mediatek: mt7622: add support for ELECOM WRC-X3200GST3

ELECOM WRC-X3200GST3 is a 2.4/5 GHz band 11ax (Wi-Fi 6) router, based on
MT7622B.

Specifications:

- SoC		: MediaTek MT7622B
- RAM		: DDR3 512 MiB (Nanya NT5CC256M16ER-EK)
- Flash		: SPI-NAND 128 MiB (Winbond W25N01GVZEIG)
- WLAN		: 2.4/5 GHz 4T4R
  - 2.4 GHz	: MediaTek MT7622B (SoC)
  - 5 GHz	: MediaTek MT7915A
- Ethernet	: 5x 10/100/1000 Mbps
  - Switch	: MediaTek MT7531
- LEDs/Keys	: 6x/4x (2x buttons, 1x slide-switch)
- UART		: through-hole on PCB
  - J19: 3.3V, GND, TX, RX from power jack side
  - 115200n8
- Power		: 12 VDC, 1.5 A

Flash instruction using factory image:

1. Boot WRC-X3200GST3 normally with "Router" mode
2. Access to "http://192.168.2.1/" and open firmware update page
   ("ファームウェア更新")
3. Select the OpenWrt factory image and click apply ("適用") button
4. Wait ~120 seconds to complete flashing

MAC Addresses:

LAN    : 04:AB:18:xx:xx:77 (Factory, 0x7FFF4 (hex))
WAN    : 04:AB:18:xx:xx:78 (Factory, 0x7FFFA (hex))
2.4 GHz: 04:AB:18:xx:xx:79 (Factory, 0x4     (hex))
5 GHz  : 04:AB:18:xx:xx:7A (none)

Note:

- currently, there is no "phy1tpt" trigger for 5 GHz wlan (MT7915) in
  "trigger" file of LEDs, use "phy1radio" trigger instead

