[PATCH 1/2] ARM: dts: iwg22d-sodimm: enable LCD panel

[Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>]

On the Generic SODIMM Development Platform there is an RGB LCD panel
directly connected to the DU output. It uses the TPU0 as backlight, one
GPIO pull-up configuration for power enable, R[2:7], G[2:7], B[2:7],
VSYNC, HSYNC, DU0_DISP and, DU0_CLK as inputs.

There is no encoder between the DU and the panel, therefore the default
connector driver is used.

Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts | 60 +++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
index ce6603b..878113a 100644
--- a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
+++ b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
@@ -79,6 +79,52 @@
 		states = <3300000 1
 			  1800000 0>;
 	};
+
+	vccq_panel: regulator-vccq-panel {
+		compatible = "regulator-fixed";
+		regulator-name = "Panel VccQ";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio1 13 GPIO_ACTIVE_LOW>;
+		enable-active-high;
+	};
+
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&tpu 3 5000000 GPIO_ACTIVE_LOW>;
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <7>;
+		pinctrl-0 = <&backlight_pins>;
+		pinctrl-names = "default";
+	};
+
+	lcd {
+		compatible = "edt,etm043080dh6gp", "simple-panel";
+		power-supply = <&vccq_panel>;
+
+		ports {
+			port@0 {
+				lcd_in: endpoint {
+					remote-endpoint = <&du_out_rgb0>;
+				};
+			};
+		};
+	};
+};
+
+&du {
+	pinctrl-0 = <&du0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+
+	ports {
+		port@0 {
+			endpoint {
+				remote-endpoint = <&lcd_in>;
+			};
+		};
+	};
 };
 
 &avb {
@@ -150,11 +196,21 @@
 		function = "avb";
 	};
 
+	backlight_pins: backlight {
+		renesas,groups = "tpu_to3";
+		renesas,function = "tpu";
+	};
+
 	can0_pins: can0 {
 		groups = "can0_data";
 		function = "can0";
 	};
 
+	du0_pins: du0 {
+		renesas,groups = "du0_rgb666", "du0_sync", "du0_disp", "du0_clk0_out";
+		renesas,function = "du0";
+	};
+
 	hscif1_pins: hscif1 {
 		groups = "hscif1_data", "hscif1_ctrl";
 		function = "hscif1";
@@ -230,6 +286,10 @@
 	shared-pin;
 };
 
+&tpu {
+	status = "okay";
+};
+
 &usbphy {
 	status = "okay";
 };
-- 
2.7.4