ath79: add support for MikroTik RouterBOARD 922UAGS-5HPacD

This patch ports support for the MikroTik RouterBOARD 922UAGS-5HPacD
with a built-in 802.11ac High-Power radio (31dBm), which was already
available in the ar71xx target.

See https://mikrotik.com/product/RB922UAGS-5HPacD for more info.

Specifications:
- SoC: Qualcomm Atheros QCA9558 (720 MHz)
- RAM: 128 MB
- Storage: 128 MB NAND
- Wireless: external QCA9882 802.11a/ac 2x2:2
- Ethernet: 1x 1000/100/10 Mbps, integrated, via AR8031 PHY, passive PoE-in 24V
- SFP: 1x host
- USB: 1x 2.0 type A
- PCIe: 1x Mini slot (also contains USB 2.0 for 3G/LTE modems)
- SIM slot: 1x mini-SIM

Working:
- Board/system detection
- SPI and NAND storage
- PCIe
- USB type A host
- Wireless
- Ethernet
- LEDs (user, phy0)
- Reset button
- Sysupgrade to/from ar71xx

Not supported:
- RSSI LEDs
- SFP cage

Installation methods:
- Sysupgrade from ar71xx (it is advisable to use the -n option to
wipe any previous settings), or
- Boot the initramfs image via TFTP and then flash the sysupgrade
image using "sysupgrade -n"

Signed-off-by: Roger Pueyo Centelles <roger.pueyo@guifi.net>

1 files changed, 187 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/qca9558_mikrotik_routerboard-922uags-5hpacd.dts b/target/linux/ath79/dts/qca9558_mikrotik_routerboard-922uags-5hpacd.dts
new file mode 100644
index 0000000000..26a18ad6a7
--- /dev/null
+++ b/target/linux/ath79/dts/qca9558_mikrotik_routerboard-922uags-5hpacd.dts
@@ -0,0 +1,187 @@
+// 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"
+
+/ {
+	compatible = "mikrotik,routerboard-922uags-5hpacd", "qca,qca9558";
+	model = "MikroTik RouterBOARD 922UAGS-5HPacD";
+
+	aliases {
+		label-mac-device = &eth0;
+		led-boot = &led_user;
+		led-failsafe = &led_user;
+		led-upgrade = &led_user;
+		serial0 = &uart;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_user: user {
+			label = "mikrotik:green:user";
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	ath10k-leds {
+		compatible = "gpio-leds";
+
+		wlan5g {
+			label = "mikrotik:green:wlan5g";
+			gpios = <&ath10k 0 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	gpio-export {
+		compatible = "gpio-export";
+
+		gpio_usb_power {
+			gpio-export,name = "mikrotik:power:usb";
+			gpio-export,output = <0>;
+			gpios = <&gpio 13 GPIO_ACTIVE_HIGH>;
+		};
+
+		gpio_nand_power {
+			gpio-export,name = "mikrotik:power:nand";
+			gpio-export,output = <0>;
+			gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&mdio0 {
+	status = "okay";
+
+	phy4: ethernet-phy@4 {
+		reg = <4>;
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	mtd-mac-address = <&art 0x10>;
+	phy-handle = <&phy4>;
+	pll-data = <0x8f000000 0xa0000101 0xa0001313>;
+
+	gmac-config {
+		device = <&gmac>;
+		rgmii-enabled = <1>;
+	};
+};
+
+&spi {
+	status = "okay";
+
+	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 = "routerboot";
+				reg = <0x0000000 0x000c000>;
+				read-only;
+			};
+
+			art: partition@c000 {
+				label = "art";
+				reg = <0x000c000 0x0001000>;
+				read-only;
+			};
+
+			partition@d000 {
+				label = "bios";
+				reg = <0x000d000 0x0001000>;
+				read-only;
+			};
+
+			partition@e000 {
+				label = "soft_config";
+				reg = <0x000e000 0x0001000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&nand {
+	status = "okay";
+
+	nand-ecc-mode = "soft";
+	qca,nand-swap-dma;
+	qca,nand-scan-fixup;
+
+	partitions {
+		compatible = "fixed-partitions";
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "booter";
+			reg = <0x0000000 0x0040000>;
+			read-only;
+		};
+
+		partition@40000 {
+			label = "kernel";
+			reg = <0x0040000 0x03c0000>;
+		};
+
+		partition@400000 {
+			label = "ubi";
+			reg = <0x0400000 0x7c00000>;
+		};
+	};
+};
+
+&uart {
+	status = "okay";
+};
+
+&pcie0 {
+	status = "okay";
+
+	ath10k: wifi@0,0 {
+		compatible = "qcom,ath10k";
+		reg = <0 0 0 0 0>;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+};
+
+&pcie1 {
+	status = "okay";
+};
+
+&usb0 {
+	status = "okay";
+};
+
+&usb_phy0 {
+	status = "okay";
+};