mediatek: filogic: add support for ASUS TUF-AX4200Q

ASUS TUF-AX4200Q(TUF 小旋风Pro WiFi6 AX4200) is a home router that adds an additional 2.5G Ethernet port to ASUS TUF-AX4200.

Hardware
- - - - - - - -
- SOC   : MediaTek MT7986
- RAM   : 512MB DDR3
- FLASH : 256MB SPI-NAND (Winbond W25N02KV)
- WIFI  : Mediatek MT7986 DBDC 802.11ax 2.4/5 GHz
- ETH   : MediaTek MT7531 Switch
          MaxLinear GPY211C 2.5 N-Base-T PHY (WAN)
          MaxLinear GPY211C 2.5 N-Base-T PHY (LAN)
- UART  : 3V3 115200 8N1 (Pinout silkscreened / Do not ocnnect VCC)

Installation
- - - - - - - -
Vendor-UI Method:

1. Download or make the OpenWrt initramfs.trx image
2. Connect the PC via LAN to one of the yellow router ports and wait until your PC to get a DHCP lease.
3. Browse to http://192.168.50.1/
4. If your router is brand new, finish the setup process and log into the Web-UI.
5. Navigate to Administration -> Firmware Upgrade and upload the downloaded OpenWrt image.
6. Wait for OpenWrt to boot. Transfer the sysupgrade image to the device using SCP and install using sysupgrade.

   $ sysupgrade -n <path-to-sysupgrade.bin>

TFTP Method:

1. Download the OpenWrt initramfs image.
   Copy the image to a TFTP server reachable at 192.168.1.70/24.
   Rename the image to tufax4200q.bin.

2. Connect the PC with TFTP server to the TUF-AX4200Q.
   Set a static ip on the ethernet interface of your PC.
   (IP address: 192.168.1.70, subnet mask: 255.255.255.0)
   Connect to the serial console,
   interrupt the autoboot process by pressing '4' when prompted.

3. Download & Boot the OpenWrt initramfs image.

   $ setenv ipaddr 192.168.1.1
   $ setenv serverip 192.168.1.70
   $ tftpboot 0x46000000 tufax4200q.bin
   $ bootm 0x46000000

4. Wait for OpenWrt to boot.
   Transfer the sysupgrade image to the device using SCP and install using sysupgrade.

   $ sysupgrade -n <path-to-sysupgrade.bin>

(based on support for ASUS RT-AX52 by achterin and trx image generation by remittor)

Signed-off-by: Brian Lee <larte332@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/20900
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

