linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: glymur-crd: Enable eDP display support

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Message-ID: <p7btiavlbu3wqcq62j25vyv5reusdqenz7wtqr3zspywittdfl@iivegwoqfjk7>
Date: Thu, 25 Sep 2025 19:46:45 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Abel Vesa <abel.vesa@...aro.org>
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>,
        Pankaj Patil <pankaj.patil@....qualcomm.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: glymur-crd: Enable eDP display
 support

On Thu, Sep 25, 2025 at 06:02:49PM +0300, Abel Vesa wrote:
> Enable the MDSS (Mobile Display SubSystem) along with the 3rd
> DisplayPort controller and its PHY in order to bring support
> for the panel on Glymur CRD platform. Also describe the voltage
> regulator needed by the eDP panel.
> 
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/glymur-crd.dts | 76 +++++++++++++++++++++++++++++++++
>  1 file changed, 76 insertions(+)
> 
> @@ -536,6 +552,52 @@ vreg_l4h_e0_1p2: ldo4 {
>  	};
>  };
>  
> +&mdss {
> +	status = "okay";
> +};
> +
> +&mdss_dp3 {
> +	/delete-property/ #sound-dai-cells;
> +
> +	status = "okay";
> +
> +	aux-bus {
> +		panel {
> +			compatible = "samsung,atna60cl01", "samsung,atna33xc20";
> +			enable-gpios = <&tlmm 18 GPIO_ACTIVE_HIGH>;
> +			power-supply = <&vreg_edp_3p3>;
> +
> +			pinctrl-0 = <&edp_bl_en>;
> +			pinctrl-names = "default";
> +
> +			port {
> +				edp_panel_in: endpoint {
> +					remote-endpoint = <&mdss_dp3_out>;
> +				};
> +			};
> +		};
> +	};
> +
> +	ports {
> +		port@1 {
> +			reg = <1>;
> +			mdss_dp3_out: endpoint {

Define the endpoint in the SoC DTSI and just reference it here.

> +				data-lanes = <0 1 2 3>;
> +				link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
> +
> +				remote-endpoint = <&edp_panel_in>;
> +			};
> +		};
> +	};
> +};
> +

-- 
With best wishes
Dmitry