openwrt-pf/target/linux/ramips/dts/mt7621_tplink_archer-ax53-v1.dts

// SPDX-License-Identifier: GPL-2.0-or-later
//
// Device Tree for TP-Link Archer AX53 v1 (EU)
//
// SoC:    MediaTek MT7621DAT (dual-core MIPS 1004Kc @ 880MHz)
//         — integrated 256MB DDR3 in SoC package
// WiFi:   MediaTek MT7975DN (2x2 2.4GHz + 2x2 5GHz, 802.11ax)
//         — PCIe-based, driven by mt76 driver
// Flash:  16MB SPI NOR (en25qh128 or similar)
// Switch:  MT7530 (built into MT7621)
//
// Based on: tplink_archer-ax23-v1 (same WiFi chipset, same SoC family)
// Ported by: Portugal Futurista — OpenWrt PF Fork
//
// WARNING: This DTS is UNTESTED. Requires serial console access to verify
// GPIO mappings, flash layout, and MAC address locations. Flash only via
// TFTP recovery (hold reset while powering on) — do NOT flash from stock
// firmware web UI without prior TFTP/UART validation.

/dts-v1/;

#include "mt7621.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>

/ {
	compatible = "tplink,archer-ax53-v1", "mediatek,mt7621-soc";
	model = "TP-Link Archer AX53 v1";

	aliases {
		led-boot = &led_power;
		led-failsafe = &led_power;
		led-running = &led_power;
		led-upgrade = &led_power;
		label-mac-device = &gmac1;
	};

	chosen {
		bootargs = "console=ttyS0,115200";
	};

	leds {
		compatible = "gpio-leds";

		led_power: power {
			label = "green:power";
			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
		};

		wlan2g {
			label = "green:wlan2g";
			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
			linux,default-trigger = "phy0radio";
		};

		wlan5g {
			label = "green:wlan5g";
			gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
			linux,default-trigger = "phy1radio";
		};

		// TODO: Verify with serial — these are best guesses from AX23
		wan_green {
			label = "green:wan";
			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
		};

		lan_green {
			label = "green:lan";
			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
		};
	};

	keys {
		compatible = "gpio-keys";

		reset {
			label = "reset";
			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
			linux,code = <KEY_RESTART>;
		};

		wps {
			label = "wps";
			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
			linux,code = <KEY_WPS_BUTTON>;
		};
	};
};

// ── SPI Flash (16MB) ────────────────────────────────────────────────────
&spi0 {
	status = "okay";

	flash@0 {
		compatible = "jedec,spi-nor";
		reg = <0>;
		spi-max-frequency = <50000000>;

		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;
			#size-cells = <1>;

			partition@0 {
				label = "u-boot";
				reg = <0x00000 0x30000>;
				read-only;
			};

			partition@30000 {
				label = "u-boot-env";
				reg = <0x30000 0x10000>;
				read-only;
			};

			partition@40000 {
				label = "factory";
				reg = <0x40000 0x10000>;
				read-only;

				nvmem-layout {
					compatible = "fixed-layout";
					#address-cells = <1>;
					#size-cells = <1>;

					macaddr_factory_4: macaddr@4 {
						reg = <0x4 0x6>;
					};

					macaddr_factory_28: macaddr@28 {
						reg = <0x28 0x6>;
					};
				};
			};

			partition@50000 {
				compatible = "denx,uimage";
				label = "firmware";
				reg = <0x50000 0xf60000>;
			};

			partition@fb0000 {
				label = "config";
				reg = <0xfb0000 0x40000>;
				read-only;
			};

			partition@ff0000 {
				label = "product-info";
				reg = <0xff0000 0x10000>;
				read-only;
			};
		};
	};
};

// ── Ethernet (MT7530 switch) ─────────────────────────────────────────────
&gmac1 {
	status = "okay";
	label = "wan";
	phy-handle = <&ethphy4>;

	nvmem-cells = <&macaddr_factory_4>;
	nvmem-cell-names = "mac-address";
};

&mdio {
	ethphy4: ethernet-phy@4 {
		reg = <4>;
	};
};

&switch0 {
	ports {
		port@0 {
			status = "okay";
			label = "lan1";
		};

		port@1 {
			status = "okay";
			label = "lan2";
		};

		port@2 {
			status = "okay";
			label = "lan3";
		};

		port@3 {
			status = "okay";
			label = "lan4";
		};
	};
};

// ── PCIe WiFi (MT7975DN) ─────────────────────────────────────────────────
&pcie {
	status = "okay";
};

&pcie0 {
	wifi@0,0 {
		compatible = "pci14c3,7975";
		reg = <0x0000 0 0 0 0>;

		nvmem-cells = <&macaddr_factory_28>;
		nvmem-cell-names = "mac-address";

		// MT7975DN is a combo chip — 2.4GHz + 5GHz on single PCIe device
		// The mt76 driver handles band split internally
	};
};

// ── UART (serial console — accessible via test pads on PCB) ──────────────
&uartlite {
	status = "okay";
};

// ── GPIO ─────────────────────────────────────────────────────────────────
&state_default {
	gpio {
		groups = "i2c", "uart2", "uart3", "wdt";
		function = "gpio";
	};
};