linux-kernel - Re: [PATCH v2 1/2] arm64: dts: qcom: sm8450-qrd: add pmic glink node

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Message-ID: <20250610110721.tn7kkbcucbfx2o2e@umbar.lan>
Date: Tue, 10 Jun 2025 14:07:21 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>, Rob Herring <robh@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2 1/2] arm64: dts: qcom: sm8450-qrd: add pmic glink node

On Tue, Jun 10, 2025 at 02:48:04PM +0530, Krishna Kurapati wrote:
> Add the pmic glink node linked with the DWC3 USB controller
> switched to OTG mode and tagged with usb-role-switch.
> 
> Signed-off-by: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/sm8450-qrd.dts | 54 ++++++++++++++++++++++++-
>  1 file changed, 53 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8450-qrd.dts b/arch/arm64/boot/dts/qcom/sm8450-qrd.dts
> index 8c39fbcaad80..0580408485eb 100644
> --- a/arch/arm64/boot/dts/qcom/sm8450-qrd.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8450-qrd.dts
> @@ -37,6 +37,49 @@ vph_pwr: vph-pwr-regulator {
>  		regulator-always-on;
>  		regulator-boot-on;
>  	};
> +
> +	pmic-glink {
> +		compatible = "qcom,sm8450-pmic-glink", "qcom,pmic-glink";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		orientation-gpios = <&tlmm 91 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_1_dwc3_hs>;
> +					};
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +
> +					pmic_glink_ss_in: endpoint {
> +						remote-endpoint = <&usb_1_qmpphy_out>;
> +					};
> +				};
> +
> +				port@2 {
> +					reg = <2>;
> +
> +					pmic_glink_sbu: endpoint {
> +					};
> +				};
> +
> +			};
> +		};
> +	};
>  };
>  
>  &apps_rsc {
> @@ -462,7 +505,12 @@ &usb_1 {
>  };
>  
>  &usb_1_dwc3 {
> -	dr_mode = "peripheral";
> +	dr_mode = "otg";

It should be a default, you can drop it.

> +	usb-role-switch;

This should go to sm8450.dtsi

> +};
> +
> +&usb_1_dwc3_hs {
> +	remote-endpoint = <&pmic_glink_hs_in>;
>  };
>  
>  &usb_1_hsphy {
> @@ -487,3 +535,7 @@ &usb_1_qmpphy {
>  	vdda-phy-supply = <&vreg_l6b_1p2>;
>  	vdda-pll-supply = <&vreg_l1b_0p91>;
>  };
> +
> +&usb_1_qmpphy_out {
> +	remote-endpoint = <&pmic_glink_ss_in>;
> +};
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry