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mips: Add LinkIt Smart 7688 support

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The LinkIt Smart 7688 modules have a MT7688 SoC with 128 MiB of RAM
and 32 MiB of flash (SPI NOR).

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>
[fixed and regenerated defconfig files]
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Stefan Roese 2018-08-16 15:27:30 +02:00 committed by Daniel Schwierzeck
parent 4c835a607b
commit b02f76a835
9 changed files with 265 additions and 0 deletions
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46
arch/mips/dts/linkit-smart-7688.dts Normal file
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@ -0,0 +1,46 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018 Stefan Roese <sr@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>;
};
};

13
arch/mips/mach-mt7620/Kconfig
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@ -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

12
board/seeed/linkit-smart-7688/Kconfig Normal file
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@ -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

8
board/seeed/linkit-smart-7688/MAINTAINERS Normal file
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@ -0,0 +1,8 @@
LINKIT_SMART_7688 BOARD
M: Stefan Roese <sr@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

3
board/seeed/linkit-smart-7688/Makefile Normal file
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# SPDX-License-Identifier: GPL-2.0+
obj-y += board.o

26
board/seeed/linkit-smart-7688/board.c Normal file
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@ -0,0 +1,26 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Stefan Roese <sr@denx.de>
*/
#include <common.h>
#include <asm/io.h>
#define MT76XX_GPIO1_MODE 0xb0000060
void board_debug_uart_init(void)
{
/* Select UART2 mode instead of GPIO mode (default) */
clrbits_le32((void __iomem *)MT76XX_GPIO1_MODE, GENMASK(27, 26));
}
int board_early_init_f(void)
{
/*
* The pin muxing of UART2 also needs to be done, if debug uart
* is not enabled. So we need to call this function here as well.
*/
board_debug_uart_init();
return 0;
}

51
configs/linkit-smart-7688-ram_defconfig Normal file
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CONFIG_MIPS=y
CONFIG_SYS_TEXT_BASE=0x80010000
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_NR_DRAM_BANKS=1
# 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_DEFAULT_DEVICE_TREE="linkit-smart-7688"
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_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_SYS_NS16550=y
CONFIG_SPI=y
CONFIG_SYSRESET_SYSCON=y

55
configs/linkit-smart-7688_defconfig Normal file
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@ -0,0 +1,55 @@
CONFIG_MIPS=y
CONFIG_SYS_TEXT_BASE=0x9c000000
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_NR_DRAM_BANKS=1
# 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_DEFAULT_DEVICE_TREE="linkit-smart-7688"
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_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_SYS_NS16550=y
CONFIG_SPI=y
CONFIG_SYSRESET_SYSCON=y

51
include/configs/linkit-smart-7688.h Normal file
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2018 Stefan Roese <sr@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_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 */