From: Stephan Gerhold <stephan@gerhold.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@gerhold.net>
Co-developed-by: Jakob Hauser <jahau@rocketmail.com>
Signed-off-by: Jakob Hauser <jahau@rocketmail.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

On Thu, 14 Nov 2024 23:07:18 +0100, Jakob Hauser wrote:
> From: Stephan Gerhold <stephan@gerhold.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@gerhold.net>
> Co-developed-by: Jakob Hauser <jahau@rocketmail.com>
> Signed-off-by: Jakob Hauser <jahau@rocketmail.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(+)
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


New warnings running 'make CHECK_DTBS=y qcom/msm8916-samsung-serranove.dtb' for 20241114220718.12248-1-jahau@rocketmail.com:

arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dtb: /soc@0/power-manager@b088000: failed to match any schema with compatible: ['qcom,msm8916-acc']
arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dtb: /soc@0/power-manager@b098000: failed to match any schema with compatible: ['qcom,msm8916-acc']
arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dtb: /soc@0/power-manager@b0a8000: failed to match any schema with compatible: ['qcom,msm8916-acc']
arch/arm64/boot/dts/qcom/msm8916-samsung-serranove.dtb: /soc@0/power-manager@b0b8000: failed to match any schema with compatible: ['qcom,msm8916-acc']