target/linux/mediatek/dts/mt7986a-asus-tuf-ax4200q.dts

@@ -0,0 +1,435 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+
+/dts-v1/;
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/pinctrl/mt65xx.h>
+
+#include "mt7986a.dtsi"
+
+/ {
+	model = "ASUS TUF-AX4200Q";
+	compatible = "asus,tuf-ax4200q", "mediatek,mt7986a";
+
+	aliases {
+		serial0 = &uart0;
+		label-mac-device = &gmac0;
+		led-boot = &led_system;
+		led-failsafe = &led_system;
+		led-running = &led_system;
+		led-upgrade = &led_system;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		bootargs-override = "";
+	};
+
+	memory@40000000 {
+		reg = <0 0x40000000 0 0x20000000>;
+		device_type = "memory";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&pio 9 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		mesh {
+			label = "wps";
+			gpios = <&pio 10 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		wlan {
+			function = LED_FUNCTION_WLAN;
+			color = <LED_COLOR_ID_WHITE>;
+			gpios = <&pio 2 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "phy1tpt";
+		};
+
+		led_system: system {
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_WHITE>;
+			gpios = <&pio 11 GPIO_ACTIVE_HIGH>;
+		};
+
+		wan-red {
+			function = LED_FUNCTION_WAN;
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&pio 12 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	reg_5v: regulator-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+};
+
+&crypto {
+	status = "okay";
+};
+
+&eth {
+	status = "okay";
+
+	gmac0: mac@0 {
+		/* LAN */
+		compatible = "mediatek,eth-mac";
+		reg = <0>;
+		nvmem-cells = <&macaddr_factory_4>;
+		nvmem-cell-names = "mac-address";
+		phy-mode = "2500base-x";
+
+		fixed-link {
+			speed = <2500>;
+			full-duplex;
+			pause;
+		};
+	};
+
+	mac@1 {
+		/* WAN */
+		compatible = "mediatek,eth-mac";
+		reg = <1>;
+		phy-mode = "2500base-x";
+		phy-handle = <&phy6>;
+	};
+
+	mdio-bus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		reset-gpios = <&pio 6 GPIO_ACTIVE_LOW>;
+		reset-delay-us = <50000>;
+		reset-post-delay-us = <20000>;
+
+		phy5: phy@5 {
+			compatible = "ethernet-phy-ieee802.3-c45";
+			reg = <5>;
+
+			leds {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				led@0 {
+					reg = <0>;
+					active-high;
+					color = <LED_COLOR_ID_WHITE>;
+					function = LED_FUNCTION_LAN;
+				};
+			};
+		};
+
+		phy6: phy@6 {
+			compatible = "ethernet-phy-ieee802.3-c45";
+			reg = <6>;
+
+			leds {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				led@0 {
+					reg = <0>;
+					color = <LED_COLOR_ID_WHITE>;
+					function = LED_FUNCTION_WAN;
+				};
+			};
+		};
+
+		switch@1f {
+			compatible = "mediatek,mt7531";
+			reg = <31>;
+			reset-gpios = <&pio 5 GPIO_ACTIVE_HIGH>;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@1 {
+					reg = <1>;
+					label = "lan1";
+					phy-handle = <&swphy1>;
+				};
+
+				port@2 {
+					reg = <2>;
+					label = "lan2";
+					phy-handle = <&swphy2>;
+				};
+
+				port@3 {
+					reg = <3>;
+					label = "lan3";
+					phy-handle = <&swphy3>;
+				};
+
+				port@4 {
+					reg = <4>;
+					label = "lan4";
+					phy-handle = <&swphy4>;
+				};
+
+				port@5 {
+					reg = <5>;
+					label = "lan5";
+					phy-mode = "2500base-x";
+					phy-handle = <&phy5>;
+				};
+
+				port@6 {
+					reg = <6>;
+					label = "cpu";
+					ethernet = <&gmac0>;
+					phy-mode = "2500base-x";
+
+					fixed-link {
+						speed = <2500>;
+						full-duplex;
+						pause;
+					};
+				};
+			};
+
+			mdio {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				swphy1: phy@1 {
+					reg = <1>;
+
+					mediatek,led-config = <
+						0x21 0x8009 /* BASIC_CTRL */
+						0x22 0x0c00 /* ON_DURATION */
+						0x23 0x1400 /* BLINK_DURATION */
+						0x24 0x8000 /* LED0_ON_CTRL */
+						0x25 0x0000 /* LED0_BLINK_CTRL */
+						0x26 0xc007 /* LED1_ON_CTRL */
+						0x27 0x003f /* LED1_BLINK_CTRL */
+					>;
+				};
+
+				swphy2: phy@2 {
+					reg = <2>;
+
+					mediatek,led-config = <
+						0x21 0x8009 /* BASIC_CTRL */
+						0x22 0x0c00 /* ON_DURATION */
+						0x23 0x1400 /* BLINK_DURATION */
+						0x24 0x8000 /* LED0_ON_CTRL */
+						0x25 0x0000 /* LED0_BLINK_CTRL */
