linux-kernel - Re: [PATCH 2/4] arm64: dts: qcom: sm6115p-j606f: Hook up display

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Date:   Tue, 20 Jun 2023 18:52:02 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...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>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] arm64: dts: qcom: sm6115p-j606f: Hook up display

On 20/06/2023 16:17, Konrad Dybcio wrote:
> Enable the required nodes, add the required pins and tweak a
> regulator to enable non-simplefb display on the Tab P11.
> 
> Do note that there exists a second SKU with a different panel+touch
> combo, but due to insufficient information, that will need to be
> handled separately.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/sm6115p-lenovo-j606f.dts | 57 +++++++++++++++++++++--
>   1 file changed, 52 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm6115p-lenovo-j606f.dts b/arch/arm64/boot/dts/qcom/sm6115p-lenovo-j606f.dts
> index 81fdcaf48926..a10ce676bd44 100644
> --- a/arch/arm64/boot/dts/qcom/sm6115p-lenovo-j606f.dts
> +++ b/arch/arm64/boot/dts/qcom/sm6115p-lenovo-j606f.dts
> @@ -65,9 +65,41 @@ ramoops@...00000 {
>   	};
>   };
>   
> -&dispcc {
> -	/* HACK: disable until a panel driver is ready to retain simplefb */
> -	status = "disabled";
> +&mdss {
> +	status = "okay";
> +};
> +
> +&mdss_dsi0 {
> +	vdda-supply = <&pm6125_l18>;
> +	status = "okay";
> +
> +	panel: panel@0 {
> +		compatible = "lenovo,j606f-boe-nt36523w", "novatek,nt36523w";
> +		reg = <0>;
> +
> +		reset-gpios = <&tlmm 82 GPIO_ACTIVE_LOW>;
> +		vddio-supply = <&pm6125_l9>;
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&te_active &sde_dsi_active>;
> +
> +		rotation = <180>; /* Yep, it's mounted upside down! */
> +
> +		port {
> +			panel_in: endpoint {
> +				remote-endpoint = <&mdss_dsi0_out>;
> +			};
> +		};
> +	};
> +};
> +
> +&mdss_dsi0_out {
> +	data-lanes = <0 1 2 3>;
> +	remote-endpoint = <&panel_in>;
> +};
> +
> +&mdss_dsi0_phy {
> +	status = "okay";
>   };
>   
>   &pm6125_gpios {
> @@ -212,8 +244,9 @@ pm6125_l17: l17 {
>   		};
>   
>   		pm6125_l18: l18 {
> -			regulator-min-microvolt = <1104000>;
> -			regulator-max-microvolt = <1312000>;
> +			/* 1.104V-1.312V fixed @ 1.232V for DSIPHY */
> +			regulator-min-microvolt = <1232000>;
> +			regulator-max-microvolt = <1232000>;
>   		};
>   
>   		pm6125_l19: l19 {
> @@ -282,6 +315,20 @@ sdc2_gate_pin: sdc2-gate-state {
>   		bias-pull-up;
>   		output-high;
>   	};
> +
> +	te_active: te-active-state {
> +		pins = "gpio81";
> +		function = "mdp_vsync";
> +		drive-strength = <2>;
> +		bias-pull-down;
> +	};
> +
> +	sde_dsi_active: te-active-state {

mdss_dsi_active? Or just dsi_active?

> +		pins = "gpio82";
> +		function = "gpio";
> +		drive-strength = <8>;
> +		bias-disable;
> +	};
>   };
>   
>   &ufs_mem_hc {
> 

-- 
With best wishes
Dmitry