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>

1 files changed, 142 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar9331_etactica-eg200.dts b/target/linux/ath79/dts/ar9331_etactica-eg200.dts
new file mode 100644
index 0000000000..1dc96081c2
--- /dev/null
+++ b/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>;
+};