linux-kernel - Re: [PATCH 3/6] arm64: dts: qcom: sm8350-hdk: Add QMP & DP to SuperSpeed graph

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Message-ID: <b18a22c0-2cc2-d361-262c-2e5cf802641b@linaro.org>
Date:   Thu, 4 May 2023 14:55:19 +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 3/6] arm64: dts: qcom: sm8350-hdk: Add QMP & DP to
 SuperSpeed graph

On 04/05/2023 08:53, Konrad Dybcio wrote:
> 
> 
> On 3.05.2023 15:10, Neil Armstrong wrote:
>> With support for the QMP combo phy to react to USB Type-C switch events,
>> introduce it as the next hop for the SuperSpeed lanes of the Type-C
>> connector, and connect the output of the DisplayPort controller
>> to the QMP combo phy.
>>
>> This allows the TCPM to perform orientation switching of both USB and
>> DisplayPort signals.
>>
>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>> ---
>>   arch/arm64/boot/dts/qcom/sm8350-hdk.dts | 74 ++++++++++++++++++++++++++++++++-
>>   1 file changed, 72 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8350-hdk.dts b/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
>> index 2ee1b121686a..fa835bdb7408 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
>> +++ b/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
>> @@ -58,7 +58,15 @@ port@1 {
>>   					reg = <1>;
>>   
>>   					pmic_glink_ss_in: endpoint {
>> -						remote-endpoint = <&usb_1_dwc3_ss>;
>> +						remote-endpoint = <&usb_1_qmpphy_out>;
>> +					};
>> +				};
>> +
>> +				port@2 {
>> +					reg = <2>;
>> +
>> +					pmic_glink_sbu: endpoint {
>> +						remote-endpoint = <&fsa4480_sbu_mux>;
>>   					};
>>   				};
>>   			};
>> @@ -326,6 +334,36 @@ zap-shader {
>>   	};
>>   };
>>   
>> +&i2c13 {
>> +	status = "okay";
>> +	clock-frequency = <100000>;
> Status last

Ack

> 
>> +
>> +	fsa4480@42 {
>> +		compatible = "fcs,fsa4480";
>> +		reg = <0x42>;
>> +
>> +		interrupts-extended = <&tlmm 2 IRQ_TYPE_LEVEL_LOW>;
>> +
>> +		vcc-supply = <&vreg_bob>;
>> +		mode-switch;
>> +		orientation-switch;
>> +		svid = /bits/ 16 <0xff01>;
>> +
>> +		ports {
>> +			#address-cells = <1>;
>> +			#size-cells = <0>;
>> +
>> +			port@0 {
>> +				reg = <0>;
>> +
>> +				fsa4480_sbu_mux: endpoint {
>> +					remote-endpoint = <&pmic_glink_sbu>;
>> +				};
>> +			};
>> +		};
>> +	};
>> +};
>> +
>>   &i2c15 {
>>   	clock-frequency = <400000>;
>>   	status = "okay";
>> @@ -370,6 +408,20 @@ &mdss {
>>   	status = "okay";
>>   };
>>   
>> +&mdss_dp {
>> +	status = "okay";
>> +
>> +	ports {
>> +		port@1 {
>> +			reg = <1>;
> missing newline
> 
>> +			mdss_dp0_out: endpoint {
>> +				data-lanes = <0 1>;
>> +				remote-endpoint = <&usb_1_qmpphy_dp_in>;
>> +			};
>> +		};
>> +	};
>> +};
>> +
>>   &mdss_mdp {
>>   	status = "okay";
>>   };
>> @@ -416,6 +468,10 @@ &qupv3_id_0 {
>>   	status = "okay";
>>   };
>>   
>> +&qupv3_id_1 {
>> +	status = "okay";
>> +};
>> +
>>   &qupv3_id_2 {
>>   	status = "okay";
>>   };
>> @@ -716,7 +772,7 @@ &usb_1_dwc3_hs {
>>   };
>>   
>>   &usb_1_dwc3_ss {
>> -	remote-endpoint = <&pmic_glink_ss_in>;
>> +	remote-endpoint = <&usb_1_qmpphy_usb_ss_in>;
>>   };
>>   
>>   &usb_1_hsphy {
>> @@ -732,6 +788,20 @@ &usb_1_qmpphy {
>>   
>>   	vdda-phy-supply = <&vreg_l6b_1p2>;
>>   	vdda-pll-supply = <&vreg_l1b_0p88>;
>> +
>> +	orientation-switch;
> this is a common property which will/should be ignored if no
> usbc is present

So, do you mean it should be in the common dtsi ? I don't see why since
it's only true if there's an USB-C connector

> 
>> +};
>> +
>> +&usb_1_qmpphy_out {
>> +	remote-endpoint = <&pmic_glink_ss_in>;
>> +};
>> +
>> +&usb_1_qmpphy_usb_ss_in {
>> +	remote-endpoint = <&usb_1_dwc3_ss>;
>> +};
>> +
>> +&usb_1_qmpphy_dp_in {
>> +	remote-endpoint = <&mdss_dp0_out>;
> 'd' < 'o' < 'u'
Exact...

> 
> with that fixed
> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> 
> Konrad
>>   };
>>   
>>   &usb_2 {
>>