Enable display on MTP8750 board with Novatek NT37801 panel.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 arch/arm64/boot/dts/qcom/sm8750-mtp.dts | 70 +++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
index c8cb521b4c26..68644eccdbff 100644
--- a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
@@ -933,6 +933,48 @@ &lpass_vamacro {
 	qcom,dmic-sample-rate = <4800000>;
 };
 
+&mdss {
+	status = "okay";
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&vreg_l3g_1p2>;
+
+	status = "okay";
+
+	panel@0 {
+		compatible = "novatek,nt37801";
+		reg = <0>;
+
+		reset-gpios = <&tlmm 98 GPIO_ACTIVE_LOW>;
+
+		vddio-supply = <&vreg_l12b_1p8>;
+		vci-supply = <&vreg_l13b_3p0>;
+		vdd-supply = <&vreg_l11b_1p0>;
+
+		pinctrl-0 = <&disp0_reset_n_active>, <&mdp_vsync_active>;
+		pinctrl-1 = <&disp0_reset_n_suspend>, <&mdp_vsync_suspend>;
+		pinctrl-names = "default", "sleep";
+
+		port {
+			panel0_in: endpoint {
+				remote-endpoint = <&mdss_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss_dsi0_out {
+	remote-endpoint = <&panel0_in>;
+	data-lanes = <0 1 2 3>;
+};
+
+&mdss_dsi0_phy {
+	vdds-supply = <&vreg_l3i_0p88>;
+
+	status = "okay";
+};
+
 &pm8550_flash {
 	status = "okay";
 
@@ -1194,6 +1236,34 @@ sw-ctrl-pins {
 		};
 	};
 
+	disp0_reset_n_active: disp0-reset-n-active-state {
+		pins = "gpio98";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+	};
+
+	disp0_reset_n_suspend: disp0-reset-n-suspend-state {
+		pins = "gpio98";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
+	mdp_vsync_active: mdp-vsync-active-state {
+		pins = "gpio86";
+		function = "mdp_vsync";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
+	mdp_vsync_suspend: mdp-vsync-suspend-state {
+		pins = "gpio86";
+		function = "mdp_vsync";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
 	wcd_default: wcd-reset-n-active-state {
 		pins = "gpio101";
 		function = "gpio";

-- 
2.48.1

On Wed, Nov 12, 2025 at 04:02:39PM +0100, Krzysztof Kozlowski wrote:
> Enable display on MTP8750 board with Novatek NT37801 panel.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/sm8750-mtp.dts | 70 +++++++++++++++++++++++++++++++++
>  1 file changed, 70 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
> index c8cb521b4c26..68644eccdbff 100644
> --- a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
> @@ -933,6 +933,48 @@ &lpass_vamacro {
>  	qcom,dmic-sample-rate = <4800000>;
>  };
>  
> +&mdss {
> +	status = "okay";
> +};
> +
> +&mdss_dsi0 {
> +	vdda-supply = <&vreg_l3g_1p2>;
> +
> +	status = "okay";
> +
> +	panel@0 {
> +		compatible = "novatek,nt37801";
> +		reg = <0>;
> +
> +		reset-gpios = <&tlmm 98 GPIO_ACTIVE_LOW>;
> +
> +		vddio-supply = <&vreg_l12b_1p8>;
> +		vci-supply = <&vreg_l13b_3p0>;
> +		vdd-supply = <&vreg_l11b_1p0>;
> +
> +		pinctrl-0 = <&disp0_reset_n_active>, <&mdp_vsync_active>;
> +		pinctrl-1 = <&disp0_reset_n_suspend>, <&mdp_vsync_suspend>;

Nit: Is the VSYNC pin a pinctrl for the panel? I think it's a pin used
by DSI controller or by the DPU.

Other than that:


Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>



-- 
With best wishes
Dmitry

On 13/11/2025 04:50, Dmitry Baryshkov wrote:
> On Wed, Nov 12, 2025 at 04:02:39PM +0100, Krzysztof Kozlowski wrote:
>> Enable display on MTP8750 board with Novatek NT37801 panel.
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
>> ---
>>  arch/arm64/boot/dts/qcom/sm8750-mtp.dts | 70 +++++++++++++++++++++++++++++++++
>>  1 file changed, 70 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
>> index c8cb521b4c26..68644eccdbff 100644
>> --- a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
>> +++ b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
>> @@ -933,6 +933,48 @@ &lpass_vamacro {
>>  	qcom,dmic-sample-rate = <4800000>;
>>  };
>>  
>> +&mdss {
>> +	status = "okay";
>> +};
>> +
>> +&mdss_dsi0 {
>> +	vdda-supply = <&vreg_l3g_1p2>;
>> +
>> +	status = "okay";
>> +
>> +	panel@0 {
>> +		compatible = "novatek,nt37801";
>> +		reg = <0>;
>> +
>> +		reset-gpios = <&tlmm 98 GPIO_ACTIVE_LOW>;
>> +
>> +		vddio-supply = <&vreg_l12b_1p8>;
>> +		vci-supply = <&vreg_l13b_3p0>;
>> +		vdd-supply = <&vreg_l11b_1p0>;
>> +
>> +		pinctrl-0 = <&disp0_reset_n_active>, <&mdp_vsync_active>;
>> +		pinctrl-1 = <&disp0_reset_n_suspend>, <&mdp_vsync_suspend>;
> 
> Nit: Is the VSYNC pin a pinctrl for the panel? I think it's a pin used
> by DSI controller or by the DPU.

On the schematics it goes to the panel, so I think it might be treated
as panel's property. It's also made like this on every other DTS,
although I know that this is not the best argument.

> 
> Other than that:
> 
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

Best regards,
Krzysztof