linux-kernel - Re: [PATCH] arm64: dts: qcom: lemans-evk: Add OTG support for primary USB controller

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Message-ID: <ee0adfa3-f042-4d2a-adf0-2c5d84d79cd8@oss.qualcomm.com>
Date: Fri, 3 Oct 2025 15:27:49 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Krishna Kurapati <krishna.kurapati@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: lemans-evk: Add OTG support for primary
 USB controller

On 10/2/25 7:29 PM, Krishna Kurapati wrote:
> Enable OTG support for primary USB controller on EVK Platform. Add
> HD3SS3220 Type-C port controller present between Type-C port and SoC
> that provides role switch notifications to controller.
> 
> Signed-off-by: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
> ---
> Link to driver and binding changes:
> https://lore.kernel.org/all/20251002172539.586538-1-krishna.kurapati@oss.qualcomm.com/
> 
>  arch/arm64/boot/dts/qcom/lemans-evk.dts | 122 +++++++++++++++++++++++-
>  1 file changed, 121 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
> index c7dc9b8f4457..0b6d8d2d19d6 100644
> --- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
> +++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
> @@ -37,6 +37,32 @@ chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
>  
> +	connector0 {
> +		compatible = "usb-c-connector";
> +		label = "USB0-Type-C";

Are there other, non-type-C ports labeled USB0 onboard?

> +		data-role = "dual";

power-role = "xxx"

[...]

> +	vbus_supply_regulator_0: vbus-supply-regulator-0 {

the suffix suggests there are going to be more - is that the case?

[...]

>  &usb_0 {
> -	dr_mode = "peripheral";
> +	dr_mode = "otg";

otg is default, you can probably drop it

Konrad