[PATCH v2 3/6] arm64: dts: qcom: talos-lyra-evk: Add RPi 7-inch DSI panel overlay

[anand.tiwari at oss.qualcomm.com]

From: Shashank Maurya <shashank.maurya at oss.qualcomm.com>

Add a DT overlay to enable Raspberry Pi 7-inch DSI panel connected
to DSI 22pin on the carrier card.

DSI0 from SOC is routed through MUX which can be selected by DIP
switch S1016.5 ON for enabling this 22pin connector.

Add the regulator and backlight controller at I2C2 address 0x45,
Goodix GT911 touch controller, panel power and reset control, and
a 2-lane DSI connection.

Disable the default HDMI bridge and connector in favour of the RPi
DSI panel.

Signed-off-by: Shashank Maurya <shashank.maurya at oss.qualcomm.com>
Signed-off-by: Anand Tiwari <anand.tiwari at oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio at oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/Makefile                  |  5 ++
 .../qcom/talos-lyra-evk-raspberrypi-dsi-7inch.dtso | 88 ++++++++++++++++++++++
 2 files changed, 93 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 709a96ece14e..298054f47046 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -480,6 +480,11 @@ dtb-$(CONFIG_ARCH_QCOM)	+= talos-lyra-evk-el2.dtb
 talos-lyra-evk-dlc0697-dtbs := talos-lyra-evk.dtb talos-lyra-evk-dlc0697.dtbo
 dtb-$(CONFIG_ARCH_QCOM)     += talos-lyra-evk-dlc0697.dtb
 dtb-$(CONFIG_ARCH_QCOM)     += talos-lyra-evk-dlc0697.dtbo
+
+talos-lyra-evk-raspberrypi-dsi-7inch-dtbs := \
+        talos-lyra-evk.dtb talos-lyra-evk-raspberrypi-dsi-7inch.dtbo
+dtb-$(CONFIG_ARCH_QCOM) += talos-lyra-evk-raspberrypi-dsi-7inch.dtb
+dtb-$(CONFIG_ARCH_QCOM) += talos-lyra-evk-raspberrypi-dsi-7inch.dtbo
 x1e001de-devkit-el2-dtbs	:= x1e001de-devkit.dtb x1-el2.dtbo
 dtb-$(CONFIG_ARCH_QCOM)	+= x1e001de-devkit.dtb x1e001de-devkit-el2.dtb
 x1e78100-lenovo-thinkpad-t14s-el2-dtbs	:= x1e78100-lenovo-thinkpad-t14s.dtb x1-el2.dtbo
diff --git a/arch/arm64/boot/dts/qcom/talos-lyra-evk-raspberrypi-dsi-7inch.dtso b/arch/arm64/boot/dts/qcom/talos-lyra-evk-raspberrypi-dsi-7inch.dtso
new file mode 100644
index 000000000000..6dafdbb87d3d
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/talos-lyra-evk-raspberrypi-dsi-7inch.dtso
@@ -0,0 +1,88 @@
+// 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_display>;
+		pwms = <&mcu 0 255 0>;
+	};
+
+	reg_display: regulator-display {
+		compatible = "regulator-fixed";
+		regulator-name = "rpi-display";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	reg_dsi_touch: regulator-dsi-touch {
+		compatible = "regulator-fixed";
+		gpio = <&mcu 1 GPIO_ACTIVE_HIGH>;
+		regulator-name = "rpi-touch";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		startup-delay-us = <50000>;
+		enable-active-high;
+	};
+};
+
+&hdmi_bridge {
+	status = "disabled";
+};
+
+&hdmi_connector {
+	status = "disabled";
+};
+
+&i2c2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	mcu: gpio at 45 {
+		compatible = "raspberrypi,touchscreen-panel-regulator-v2";
+		reg = <0x45>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		#pwm-cells = <3>;
+	};
+
+	touchscreen at 5d {
+		compatible = "goodix,gt911";
+		reg = <0x5d>;
+		AVDD28-supply = <&reg_dsi_touch>;
+		touchscreen-size-x = <720>;
+		touchscreen-size-y = <1280>;
+	};
+};
+
+&mdss_dsi0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	panel at 0 {
+		compatible = "raspberrypi,dsi-7inch", "ilitek,ili9881c";
+		reg = <0>;
+
+		reset-gpios = <&mcu 0 GPIO_ACTIVE_LOW>;
+		power-supply = <&reg_display>;
+		iovcc-supply = <&vreg_s4a>;
+		backlight = <&display_bl>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&mdss_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss_dsi0_out {
+	remote-endpoint = <&panel_in>;
+	data-lanes = <0 1>;
+};

-- 
2.55.0