ath79: Add support for Ubiquiti NanoBeam AC Gen1 XC

The Ubiquiti NanoBeam AC Gen1 XC (NBE-5AC-19) is an outdoor 802.11ac CPE
with a waterproof casing (ultrasonically welded) and bulb shaped.

Hardware:
 - SoC: Qualcomm Atheros QCA9558
 - RAM: 128 MB DDR2
 - Flash: 16 MB SPI NOR
 - Ethernet: 1x GbE, AR8033 phy connected via SGMII
 - PSU: 24 Vdc passive PoE
 - WiFi 5 GHz: Qualcomm Atheros QCA988X
 - Buttons: 1x reset
 - LEDs: 1x power, 1x Ethernet, 4x RSSI, all blue
 - Internal antenna: 19 dBi planar

Installation from stock airOS firmware:
 - Follow instructions for XC-type Ubiquiti devices on OpenWrt wiki at
   https://openwrt.org/toh/ubiquiti/common

Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>

1 files changed, 111 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/qca9558_ubnt_nanobeam-ac-xc.dts b/target/linux/ath79/dts/qca9558_ubnt_nanobeam-ac-xc.dts
new file mode 100644
index 0000000000..14388079b6
--- /dev/null
+++ b/target/linux/ath79/dts/qca9558_ubnt_nanobeam-ac-xc.dts
@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Device Tree file for Ubiquiti Nanobeam NBE-5AC-19 (XC)
+ *
+ * Copyright (C) 2022 Daniel González Cabanelas <dgcbueu@gmail.com>
+ * based on device tree from qca9558_ubnt_powerbeam-5ac-500.dts
+ */
+ 
+#include "qca955x_ubnt_xc.dtsi"
+
+/ {
+	compatible = "ubnt,nanobeam-ac-xc", "ubnt,xc", "qca,qca9558";
+	model = "Ubiquiti NanoBeam AC Gen1 (XC)";
+
+	aliases {
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "Reset button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	led_spi {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		sck-gpios  = <&gpio 0 GPIO_ACTIVE_HIGH>;
+		mosi-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
+		cs-gpios   = <&gpio 3 GPIO_ACTIVE_HIGH>;
+		num-chipselects = <1>;
+
+		led_gpio: led_gpio@0 {
+			compatible = "fairchild,74hc595";
+			reg = <0>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			registers-number = <1>;
+			spi-max-frequency = <10000000>;
+			enable-gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		rssi0 {
+			label = "blue:rssi0";
+			gpios = <&led_gpio 0 GPIO_ACTIVE_LOW>;
+		};
+		rssi1 {
+			label = "blue:rssi1";
+			gpios = <&led_gpio 1 GPIO_ACTIVE_LOW>;
+		};
+		rssi2 {
+			label = "blue:rssi2";
+			gpios = <&led_gpio 2 GPIO_ACTIVE_LOW>;
+		};
+		rssi3 {
+			label = "blue:rssi3";
+			gpios = <&led_gpio 3 GPIO_ACTIVE_LOW>;
+		};
+		led_power: power {
+			label = "blue:power";
+			gpios = <&led_gpio 4 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+	};
+};
+
+&mdio0 {
+	status = "okay";
+
+	phy-mask = <4>;
+	phy4: ethernet-phy@4 {
+		phy-mode = "sgmii";
+		reg = <4>;
+		at803x-override-sgmii-link-check;
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	pll-reg = <0 0x48 0>;
+	pll-data = <0x03000000 0x00000101 0x00001313>;
+	nvmem-cells = <&macaddr_art_0>;
+	nvmem-cell-names = "mac-address";
+	phy-mode = "sgmii";
+	phy-handle = <&phy4>;
+};
+
+&art {
+	compatible = "nvmem-cells";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	macaddr_art_0: macaddr@0 {
+		reg = <0x0 0x6>;
+	};
+};