linux-kernel - Re: [PATCH v10 3/3] arm64: dts: qcom: sm8750: Add USB support for SM8750 MTP platform

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Message-ID: <glkwowxkqrhszlh7mpnct2pdc2na7yffq5r3uu73xphtj562oa@mbdlmdltyi4e>
Date: Fri, 31 Oct 2025 16:44:07 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
Cc: 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>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Wesley Cheng <wesley.cheng@....qualcomm.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Jishnu Prakash <jishnu.prakash@....qualcomm.com>
Subject: Re: [PATCH v10 3/3] arm64: dts: qcom: sm8750: Add USB support for
 SM8750 MTP platform

On Fri, Oct 31, 2025 at 06:03:54PM +0530, Krishna Kurapati wrote:
> From: Wesley Cheng <wesley.cheng@....qualcomm.com>
> 
> Enable USB support on SM8750 QRD variant. Add the PMIC glink node with
> connector to enable role switch support.

Subject speaks about MTP.

> 
> Signed-off-by: Wesley Cheng <wesley.cheng@....qualcomm.com>
> [Konrad: Provided diff to flatten USB node on MTP]
> Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> Co-developed-by: Jishnu Prakash <jishnu.prakash@....qualcomm.com>
> Signed-off-by: Jishnu Prakash <jishnu.prakash@....qualcomm.com>
> Signed-off-by: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/sm8750-qrd.dts | 73 +++++++++++++++++++++++++
>  1 file changed, 73 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8750-qrd.dts b/arch/arm64/boot/dts/qcom/sm8750-qrd.dts
> index 13c7b9664c89..c545695751db 100644
> --- a/arch/arm64/boot/dts/qcom/sm8750-qrd.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8750-qrd.dts
> @@ -193,6 +193,51 @@ platform {
>  		};
>  	};
>  
> +	pmic-glink {
> +		compatible = "qcom,sm8750-pmic-glink",
> +			     "qcom,sm8550-pmic-glink",
> +			     "qcom,pmic-glink";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		orientation-gpios = <&tlmm 61 GPIO_ACTIVE_HIGH>;
> +
> +		connector@0 {
> +			compatible = "usb-c-connector";
> +			reg = <0>;
> +
> +			power-role = "dual";
> +			data-role = "dual";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +
> +					pmic_glink_hs_in: endpoint {
> +						remote-endpoint = <&usb_dwc3_hs>;
> +					};
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +
> +					pmic_glink_ss_in: endpoint {
> +						remote-endpoint = <&usb_dp_qmpphy_out>;
> +					};
> +				};
> +
> +				port@2 {
> +					reg = <2>;
> +
> +					pmic_glink_sbu: endpoint {
> +					};
> +				};
> +			};
> +		};
> +	};
> +
>  	vph_pwr: vph-pwr-regulator {
>  		compatible = "regulator-fixed";
>  
> @@ -1054,3 +1099,31 @@ &ufs_mem_hc {
>  
>  	status = "okay";
>  };
> +
> +&usb {
> +	status = "okay";
> +};
> +
> +&usb_dwc3_hs {
> +	remote-endpoint = <&pmic_glink_hs_in>;
> +};
> +
> +&usb_hsphy {
> +	vdd-supply = <&vreg_l2d_0p88>;
> +	vdda12-supply = <&vreg_l3g_1p2>;
> +
> +	phys = <&pmih0108_eusb2_repeater>;
> +
> +	status = "okay";
> +};
> +
> +&usb_dp_qmpphy {
> +	vdda-phy-supply = <&vreg_l3g_1p2>;
> +	vdda-pll-supply = <&vreg_l2d_0p88>;
> +
> +	status = "okay";
> +};
> +
> +&usb_dp_qmpphy_out {
> +	remote-endpoint = <&pmic_glink_ss_in>;
> +};

usb_dp < usb_hsphy

> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry