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

From: Michael Opdenacker <michael.opdenacker@rootcommit.com>
To: Chukun Pan <amadeus@jmu.edu.cn>, Yixun Lan <dlan@kernel.org>
Cc: michael.opdenacker@rootcommit.com, Rob Herring <robh@kernel.org>,
	Paul Walmsley <pjw@kernel.org>, Alexandre Ghiti <alex@ghiti.fr>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Conor Dooley <conor+dt@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org, spacemit@lists.linux.dev
Subject: Re: [PATCH v2 2/3] riscv: dts: spacemit: enable USB3 on OrangePi R2S
Date: Thu,  2 Apr 2026 14:24:52 +0000 (UTC)	[thread overview]
Message-ID: <46e715a4-0fd7-4692-9a25-a44d469b17b0@rootcommit.com> (raw)
In-Reply-To: <20260402100007.110201-3-amadeus@jmu.edu.cn>

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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