[PATCH v1 1/1] arm64: dts: qcom: talos-evk: Add support for dual-channel LVDS panel

[Sudarshan Shetty <tessolveupstream@gmail.com>]

This patch introduces a new device tree for the QCS615 Talos
EVK platform with dual-channel LVDS display support.

The new DTS file (`talos-evk-lvds.dts`) is based on the existing
`talos-evk.dts` and extends it to enable a dual-channel LVDS display
configuration using the TI SN65DSI84 DSI-to-LVDS bridge.

where channel-A carries odd pixel and channel-B carries even pixel
on the QCS615 talos evk platform.

Signed-off-by: Sudarshan Shetty <tessolveupstream@gmail.com>
---
 arch/arm64/boot/dts/qcom/Makefile           |   1 +
 arch/arm64/boot/dts/qcom/talos-evk-lvds.dts | 128 ++++++++++++++++++++
 2 files changed, 129 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/talos-evk-lvds.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index d5a3dd98137d..6e7b04e67287 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -307,6 +307,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sm8750-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8750-qrd.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= talos-evk.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= talos-evk-dsi.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= talos-evk-lvds.dtb
 x1e001de-devkit-el2-dtbs	:= x1e001de-devkit.dtb x1-el2.dtbo
 dtb-$(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-evk-lvds.dts b/arch/arm64/boot/dts/qcom/talos-evk-lvds.dts
new file mode 100644
index 000000000000..7ba4ab96ada6
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/talos-evk-lvds.dts
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+/dts-v1/;
+#include "talos-evk.dts"
+
+/ {
+
+	backlight: backlight {
+		compatible = "gpio-backlight";
+		gpios = <&tlmm 115 GPIO_ACTIVE_HIGH>;
+		default-on;
+	};
+
+	lcd0_pwm_en {
+		compatible = "pwm-gpio";
+		gpios = <&tlmm 59 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&lcd0_bklt_pwm>;
+		pinctrl-names = "default";
+		#pwm-cells = <3>;
+	};
+
+	panel-lvds {
+		compatible = "auo,g133han01";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			/* LVDS A (Odd pixels) */
+			port@0 {
+				reg = <0>;
+				dual-lvds-odd-pixels;
+
+				lvds_panel_out_a: endpoint {
+					remote-endpoint = <&sn65dsi84_out_a>;
+				};
+			};
+
+			/* LVDS B (Even pixels) */
+			port@1 {
+				reg = <1>;
+				dual-lvds-even-pixels;
+
+				lvds_panel_out_b: endpoint {
+					remote-endpoint = <&sn65dsi84_out_b>;
+				};
+			};
+		};
+	};
+};
+
+&adv7535 {
+	status = "disabled";
+};
+
+&i2c1 {
+	clock-frequency = <400000>;
+
+	status = "okay";
+
+	sn65dsi84: sn65dsi84@2c {
+		compatible = "ti,sn65dsi84";
+		reg = <0x2c>;
+		enable-gpios = <&tlmm 42 GPIO_ACTIVE_HIGH>;
+		ti,dsi-lanes = <4>;
+		ti,lvds-format = "jeida-24";
+		ti,lvds-bpp = <24>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				sn65dsi84_in: endpoint {
+					data-lanes = <0 1 2 3>;
+					remote-endpoint = <&mdss_dsi0_out>;
+				};
+			};
+
+			port@2 {
+				reg = <2>;
+
+				sn65dsi84_out_a: endpoint {
+					data-lanes = <0 1 2 3>;
+					remote-endpoint = <&lvds_panel_out_a>;
+				};
+			};
+
+			port@3 {
+				reg = <3>;
+
+				sn65dsi84_out_b: endpoint {
+					data-lanes = <0 1 2 3>;
+					remote-endpoint = <&lvds_panel_out_b>;
+				};
+			};
+		};
+	};
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&vreg_l11a>;
+
+	status = "okay";
+};
+
+&mdss_dsi0_out {
+	remote-endpoint = <&sn65dsi84_in>;
+	data-lanes = <0 1 2 3>;
+};
+
+&tlmm {
+	lcd0_bklt_en: lcd0-bklt-en-state {
+		pins = "gpio115";
+		function = "gpio";
+		bias-disable;
+	};
+
+	lcd0_bklt_pwm: lcd0-bklt-pwm-state {
+		pins = "gpio59";
+		function = "gpio";
+		bias-disable;
+	};
+};
-- 
2.34.1