linux-kernel - [PATCH 05/11] arm64: dts: qcom: sdm845-lg-judyln: Add display panel

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Message-Id: <20250913-judyln-dts-v1-5-23b4b7790dce@postmarketos.org>
Date: Sat, 13 Sep 2025 16:56:38 -0700
From: Paul Sajna <sajattack@...tmarketos.org>
To: 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>, David Heidelberg <david@...t.cz>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Amir Dahan <system64fumo@...tonmail.com>, 
 Christopher Brown <crispybrown@...il.com>, 
 Paul Sajna <sajattack@...tmarketos.org>
Subject: [PATCH 05/11] arm64: dts: qcom: sdm845-lg-judyln: Add display
 panel

And supporting msm drm nodes, including backlight
Depends on https://lore.kernel.org/all/20250910-judyln-panel-v1-1-825c74403bbb@postmarketos.org/T/#r9a976ca01e309b6c03100e984a26a0ffc2fe2002

Signed-off-by: Paul Sajna <sajattack@...tmarketos.org>
Co-authored-by: Amir Dahan <system64fumo@...tonmail.com>
Signed-off-by: Amir Dahan <system64fumo@...tonmail.com>
---
 arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi |  4 +-
 arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts  | 99 ++++++++++++++++++++++++++
 2 files changed, 101 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
index df826bca2bef5e3f85cf49708020a47b8d6bd8bb..1bf2f2b0e85de174959ec2467076a95f471a59d4 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-lg-common.dtsi
@@ -461,8 +461,8 @@ &cdsp_pas {
 	status = "okay";
 };
 
-&dispcc {
-	status = "disabled";
+&gmu {
+	status = "okay";
 };
 
 &gcc {
diff --git a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
index da093b581c857c5acc9f0e72c9d3519977e13eab..fae85d4c1520e044d8166bb22a8f5762fda250b2 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-lg-judyln.dts
@@ -23,6 +23,13 @@ framebuffer@...00000 {
 			format = "a8r8g8b8";
 			lab-supply = <&lab>;
 			ibb-supply = <&ibb>;
+
+			panel = <&fb_panel>;
+
+			fb_panel: fb-panel {
+				width-mm = <72>;
+				height-mm = <153>;
+			};
 		};
 	};
 
@@ -72,6 +79,70 @@ &pmi8998_charger {
 	monitored-battery = <&battery>;
 };
 
+&ibb {
+	regulator-min-microvolt = <4600000>;
+	regulator-max-microvolt = <6000000>;
+	regulator-over-current-protection;
+	regulator-pull-down;
+	regulator-soft-start;
+	regulator-always-on;
+	qcom,discharge-resistor-kohms = <300>;
+};
+
+&lab {
+	regulator-min-microvolt = <4600000>;
+	regulator-max-microvolt = <6000000>;
+	regulator-over-current-protection;
+	regulator-pull-down;
+	regulator-soft-start;
+};
+
+&mdss {
+	status = "okay";
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&vdda_mipi_dsi0_1p2>;
+
+	status = "okay";
+
+	display_panel: panel@0 {
+		reg = <0>;
+		compatible = "lg,sw49410";
+
+		ibb-supply = <&ibb>;
+		lab-supply = <&lab>;
+
+		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>;
+};
+
+&pmi8998_wled {
+	status = "okay";
+};
+
 &tlmm {
 	thinq_key_default: thinq-key-default-state {
 		pins = "gpio89";
@@ -80,6 +151,34 @@ 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