linux-kernel - [PATCH] arm64: dts: qcom: msm8916-samsung-serranove: Add display panel

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Message-Id: <20241114220718.12248-1-jahau@rocketmail.com>
Date: Thu, 14 Nov 2024 23:07:18 +0100
From: Jakob Hauser <jahau@...ketmail.com>
To: Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konradybcio@...nel.org>
Cc: Stephan Gerhold <stephan@...hold.net>,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	phone-devel@...r.kernel.org,
	~postmarketos/upstreaming@...ts.sr.ht,
	Jakob Hauser <jahau@...ketmail.com>
Subject: [PATCH] arm64: dts: qcom: msm8916-samsung-serranove: Add display panel

From: Stephan Gerhold <stephan@...hold.net>

Add the Samsung S6E88A0-AMS427AP24 panel to the device tree for the
Samsung Galaxy S4 Mini Value Edition. By default the panel displays
everything horizontally flipped, so add "flip-horizontal" to the panel
node to correct that.

Signed-off-by: Stephan Gerhold <stephan@...hold.net>
Co-developed-by: Jakob Hauser <jahau@...ketmail.com>
Signed-off-by: Jakob Hauser <jahau@...ketmail.com>
---
Patch base is kernel/git/qcom/linux.git current branch "arm64-for-6.13".

The panel driver was recently added to linux-next:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c?h=next-20241101

The associated dt-binding in linux-next is:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/Documentation/devicetree/bindings/display/panel/samsung,s6e88a0-ams427ap24.yaml?h=next-20241101
---
 .../dts/qcom/msm8916-samsung-serranove.dts    | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts b/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts
index 5ce8f1350abc..caad1dead2e0 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dts
@@ -321,6 +321,41 @@ &blsp_uart2 {
 	status = "okay";
 };
 
+&gpu {
+	status = "okay";
+};
+
+&mdss {
+	status = "okay";
+};
+
+&mdss_dsi0 {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&mdss_default>;
+	pinctrl-1 = <&mdss_sleep>;
+
+	panel@0 {
+		compatible = "samsung,s6e88a0-ams427ap24";
+		reg = <0>;
+
+		vdd3-supply = <&pm8916_l17>;
+		vci-supply = <&pm8916_l6>;
+		reset-gpios = <&tlmm 25 GPIO_ACTIVE_LOW>;
+		flip-horizontal;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&mdss_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss_dsi0_out {
+	data-lanes = <0 1>;
+	remote-endpoint = <&panel_in>;
+};
+
 &mpss_mem {
 	reg = <0x0 0x86800000 0x0 0x5a00000>;
 };
@@ -330,6 +365,13 @@ &pm8916_resin {
 	linux,code = <KEY_VOLUMEDOWN>;
 };
 
+&pm8916_rpm_regulators {
+	pm8916_l17: l17 {
+		regulator-min-microvolt = <2850000>;
+		regulator-max-microvolt = <2850000>;
+	};
+};
+
 &pm8916_vib {
 	status = "okay";
 };
@@ -425,6 +467,22 @@ imu_irq_default: imu-irq-default-state {
 		bias-disable;
 	};
 
+	mdss_default: mdss-default-state {
+		pins = "gpio25";
+		function = "gpio";
+
+		drive-strength = <8>;
+		bias-disable;
+	};
+
+	mdss_sleep: mdss-sleep-state {
+		pins = "gpio25";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
 	muic_i2c_default: muic-i2c-default-state {
 		pins = "gpio105", "gpio106";
 		function = "gpio";
-- 
2.39.5