ath79: add support for MikroTik RB951Ui-2HnD

MikroTik RB951Ui-2HnD is a wireless SOHO router that was previously
supported by the ar71xx target, see commit d19b868b12 ("ar71xx: Add
support for MikroTik RB951Ui-2HnD").

Specifications
--------------

  - SoC: Atheros AR9344 (600 MHz)
  - RAM: 128 MB (2x 64 MB)
  - Storage: 128 MB NAND flash (various manufacturers)
  - Ethernet: Atheros AR8229 switch, 5x 10/100 Mbit/s
      - 1x PoE in (port 1, 8-30 V input)
      - 1x PoE out (port 5, 500 mA output)
  - Wireless: Atheros AR9340 (802.11b/g/n)
  - USB: 2.0 (1A)
  - 9x LED:
      - 1x power (green, not configurable)
      - 1x user (green)
      - 5x FE ports (green)
      - 1x wireless (green)
      - 1x PoE out (red)
  - 1x button (restart)

See https://mikrotik.com/product/RB951Ui-2HnD for more details.

Flashing
--------

TFTP boot initramfs image and then perform sysupgrade.  Follow
common MikroTik procedures at https://openwrt.org/toh/mikrotik/common.

Signed-off-by: Michał Kępień <openwrt@kempniu.pl>

1 files changed, 153 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar9344_mikrotik_routerboard-951ui-2hnd.dts b/target/linux/ath79/dts/ar9344_mikrotik_routerboard-951ui-2hnd.dts
new file mode 100644
index 0000000000..3d59a30f11
--- /dev/null
+++ b/target/linux/ath79/dts/ar9344_mikrotik_routerboard-951ui-2hnd.dts
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "ar9344_mikrotik_routerboard.dtsi"
+
+/ {
+	compatible = "mikrotik,routerboard-951ui-2hnd", "qca,ar9344";
+	model = "Mikrotik RouterBOARD 951Ui-2HnD";
+
+	/delete-node/ leds;
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_user: user {
+			label = "green:user";
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+		};
+
+		port1 {
+			label = "green:port1";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+		};
+
+		port2 {
+			label = "green:port2";
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+		};
+
+		port3 {
+			label = "green:port3";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+		};
+
+		port4 {
+			label = "green:port4";
+			gpios = <&gpio 21 GPIO_ACTIVE_LOW>;
+		};
+
+		port5 {
+			label = "green:port5";
+			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-export {
+		compatible = "gpio-export";
+
+		gpio_poe_power {
+			gpio-export,name = "rb951ui2hnd:power:poe";
+			gpio-export,output = <1>;
+			gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
+		};
+
+		gpio_usb_power {
+			gpio-export,name = "rb951ui2hnd:power:usb";
+			gpio-export,output = <1>;
+			gpios = <&gpio 20 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&gpio {
+	nand_power {
+		gpio-hog;
+		gpios = <14 GPIO_ACTIVE_LOW>;
+		output-high;
+	};
+};
+
+&nand {
+	status = "okay";
+
+	nand-ecc-mode = "soft";
+	qca,nand-swap-dma;
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#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>;
+		};
+	};
+};
+
+&spi {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "mikrotik,routerboot-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "routerboot";
+				reg = <0x0 0x0>;
+				read-only;
+			};
+
+			hard_config: hard_config {
+				read-only;
+			};
+
+			bios {
+				size = <0x1000>;
+				read-only;
+			};
+
+			soft_config {
+			};
+		};
+	};
+};
+
+&eth0 {
+	phy-handle = <&swphy4>;
+
+	/delete-node/ gmac-config;
+};
+
+&eth1 {
+	compatible = "qca,ar9340-eth", "syscon";
+};
+
+&wmac {
+	qca,led-pin = /bits/ 8 <11>;
+};
+
+&usb {
+	status = "okay";
+};
+
+&usb_phy {
+	status = "okay";
+};