Re: [PATCH v2 2/3] riscv: dts: spacemit: enable USB3 on OrangePi R2S

Michael Opdenacker
2026-04-02T14:25:07Z

Hi Chukun

On 4/2/26 12:00 PM, Chukun Pan wrote:
> Enable the DWC3 USB3.0 controller and its associated PHY on the
> OrangePi R2S. The USB regulator provides VBUS for USB2 and USB3
> ports, but the USB2 ports are handled by a separate controller.
>
> Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
> ---
> .../boot/dts/spacemit/k1-orangepi-r2s.dts | 24 +++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
> index 409a6db269ae..bc68721e6263 100644
> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
> @@ -40,6 +40,20 @@ vcc4v0: regulator-vcc4v0 {
> regulator-max-microvolt = <4000000>;
> vin-supply = <&vcc_5v0>;
> };
> +
> + vcc5v0_usb: regulator-vcc5v0-usb {
> + compatible = "regulator-fixed";
> + enable-active-high;
> + gpios = <&gpio K1_GPIO(126) GPIO_ACTIVE_HIGH>;
> + regulator-name = "vcc5v0_usb";
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <5000000>;
> + vin-supply = <&vcc_5v0>;
> + };
> +};
> +
> +&combo_phy {
> + status = "okay";
> };
>
> &emmc {
> @@ -109,3 +123,13 @@ &uart0 {
> pinctrl-0 = <&uart0_2_cfg>;
> status = "okay";
> };
> +
> +&usbphy2 {
> + status = "okay";
> +};
> +
> +&usb_dwc3 {
> + dr_mode = "host";
> + vbus-supply = <&vcc5v0_usb>;
> + status = "okay";
> +};

Thanks a lot for the patch!
Would you mind sharing your configuration with me (in PM?).

I can list the USB 3 hub, but I can't see the USB mass storage device
plugged in the USB3 port.

# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Thanks in advance
Cheers
Michael.

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