ramips: add support for Netgear WN3000RPv3

This patch adds support for the Netgear WN3000RPv3
http://www.netgear.com/support/product/wn3000rpv3.aspx

Specifications:
- SoC: MediaTek MT7620A (580MHz, ramips)
- RAM: 32MB DDR
- Storage: 8MB NOR SPI flash
- Wireless: builtin MT7620A, 2x2:2 with u.FL connectors
- Ethernet: 1x100M
- Serial: JP1 header, 57600-8N1
- Stock firmware based on OpenWRT Kamikaze

Like the EX2700, the bootloader expects a secondary image signature,
see https://forum.openwrt.org/viewtopic.php?pid=312577#p312577
This is why the same fakeroot image is used for the WN3000

Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>

target/linux/ramips/base-files/etc/board.d/01_leds

@@ -155,7 +155,8 @@ vr500)
 dir-860l-b1)
 	ucidef_set_led_netdev "wan" "wan" "$board:green:net" "eth0.2"
 	;;
-ex2700)
+ex2700|\
+wn3000rpv3)
 	ucidef_set_led_default "power_r" "POWER (red)" "$board:red:power" "0"
 	set_wifi_led "$board:green:router"
 	;;

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

@@ -58,6 +58,7 @@ ramips_setup_interfaces()
 	timecloud|\
 	w150m|\
 	widora-neo|\
+	wn3000rpv3|\
 	wnce2001|\
 	zbt-cpe102|\
 	zte-q7)

target/linux/ramips/base-files/etc/diag.sh

@@ -53,7 +53,8 @@ get_status_led() {
 	jhr-n825r|\
 	mpr-a1|\
 	mpr-a2|\
-	mzk-ex750np)
+	mzk-ex750np|\
+	wn3000rpv3)
 		status_led="$board:red:power"
 		;;
 	ac1200pro|\

target/linux/ramips/base-files/lib/ramips.sh

@@ -553,6 +553,9 @@ ramips_board_detect() {
 	*"WMR-300")
 		name="wmr-300"
 		;;
+	*"WN3000RPv3")
+		name="wn3000rpv3"
+		;;
 	*"WNCE2001")
 		name="wnce2001"
 		;;

target/linux/ramips/base-files/lib/upgrade/platform.sh

@@ -157,6 +157,7 @@ platform_check_image() {
 	wli-tx4-ag300n|\
 	wlr-6000|\
 	wmr-300|\
+	wn3000rpv3|\
 	wnce2001|\
 	wndr3700v5|\
 	wr512-3gn|\

target/linux/ramips/dts/WN3000RPV3.dts

@@ -0,0 +1,143 @@
+/* This file is released into the public domain */
+
+/dts-v1/;
+
+#include "mt7620a.dtsi"
+
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "ralink,mt7620a-soc";
+	model = "Netgear WN3000RPv3";
+
+	chosen {
+		bootargs = "console=ttyS0,57600";
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		power_g {
+			label = "wn3000rpv3:green:power";
+			gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		power_r {
+			label = "wn3000rpv3:red:power";
+			gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
+		};
+
+		client_g {
+			label = "wn3000rpv3:green:client";
+			gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+		};
+
+		client_r {
+			label = "wn3000rpv3:red:client";
+			gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+		};
+
+		router_g {
+			label = "wn3000rpv3:green:router";
+			gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
+		};
+
+		router_r {
+			label = "wn3000rpv3:red:router";
+			gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
+		};
+
+		wps {
+			label = "wn3000rpv3:green:wps";
+			gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
+		};
+
+		l_arrow {
+			label = "wn3000rpv3:blue:leftarrow";
+			gpios = <&gpio0 7 GPIO_ACTIVE_LOW>;
+		};
+
+		r_arrow {
+			label = "wn3000rpv3:blue:rightarrow";
+			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 1 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+
+		partition@30000 {
+			label = "u-boot-env";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+
+		partition@40000 {
+			label = "firmware";
+			reg = <0x40000 0x7b0000>;
+		};
+
+		art: partition@7f0000 {
+			label = "art";
+			reg = <0x7f0000 0x10000>;
+			read-only;
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&art 0x0>;
+};
+
+&wmac {
+	mtd-mac-address = <&art 0x6>;
+	ralink,mtd-eeprom = <&art 0x1000>;
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		default {
+			ralink,group = "i2c", "uartf", "spi refclk";
+			ralink,function = "gpio";
+		};
+	};
+};

target/linux/ramips/image/mt7620.mk

@@ -75,6 +75,17 @@ define Device/ex2700
 endef
 TARGET_DEVICES += ex2700
 
+define Device/wn3000rpv3
+  DTS := WN3000RPV3
+  BLOCKSIZE := 4k
+  IMAGES += factory.bin
+  KERNEL := $(KERNEL_DTB) | uImage lzma | pad-kernel-ex2700
+  IMAGE/factory.bin := $$(sysupgrade_bin) | check-size $$$$(IMAGE_SIZE) | \
+	netgear-header -B WN3000RPv3 -H 29764836+8+0+32+2x2+0
+  DEVICE_TITLE := Netgear WN3000RPv3
+endef
+TARGET_DEVICES += wn3000rpv3
+
 define Device/wt3020-4M
   DTS := WT3020-4M
   BLOCKSIZE := 4k