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.
Tested-by: Frank Wunderlich <frank-w@public-files.de>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 3c7ecd2..adb843c 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -872,6 +872,7 @@
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 \
diff --git a/arch/arm/dts/mt7622-rfb.dts b/arch/arm/dts/mt7622-rfb.dts
new file mode 100644
index 0000000..ec30f5c
--- /dev/null
+++ b/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 = <®_3p3v>;
+ vqmmc-supply = <®_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 = <®_3p3v>;
+ vqmmc-supply = <®_3p3v>;
+};
+
+&watchdog {
+ pinctrl-names = "default";
+ pinctrl-0 = <&watchdog_pins>;
+ status = "okay";
+};