On 10.08.2018 09:48, Stefan Roese wrote:
> The LinkIt Smart 7688 modules have a MT7688 SoC with 128 MiB of RAM
> and 32 MiB of flash (SPI NOR).
>
> The mt7628a.dtsi file is imported from Linux v4.17.
>
> 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 <s...@denx.de>
> Cc: Daniel Schwierzeck <daniel.schwierz...@gmail.com>
> ---
> v2:
> - Kconfig entries added with this patch now
>
> arch/mips/dts/linkit-smart-7688.dts | 46 ++++++++
> arch/mips/dts/mt7628a.dtsi | 135 ++++++++++++++++++++++
> arch/mips/mach-mt7620/Kconfig | 13 +++
> board/seeed/linkit-smart-7688/Kconfig | 12 ++
> board/seeed/linkit-smart-7688/MAINTAINERS | 8 ++
> board/seeed/linkit-smart-7688/Makefile | 3 +
> board/seeed/linkit-smart-7688/board.c | 22 ++++
> configs/linkit-smart-7688-ram_defconfig | 58 ++++++++++
> configs/linkit-smart-7688_defconfig | 62 ++++++++++
> include/configs/linkit-smart-7688.h | 52 +++++++++
> 10 files changed, 411 insertions(+)
> create mode 100644 arch/mips/dts/linkit-smart-7688.dts
> create mode 100644 arch/mips/dts/mt7628a.dtsi
> create mode 100644 board/seeed/linkit-smart-7688/Kconfig
> create mode 100644 board/seeed/linkit-smart-7688/MAINTAINERS
> create mode 100644 board/seeed/linkit-smart-7688/Makefile
> create mode 100644 board/seeed/linkit-smart-7688/board.c
> create mode 100644 configs/linkit-smart-7688-ram_defconfig
> create mode 100644 configs/linkit-smart-7688_defconfig
> create mode 100644 include/configs/linkit-smart-7688.h
>
> diff --git a/arch/mips/dts/linkit-smart-7688.dts
> b/arch/mips/dts/linkit-smart-7688.dts
> new file mode 100644
> index 0000000000..df4bf907c6
> --- /dev/null
> +++ b/arch/mips/dts/linkit-smart-7688.dts
> @@ -0,0 +1,46 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2018 Stefan Roese <s...@denx.de>
> + */
> +
> +/dts-v1/;
> +
> +#include "mt7628a.dtsi"
> +
> +/ {
> + compatible = "seeed,linkit-smart-7688", "ralink,mt7628a-soc";
> + model = "LinkIt-Smart-7688";
> +
> + aliases {
> + serial0 = &uart2;
> + spi0 = &spi0;
> + };
> +
> + memory@0 {
> + device_type = "memory";
> + reg = <0x0 0x08000000>;
> + };
> +
> + chosen {
> + bootargs = "console=ttyS0,57600";
> + stdout-path = &uart2;
> + };
> +};
> +
> +&uart2 {
> + 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>;
> + };
> +};
> diff --git a/arch/mips/dts/mt7628a.dtsi b/arch/mips/dts/mt7628a.dtsi
> new file mode 100644
> index 0000000000..d00f528e1f
> --- /dev/null
> +++ b/arch/mips/dts/mt7628a.dtsi
> @@ -0,0 +1,135 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +/ {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "ralink,mt7628a-soc";
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu@0 {
> + compatible = "mti,mips24KEc";
> + device_type = "cpu";
> + reg = <0>;
> + };
> + };
> +
> + resetc: reset-controller {
> + compatible = "ralink,rt2880-reset";
> + #reset-cells = <1>;
> + };
> +
> + cpuintc: interrupt-controller {
> + #address-cells = <0>;
> + #interrupt-cells = <1>;
> + interrupt-controller;
> + compatible = "mti,cpu-interrupt-controller";
> + };
> +
> + palmbus@10000000 {
> + compatible = "palmbus", "simple-bus";
> + reg = <0x10000000 0x200000>;
> + ranges = <0x0 0x10000000 0x1FFFFF>;
> +
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + sysc: system-controller@0 {
> + compatible = "ralink,mt7620a-sysc", "syscon";
> + reg = <0x0 0x100>;
> + };
> +
> + intc: interrupt-controller@200 {
> + compatible = "ralink,rt2880-intc";
> + reg = <0x200 0x100>;
> +
> + interrupt-controller;
> + #interrupt-cells = <1>;
