mediatek: add support for the GL.iNet GL-MT3000

The MT-3000 is a pocket-sized Wi-Fi 6 router based on MediaTek MT7981.

Specification:
 - SoC: MediaTek MT7981B
 - CPU: 2x 1.3 GHz Cortex-A53
 - Flash: 256 MiB Macronix SPI NAND
 - RAM: 512 MiB Nanya DDR4
 - WLAN: 2.4 GHz, 5 GHz (MediaTek MT7976CN)
 - Ethernet:
    - 1x 10/100/1000 Mbps built-in PHY (LAN)
    - 1x 10/100/1000/2500 Mbps MaxLinear GPY211 PHY (WAN)
 - USB 3.0 port
 - Buttons: 1 button, 1 switch
 - LEDs: 1x light-blue, 1x warm-white
 - Serial console: internal 4-pin header, 115200 8n1
 - PWM controlled fan with tacho
 - Power: 5 VDC, 3 A (USB Type-C)

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

1 files changed, 240 insertions, 0 deletions

diff --git a/target/linux/mediatek/dts/mt7981b-glinet-gl-mt3000.dts b/target/linux/mediatek/dts/mt7981b-glinet-gl-mt3000.dts
new file mode 100644
index 0000000000..d916ee49ef
--- /dev/null
+++ b/target/linux/mediatek/dts/mt7981b-glinet-gl-mt3000.dts
@@ -0,0 +1,240 @@
+/dts-v1/;
+
+#include "mt7981.dtsi"
+
+/ {
+	model = "GL.iNet GL-MT3000";
+	compatible = "glinet,gl-mt3000", "mediatek,mt7981";
+
+	aliases {
+		led-boot = &led_lightblue;
+		led-failsafe = &led_lightblue;
+		led-running = &led_white;
+		led-upgrade = &led_lightblue;
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&pio 1 GPIO_ACTIVE_LOW>;
+		};
+
+		mode {
+			label = "mode";
+			linux,input-type = <EV_SW>;
+			linux,code = <BTN_0>;
+			gpios = <&pio 0 GPIO_ACTIVE_HIGH>;
+			debounce-interval = <60>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_lightblue: led@0 {
+			label = "blue:run";
+			gpios = <&pio 31 GPIO_ACTIVE_LOW>;
+		};
+
+		led_white: led@1 {
+			label = "white:system";
+			gpios = <&pio 30 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	fan_5v: regulator-fan-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "fan";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&pio 28 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-boot-on;
+	};
+
+	usb_vbus: regulator-usb-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb_vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&pio 12 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-boot-on;
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&watchdog {
+	status = "okay";
+};
+
+&eth {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mdio_pins>;
+
+	status = "okay";
+
+	gmac0: mac@0 {
+		compatible = "mediatek,eth-mac";
+		reg = <0>;
+		phy-mode = "2500base-x";
+		phy-handle = <&phy0>;
+		nvmem-cells = <&macaddr>;
+		nvmem-cell-names = "mac-address";
+	};
+
+	gmac1: mac@1 {
+		compatible = "mediatek,eth-mac";
+		reg = <1>;
+		phy-mode = "gmii";
+		phy-handle = <&int_gbe_phy>;
+		nvmem-cells = <&macaddr>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <1>;
+	};
+};
+
+&mdio_bus {
+	reset-gpios = <&pio 14 GPIO_ACTIVE_LOW>;
+	reset-delay-us = <600>;
+	reset-post-delay-us = <20000>;
+
+	phy0: ethernet-phy@5 {
+		reg = <5>;
+		compatible = "ethernet-phy-ieee802.3-c45";
+		phy-mode = "2500base-x";
+	};
+};
+
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_pins>;
+
+	status = "okay";
+};
+
+&fan {
+	pwms = <&pwm 0 40000 0>;
+	fan-supply = <&fan_5v>;
+	interrupt-parent = <&pio>;
+	interrupts = <29 IRQ_TYPE_EDGE_RISING>;
+	status = "okay";
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_flash_pins>;
+	status = "okay";
+
+	spi_nand: flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-nand";
+		reg = <0>;
+		spi-max-frequency = <52000000>;
+
+		spi-cal-enable;
+		spi-cal-mode = "read-data";
+		spi-cal-datalen = <7>;
+		spi-cal-data = /bits/ 8 <0x53 0x50 0x49 0x4E 0x41 0x4E 0x44>;
+		spi-cal-addrlen = <5>;
+		spi-cal-addr = /bits/ 32 <0x0 0x0 0x0 0x0 0x0>;
+
+		spi-tx-buswidth = <4>;
+		spi-rx-buswidth = <4>;
+		mediatek,nmbm;
+		mediatek,bmt-max-ratio = <1>;
+		mediatek,bmt-max-reserved-blocks = <64>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "BL2";
+				reg = <0x00000 0x0100000>;
+				read-only;
+			};
+
+			partition@100000 {
+				label = "u-boot-env";
+				reg = <0x0100000 0x0080000>;
+			};
+
+			factory: partition@180000 {
+				label = "Factory";
+				reg = <0x180000 0x0200000>;
+				read-only;
+
+				compatible = "nvmem-cells";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				macaddr: macaddr@a {
+					reg = <0xa 0x6>;
+				};
+			};
+
+			partition@380000 {
+				label = "FIP";
+				reg = <0x380000 0x0200000>;
+				read-only;
+			};
+
+			partition@580000 {
+				label = "log";
+				reg = <0x580000 0x0040000>;
+			};
+
+			partition@5c0000 {
+				label = "ubi";
+				reg = <0x5c0000 0xf640000>;
+				compatible = "linux,ubi";
+			};
+		};
+	};
+};
+
+&pio {
+	spi0_flash_pins: spi0-pins {
+		mux {
+			function = "spi";
+			groups = "spi0", "spi0_wp_hold";
+		};
+	};
+
+	pwm_pins: pwm0-pins {
+		mux {
+			function = "pwm";
+			groups = "pwm0_1";
+		};
+	};
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&xhci {
+	vbus-supply = <&usb_vbus>;
+
+	status = "okay";
+};
+
+&wifi {
+	mediatek,mtd-eeprom = <&factory 0x0>;
+
+	status = "okay";
+};