ath79: add support for TP-Link RE350K v1

TP-Link RE350K v1 (FCC ID: TE7RE350K) is a wall-plug AC1200 Wi-Fi range
extender with 'Kasa Smart' support. Device is based on Qualcomm/Atheros
QCA9558 + QCA9882 + AR8035 platform and is available only on US market.

Specification:

- 720/600/200 MHz (CPU/DDR/AHB)
- 128 MB of RAM (DDR2)
- 16 MB of flash (SPI NOR)
- 1x 1 Gbps Ethernet (AR8035)
- 2T2R 2.4 GHz (QCA9558), with ext. PA (SE2565T) and LNA (SKY65971-11)
- 2T2R 5 GHz (QCA9882), with ext. PA (SE5003L1-R) and LNA (SKY65981-11)
- 2x U.FL connector on PCB
- 2x dual-band PCB antennas
- 1x LED, 2x dual-color LED (all driven by GPIO)
- 3x button (app config, led, reset)
- 1x mechanical on/off slide switch
- 1x UART (4-pin, 2.54 mm pitch) header on PCB
- 1x JTAG (8-pin, 1.27 mm pitch) header on PCB

Flash instruction:
Use 'factory' image directly in vendor GUI (default IP: 192.168.0.254,
default credentials: admin/admin).

Warning:
This device does not include any kind of recovery mechanism in U-Boot.

Vendor firmware access:
You can access vendor firmware over serial (RX line requires jumper
resistor in R306 place, near XTAL) with: root/sohoadmin credentials.

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>

1 files changed, 173 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/qca9558_tplink_re350k-v1.dts b/target/linux/ath79/dts/qca9558_tplink_re350k-v1.dts
new file mode 100644
index 0000000000..056b513d7e
--- /dev/null
+++ b/target/linux/ath79/dts/qca9558_tplink_re350k-v1.dts
@@ -0,0 +1,173 @@
+// 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 "qca9557.dtsi"
+
+/ {
+	model = "TP-Link RE350K v1";
+	compatible = "tplink,re350k-v1", "qca,qca9558";
+
+	aliases {
+		led-boot = &power;
+		led-failsafe = &power;
+		led-running = &power;
+		led-upgrade = &power;
+		mdio-gpio0 = &mdio2;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		app-config {
+			label = "app-config";
+			linux,code = <BTN_0>;
+			gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		led {
+			label = "led";
+			linux,code = <BTN_1>;
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power: power {
+			label = "tp-link:green:power";
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		wlan2g-green {
+			label = "tp-link:green:wlan2g";
+			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+
+		wlan2g-red {
+			label = "tp-link:red:wlan2g";
+			gpios = <&gpio 21 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan5g-green {
+			label = "tp-link:green:wlan5g";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		wlan5g-red {
+			label = "tp-link:red:wlan5g";
+			gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	mdio2: mdio {
+		compatible = "virtual,mdio-gpio";
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		gpios = <&gpio 23 GPIO_ACTIVE_HIGH>,
+			<&gpio 18 GPIO_ACTIVE_HIGH>;
+
+		phy0: ethernet-phy@4 {
+			reg = <4>;
+
+			phy-mode = "rgmii-rxid";
+			at803x-disable-smarteee;
+		};
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	mtd-mac-address = <&config 0x10008>;
+	pll-data = <0x9e000000 0x80000101 0x80001313>;
+	phy-handle = <&phy0>;
+
+	gmac-config {
+		device = <&gmac>;
+
+		rxdv-delay = <2>;
+		rxd-delay = <2>;
+		txen-delay = <0>;
+		txd-delay = <0>;
+		rgmii-enabled = <1>;
+	};
+};
+
+&pcie0 {
+	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 {
+				compatible = "tplink,firmware";
+				label = "firmware";
+				reg = <0x020000 0xd70000>;
+			};
+
+			config: partition@d90000 {
+				label = "config";
+				reg = <0xd90000 0x260000>;
+				read-only;
+			};
+
+			art: partition@ff0000 {
+				label = "art";
+				reg = <0xff0000 0x010000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&uart {
+	status = "okay";
+};
+
+&wmac {
+	status = "okay";
+
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&config 0x10008>;
+};