ARM: dts: iwg20d-q7-common: Add LCD support

The iwg20d comes with a 7" capacitive touch screen, therefore
add support for it.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/1573660292-10629-11-git-send-email-fabrizio.castro@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/boot/dts/iwg20d-q7-common.dtsi

@@ -46,6 +46,49 @@ audio_clock: audio_clock {
 		clock-frequency = <26000000>;
 	};
 
+	lcd_backlight: backlight {
+		compatible = "pwm-backlight";
+
+		pwms = <&pwm3 0 5000000 0>;
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <7>;
+		enable-gpios = <&gpio5 14 GPIO_ACTIVE_HIGH>;
+	};
+
+	lvds-receiver {
+		compatible = "ti,ds90cf384a", "lvds-decoder";
+		powerdown-gpios = <&gpio7 25 GPIO_ACTIVE_LOW>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				lvds_receiver_in: endpoint {
+					remote-endpoint = <&lvds0_out>;
+				};
+			};
+			port@1 {
+				reg = <1>;
+				lvds_receiver_out: endpoint {
+					remote-endpoint = <&panel_in>;
+				};
+			};
+		};
+	};
+
+	panel {
+		compatible = "edt,etm0700g0dh6";
+		backlight = <&lcd_backlight>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&lvds_receiver_out>;
+			};
+		};
+	};
+
 	reg_1p5v: 1p5v {
 		compatible = "regulator-fixed";
 		regulator-name = "1P5V";
@@ -120,6 +163,18 @@ &cmt0 {
 	status = "okay";
 };
 
+&du {
+	status = "okay";
+};
+
+&gpio2 {
+	touch-interrupt {
+		gpio-hog;
+		gpios = <12 GPIO_ACTIVE_LOW>;
+		input;
+	};
+};
+
 &hsusb {
 	status = "okay";
 	pinctrl-0 = <&usb0_pins>;
@@ -147,6 +202,25 @@ sgtl5000: codec@a {
 		VDDIO-supply = <&reg_3p3v>;
 		VDDD-supply = <&reg_1p5v>;
 	};
+
+	touch: touchpanel@38 {
+		compatible = "edt,edt-ft5406";
+		reg = <0x38>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
+	};
+};
+
+&lvds0 {
+	status = "okay";
+
+	ports {
+		port@1 {
+			lvds0_out: endpoint {
+				remote-endpoint = <&lvds_receiver_in>;
+			};
+		};
+	};
 };
 
 &pci0 {
@@ -180,6 +254,11 @@ i2c2_pins: i2c2 {
 		function = "i2c2";
 	};
 
+	pwm3_pins: pwm3 {
+		groups = "pwm3";
+		function = "pwm3";
+	};
+
 	scif0_pins: scif0 {
 		groups = "scif0_data_d";
 		function = "scif0";
@@ -218,6 +297,12 @@ usb1_pins: usb1 {
 	};
 };
 
+&pwm3 {
+	pinctrl-0 = <&pwm3_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &rcar_sound {
 	pinctrl-0 = <&sound_pins>;
 	pinctrl-names = "default";

arch/arm/boot/dts/iwg20d-q7-dbcm-ca.dtsi

@@ -39,7 +39,6 @@ &can1 {
 &du {
 	pinctrl-0 = <&du_pins>;
 	pinctrl-names = "default";
-	status = "okay";
 
 	ports {
 		port@0 {