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

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Date:   Wed, 3 May 2023 18:28:59 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Neil Armstrong <neil.armstrong@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.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 03/05/2023 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>;
> +
> +	fsa4480@42 {

Node names should be generic, so e.g. typec-mux
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +		compatible = "fcs,fsa4480";
> +		reg = <0x42>;
> +


Best regards,
Krzysztof