linux-kernel - [PATCH 08/11] arm64: dts: rockchip: Enable USB 2.0 ports on Radxa E20C

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Message-ID: <20250723122323.2344916-9-jonas@kwiboo.se>
Date: Wed, 23 Jul 2025 12:23:06 +0000
From: Jonas Karlman <jonas@...boo.se>
To: Heiko Stuebner <heiko@...ech.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>
Cc: Yao Zi <ziyao@...root.org>,
	Chukun Pan <amadeus@....edu.cn>,
	linux-rockchip@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Jonas Karlman <jonas@...boo.se>
Subject: [PATCH 08/11] arm64: dts: rockchip: Enable USB 2.0 ports on Radxa E20C

The Radxa E20C has one USB2.0 Type-A HOST port and one USB2.0 Type-C OTG
port.

Add support for using the USB 2.0 ports on Radxa E20C.

Signed-off-by: Jonas Karlman <jonas@...boo.se>
---
 .../boot/dts/rockchip/rk3528-radxa-e20c.dts   | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
index 12eec2c1db22..363f08c1e24c 100644
--- a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
@@ -134,6 +134,18 @@ vcc5v0_sys: regulator-5v0-vcc-sys {
 		regulator-max-microvolt = <5000000>;
 	};
 
+	vcc5v0_usb20: regulator-5v0-vcc-usb20 {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpios = <&gpio0 RK_PA1 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb_host_en>;
+		regulator-name = "vcc5v0_usb20";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
 	vccio_sd: regulator-vccio-sd {
 		compatible = "regulator-gpio";
 		gpios = <&gpio4 RK_PB6 GPIO_ACTIVE_HIGH>;
@@ -261,6 +273,12 @@ sdmmc_vol_ctrl_h: sdmmc-vol-ctrl-h {
 			rockchip,pins = <4 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};
+
+	usb {
+		usb_host_en: usb-host-en {
+			rockchip,pins = <0 RK_PA1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
 };
 
 &pwm1 {
@@ -303,8 +321,37 @@ &sdmmc {
 	status = "okay";
 };
 
+&u2phy {
+	status = "okay";
+};
+
+&u2phy_host {
+	phy-supply = <&vcc5v0_usb20>;
+	status = "okay";
+};
+
+&u2phy_otg {
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0m0_xfer>;
 	status = "okay";
 };
+
+&usb_host0_ehci {
+	status = "okay";
+};
+
+&usb_host0_ohci {
+	status = "okay";
+};
+
+&usb_host0_xhci {
+	extcon = <&u2phy>;
+	maximum-speed = "high-speed";
+	phys = <&u2phy_otg>;
+	phy-names = "usb2-phy";
+	status = "okay";
+};
-- 
2.50.1