linux-kernel - Re: [PATCH v3] arm64: dts: qcom: lemans-evk: Add OTG support for primary USB controller

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Message-ID: <aeec371a-ec8c-4a19-ab5f-1ea10f55d6bc@oss.qualcomm.com>
Date: Mon, 27 Oct 2025 16:51:15 +0530
From: Krishna Kurapati PSSNV <krishna.kurapati@....qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        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>,
        Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] arm64: dts: qcom: lemans-evk: Add OTG support for
 primary USB controller



On 10/27/2025 2:06 PM, Konrad Dybcio wrote:
> On 10/24/25 8:21 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>
>> ---
>> Changes in v3:
>> - Moved "usb-role-switch" to lemans dtsi file
>> - Moved vbus supply to connector node
>>
>> Link to v3 bindings and driver support:
>> https://lore.kernel.org/all/20251024181832.2744502-1-krishna.kurapati@oss.qualcomm.com/
>>
>> Link to v2:
>> https://lore.kernel.org/all/20251008180036.1770735-1-krishna.kurapati@oss.qualcomm.com/
>>
>>   arch/arm64/boot/dts/qcom/lemans-evk.dts | 122 +++++++++++++++++++++++-
>>   arch/arm64/boot/dts/qcom/lemans.dtsi    |   1 +
>>   2 files changed, 121 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
>> index c7dc9b8f4457..2baad2612b16 100644
>> --- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
>> +++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
>> @@ -37,6 +37,35 @@ chosen {
>>   		stdout-path = "serial0:115200n8";
>>   	};
>>   
>> +	connector0 {
> 
> "connector-0"
> 
> [...]
> 

ACK.

>> +	vbus_supply_regulator_0: vbus-supply-regulator-0 {
> 
> Other regulators (as can be seen in the diff context below) are
> named regulator-xyz-abc, please follow
> 

ACK.

>> +		compatible = "regulator-fixed";
>> +		regulator-name = "vbus_supply_0";
>> +		gpio = <&expander1 2 GPIO_ACTIVE_HIGH>;
>> +		regulator-min-microvolt = <5000000>;
>> +		regulator-max-microvolt = <5000000>;
>> +		enable-active-high;
>> +	};
>> +
>>   	vmmc_sdc: regulator-vmmc-sdc {
>>   		compatible = "regulator-fixed";
> 
> [...]
> 
>>   &usb_0 {
>> -	dr_mode = "peripheral";
>> -
>>   	status = "okay";
>> +
>> +	ports {
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
>> +
>> +		port@0 {
>> +			reg = <0>;
>> +
>> +			usb3_hs_ep: endpoint {
> 
> Please define these ports in the SoC DTSI and plumb them through &labels
> in this one
> 

ACK.

Will update in v4.

Regards,
Krishna,