ramips: add support for Netgear EX3700

Specifications:
* SoC: MT7620A
* RAM: 64 MB DDR
* Flash: 8MB NOR SPI flash
* WiFi: MT7612E (5Ghz) and builtin MT7620A (2.4GHz)
* LAN: 1x100M

The -factory images can be flashed from the device's web
interface or via nmrpflash.

Co-authored-by: Paul Oranje <por@xs4all.nl>
Signed-off-by: Paul Oranje <por@xs4all.nl>
Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>

1 files changed, 162 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/EX3700.dts b/target/linux/ramips/dts/EX3700.dts
new file mode 100644
index 0000000000..72aeb6152d
--- /dev/null
+++ b/target/linux/ramips/dts/EX3700.dts
@@ -0,0 +1,162 @@
+/* This file is released into the public domain */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "mt7620a.dtsi"
+
+/ {
+	compatible = "ralink,mt7620a-soc";
+	model = "Netgear EX3700";
+
+	chosen {
+		bootargs = "console=ttyS0,57600";
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		power_g {
+			label = "ex3700:green:power";
+			gpios = <&gpio2 23 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		power_a {
+			label = "ex3700:amber:power";
+			gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		router_g {
+			label = "ex3700:green:router";
+			gpios = <&gpio2 25 GPIO_ACTIVE_LOW>;
+		};
+
+		router_r {
+			label = "ex3700:red:router";
+			gpios = <&gpio2 24 GPIO_ACTIVE_LOW>;
+		};
+
+		device_g {
+			label = "ex3700:green:device";
+			gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
+		};
+
+		device_r {
+			label = "ex3700:red:device";
+			gpios = <&gpio2 21 GPIO_ACTIVE_LOW>;
+		};
+
+		wps {
+			label = "ex3700:green:wps";
+			gpios = <&gpio2 27 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio2 26 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio2 {
+	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 = "config";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+
+		factory: partition@40000 {
+			label = "factory";
+			reg = <0x40000 0x10000>;
+			read-only;
+		};
+
+		partition@50000 {
+			label = "firmware";
+			reg = <0x50000 0x790000>;
+		};
+
+		partition@7e0000 {
+			label = "board_data";
+			reg = <0x7e0000 0x10000>;
+			read-only;
+		};
+
+		partition@7f0000 {
+			label = "nvram";
+			reg = <0x7f0000 0x10000>;
+			read-only;
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+
+	pcie-bridge {
+		mt76@0,0 {
+			reg = <0x0000 0 0 0 0 >;
+			device_type = "pci";
+			mediatek,mtd-eeprom = <&factory 0x8000>;
+			ieee80211-freq-limit = <5000000 6000000>;
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0x28>;
+};
+
+&wmac {
+	ralink,mtd-eeprom = <&factory 0x0>;
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		default {
+			ralink,group = "i2c", "rgmii2", "spi refclk";
+			ralink,function = "gpio";
+		};
+	};
+};