ath79: add support for GL-iNet GL-X750

this patch adds supports for GL-X750.

Specification:
- SOC: QCA9531 (650MHz)
- Flash: 16 MiB (W25Q128FVSG)
- RAM: 128 MiB DDR2
- Ethernet: 10/100: 1xLAN + 10/100: 1xWAN
- Wireless: 2.4GHz (bgn) and 5GHz (ac)
- USB: 1x USB 2.0 port
- Button: 1x reset button
- LED: 5x LEDS (green)

Flash instruction:
The original firmware is openwrt, so both LuCI or sysupgrade can be used.

Signed-off-by: Luo chongjun <luochongjun@gl-inet.com>

2 files changed, 141 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/qca9533_glinet_x750.dts b/target/linux/ath79/dts/qca9533_glinet_x750.dts
new file mode 100644
index 0000000000..7313f96d51
--- /dev/null
+++ b/target/linux/ath79/dts/qca9533_glinet_x750.dts
@@ -0,0 +1,46 @@
+// 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 "qca9533_glinet_x750.dtsi"
+
+&spi {
+	status = "okay";
+	num-cs = <0>;
+
+	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 = "u-boot";
+				reg = <0x000000 0x040000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "u-boot-env";
+				reg = <0x040000 0x010000>;
+			};
+
+                        art: partition@50000 {
+                                label = "art";
+                                reg = <0x050000 0x010000>;
+                        };
+
+			partition@60000 {
+				label = "firmware";
+				reg = <0x060000 0xfa0000>;
+			};
+
+		};
+	};
+};
diff --git a/target/linux/ath79/dts/qca9533_glinet_x750.dtsi b/target/linux/ath79/dts/qca9533_glinet_x750.dtsi
new file mode 100644
index 0000000000..b84c332137
--- /dev/null
+++ b/target/linux/ath79/dts/qca9533_glinet_x750.dtsi
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include "qca9533.dtsi"
+
+/ {
+	compatible = "glinet,x750", "qca,qca9533";
+	model = "GL.iNet GL-X750";
+
+	keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <20>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&jtag_disable_pins>;
+
+		button0 {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+		};
+
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		power {
+			label = "gl-x750:green:power";
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		wlan2g {
+			label = "gl-x750:green:wlan2g";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+
+		wlan5g {
+			label = "gl-x750:green:wlan5g";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		wan {
+			label = "gl-x750:green:wan";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+		4g {
+			label = "gl-x750:green:4g";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+	};
+};
+
+&pcie0 {
+	status = "okay";
+};
+
+&uart {
+	status = "okay";
+};
+
+&usb0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hub_port: port@1 {
+		reg = <1>;
+		#trigger-source-cells = <0>;
+	};
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&eth0 {
+	status = "okay";
+	mtd-mac-address = <&art 0x0>;
+	phy-handle = <&swphy4>;
+};
+
+&eth1 {
+	mtd-mac-address = <&art 0x6>;
+};
+
+&wmac {
+	status = "okay";
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&art 0x1002>;
+};