ath79: Support for Ubiquiti Rocket 5AC Lite

The Ubiquiti Rocket 5AC Lite (R5AC-Lite) is an outdoor router.

Specifications:
 - SoC: Qualcomm Atheros QCA9558
 - RAM: 128 MB
 - Flash: 16 MB SPI
 - Ethernet: 1x 10/100/1000 Mbps
 - WiFi 5 GHz: QCA988x
 - Buttons: 1x (reset)
 - LEDs: 1x power, 1x Ethernet, 4x RSSI

Installation:
- Instructions for XC-type Ubiquiti:
  https://openwrt.org/toh/ubiquiti/common

Signed-off-by: Nick Hainke <vincent@systemli.org>

target/linux/ath79/dts/qca9558_ubnt_rocket-5ac-lite.dts

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "qca955x_ubnt_xc.dtsi"
+
+/ {
+	compatible = "ubnt,rocket-5ac-lite", "ubnt,xc", "qca,qca9558";
+	model = "Ubiquiti Rocket 5AC Lite";
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "Reset button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+};
+
+&mdio0 {
+	status = "okay";
+
+	phy-mask = <4>;
+	phy4: ethernet-phy@4 {
+		phy-mode = "sgmii";
+		reg = <4>;
+		at803x-override-sgmii-link-check;
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	mtd-mac-address = <&art 0x0>;
+	phy-mode = "sgmii";
+	phy-handle = <&phy4>;
+};

target/linux/ath79/generic/base-files/etc/board.d/02_network

@@ -86,6 +86,7 @@ ath79_setup_interfaces()
 	ubnt,powerbeam-5ac-500|\
 	ubnt,powerbeam-5ac-gen2|\
 	ubnt,powerbridge-m|\
+	ubnt,rocket-5ac-lite|\
 	ubnt,rocket-m|\
 	ubnt,unifiac-lite|\
 	ubnt,unifiac-lr|\

target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/11-ath10k-caldata

@@ -43,6 +43,7 @@ case "$FIRMWARE" in
 	ubnt,nanostation-ac-loco|\
 	ubnt,powerbeam-5ac-500|\
 	ubnt,powerbeam-5ac-gen2|\
+	ubnt,rocket-5ac-lite|\
 	ubnt,unifiac-pro|\
 	yuncore,a770)
 		caldata_extract "art" 0x5000 0x844

target/linux/ath79/image/generic-ubnt.mk

@@ -337,6 +337,15 @@ define Device/ubnt_powerbridge-m
 endef
 TARGET_DEVICES += ubnt_powerbridge-m
 
+define Device/ubnt_rocket-5ac-lite
+  $(Device/ubnt-xc)
+  SOC := qca9558
+  DEVICE_MODEL := Rocket 5AC
+  DEVICE_VARIANT := Lite
+  DEVICE_PACKAGES := kmod-ath10k-ct ath10k-firmware-qca988x-ct
+endef
+TARGET_DEVICES += ubnt_rocket-5ac-lite
+
 define Device/ubnt_rocket-m
   $(Device/ubnt-xm)
   SOC := ar7241