ath79: add support for Mikrotik LHG 5

The MikroTik LHG 5 series (product codes RBLHG-5nD, RBLHG-5HPnD and
RBLHG-5HPnD-XL) devices are an outdoor 5GHz CPE with a 24.5dBi or 27dBi
integrated antenna built around the Atheros AR9344 SoC.
It is very similar to the SXT Lite5 series which this patch is based
upon.

Specifications:
 - SoC: Atheros AR9344
 - RAM: 64 MB
 - Storage: 16 MB SPI NOR
 - Wireless: Atheros AR9340 (SoC) 802.11a/n 2x2:2
 - Ethernet: Atheros AR8229 switch (SoC), 1x 10/100 port,
    8-32 Vdc PoE in
 - 8 user-controllable LEDs:
  - 1x power (blue)
  - 1x user (white)
  - 1x ethernet (green)
  - 5x rssi (green)

 See https://mikrotik.com/product/RBLHG-5nD for more details.

Notes:
 The device was already supported in the ar71xx target.

Flashing:
 TFTP boot initramfs image and then perform a sysupgrade. Follow common
 MikroTik procedure as in https://openwrt.org/toh/mikrotik/common.

Signed-off-by: Jakob (Jack/XDjackieXD) <jakob@chaosfield.at>

1 files changed, 65 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar9344_mikrotik_routerboard-16m-nor.dtsi b/target/linux/ath79/dts/ar9344_mikrotik_routerboard-16m-nor.dtsi
new file mode 100644
index 0000000000..4bf0731b1a
--- /dev/null
+++ b/target/linux/ath79/dts/ar9344_mikrotik_routerboard-16m-nor.dtsi
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "ar9344.dtsi"
+
+&spi {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <40000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "RouterBoot";
+				reg = <0x0 0x20000>;
+				read-only;
+				compatible = "mikrotik,routerboot-partitions";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				partition@0 {
+					label = "bootloader1";
+					reg = <0x0 0x0>;
+					read-only;
+				};
+
+				hard_config: hard_config {
+					read-only;
+				};
+
+				bios {
+					size = <0x1000>;
+					read-only;
+				};
+
+				partition@10000 {
+					label = "bootloader2";
+					reg = <0x10000 0x0>;
+					read-only;
+				};
+
+				soft_config {
+					label = "soft_config";
+				};
+			};
+
+			partition@20000 {
+				compatible = "mikrotik,minor";
+				label = "firmware";
+				reg = <0x020000 0xfe0000>;
+			};
+		};
+	};
+};
+
+&wmac {
+	status = "okay";
+
+	qca,no-eeprom;
+};