arm64: dts: ti: Add overlay for OLDI-LCD1EVM Display and touch screen

The OLDI-LCD1EVM add on board has Rockteck RK101II01D-CT panel with
integrated touch screen. The integrated touch screen is Goodix GT928.

Signed-off-by: Jyri Sarha <jsarha@ti.com>

arch/arm64/boot/dts/ti/Makefile

@@ -9,7 +9,8 @@
 DTC_FLAGS += -@
 
 dtb-$(CONFIG_ARCH_K3_AM6_SOC) += k3-am654-base-board.dtb \
-	k3-am654-gp.dtbo
+	k3-am654-gp.dtbo \
+	k3-am654-evm-oldi-lcd1evm.dtbo
 
 dtb-$(CONFIG_ARCH_K3_AM6_SOC) += $(shell grep -s incbin $(srctree)/$(src)/*.its | grep dtb | cut -d "\"" -f 2)
 

arch/arm64/boot/dts/ti/k3-am654-evm-oldi-lcd1evm.dtso

@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * OLDI-LCD1EVM Rocktech integrated panel and touch DT overlay for AM654-EVM.
+ *
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+  fragment@101 {
+	target-path = "/";
+
+	__overlay__ {
+		display0 {
+			compatible = "rockteck,rk101ii01d-ct";
+			backlight = <&lcd_bl>;
+			enable-gpios = <&pca9555 8 GPIO_ACTIVE_HIGH>;
+
+			port {
+				lcd_in0: endpoint {
+					remote-endpoint = <&oldi_out0>;
+				};
+			};
+		};
+
+		lcd_bl: backlight {
+			compatible = "pwm-backlight";
+			pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;
+			brightness-levels = <0 32 64 96 128 160 192 224 255>;
+			default-brightness-level = <8>;
+		};
+	};
+  };
+};
+
+&dss {
+	status = "ok";
+};
+
+&dss_ports {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	port@0 {
+		reg = <0>;
+
+		oldi_out0: endpoint {
+			remote-endpoint = <&lcd_in0>;
+		};
+	};
+};
+
+&main_i2c1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	gt928: touchscreen@14 {
+		status = "okay";
+		compatible = "goodix,gt928";
+		reg = <0x14>;
+
+		interrupt-parent = <&pca9554>;
+		interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+		touchscreen-size-x = <1280>;
+		touchscreen-size-y = <800>;
+
+		reset-gpios = <&pca9555 9 GPIO_ACTIVE_HIGH>;
+		irq-gpios = <&pca9554 3 GPIO_ACTIVE_HIGH>;
+	};
+};