Add support for MT7622 reference board

This adds a general board file based on MT7622 SoCs from MediaTek.
This commit is adding the basic boot support for the MT7622 rfb.

Signed-off-by: Sam Shih <sam.shih@mediatek.com>
Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>

arch/arm/dts/Makefile

@@ -872,6 +872,7 @@ dtb-$(CONFIG_SOC_K3_J721E) += k3-j721e-common-proc-board.dtb \
 			      k3-j721e-r5-common-proc-board.dtb
 
 dtb-$(CONFIG_ARCH_MEDIATEK) += \
+	mt7622-rfb.dtb \
 	mt7623n-bananapi-bpi-r2.dtb \
 	mt7629-rfb.dtb \
 	mt8512-bm1-emmc.dtb \

arch/arm/dts/mt7622-rfb.dts

@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+ * Author: Sam Shih <sam.shih@mediatek.com>
+ */
+
+/dts-v1/;
+#include "mt7622.dtsi"
+#include "mt7622-u-boot.dtsi"
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	model = "mt7622-rfb";
+	compatible = "mediatek,mt7622", "mediatek,mt7622-rfb";
+	chosen {
+		stdout-path = &uart0;
+		tick-timer = &timer0;
+	};
+
+	aliases {
+		spi0 = &snfi;
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0x40000000 0x10000000>;
+	};
+
+	reg_1p8v: regulator-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+};
+
+
+&pinctrl {
+	snfi_pins: snfi-pins {
+		mux {
+			function = "flash";
+			groups = "snfi";
+		};
+	};
+
+	snor_pins: snor-pins {
+		mux {
+			function = "flash";
+			groups = "spi_nor";
+		};
+	};
+
+	uart0_pins: uart0 {
+		mux {
+			function = "uart";
+			groups = "uart0_0_tx_rx" ;
+		};
+	};
+
+	watchdog_pins: watchdog-default {
+		mux {
+			function = "watchdog";
+			groups = "watchdog";
+		};
+	};
+
+	mmc0_pins_default: mmc0default {
+		mux {
+			function = "emmc";
+			groups =  "emmc";
+		};
+
+		/* "NDL0","NDL1","NDL2","NDL3","NDL4","NDL5","NDL6","NDL7",
+		 * "NRB","NCLE" pins are used as DAT0,DAT1,DAT2,DAT3,DAT4,
+		 * DAT5,DAT6,DAT7,CMD,CLK for eMMC respectively
+		 */
+		conf-cmd-dat {
+			pins = "NDL0", "NDL1", "NDL2",
+			       "NDL3", "NDL4", "NDL5",
+			       "NDL6", "NDL7", "NRB";
+			input-enable;
+			bias-pull-up;
+		};
+
+		conf-clk {
+			pins = "NCLE";
+			bias-pull-down;
+		};
+
+	};
+
+	mmc1_pins_default: mmc1default {
+		mux {
+			function = "sd";
+			groups =  "sd_0";
+		};
+		/* "I2S2_OUT, "I2S4_IN"", "I2S3_IN", "I2S2_IN",
+		 *  "I2S4_OUT", "I2S3_OUT" are used as DAT0, DAT1,
+		 *  DAT2, DAT3, CMD, CLK for SD respectively.
+		 */
+		conf-cmd-data {
+			pins = "I2S2_OUT", "I2S4_IN", "I2S3_IN",
+			       "I2S2_IN","I2S4_OUT";
+			input-enable;
+			drive-strength = <8>;
+			bias-pull-up;
+		};
+		conf-clk {
+			pins = "I2S3_OUT";
+			drive-strength = <12>;
+			bias-pull-down;
+		};
+		conf-cd {
+			pins = "TXD3";
+			bias-pull-up;
+		};
+
+	};
+};
+
+&snfi {
+	pinctrl-names = "default", "snfi";
+	pinctrl-0 = <&snor_pins>;
+	pinctrl-1 = <&snfi_pins>;
+	status = "okay";
+
+	spi-flash@0{
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		u-boot,dm-pre-reloc;
+	};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins>;
+	status = "okay";
+};
+
+&mmc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins_default>;
+	status = "okay";
+	bus-width = <8>;
+	max-frequency = <50000000>;
+	cap-sd-highspeed;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_3p3v>;
+	non-removable;
+};
+
+&mmc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc1_pins_default>;
+	status = "okay";
+	bus-width = <4>;
+	max-frequency = <50000000>;
+	cap-sd-highspeed;
+	r_smpl = <1>;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_3p3v>;
+};
+
+&watchdog {
+	pinctrl-names = "default";
+	pinctrl-0 = <&watchdog_pins>;
+	status = "okay";
+};

