ramips: add support for the YouHua WR1200JS

YouHua tech WR1200JS is an AC1200 router with 5 1Gb ports (4 Lan, 1 Wan)
and 1 USB 2.0 port.

Devices is base on MediaTek MT7621AT + MT7603E + MT7612E.

Specification:

- MT7612AT (880 MHz)
- 128 MB of RAM
- 16 MB of FLASH (SPI NOR)
- 5x 10/100/1000 Mbps Ethernet
- 2T2R 2.4 GHz (MT7603E)
- 2T2R 5 GHz (MT7612E)
- 1x USB 2.0
- 10x LED (Power 2G 5G WPS Internet LAN4-1 USB)
- 3x button (reset wifi wps)
- DC jack for main power input (12V)

Installation:

1.) Press reset key 5 sec and restore the factory default
2.) Login webUI and change username to root and set a
    new password
3.) Visit http://192.168.2.254/adm/telnetd.shtml and
    turn on the telnet service
4.) Copy openwrt-ramips-mt7621-youhua_wr1200js-initramfs-kernel.bin
    to a usb pan
5.) Plug the usb pan to the router, telnet to the router
    and login by root
6.) cd /media/sda1 and check the initramfs file is there
7.) exec command:
    mtd_write write openwrt-ramips-mt7621-youhua_wr1200js-initramfs-kernel.bin Kernel
8.) reboot and visit 192.168.1.1

Signed-off-by: Zheng Qian <sotux82@gmail.com>

1 files changed, 139 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/WR1200JS.dts b/target/linux/ramips/dts/WR1200JS.dts
new file mode 100644
index 0000000000..2169e74e23
--- /dev/null
+++ b/target/linux/ramips/dts/WR1200JS.dts
@@ -0,0 +1,139 @@
+/dts-v1/;
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "youhua,wr1200js", "mediatek,mt7621-soc";
+	model = "YouHua WR1200JS";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x8000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		internet {
+			label = "wr1200js:blue:internet";
+			gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
+		};
+
+		wps {
+			label = "wr1200js:blue:wps";
+			gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
+		};
+
+		usb {
+			label = "wr1200js:blue:usb";
+			gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+
+		wifi {
+			label = "wifi";
+			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RFKILL>;
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
+
+		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;
+		};
+
+		partition@50000 {
+			label = "firmware";
+			reg = <0x50000 0xfb0000>;
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+
+	pcie0 {
+		mt76@0,0 {
+			reg = <0x0000 0 0 0 0>;
+			device_type = "pci";
+			mediatek,mtd-eeprom = <&factory 0x0000>;
+		};
+	};
+
+	pcie1 {
+		mt76@1,0 {
+			reg = <0x0000 0 0 0 0>;
+			device_type = "pci";
+			mediatek,mtd-eeprom = <&factory 0x8000>;
+			ieee80211-freq-limit = <5000000 6000000>;
+
+			led {
+				led-sources = <2>;
+				led-active-low;
+			};
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0xe000>;
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "i2c", "uart2", "uart3", "wdt";
+			ralink,function = "gpio";
+		};
+	};
+};