ramips: mt7621: Add new device AsiaRF AP7621-001

Hardware specs:
SoC:	Mediatek MT7621A
CPU:	4x 880Mhz
Cache:	32 KB I-Cache and 32 KB D-Cach
	256 KB L2 Cache (shared by Dual-Core)
RAM:	DDR3 512MB 16bits BUS
FLASH:	16MB
Switch:	Mediatek Gigabit Switch (1 x LAN, 1 x WAN)
USB:	1x 3.0
PCI:	3x Mini PCIe
GPS:	Quectel L70B
BTN:	Reset
LED:	- Power
	- Ethernet
	- Wifi
	- USB
UART:	UART is present as Pads with throughholes on the PCB.
	They are located on left side.
	3.3V - RX - GND - TX / 57600-8N1
	3.3V is the square pad

Installation:
The stock image is a modified openwrt and can be overflashed via
 # sysupgrade -F image.bin

Signed-off-by: Daniel Danzberger <daniel@dd-wrt.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[removed unused label, formatting]

target/linux/ramips/base-files/etc/board.d/02_network

@@ -39,6 +39,9 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0:lan:4" "1:lan:3" "2:lan:2" "3:lan:1" "4:wan:5" "6@eth0"
 		;;
+	asiarf,ap7621-001)
+		ucidef_add_switch "switch0" "0:lan" "4:wan" "6@eth0"
+		;;
 	3g150b|\
 	3g300m|\
 	a5-v11|\

target/linux/ramips/dts/AP7621-001.dts

@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "asiarf,ap7621-001", "mediatek,mt7621-soc";
+	model = "AsiaRF AP7621-001";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x1c000000>, <0x20000000 0x4000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,57600";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		wlan1 {
+			label = "ap7621-001:orange:wlan1";
+			gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan0 {
+			label = "ap7621-001:orange:wlan0";
+			gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&sdhci {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <40000000>;
+
+		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 0x2000>;
+			};
+
+			partition@32000 {
+				label = "2860";
+				reg = <0x32000 0x4000>;
+			};
+
+			partition@36000 {
+				label = "rtdev";
+				reg = <0x36000 0x2000>;
+			};
+
+			partition@38000 {
+				label = "Reserve";
+				reg = <0x38000 0x8000>;
+			};
+
+			factory: partition@40000 {
+				label = "factory";
+				reg = <0x40000 0x10000>;
+				read-only;
+			};
+
+			partition@50000 {
+				label = "firmware";
+				reg = <0x50000 0xfa0000>;
+				compatible = "denx,uimage";
+			};
+
+			partition@ff0000 {
+				label = "nvram";
+				reg = <0xff0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0xe000>;
+	mediatek,portmap = "llllw";
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "wdt", "jtag";
+			ralink,function = "gpio";
+		};
+	};
+};
+

target/linux/ramips/image/mt7621.mk

@@ -640,3 +640,13 @@ define Device/zbt-wg3526-32M
 	kmod-usb3 kmod-usb-ledtrig-usbport wpad-basic
 endef
 TARGET_DEVICES += zbt-wg3526-32M
+
+define Device/asiarf_ap7621-001
+  DTS := AP7621-001
+  IMAGE_SIZE := $(ralink_default_fw_size_16M)
+  DEVICE_TITLE := AsiaRF AP7621-001
+  DEVICE_PACKAGES := \
+	kmod-sdhci-mt7620 kmod-mt76x2 kmod-usb3
+endef
+TARGET_DEVICES += asiarf_ap7621-001
+