ath79: add support for MikroTik RouterBOARD wAP-2nD (wAP)

The MikroTik RouterBOARD wAP-2nd (sold as wAP) is a small
2.4 GHz 802.11b/g/n PoE-capable AP.

Specifications:
 - SoC: Qualcomm Atheros QCA9533
 - Flash: 16 MB (SPI)
 - RAM: 64 MB
 - Ethernet: 1x 10/100 Mbps (PoE in)
 - WiFi: AR9531 2T2R 2.4 GHz (SoC)
 - 3x green LEDs (1x lan, 1x wlan, 1x user)

 See https://mikrotik.com/product/RBwAP2nD for more info.

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

Note: following 781d4bfb397cdd12ee0151eb66c577f470e3377d
 The network setup avoids using the integrated switch and connects the
 single Ethernet port directly. This way, link speed (10/100 Mbps) is
 properly reported by eth0.

Signed-off-by: David Musil <0x444d@protonmail.com>
(cherry picked from commit e20de224427008e0f26161f924bc347d974fd15a)

1 files changed, 58 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/qca9533_mikrotik_routerboard-wap-2nd.dts b/target/linux/ath79/dts/qca9533_mikrotik_routerboard-wap-2nd.dts
new file mode 100644
index 0000000000..807941c608
--- /dev/null
+++ b/target/linux/ath79/dts/qca9533_mikrotik_routerboard-wap-2nd.dts
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "qca9533_mikrotik_routerboard-16m.dtsi"
+
+/ {
+	compatible = "mikrotik,routerboard-wap-2nd", "qca,qca9533";
+	model = "MikroTik RouterBOARD wAP-2nD (wAP)";
+
+	aliases {
+		led-boot = &led_user;
+		led-failsafe = &led_user;
+		led-running = &led_user;
+		led-upgrade = &led_user;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&led_lan_pin>;
+
+		lan {
+			label = "green:lan";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan {
+			label = "green:wlan";
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		led_user: user {
+			label = "green:user";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	phy-handle = <&swphy0>;
+
+	gmac-config {
+		device = <&gmac>;
+		switch-phy-swap = <1>;
+	};
+};
+
+&eth1 {
+	compatible = "syscon", "simple-mfd";
+};
+
+&pinmux {
+	led_lan_pin: pinmux_led_lan_pin {
+		pinctrl-single,bits = <0x4 0x0 0xff>;
+	};
+};