From: Sjoerd Simons <sjoerd@collabora.com>
Date: Tue, 23 Dec 2025 12:37:53 +0000 (+0100)
Subject: arm64: dts: mediatek: mt7981b-openwrt-one: Enable PCIe and USB
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8f350dbb2e4a7eaa5de97c6502d004caa26eba1a;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: mediatek: mt7981b-openwrt-one: Enable PCIe and USB

Enable the PCIe controller and USB3 XHCI host on the OpenWrt One
board. The USB controller is configured for USB 2.0 only mode, as the
shared USB3/PCIe PHY is dedicated to PCIe functionality on this board.

Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---

diff --git a/arch/arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts b/arch/arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts
index 2e39e72877301..7382599cfea29 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7981b-openwrt-one.dts
@@ -67,9 +67,40 @@
 			linux,default-trigger = "netdev";
 		};
 	};
+
+	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;
+	};
+};
+
+&pcie {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie_pins>;
+	status = "okay";
 };
 
 &pio {
+	pcie_pins: pcie-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie_pereset";
+		};
+	};
+
 	pwm_pins: pwm-pins {
 		mux {
 			function = "pwm";
@@ -163,3 +194,15 @@
 &uart0 {
 	status = "okay";
 };
+
+&usb_phy {
+	status = "okay";
+};
+
+&xhci {
+	phys = <&u2port0 PHY_TYPE_USB2>;
+	vusb33-supply = <&reg_3p3v>;
+	vbus-supply = <&reg_5v>;
+	mediatek,u3p-dis-msk = <0x01>;
+	status = "okay";
+};