board/mediatek/mt7622/Kconfig

@@ -0,0 +1,17 @@
+if TARGET_MT7622
+
+config SYS_BOARD
+	default "mt7622"
+
+config SYS_CONFIG_NAME
+	default "mt7622"
+
+config MTK_BROM_HEADER_INFO
+	string
+	default "lk=1"
+
+config MTK_BROM_HEADER_INFO
+	string
+	default "media=nor"
+
+endif

board/mediatek/mt7622/MAINTAINERS

@@ -0,0 +1,6 @@
+MT7622
+M:	Sam Shih <sam.shih@mediatek.com>
+S:	Maintained
+F:	board/mediatek/mt7622
+F:	include/configs/mt7622.h
+F:	configs/mt7622_rfb_defconfig

board/mediatek/mt7622/Makefile

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier:	GPL-2.0
+
+obj-y	+= mt7622_rfb.o
+

board/mediatek/mt7622/mt7622_rfb.c

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ * Author: Sam Shih <sam.shih@mediatek.com>
+ */
+
+#include <common.h>
+#include <config.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+	return 0;
+}
+
+int board_late_init(void)
+{
+	gd->env_valid = 1; //to load environment variable from persistent store
+	env_relocate();
+	return 0;
+}

configs/mt7622_rfb_defconfig

@@ -0,0 +1,55 @@
+CONFIG_ARM=y
+CONFIG_POSITION_INDEPENDENT=y
+CONFIG_ARCH_MEDIATEK=y
+CONFIG_TARGET_MT7622=y
+CONFIG_SYS_TEXT_BASE=0x41e00000
+CONFIG_SYS_MALLOC_F_LEN=0x4000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_SMBIOS_PRODUCT_NAME=""
+CONFIG_FIT=y
+CONFIG_LOGLEVEL=7
+CONFIG_LOG=y
+CONFIG_LOG_MAX_LEVEL=6
+CONFIG_DEFAULT_FDT_FILE="mt7622-rfb"
+CONFIG_SYS_PROMPT="MT7622> "
+CONFIG_CMD_BOOTMENU=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_SF_TEST=y
+CONFIG_CMD_SMC=y
+CONFIG_DEFAULT_DEVICE_TREE="mt7622-rfb"
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_CLK=y
+CONFIG_DM_GPIO=y
+CONFIG_DM_MMC=y
+CONFIG_MMC_HS200_SUPPORT=y
+CONFIG_MMC_MTK=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SPI_FLASH_EON=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_ISSI=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_DM_ETH=y
+CONFIG_PINCTRL=y
+CONFIG_PINCONF=y
+CONFIG_PINCTRL_MT7622=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_MTK_POWER_DOMAIN=y
+CONFIG_RAM=y
+CONFIG_DM_RESET=y
+CONFIG_DM_SERIAL=y
+CONFIG_MTK_SERIAL=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_MTK_SNFI_SPI=y
+CONFIG_SYSRESET_WATCHDOG=y
+CONFIG_TIMER=y
+CONFIG_MTK_TIMER=y
+CONFIG_WDT_MTK=y
+CONFIG_LZ4=y
+CONFIG_LZO=y
+CONFIG_HEXDUMP=y

include/configs/mt7622.h

@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Configuration for MediaTek MT7629 SoC
+ *
+ * Copyright (C) 2019 MediaTek Inc.
+ * Author: Sam Shih <sam.shih@mediatek.com>
+ */
+
+#ifndef __MT7622_H
+#define __MT7622_H
+
+#include <linux/sizes.h>
+
+#define CONFIG_SYS_MAXARGS		8
+#define CONFIG_SYS_BOOTM_LEN		SZ_64M
+#define CONFIG_SYS_CBSIZE		SZ_1K
+#define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE +	\
+					sizeof(CONFIG_SYS_PROMPT) + 16)
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN		SZ_4M
+#define CONFIG_SYS_NONCACHED_MEMORY	SZ_1M
+
+/* Allow to overwrite serial and ethaddr */
+#define CONFIG_ENV_OVERWRITE
+
+#define CONFIG_SYS_MMC_ENV_DEV 0
+
+/* Uboot definition */
+#define CONFIG_SYS_UBOOT_BASE                   CONFIG_SYS_TEXT_BASE
+
+/* SPL -> Uboot */
+#define CONFIG_SYS_UBOOT_START		CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_TEXT_BASE + SZ_2M - \
+					 GENERATED_GBL_DATA_SIZE)
+/* UBoot -> Kernel */
+#define CONFIG_LOADADDR		        0x4007ff28
+#define CONFIG_SYS_LOAD_ADDR		CONFIG_LOADADDR
+
+/* DRAM */
+#define CONFIG_SYS_SDRAM_BASE		0x40000000
+
+/* Ethernet */
+#define CONFIG_IPADDR			192.168.1.1
+#define CONFIG_SERVERIP			192.168.1.3
+
+#endif