> +
> + resets = <&resetc 9>;
> + reset-names = "intc";
> +
> + interrupt-parent = <&cpuintc>;
> + interrupts = <2>;
> +
> + ralink,intc-registers = <0x9c 0xa0
> + 0x6c 0xa4
> + 0x80 0x78>;
> + };
> +
> + memory-controller@300 {
> + compatible = "ralink,mt7620a-memc";
> + reg = <0x300 0x100>;
> + };
> +
> + spi0: spi@b00 {
> + compatible = "ralink,mt7621-spi";
> + reg = <0xb00 0x40>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + };
> +
> + uart0: uartlite@c00 {
> + compatible = "ns16550a";
> + reg = <0xc00 0x100>;
> +
> + resets = <&resetc 12>;
> + reset-names = "uart0";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <20>;
> +
> + reg-shift = <2>;
> + };
> +
> + uart1: uart1@d00 {
> + compatible = "ns16550a";
> + reg = <0xd00 0x100>;
> +
> + resets = <&resetc 19>;
> + reset-names = "uart1";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <21>;
> +
> + reg-shift = <2>;
> + };
> +
> + uart2: uart2@e00 {
> + compatible = "ns16550a";
> + reg = <0xe00 0x100>;
> +
> + resets = <&resetc 20>;
> + reset-names = "uart2";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <22>;
> +
> + reg-shift = <2>;
> + };
> + };
> +
> + usb_phy: usb-phy@10120000 {
> + compatible = "mediatek,mt7628-usbphy";
> + reg = <0x10120000 0x1000>;
> +
> + #phy-cells = <0>;
> +
> + ralink,sysctl = <&sysc>;
> + resets = <&resetc 22 &resetc 25>;
> + reset-names = "host", "device";
> + };
> +
> + ehci@101c0000 {
> + compatible = "generic-ehci";
> + reg = <0x101c0000 0x1000>;
> +
> + phys = <&usb_phy>;
> + phy-names = "usb";
> +
> + interrupt-parent = <&intc>;
> + interrupts = <18>;
> + };
> +};
> diff --git a/arch/mips/mach-mt7620/Kconfig b/arch/mips/mach-mt7620/Kconfig
> index 396fbd0141..ef1211d172 100644
> --- a/arch/mips/mach-mt7620/Kconfig
> +++ b/arch/mips/mach-mt7620/Kconfig
> @@ -21,6 +21,17 @@ endchoice
> choice
> prompt "Board select"
>
> +config BOARD_LINKIT_SMART_7688
> + bool "LinkIt Smart 7688"
> + depends on SOC_MT7620
> + select SUPPORTS_BOOT_RAM
> + help
> + Seeed LinkIt Smart 7688 boards have a MT7688 SoC with 128 MiB of RAM
> + and 32 MiB of flash (SPI).
> + Between its different peripherals there's an integrated switch with 4
> + ethernet ports, 1 USB port, 1 UART, GPIO buttons and LEDs, and
> + a MT7688 (PCIe).
> +
> endchoice
>
> choice
> @@ -110,4 +121,6 @@ endchoice
> config SUPPORTS_BOOT_RAM
> bool
>
> +source "board/seeed/linkit-smart-7688/Kconfig"
> +
> endmenu
> diff --git a/board/seeed/linkit-smart-7688/Kconfig
> b/board/seeed/linkit-smart-7688/Kconfig
> new file mode 100644
> index 0000000000..a9d63285c3
> --- /dev/null
> +++ b/board/seeed/linkit-smart-7688/Kconfig
> @@ -0,0 +1,12 @@
> +if BOARD_LINKIT_SMART_7688
> +
> +config SYS_BOARD
> + default "linkit-smart-7688"
> +
> +config SYS_VENDOR
> + default "seeed"
> +
> +config SYS_CONFIG_NAME
> + default "linkit-smart-7688"
> +
> +endif
> diff --git a/board/seeed/linkit-smart-7688/MAINTAINERS
> b/board/seeed/linkit-smart-7688/MAINTAINERS
> new file mode 100644
> index 0000000000..c3bbad4231
> --- /dev/null
> +++ b/board/seeed/linkit-smart-7688/MAINTAINERS
> @@ -0,0 +1,8 @@
> +LINKIT_SMART_7688 BOARD
> +M: Stefan Roese <s...@denx.de>
> +S: Maintained
> +F: board/seeed/linkit-smart-7688
> +F: include/configs/linkit-smart-7688.h
> +F: configs/linkit-smart-7688_defconfig
> +F: configs/linkit-smart-7688_ram_defconfig
> +F: arch/mips/dts/linkit-smart-7688.dts
> diff --git a/board/seeed/linkit-smart-7688/Makefile
> b/board/seeed/linkit-smart-7688/Makefile
