[PATCH v2 2/5] arm64: dts: rockchip: Enable USB 2.0 ports on Radxa E20C

Heiko Stuebner
2026-05-05T17:12:32Z

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@kwiboo.se>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
.../boot/dts/rockchip/rk3528-radxa-e20c.dts | 48 +++++++++++++++++++
1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
index b32452756155..6fb7e624bb04 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>;
@@ -273,6 +285,12 @@ 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 {
@@ -320,3 +338,33 @@ &uart0 {
pinctrl-0 = <&uart0m0_xfer>;
status = "okay";
};
+
+&usb_host0_ehci {
+ status = "okay";
+};
+
+&usb_host0_ohci {
+ status = "okay";
+};
+
+&usb_host0_xhci {
+ extcon = <&usb2phy>;
+ maximum-speed = "high-speed";
+ phys = <&usb2phy_otg>;
+ phy-names = "usb2-phy";
+ snps,dis_u2_susphy_quirk;
+ status = "okay";
+};
+
+&usb2phy {
+ status = "okay";
+};
+
+&usb2phy_host {