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>

1 files changed, 436 insertions, 0 deletions

diff --git a/target/linux/mediatek/dts/mt7622-elecom-wrc-x3200gst3.dts b/target/linux/mediatek/dts/mt7622-elecom-wrc-x3200gst3.dts
new file mode 100644
index 0000000000..fdbcbc18bc
--- /dev/null
+++ b/target/linux/mediatek/dts/mt7622-elecom-wrc-x3200gst3.dts
@@ -0,0 +1,436 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+
+#include "mt7622.dtsi"
+#include "mt6380.dtsi"
+
+/ {
+	model = "ELECOM WRC-X3200GST3";
+	compatible = "elecom,wrc-x3200gst3", "mediatek,mt7622";
+
+	aliases {
+		serial0 = &uart0;
+		led-boot = &led_power_green;
+		led-failsafe = &led_power_red;
+		led-running = &led_power_green;
+		led-upgrade = &led_power_green;
+		label-mac-device = &wan;
+	};
+
+	chosen {
+		bootargs = "earlycon=uart8250,mmio32,0x11002000 console=ttyS0,115200n8 swiotlb=512";
+	};
+
+	memory {
+		reg = <0 0x40000000 0 0x1f000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			label = "red:wps";
+			gpios = <&pio 47 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_WPS;
+		};
+
+		led_power_red: led-1 {
+			label = "red:power";
+			gpios = <&pio 48 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_POWER;
+			function-enumerator = <1>;
+		};
+
+		led_power_green: led-2 {
+			label = "green:power";
+			gpios = <&pio 49 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_POWER;
+			function-enumerator = <2>;
+		};
+
+		led-3 {
+			label = "blue:power";
+			gpios = <&pio 50 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_BLUE>;
+			function = LED_FUNCTION_POWER;
+			function-enumerator = <3>;
+		};
+
+		led-4 {
+			label = "white:wlan2g";
+			gpios = <&pio 85 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_WHITE>;
+			function = LED_FUNCTION_WLAN;
+			function-enumerator = <1>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		led-5 {
+			label = "white:wlan5g";
+			gpios = <&pio 89 GPIO_ACTIVE_HIGH>;
+			color = <LED_COLOR_ID_WHITE>;
+			function = LED_FUNCTION_WLAN;
+			function-enumerator = <2>;
+			linux,default-trigger = "phy1radio";
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&pio 0 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		ap {
+			label = "ap";
+			gpios = <&pio 42 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+			linux,input-type = <EV_SW>;
+		};
+
+		router {
+			label = "router";
+			gpios = <&pio 43 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_1>;
+			linux,input-type = <EV_SW>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&pio 102 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+};
+
+&cpu0 {
+	proc-supply = <&mt6380_vcpu_reg>;
+	sram-supply = <&mt6380_vm_reg>;
+};
+
+&cpu1 {
+	proc-supply = <&mt6380_vcpu_reg>;
+	sram-supply = <&mt6380_vm_reg>;
+};
+
+&pio {
+	eth_pins: eth-pins {
+		mux {
+			function = "eth";
+			groups = "mdc_mdio", "rgmii_via_gmac2";
+		};
+	};
+
+	pcie0_pins: pcie0-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie0_pad_perst",
+				 "pcie0_1_waken",
+				 "pcie0_1_clkreq";
+		};
+	};
+
+	pmic_bus_pins: pmic-bus-pins {
+		mux {
+			function = "pmic";
+			groups = "pmic_bus";
+		};
+	};
+
+	pwm7_pins: pwm1-2-pins {
+		mux {
+			function = "pwm";
+			groups = "pwm_ch7_2";
+		};
+	};
+
+	/* Serial NAND is shared pin with SPI-NOR */
+	serial_nand_pins: serial-nand-pins {
+		mux {
+			function = "flash";
+			groups = "snfi";
+		};
+
+		conf-cmd-data {
+			pins = "SPI_WP", "SPI_HOLD", "SPI_MOSI",
+			       "SPI_MISO", "SPI_CS";
+			drive-strength = <16>;
+			bias-pull-up;
+		};
+
+		conf-clk {
+			pins = "SPI_CLK";
+			drive-strength = <16>;
+			bias-pull-down;
+		};
+	};
+
+	uart0_pins: uart0-pins {
+		mux {
+			function = "uart";
+			groups = "uart0_0_tx_rx" ;
+		};
+	};
+
+	watchdog_pins: watchdog-pins {
+		mux {
+			function = "watchdog";
+			groups = "watchdog";
+		};
+	};
+};
+
+&eth {
+	pinctrl-names = "default";
+	pinctrl-0 = <&eth_pins>;
+	status = "okay";
+
+	gmac0: mac@0 {
+		compatible = "mediatek,eth-mac";
+		reg = <0>;
+
+		phy-connection-type = "2500base-x";
+
+		nvmem-cells = <&macaddr_factory_7fff4>;
+		nvmem-cell-names = "mac-address";
+
+		fixed-link {
+			speed = <2500>;
+			full-duplex;
+			pause;
+		};
+	};
+
+	mdio-bus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		switch@0 {
+			compatible = "mediatek,mt7531";
+			reg = <0>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			interrupt-parent = <&pio>;
+			interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;
+			reset-gpios = <&pio 54 GPIO_ACTIVE_HIGH>;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				wan: port@0 {
+					reg = <0>;
+					label = "wan";
+
+					nvmem-cells = <&macaddr_factory_7fffa>;
+					nvmem-cell-names = "mac-address";
+				};
+
+				port@1 {
+					reg = <1>;
+					label = "lan4";
+				};
+
+				port@2 {
+					reg = <2>;
+					label = "lan3";
+				};
+
+				port@3 {
+					reg = <3>;
+					label = "lan2";
+				};
+
+				port@4 {
+					reg = <4>;
+					label = "lan1";
+				};
+
+				port@6 {
+					reg = <6>;
+					label = "cpu";
+					ethernet = <&gmac0>;
+					phy-mode = "2500base-x";
+
+					fixed-link {
+						speed = <2500>;
+						full-duplex;
+						pause;
+					};
+				};
+			};
+		};
+	};
+};
+
+&bch {
+	status = "okay";
+};
+
+&snfi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&serial_nand_pins>;
+	status = "okay";
+
+	flash@0 {
+		compatible = "spi-nand";
+		reg = <0>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+		nand-ecc-engine = <&snfi>;
+		mediatek,bmt-v2;
+		mediatek,bmt-table-size = <0x1000>;
+		mediatek,bmt-remap-range = <0x0 0x8c0000>,
+					   <0x1bc0000 0x30c0000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "Preloader";
+				reg = <0x0 0x80000>;
+				read-only;
+			};
+
+			partition@80000 {
+				label = "ATF";
+				reg = <0x80000 0x40000>;
+				read-only;
+			};
+
+			partition@c0000 {
+				label = "u-boot";
+				reg = <0xc0000 0x80000>;
+				read-only;
+			};
+
+			partition@140000 {
+				label = "u-boot-env";
+				reg = <0x140000 0x80000>;
+				read-only;
+			};
+
+			factory: partition@1c0000 {
+				label = "factory";
+				reg = <0x1c0000 0x100000>;
+				read-only;
+
+				compatible = "nvmem-cells";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				macaddr_factory_4: macaddr@4 {
+					reg = <0x4 0x6>;
+				};
+
+				macaddr_factory_7fff4: macaddr@7fff4 {
+					reg = <0x7fff4 0x6>;
+				};
+
+				macaddr_factory_7fffa: macaddr@7fffa {
+					reg = <0x7fffa 0x6>;
+				};
+			};
+
+			partition@2c0000 {
+				label = "kernel";
+				reg = <0x2c0000 0x600000>;
+			};
+
+			partition@8c0000 {
+				label = "ubi";
+				reg = <0x8c0000 0x1300000>;
+			};
+
+			partition@1bc0000 {
+				label = "tm_pattern";
+				reg = <0x1bc0000 0x500000>;
+				read-only;
+			};
+
+			partition@20c0000 {
+				label = "tm_key";
+				reg = <0x20c0000 0x100000>;
+				read-only;
+			};
+
+			partition@21c0000 {
+				label = "user_data";
+				reg = <0x21c0000 0xf00000>;
+				read-only;
+			};
+
+			partition@30c0000 {
+				label = "reserved";
+				reg = <0x30c0000 0x4f40000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&pcie0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie0_pins>;
+	status = "okay";
+};
+
+&slot0 {
+	status = "okay";
+
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x5000>;
+		ieee80211-freq-limit = <5000000 6000000>;
+		nvmem-cells = <&macaddr_factory_4>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <1>;
+	};
+};
+
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm7_pins>;
+	status = "okay";
+};
+
+&pwrap {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pmic_bus_pins>;
+	status = "okay";
+};
+
+&rtc {
+	status = "disabled";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins>;
+	status = "okay";
+};
+
+&watchdog {
+	pinctrl-names = "default";
+	pinctrl-0 = <&watchdog_pins>;
+	status = "okay";
+};
+
+&wmac {
+	status = "okay";
+
+	mediatek,mtd-eeprom = <&factory 0x0>;
+};