFAULT="mtdparts=spi-nand0:-(ubi)"
+CONFIG_CMD_UBI=y
+CONFIG_OF_EMBED=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+# CONFIG_DM_DEVICE_REMOVE is not set
+CONFIG_HAVE_BLOCK_DEVICE=y
+CONFIG_CLK=y
+CONFIG_CPU=y
+CONFIG_DM_GPIO=y
+CONFIG_LED=y
+CONFIG_LED_BLINK=y
+CONFIG_LED_GPIO=y
+CONFIG_MTD=y
+CONFIG_MTD_SPI_NAND=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_XMC=y
+CONFIG_SPI_FLASH_MTD=y
+CONFIG_PHYLIB=y
+CONFIG_PHY_FIXED=y
+CONFIG_MT76XX_ETH=y
+CONFIG_PHY=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_RAM=y
+CONFIG_DM_RESET=y
+CONFIG_BAUDRATE=57600
+# CONFIG_SPL_SERIAL_PRESENT is not set
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_DEBUG_UART_ANNOUNCE=y
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_MT76XX_SPI=y
+CONFIG_SYSRESET_SYSCON=y
diff --git a/configs/gardena-smart-gateway-mt7688_defconfig b/configs/gardena-smart-gateway-mt7688_defconfig
new file mode 100644
index 0000000000..8e9e6e895e
--- /dev/null
+++ b/configs/gardena-smart-gateway-mt7688_defconfig
@@ -0,0 +1,67 @@ 
+CONFIG_MIPS=y
+CONFIG_SYS_TEXT_BASE=0xbc000000
+CONFIG_DEBUG_UART_BOARD_INIT=y
+CONFIG_DEBUG_UART_BASE=0x10000c00
+CONFIG_DEBUG_UART_CLOCK=40000000
+CONFIG_ARCH_MT7620=y
+CONFIG_BOOT_ROM=y
+CONFIG_ONBOARD_DDR2_SIZE_1024MBIT=y
+CONFIG_ONBOARD_DDR2_CHIP_WIDTH_16BIT=y
+# CONFIG_MIPS_BOOT_CMDLINE_LEGACY is not set
+# CONFIG_MIPS_BOOT_ENV_LEGACY is not set
+CONFIG_MIPS_BOOT_FDT=y
+CONFIG_DEFAULT_DEVICE_TREE="gardena-smart-gateway-mt7688"
+CONFIG_DEBUG_UART=y
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_CPU=y
+CONFIG_CMD_LICENSE=y
+# CONFIG_CMD_BOOTD is not set
+# CONFIG_CMD_ELF is not set
+# CONFIG_CMD_XIMG is not set
+CONFIG_CMD_MEMINFO=y
+# CONFIG_CMD_FLASH is not set
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MTD=y
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+# CONFIG_CMD_NET is not set
+CONFIG_CMD_TIME=y
+CONFIG_MTDIDS_DEFAULT="spi-nand0=spi-nand0"
+CONFIG_MTDPARTS_DEFAULT="mtdparts=spi-nand0:-(ubi)"
+CONFIG_CMD_UBI=y
+CONFIG_OF_EMBED=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+# CONFIG_DM_DEVICE_REMOVE is not set
+CONFIG_HAVE_BLOCK_DEVICE=y
+CONFIG_CLK=y
+CONFIG_CPU=y
+CONFIG_DM_GPIO=y
+CONFIG_LED=y
+CONFIG_LED_BLINK=y
+CONFIG_LED_GPIO=y
+CONFIG_MTD=y
+CONFIG_MTD_SPI_NAND=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_XMC=y
+CONFIG_SPI_FLASH_MTD=y
+CONFIG_PHY=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_RAM=y
+CONFIG_DM_RESET=y
+CONFIG_BAUDRATE=57600
+# CONFIG_SPL_SERIAL_PRESENT is not set
+CONFIG_DEBUG_UART_SHIFT=2
+CONFIG_DEBUG_UART_ANNOUNCE=y
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_MT76XX_SPI=y
+CONFIG_SYSRESET_SYSCON=y
diff --git a/include/configs/gardena-smart-gateway-mt7688.h b/include/configs/gardena-smart-gateway-mt7688.h
new file mode 100644
index 0000000000..5ec9c6a041
--- /dev/null
+++ b/include/configs/gardena-smart-gateway-mt7688.h
@@ -0,0 +1,56 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 Stefan Roese <sr@denx.de>
+ */
+
+#ifndef __CONFIG_GARDENA_SMART_GATEWAY_H
+#define __CONFIG_GARDENA_SMART_GATEWAY_H
+
+/* CPU */
+#define CONFIG_SYS_MIPS_TIMER_FREQ	200000000
+
+/* RAM */
+#define CONFIG_NR_DRAM_BANKS		1
+#define CONFIG_SYS_SDRAM_BASE		0x80000000
+
+#define CONFIG_SYS_LOAD_ADDR		CONFIG_SYS_SDRAM_BASE + 0x100000
+
+#define CONFIG_SYS_INIT_SP_OFFSET	0x400000
+
+#ifdef CONFIG_BOOT_RAM
+#define CONFIG_SKIP_LOWLEVEL_INIT
+#endif
+
+/* UART */
+#define CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200, \
+					  230400, 500000, 1500000 }
+
+/* RAM */
+#define CONFIG_SYS_MEMTEST_START	0x80100000
+#define CONFIG_SYS_MEMTEST_END		0x80400000
+
+/* Memory usage */
+#define CONFIG_SYS_MAXARGS		64
+#define CONFIG_SYS_MALLOC_LEN		(1024 * 1024)
+#define CONFIG_SYS_BOOTPARAMS_LEN	(128 * 1024)
+#define CONFIG_SYS_CBSIZE		512
+
+/* U-Boot */
+#define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
+
+/* Environment settings */
+#define CONFIG_ENV_OFFSET		0x80000
+#define CONFIG_ENV_SIZE			(64 << 10)
+#define CONFIG_ENV_SECT_SIZE		(64 << 10)
+#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
+#define CONFIG_ENV_OFFSET_REDUND	(CONFIG_ENV_OFFSET + \
+						CONFIG_ENV_SECT_SIZE)
+#define CONFIG_ENV_SIZE_REDUND		CONFIG_ENV_SIZE
+
+/*
+ * Environment is right behind U-Boot in flash. Make sure U-Boot
+ * doesn't grow into the environment area.
+ */
+#define CONFIG_BOARD_SIZE_LIMIT		CONFIG_ENV_OFFSET
+
+#endif /* __CONFIG_GARDENA_SMART_GATEWAY_H */