ath79: prepare for 1-port TP-Link EAP2x5 devices

TP-Link has developed a number of access points based on the AP152
reference board. In the EAP-series of 802.11ac access points, this
includes the following devices with one ethernet port:
* EAP225 v1/v2
* EAP225 v3
* EAP225-Outdoor v1
* EAP245 v1

Since the only differences between these devices are the ath10k wireless
radios and LEDs, a common base is provided for the overlapping support
requirements.

Hardware commonalities:
* SoC: QCA9563-AL3A MIPS 74kc v5.0 @ 775MHz, AHB @ 258MHz
* RAM: 128MiB DDR2 @ 650MHz
* Flash: 16MiB SPI NOR
* Wi-Fi 2.4GHz: provided by SoC
* Wi-Fi 5Ghz: ath10k chip on PCIe
* Ethernet: AR8033-AL1A, one 1GbE port (802.3at PoE)

Signed-off-by: Sander Vanheule <sander@svanheule.net>

target/linux/ath79/dts/qca9563_tplink_eap2x5-1port.dtsi

@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "qca956x.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	aliases {
+		label-mac-device = &eth0;
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "Reset button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&uart {
+	status = "okay";
+};
+
+&spi {
+	status = "okay";
+	num-cs = <1>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x020000>;
+				read-only;
+			};
+
+			partition@20000 {
+				label = "partition-table";
+				reg = <0x020000 0x010000>;
+				read-only;
+			};
+
+			info: partition@30000 {
+				label = "info";
+				reg = <0x030000 0x010000>;
+				read-only;
+			};
+
+			partition@40000 {
+				compatible = "openwrt,elf";
+				label = "firmware";
+				reg = <0x040000 0xd80000>;
+			};
+
+			partition@dc0000 {
+				label = "config";
+				reg = <0xdc0000 0x030000>;
+				read-only;
+			};
+
+			/* df0000-f30000 undefined in vendor firmware */
+
+			partition@f30000 {
+				label = "log";
+				reg = <0xf30000 0x0c0000>;
+				read-only;
+			};
+
+			art: partition@ff0000 {
+				label = "art";
+				reg = <0xff0000 0x010000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&pinmux {
+	mdio_pins: mdio_pins {
+		/* GPIO 10 as MDIO(0x20), GPIO 8 as MDC(0x21) */
+		pinctrl-single,bits = <0x8 0x00200021 0x00ff00ff>;
+	};
+};
+
+&mdio0 {
+	status = "okay";
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&mdio_pins>;
+
+	phy-mask = <0x10>;
+
+	phy4: ethernet-phy@4 {
+		reg = <4>;
+		reset-gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	phy-handle = <&phy4>;
+	phy-mode = "sgmii";
+
+	mtd-mac-address = <&info 0x8>;
+
+	qca956x-serdes-fixup;
+
+	gmac-config {
+		device = <&gmac>;
+	};
+};
+
+&wmac {
+	status = "okay";
+
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&info 0x8>;
+};