ath79: add support for TP-Link TL-WA850RE v1

This ports support for the TL-WA850RE v1 range extender from ar71xx
to ath79.

Specifications:
  Board: AP123 / AR9341 rev. 3
  Flash/RAM: 4/32 MiB
  CPU: 535 MHz
  WiFi: 2.4 GHz b/g/n
  Ethernet: 1 port (100M)

Flashing instructions:
Upload the factory image via the vendor firmware upgrade option.

Recovery:
Note that this device does not provide TFTP via ethernet like many
other TP-Link devices do. You will have to open the case if you
require recovery beyond failsafe.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 82 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar9341_tplink_tl-wa.dtsi b/target/linux/ath79/dts/ar9341_tplink_tl-wa.dtsi
new file mode 100644
index 0000000000..07cf2063df
--- /dev/null
+++ b/target/linux/ath79/dts/ar9341_tplink_tl-wa.dtsi
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "ar9341.dtsi"
+
+/ {
+	aliases {
+		serial0 = &uart;
+		label-mac-device = &wmac;
+	};
+};
+
+&ref {
+	clock-frequency = <25000000>;
+};
+
+&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>;
+
+			uboot: partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x020000>;
+				read-only;
+			};
+
+			partition@20000 {
+				compatible = "tplink,firmware";
+				label = "firmware";
+				reg = <0x020000 0x3d0000>;
+			};
+
+			art: partition@3f0000 {
+				label = "art";
+				reg = <0x3f0000 0x010000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&uart {
+	status = "okay";
+};
+
+&eth0 {
+	status = "okay";
+
+	phy-handle = <&swphy0>;
+
+	mtd-mac-address = <&uboot 0x1fc00>;
+
+	gmac-config {
+		device = <&gmac>;
+
+		switch-phy-swap = <1>;
+	};
+};
+
+&eth1 {
+	compatible = "syscon", "simple-mfd";
+};
+
+&wmac {
+	status = "okay";
+
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&uboot 0x1fc00>;
+};