ramips: add Huasifei MT7621 DTU support

target/linux/ramips/dts/mt7621_huasifei_mt7621dtu.dts

@@ -0,0 +1,180 @@
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "huasifei,mt7621dtu", "mediatek,mt7621-soc";
+	model = "Huasifei MT7621 DTU";
+
+	aliases {
+		led-boot = &led_status;
+		led-failsafe = &led_status;
+		led-running = &led_status;
+		led-upgrade = &led_status;
+		label-mac-device = &gmac0;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		button-reset {
+			label = "Reset";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_status: led-status {
+			label = "green:status";
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+		};
+
+		led-cellular-4g {
+			label = "green:wwan4g";
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+		};
+
+		led-cellular-5g {
+			label = "green:wwan5g";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+		};
+
+		led-cellular-l2 {
+			label = "green:wwan-l2";
+			gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
+		};
+
+		led-cellular-l3 {
+			label = "green:wwan-l3";
+			gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
+		};
+	};
+	
+	gpio-export {
+		compatible = "gpio-export";
+		#size-cells = <0>;
+
+		modem_enable {
+			gpio-export,name = "modem_enable";
+			gpio-export,output = <1>;
+			gpios = <&gpio 4 GPIO_ACTIVE_HIGH>;
+		};
+
+		modem_reset {
+			gpio-export,name = "modem_reset";
+			gpio-export,output = <0>;
+			gpios = <&gpio 6 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&sdhci {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "u-boot-env";
+				reg = <0x30000 0x10000>;
+				read-only;
+			};
+
+			factory: partition@40000 {
+				label = "factory";
+				reg = <0x40000 0x10000>;
+				read-only;
+
+				compatible = "nvmem-cells";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				macaddr_factory_e000: macaddr@e000 {
+					reg = <0xe000 0x6>;
+				};
+			};
+
+			partition@50000 {
+				compatible = "denx,uimage";
+				reg = <0x50000 0x1fb0000>;
+				label = "firmware";
+			};
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		compatible = "pci14c3,7603";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x0000>;
+	};
+};
+
+&pcie1 {
+	wifi@0,0 {
+		compatible = "pci14c3,7662";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x8000>;
+		ieee80211-freq-limit = <5000000 6000000>;
+
+		led {
+			led-sources = <2>;
+		};
+	};
+};
+
+&gmac0 {
+	mtd-mac-address = <&factory 0xe000>;
+};
+
+&gmac1 {
+	mtd-mac-address = <&factory 0xe006>;
+	status = "okay";
+};
+
+&gsw {
+	mediatek,portmap = "llllw";
+	status = "okay";
+};
+
+&hnat {
+	mtketh-wan = "eth1";
+	mtketh-ppd = "eth0";
+	mtketh-lan = "eth0";
+	mtketh-max-gmac = <2>;
+	/delete-property/ mtkdsa-wan-port;
+};
+
+&switch0 {
+	status = "disabled";
+};

target/linux/ramips/image/mt7621.mk

@@ -851,6 +851,18 @@ define Device/ht-jsh_0211
 endef
 TARGET_DEVICES += ht-jsh_0211
 
+define Device/huasifei_mt7621dtu
+  $(Device/dsa-migration)
+  $(Device/uimage-lzma-loader)
+  IMAGE_SIZE := 32448k
+  DEVICE_VENDOR := Huasifei
+  DEVICE_MODEL := MT7621 DTU
+  DEVICE_PACKAGES := kmod-ata-ahci kmod-mt7603 kmod-mt76x2 kmod-sdhci-mt7620 \
+	kmod-usb3 kmod-usb-net-cdc-mbim kmod-usb-net-qmi-wwan \
+	kmod-usb-serial-option luci-proto-qmi
+endef
+TARGET_DEVICES += huasifei_mt7621dtu
+
 define Device/huasifei_ws1208v2
   $(Device/dsa-migration)
   $(Device/uimage-lzma-loader)

target/linux/ramips/mt7621/base-files/etc/init.d/modem-enable

@@ -0,0 +1,11 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+
+boot() {
+	case $(board_name) in
+	huasifei,ws1208v2)
+		echo 1 > /sys/class/gpio/modem_reset/value
+		;;
+	esac
+}