linux-kernel - Re: [PATCH 1/6] arm64: dts: qcom: sm8350: add ports subnodes in usb1 qmpphy node

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Date:   Thu, 4 May 2023 14:57:04 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/6] arm64: dts: qcom: sm8350: add ports subnodes in usb1
 qmpphy node

On 04/05/2023 09:38, Konrad Dybcio wrote:
> 
> 
> On 3.05.2023 15:10, Neil Armstrong wrote:
>> Add the USB3+DP Combo QMP PHY port subnodes in the SM8350 SoC DTSI
>> to avoid duplication in the devices DTs.
>>
>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>> ---
>>   arch/arm64/boot/dts/qcom/sm8350.dtsi | 26 ++++++++++++++++++++++++++
>>   1 file changed, 26 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8350.dtsi b/arch/arm64/boot/dts/qcom/sm8350.dtsi
>> index ebcb481571c2..d048f4d35c89 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8350.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sm8350.dtsi
>> @@ -2149,6 +2149,32 @@ usb_1_qmpphy: phy@...9000 {
>>   			#phy-cells = <1>;
>>   
>>   			status = "disabled";
>> +
>> +			ports {
>> +				#address-cells = <1>;
>> +				#size-cells = <0>;
>> +
>> +				port@0 {
>> +					reg = <0>;
>> +
>> +					usb_1_qmpphy_out: endpoint {
>> +					};
>> +				};
>> +
>> +				port@1 {
>> +					#address-cells = <1>;
>> +					#size-cells = <0>;
>> +					reg = <1>;
>> +
>> +					usb_1_qmpphy_usb_ss_in: endpoint@0 {
>> +						reg = <0>;
>> +					};
>> +
>> +					usb_1_qmpphy_dp_in: endpoint@1 {
>> +						reg = <1>;
>> +					};
> Shouldn't dp be a separate port@2?

Probably yes, but it should be the same issue for makena, but on makena
we do not describe the USB SS and HS links separately, but only a single
port for QMP input has been defined in the bindings.

Neil

> 
> Konrad
>> +				};
>> +			};
>>   		};
>>   
>>   		usb_2_qmpphy: phy-wrapper@...b000 {
>>