ath79: add support for Devolo WiFi Pro 1750e

Hardware
--------
CPU:   Qualcomm Atheros QCA9558
RAM:   128M DDR2
FLASH: 16MiB
ETH:   1x Atheros AR8035 (PoE in)
       1x Atheros AR8033
WiFi2: QCA9558 3T3R (SiGE SE2565T 2.4 GHz power amp x3)
WiFi5: QCA9880 3T3R (Skyworks 5003L1 5 GHz power amp x3)
BTN:   1x Reset
       1x WPS
       1x USB eject
LED:   1x LED blue
       1x LED red
BEEP:  1x GPIO attached piezo beeper
UART:  3.3V GND TX RX (115200-N-8) (3.3V is pin closest to rear ports)
       Dupont 4 pin header
       Rear RJ45 serial port non-functional
USB:   1x v2.0

Installation
------------
Make sure you set a password for the root user as prompted on first
setup!

1. Upload OpenWRT sysupgrade image via SSH to the device.
Use /tmp as the destination folder on the device.
User is root, password previously set in the web interface.

2. Install OpenWRT with

> sysupgrade -n -F /tmp/<openwrt-image-name>

Signed-off-by: Django Armstrong <iamdjango@hotmail.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/qca9558_devolo_dvl1750e.dts b/target/linux/ath79/dts/qca9558_devolo_dvl1750e.dts
new file mode 100644
index 0000000000..2570eb7cea
--- /dev/null
+++ b/target/linux/ath79/dts/qca9558_devolo_dvl1750e.dts
@@ -0,0 +1,83 @@
+// 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 "qca9558_devolo_dvl1xxx.dtsi"
+
+/ {
+	compatible = "devolo,dvl1750e", "qca,qca9557";
+	model = "devolo WiFi pro 1750e";
+
+	aliases {
+		led-boot = &status_blue;
+		led-failsafe = &status_red;
+		led-running = &status_blue;
+		led-upgrade = &status_red;
+	};
+
+	keys {
+		wps {
+			label = "WPS Button";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		usb_eject {
+			label = "USB Eject Button";
+			linux,code = <BTN_0>;
+			linux,input-type = <EV_SW>;
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		status_blue: status_blue {
+			label = "dvl1750e:blue:status";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		status_red: status_red {
+			label = "dvl1750e:red:status";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	beeper {
+		compatible = "gpio-beeper";
+		gpios = <&gpio 4 GPIO_ACTIVE_HIGH>;
+	};
+
+
+	gpio_export {
+		compatible = "gpio-export";
+
+		gpio_usb_power {
+			gpio-export,name = "devolo:power:usb";
+			gpio-export,output = <1>;
+			gpios = <&gpio 11 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&usb_phy0 {
+	status = "okay";
+};
+
+&usb0 {
+	status = "okay";
+};
+
+&mdio1 {
+	status = "okay";
+};
+
+&eth1 {
+	status = "okay";
+};