> new file mode 100644
> index 0000000000..70cd7a8e56
> --- /dev/null
> +++ b/board/seeed/linkit-smart-7688/Makefile
> @@ -0,0 +1,3 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +
> +obj-y += board.o
> diff --git a/board/seeed/linkit-smart-7688/board.c
> b/board/seeed/linkit-smart-7688/board.c
> new file mode 100644
> index 0000000000..fbe94cc292
> --- /dev/null
> +++ b/board/seeed/linkit-smart-7688/board.c
> @@ -0,0 +1,22 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (C) 2018 Stefan Roese <s...@denx.de>
> + */
> +
> +#include <common.h>
> +#include <asm/io.h>
> +
> +#define MT76XX_GPIO1_MODE 0xb0000060
should be a physical address
> +
> +void board_debug_uart_init(void)
> +{
> + /* Select UART2 mode instead of GPIO mode (default) */
> + clrbits_le32((void __iomem *)MT76XX_GPIO1_MODE, GENMASK(27, 26));
with the comment above, this is preferred:
void __iomem *gpio_mode = ioremap_nocache(MT76XX_GPIO1_MODE);
clrbits_le32(gpio_mode), GENMASK(27, 26));
> +}
> +
> +int board_early_init_f(void)
> +{
> + board_debug_uart_init();
this will be called automatically if you enable CONFIG_DEBUG_UART_BOARD_INIT
> +
> + return 0;
> +}
> diff --git a/configs/linkit-smart-7688-ram_defconfig
> b/configs/linkit-smart-7688-ram_defconfig
> new file mode 100644
> index 0000000000..4b269f459b
> --- /dev/null
> +++ b/configs/linkit-smart-7688-ram_defconfig
> @@ -0,0 +1,58 @@
> +CONFIG_MIPS=y
> +CONFIG_SYS_TEXT_BASE=0x80010000
> +CONFIG_DEBUG_UART_BOARD_INIT=y
> +CONFIG_DEBUG_UART_BASE=0x10000e00
> +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="linkit-smart-7688"
> +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_SF=y
> +CONFIG_CMD_SPI=y
> +# CONFIG_CMD_NET is not set
> +CONFIG_CMD_TIME=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_SPI_FLASH=y
> +CONFIG_SPI_FLASH_4BYTE_MODE_ONLY=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_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/configs/linkit-smart-7688_defconfig
> b/configs/linkit-smart-7688_defconfig
> new file mode 100644
> index 0000000000..cdb8c06517
> --- /dev/null
> +++ b/configs/linkit-smart-7688_defconfig
> @@ -0,0 +1,62 @@
> +CONFIG_MIPS=y
> +CONFIG_SYS_TEXT_BASE=0xbc000000
> +CONFIG_DEBUG_UART_BOARD_INIT=y
> +CONFIG_DEBUG_UART_BASE=0x10000e00
> +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="linkit-smart-7688"
> +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_CRC32 is not set
> +CONFIG_CMD_MEMINFO=y
> +# CONFIG_CMD_FLASH is not set
> +# CONFIG_CMD_LOADS is not set
> +CONFIG_CMD_SF=y
> +CONFIG_CMD_SPI=y
> +# CONFIG_CMD_NET is not set
> +CONFIG_CMD_TIME=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_SPI_FLASH=y
> +CONFIG_SPI_FLASH_4BYTE_MODE_ONLY=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_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/linkit-smart-7688.h
> b/include/configs/linkit-smart-7688.h
> new file mode 100644
> index 0000000000..be6cffee35
> --- /dev/null
> +++ b/include/configs/linkit-smart-7688.h
> @@ -0,0 +1,52 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Copyright (C) 2018 Stefan Roese <s...@denx.de>
> + */
> +
> +#ifndef __CONFIG_LINKIT_SMART_7688_H
> +#define __CONFIG_LINKIT_SMART_7688_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 0x40000
> +#define CONFIG_ENV_SIZE (16 << 10)
> +#define CONFIG_ENV_SECT_SIZE (64 << 10)
> +
> +/*
> + * 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_LINKIT_SMART_7688_H */
>
--
- Daniel
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