ramips: add support for Afoundry EW-1200

This device features both a 2.4 and 5Ghz radio, and supports
802.11a/b/g/n/ac modes.
It has 5 Gb-Ethernet ports and a USB 3.0 host port.

It is powered by the Mediatek MT7621 SoC, and the MT7602E and MT7612E wifi
chipsets, together with 128MB of RAM and 16 MB of SPI Flash.

The stock firmware is in fact based on some openwrt barrier breaker, with a
mediatek SDK kernel, and an afoundry custom made web interface (not LuCI
based).
Firmware update page on the stock web interface can not accept sysupgrade
images, it bricks the device.
At this point, the only working solution I found was to connect to the
serial console port (available on J4 header) and to use opkg to install
dropbear.
Then scp the sysupgrade file in the device's /tmp and run sysupgrade from
console without preserving configuration files.

Signed-off-by: Francois Goudal <francois@goudal.net>

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

@@ -19,6 +19,7 @@ board_config_update
 case $board in
 11acnas|\
 all0239-3g|\
+ew1200|\
 hw550-3g|\
 mofi3500-3gn|\
 sap-g3200u3|\

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

@@ -78,6 +78,7 @@ ramips_setup_interfaces()
 	dir-320-b1|\
 	dir-610-a1|\
 	dir-615-h1|\
+	ew1200|\
 	firewrt|\
 	hc5661a|\
 	hc5962|\

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

@@ -88,6 +88,7 @@ get_status_led() {
 		status_led="$board:blue:wlan"
 		;;
 	atp-52b|\
+	ew1200|\
 	ip2202)
 		status_led="$board:green:run"
 		;;

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

@@ -184,6 +184,9 @@ ramips_board_detect() {
 	*"ESR-9753")
 		name="esr-9753"
 		;;
+	*"EW1200")
+		name="ew1200"
+		;;
 	*"EX2700")
 		name="ex2700";
 		;;

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

@@ -53,6 +53,7 @@ platform_check_image() {
 	dwr-512-b|\
 	e1700|\
 	esr-9753|\
+	ew1200|\
 	ex2700|\
 	f7c027|\
 	firewrt|\

target/linux/ramips/dts/EW1200.dts

@@ -0,0 +1,127 @@
+/dts-v1/;
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "EW1200";
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x8000000>;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,57600";
+	};
+
+	palmbus: palmbus@1E000000 {
+		i2c@900 {
+			status = "okay";
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 18 1>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		status {
+			label = "ew1200:green:run";
+			gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
+		};
+
+		usb {
+			label = "ew1200:green:usb";
+			gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&sdhci {
+	status = "okay";
+};
+
+&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 0x8000>;
+			ieee80211-freq-limit = <5000000 6000000>;
+		};
+	};
+
+	pcie1 {
+		mt76@1,0 {
+			reg = <0x0000 0 0 0 0>;
+			device_type = "pci";
+			mediatek,mtd-eeprom = <&factory 0x0000>;
+			ieee80211-freq-limit = <2400000 2500000>;
+		};
+	};
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0xe000>;
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "wdt", "rgmii2", "wdt rst", "jtag", "mdio";
+			ralink,function = "gpio";
+		};
+	};
+};

target/linux/ramips/image/mt7621.mk

@@ -63,6 +63,14 @@ define Device/dir-860l-b1
 endef
 TARGET_DEVICES += dir-860l-b1
 
+define Device/ew1200
+  DTS := EW1200
+  IMAGE_SIZE := $(ralink_default_fw_size_16M)
+  DEVICE_TITLE := AFOUNDRY EW1200
+  DEVICE_PACKAGES := kmod-usb3 kmod-usb-ledtrig-usbport kmod-ata-core kmod-ata-ahci
+endef
+TARGET_DEVICES += ew1200
+
 define Device/firewrt
   DTS := FIREWRT
   IMAGE_SIZE := $(ralink_default_fw_size_16M)