ath79: add etactica-eg200 support

Based on original ar71xx eg200 board files

Tested working:
* usb hub, storage and serial port
* ethernet
* wifi
* leds
* button

sysupgrade from self->self passes validity checks.
sysupgrade from old ar71xx->ath79 passes. (however this doesn't migrate
wireless driver configs)

Only unknown issue is the existance of a /sys/class/leds/ath9k-phy0,
which doesn't "exist"

Signed-off-by: Karl Palsson <karlp@etactica.com>

target/linux/ath79/base-files/etc/board.d/01_leds

@@ -18,6 +18,12 @@ case "$board" in
 	ucidef_set_led_rssi "rssimediumhigh" "RSSIMEDIUMHIGH" "$boardname:green:rssi3" "wlan0" "60" "100"
 	ucidef_set_led_rssi "rssihigh" "RSSIHIGH" "$boardname:green:rssi4" "wlan0" "80" "100"
 	;;
+"etactica,eg200")
+	ucidef_set_led_netdev "lan" "LAN" "$boardname:red:eth0" "eth0"
+	ucidef_set_led_wlan "wlan" "WLAN" "$boardname:red:wlan" "phy0tpt"
+	ucidef_set_led_oneshot "modbus" "Modbus" "$boardname:red:modbus" "100" "33"
+	ucidef_set_led_default "etactica" "etactica" "$boardname:red:etactica" "ignore"
+	;;
 "glinet,ar150")
 	ucidef_set_led_wlan "wlan" "WLAN" "gl-ar150:orange:wlan" "phy0tpt"
 	;;

target/linux/ath79/base-files/etc/board.d/02_network

@@ -8,6 +8,9 @@ ath79_setup_interfaces()
 	local board="$1"
 
 	case "$board" in
+	"etactica,eg200")
+		ucidef_set_interface_lan "eth0" "dhcp"
+		;;
 	"avm,fritz300e"|\
 	"tplink,tl-mr10u"|\
 	"tplink,tl-wr703n"|\

target/linux/ath79/dts/ar9331_etactica-eg200.dts

@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "ar9331.dtsi"
+
+/ {
+	model = "eTactica EG200";
+	compatible = "etactica,eg200", "rme-eg200";
+
+        aliases {
+                serial0 = &uart;
+        };
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x4000000>;
+	};
+
+	keys {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <50>;
+
+		restore {
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		modbus {
+			label = "eg200:red:modbus";
+			gpios = <&gpio 16 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		etactica {
+			label = "eg200:red:etactica";
+			gpios = <&gpio 15 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+
+		eth0 {
+			label = "eg200:red:eth0";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		wlan {
+			label = "eg200:red:wlan";
+			gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+	};
+};
+
+&uart {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&usb {
+	dr_mode = "host";
+	status = "okay";
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&mdio0 {
+	status = "okay";
+	phy4: ethernet-phy@4 {
+		reg = <4>;
+		phy-mode = "mii";
+	};
+};
+
+&eth0 {
+	status = "okay";
+	mtd-mac-address = <&art 0x0>;
+	phy-handle = <&phy4>;
+
+	gmac-config {
+		device = <&gmac>;
+		switch-phy-addr-swap = <1>;
+		switch-phy-swap = <1>;
+	};
+};
+
+&spi {
+	num-chipselects = <1>;
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <50000000>;
+		reg = <0>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			uboot@0 {
+				reg = <0x0 0x40000>;
+				read-only;
+			};
+
+			uboot-env@40000 {
+				reg = <0x40000 0x10000>;
+				read-only;
+			};
+
+			firmware@50000 {
+				reg = <0x50000 0xfa0000>;
+			};
+
+			art: art@ff0000 {
+				reg = <0xff0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&wmac {
+	status = "okay";
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&art 0x1002>;
+};

target/linux/ath79/image/generic.mk

@@ -44,6 +44,15 @@ define Device/embeddedwireless_dorin
 endef
 TARGET_DEVICES += embeddedwireless_dorin
 
+define Device/etactica-eg200
+  ATH_SOC := ar9331
+  DEVICE_TITLE := eTactica EG200
+  DEVICE_PACKAGES := kmod-usb-chipidea2 kmod-ledtrig-oneshot \
+	kmod-usb-serial kmod-usb-serial-ftdi kmod-usb-storage  kmod-fs-ext4
+  SUPPORTED_DEVICES += etactica,eg200 rme-eg200
+endef
+TARGET_DEVICES += etactica-eg200
+
 define Device/glinet_ar150
   ATH_SOC := ar9330
   DEVICE_TITLE := GL.iNet GL-AR150