[PATCH v2 2/2] arm64: dts: qcom: lemans-evk: Add Raspberry Pi 7-inch DSI panel overlay

[Shashank Maurya]

Add a DT overlay for the Raspberry Pi 7" DSI touchscreen panel on
Lemans EVK, using mdss0_dsi0 with 2 data lanes and the panel MCU on
I2C1.

Signed-off-by: Shashank Maurya <shashank.maurya@xxxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/Makefile                  |  2 +
 .../dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso | 83 ++++++++++++++++++++++
 2 files changed, 85 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 38554195fc98..d17b46a043ad 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -57,6 +57,8 @@ lemans-evk-el2-dtbs := lemans-evk.dtb lemans-el2.dtbo
 dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-el2.dtb
 lemans-evk-ifp-mezzanine-dtbs	:= lemans-evk.dtb lemans-evk-ifp-mezzanine.dtbo
 dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-ifp-mezzanine.dtb
+lemans-evk-raspberrypi-dsi-7inch-dtbs	:= lemans-evk.dtb lemans-evk-raspberrypi-dsi-7inch.dtbo
+dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-raspberrypi-dsi-7inch.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= mahua-crd.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= milos-fairphone-fp6.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= milos-nothing-asteroids.dtb
diff --git a/arch/arm64/boot/dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso b/arch/arm64/boot/dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso
new file mode 100644
index 000000000000..14743b3c3863
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	display_bl: backlight {
+		compatible = "pwm-backlight";
+		power-supply = <&reg_dsi_touch>;
+		pwms = <&reg_backlight 0 255 0>;
+	};
+
+	reg_dsi_touch: regulator-touch {
+		compatible = "regulator-fixed";
+		regulator-name = "rpi-dsi-touch";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&expander3 1 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+};
+
+&i2c1 {
+	qcom,load-firmware;
+	qcom,xfer-mode = <1>;
+
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	reg_backlight: reg_backlight@45 {
+		compatible = "raspberrypi,touchscreen-panel-regulator-v2";
+		reg = <0x45>;
+
+		vcc-supply = <&reg_dsi_touch>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		#pwm-cells = <3>;
+	};
+};
+
+&mdss0_dsi0 {
+	vdda-supply = <&vreg_l1c>;
+
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	panel@0 {
+		compatible = "raspberrypi,dsi-7inch";
+		reg = <0>;
+
+		reset-gpios = <&reg_backlight 0 GPIO_ACTIVE_LOW>;
+		power-supply = <&reg_dsi_touch>;
+		iovcc-supply = <&reg_dsi_touch>;
+		backlight = <&display_bl>;
+
+		port {
+			panel0_in: endpoint {
+				remote-endpoint = <&mdss0_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss0_dsi0_out {
+	remote-endpoint = <&panel0_in>;
+	data-lanes = <0 1>;
+};
+
+&mdss0_dsi0_phy {
+	vdds-supply = <&vreg_l4a>;
+
+	status = "okay";
+};

-- 
2.34.1