+						0x26 0xc007 /* LED1_ON_CTRL */
+						0x27 0x003f /* LED1_BLINK_CTRL */
+					>;
+				};
+
+				swphy3: phy@3 {
+					reg = <3>;
+
+					mediatek,led-config = <
+						0x21 0x8009 /* BASIC_CTRL */
+						0x22 0x0c00 /* ON_DURATION */
+						0x23 0x1400 /* BLINK_DURATION */
+						0x24 0x8000 /* LED0_ON_CTRL */
+						0x25 0x0000 /* LED0_BLINK_CTRL */
+						0x26 0xc007 /* LED1_ON_CTRL */
+						0x27 0x003f /* LED1_BLINK_CTRL */
+					>;
+				};
+
+				swphy4: phy@4 {
+					reg = <4>;
+
+					mediatek,led-config = <
+						0x21 0x8009 /* BASIC_CTRL */
+						0x22 0x0c00 /* ON_DURATION */
+						0x23 0x1400 /* BLINK_DURATION */
+						0x24 0x8000 /* LED0_ON_CTRL */
+						0x25 0x0000 /* LED0_BLINK_CTRL */
+						0x26 0xc007 /* LED1_ON_CTRL */
+						0x27 0x003f /* LED1_BLINK_CTRL */
+					>;
+				};
+			};
+		};
+	};
+};
+
+&pio {
+	spi_flash_pins: spi-flash-pins-33-to-38 {
+		mux {
+			function = "spi";
+			groups = "spi0", "spi0_wp_hold";
+		};
+		conf-pu {
+			pins = "SPI2_CS", "SPI2_HOLD", "SPI2_WP";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-disable; /* bias-disable */
+		};
+		conf-pd {
+			pins = "SPI2_CLK", "SPI2_MOSI", "SPI2_MISO";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-disable; /* bias-disable */
+		};
+	};
+
+	wf_2g_5g_pins: wf_2g_5g-pins {
+		mux {
+			function = "wifi";
+			groups = "wf_2g", "wf_5g";
+		};
+		conf {
+			pins = "WF0_HB1", "WF0_HB2", "WF0_HB3", "WF0_HB4",
+			       "WF0_HB0", "WF0_HB0_B", "WF0_HB5", "WF0_HB6",
+			       "WF0_HB7", "WF0_HB8", "WF0_HB9", "WF0_HB10",
+			       "WF0_TOP_CLK", "WF0_TOP_DATA", "WF1_HB1",
+			       "WF1_HB2", "WF1_HB3", "WF1_HB4", "WF1_HB0",
+			       "WF1_HB5", "WF1_HB6", "WF1_HB7", "WF1_HB8",
+			       "WF1_TOP_CLK", "WF1_TOP_DATA";
+			drive-strength = <MTK_DRIVE_4mA>;
+		};
+	};
+
+	wf_dbdc_pins: wf-dbdc-pins {
+		mux {
+			function = "wifi";
+			groups = "wf_dbdc";
+		};
+		conf {
+			pins = "WF0_HB1", "WF0_HB2", "WF0_HB3", "WF0_HB4",
+			       "WF0_HB0", "WF0_HB0_B", "WF0_HB5", "WF0_HB6",
+			       "WF0_HB7", "WF0_HB8", "WF0_HB9", "WF0_HB10",
+			       "WF0_TOP_CLK", "WF0_TOP_DATA", "WF1_HB1",
+			       "WF1_HB2", "WF1_HB3", "WF1_HB4", "WF1_HB0",
+			       "WF1_HB5", "WF1_HB6", "WF1_HB7", "WF1_HB8",
+			       "WF1_TOP_CLK", "WF1_TOP_DATA";
+			drive-strength = <MTK_DRIVE_4mA>;
+		};
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi_flash_pins>;
+	status = "okay";
+
+	spi_nand_flash: flash@0 {
+		compatible = "u-boot-dont-touch-spi-nand";
+		reg = <0>;
+
+		spi-max-frequency = <52000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+
+		/*
+		 * ASUS bootloader tries to replace the partitions defined in
+		 * Device Tree and by that also deletes all additional properties
+		 * needed for UBI and NVMEM-on-UBI.
+		 * Prevent this from happening by tricking the loader to delete and
+		 * replace a bait node instead (works with older bootloaders).
+		 */
+		partitions: dummy {
+			compatible = "u-boot-dummy-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				reg = <0x0 0x0>;
+				label = "remove_me";
+			};
+		};
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				reg = <0x0 0x400000>;
+				label = "bootloader";
+				read-only;
+			};
+
+			partition@400000 {
+				compatible = "linux,ubi";
+				reg = <0x400000 0xfc00000>;
+				label = "UBI_DEV";
+
+				volumes {
+					ubi-volume-factory {
+						volname = "Factory";
+
+						nvmem-layout {
+							compatible = "fixed-layout";
+							#address-cells = <1>;
+							#size-cells = <1>;
+
+							eeprom_factory_0: eeprom@0 {
+								reg = <0x0 0x1000>;
+							};
+
+							macaddr_factory_4: macaddr@4 {
+								reg = <0x4 0x6>;
+							};
+						};
+					};
+				};
+			};
+		};
+	};
+};
+
+&watchdog {
+	status = "okay";
+};
+
+&wifi {
+	nvmem-cells = <&eeprom_factory_0>;
+	nvmem-cell-names = "eeprom";
+	pinctrl-0 = <&wf_2g_5g_pins>;
+	pinctrl-1 = <&wf_dbdc_pins>;
+	pinctrl-names = "default", "dbdc";
+	status = "okay";
+};
+
+&trng {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&ssusb {
+	vusb33-supply = <&reg_3p3v>;
+	vbus-supply = <&reg_5v>;
+	status = "okay";
+};
+
+&usb_phy {
+	status = "okay";
+};
+

