And supporting msm drm nodes, including backlight

Signed-off-by: Paul Sajna <sajattack@postmarketos.org>
Co-developed-by: Amir Dahan <system64fumo@protonmail.com>
Signed-off-by: Amir Dahan <system64fumo@protonmail.com>
---
 arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi |  8 +--
 arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts  | 67 ++++++++++++++++++++++++++
 2 files changed, 71 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
index db28a2494a0cc4b9e9d997d11f1acfb116e586e3..ea4de09b549d1d436897ea6059d27556041a6b68 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
@@ -461,10 +461,6 @@ &cdsp_pas {
 	status = "okay";
 };
 
-&dispcc {
-	status = "disabled";
-};
-
 &gcc {
 	protected-clocks = <GCC_QSPI_CORE_CLK>,
 			   <GCC_QSPI_CORE_CLK_SRC>,
@@ -532,6 +528,10 @@ led@5 {
 	};
 };
 
+&pmi8998_wled {
+	status = "okay";
+};
+
 &sdhc_2 {
 	cd-gpios = <&tlmm 126 GPIO_ACTIVE_LOW>;
 
diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
index be488891d0ab01c5bfd3762514fbf1c3bbf6845a..8077a9fb0dc28237fc6ac0b70c8ef45a0d72876d 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
@@ -61,6 +61,45 @@ zap-shader {
 	};
 };
 
+&mdss {
+	status = "okay";
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&vdda_mipi_dsi0_1p2>;
+
+	status = "okay";
+
+	display_panel: panel@0 {
+		reg = <0>;
+		compatible = "lg,sw49410";
+
+		backlight = <&pmi8998_wled>;
+		reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
+
+		pinctrl-names = "default", "sleep";
+		pinctrl-0 = <&sde_dsi_active &sde_te_active>;
+		pinctrl-1 = <&sde_dsi_sleep &sde_te_sleep>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&mdss_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss_dsi0_phy {
+	vdds-supply = <&vdda_mipi_dsi0_pll>;
+
+	status = "okay";
+};
+
+&mdss_dsi0_out {
+	remote-endpoint = <&panel_in>;
+	data-lanes = <0 1 2 3>;
+};
+
 &mss_pil {
 	firmware-name = "qcom/sdm845/judyln/mba.mbn", "qcom/sdm845/judyln/modem.mbn";
 };
@@ -78,6 +117,34 @@ thinq_key_default: thinq-key-default-state {
 		drive-strength = <2>;
 		bias-pull-up;
 	};
+
+	sde_dsi_active: sde-dsi-active-state {
+		pins = "gpio6";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+	};
+
+	sde_dsi_sleep: sde-dsi-sleep-state {
+		pins = "gpio6";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
+	sde_te_active: sde-te-active-state {
+		pins = "gpio10";
+		function = "mdp_vsync";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	sde_te_sleep: sde-te-sleep-state {
+		pins = "gpio10";
+		function = "mdp_vsync";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
 };
 
 &uart6 {

-- 
2.51.0

On 9/17/25 3:09 AM, Paul Sajna wrote:
> And supporting msm drm nodes, including backlight
> 
> Signed-off-by: Paul Sajna <sajattack@postmarketos.org>
> Co-developed-by: Amir Dahan <system64fumo@protonmail.com>
> Signed-off-by: Amir Dahan <system64fumo@protonmail.com>
> ---

[...]

> +	display_panel: panel@0 {
> +		reg = <0>;
> +		compatible = "lg,sw49410";
> +
> +		backlight = <&pmi8998_wled>;
> +		reset-gpios = <&tlmm 6 GPIO_ACTIVE_LOW>;
> +
> +		pinctrl-names = "default", "sleep";
> +		pinctrl-0 = <&sde_dsi_active &sde_te_active>;
> +		pinctrl-1 = <&sde_dsi_sleep &sde_te_sleep>;

pinctrl-n
pinctrl-names

is preferred

[...]

> +	sde_te_active: sde-te-active-state {
> +		pins = "gpio10";
> +		function = "mdp_vsync";
> +		drive-strength = <2>;
> +		bias-disable;

The vendor kernel (for Sony phones at least) does pull-down on both
active and sleep, making them the same

Konrad

> +	};
> +
> +	sde_te_sleep: sde-te-sleep-state {
> +		pins = "gpio10";
> +		function = "mdp_vsync";
> +		drive-strength = <2>;
> +		bias-pull-down;
> +	};
>  };
>  
>  &uart6 {
>

September 17, 2025 at 1:50 PM, "Konrad Dybcio" <konrad.dybcio@oss.qualcomm.com mailto:konrad.dybcio@oss.qualcomm.com?to=%22Konrad%20Dybcio%22%20%3Ckonrad.dybcio%40oss.qualcomm.com%3E > wrote:

> The vendor kernel (for Sony phones at least) does pull-down on both
> active and sleep, making them the same
> 
> Konrad
> 
> > 
> > + };
> >  +
> >  + sde_te_sleep: sde-te-sleep-state {
> >  + pins = "gpio10";
> >  + function = "mdp_vsync";
> >  + drive-strength = <2>;
> >  + bias-pull-down;
> >  + };
> >  };
> >  
> >  &uart6 {
> >
>

https://github.com/LineageOS/android_kernel_lge_sdm845/blob/lineage-22.2/arch/arm64/boot/dts/lge/sdm845-judy/sdm845-judy_common/sdm845-judy_common-pinctrl.dtsi#L109-L148