target/linux/mediatek/filogic/base-files/etc/board.d/01_leds

@@ -27,6 +27,7 @@ snr,snr-cpe-ax2)
 asus,tuf-ax4200)
 	ucidef_set_led_netdev "wan" "WAN" "mdio-bus:06:white:wan" "eth1" "link tx rx"
 	;;
+asus,tuf-ax4200q|\
 asus,tuf-ax6000)
 	ucidef_set_led_netdev "lan5" "LAN5" "mdio-bus:05:white:lan" "lan5" "link tx rx"
 	ucidef_set_led_netdev "wan" "WAN" "mdio-bus:06:white:wan" "eth1" "link tx rx"

target/linux/mediatek/filogic/base-files/etc/board.d/02_network

@@ -74,6 +74,7 @@ mediatek_setup_interfaces()
 		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4" eth1
 		;;
 	asiarf,ap7986-003|\
+	asus,tuf-ax4200q|\
 	asus,tuf-ax6000|\
 	glinet,gl-mt6000|\
 	tplink,tl-xdr4288|\

target/linux/mediatek/filogic/base-files/etc/hotplug.d/ieee80211/11_fix_wifi_mac

@@ -45,6 +45,7 @@ case "$board" in
 		;;
 	asus,rt-ax52|\
 	asus,tuf-ax4200|\
+	asus,tuf-ax4200q|\
 	asus,tuf-ax6000)
 		CI_UBIPART="UBI_DEV"
 		addr=$(mtd_get_mac_binary_ubi "Factory" 0x4)

target/linux/mediatek/filogic/base-files/lib/preinit/10_fix_eth_mac.sh

@@ -31,6 +31,7 @@ preinit_set_mac_address() {
 		ip link set dev internet address "$wan_mac"
 		;;
 	asus,tuf-ax4200|\
+	asus,tuf-ax4200q|\
 	asus,tuf-ax6000)
 		CI_UBIPART="UBI_DEV"
 		addr=$(mtd_get_mac_binary_ubi "Factory" 0x4)

target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh

@@ -142,6 +142,7 @@ platform_do_upgrade() {
 	asus,rt-ax52|\
 	asus,rt-ax59u|\
 	asus,tuf-ax4200|\
+	asus,tuf-ax4200q|\
 	asus,tuf-ax6000|\
 	asus,zenwifi-bt8)
 		CI_UBIPART="UBI_DEV"
@@ -365,6 +366,7 @@ platform_pre_upgrade() {
 	asus,rt-ax52|\
 	asus,rt-ax59u|\
 	asus,tuf-ax4200|\
+	asus,tuf-ax4200q|\
 	asus,tuf-ax6000|\
 	asus,zenwifi-bt8)
 		asus_initial_setup

target/linux/mediatek/image/filogic.mk

@@ -428,6 +428,28 @@ endif
 endef
 TARGET_DEVICES += asus_tuf-ax4200
 
+define Device/asus_tuf-ax4200q
+  DEVICE_VENDOR := ASUS
+  DEVICE_MODEL := TUF-AX4200Q
+  DEVICE_DTS := mt7986a-asus-tuf-ax4200q
+  DEVICE_DTS_DIR := ../dts
+  DEVICE_PACKAGES := kmod-usb3 kmod-mt7915e kmod-mt7986-firmware mt7986-wo-firmware
+  IMAGES := sysupgrade.bin
+  KERNEL := kernel-bin | lzma | \
+        fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb
+  KERNEL_INITRAMFS := kernel-bin | lzma | \
+        fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb with-initrd | pad-to 64k
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+ifeq ($(IB),)
+ifeq ($(CONFIG_TARGET_INITRAMFS_FORCE),y)
+  ARTIFACTS := initramfs.trx
+  ARTIFACT/initramfs.trx := append-image-stage initramfs-kernel.bin | \
+	uImage none | asus-trx -v 3 -n TUF-AX4200
+endif
+endif
+endef
+TARGET_DEVICES += asus_tuf-ax4200q
+
 define Device/asus_tuf-ax6000
   DEVICE_VENDOR := ASUS
   DEVICE_MODEL := TUF-AX6000