[4.4.y-cip,9/9] ARM: dts: iwg22d-sodimm: Enable LCD panel
diff mbox series

Message ID 20200728104330.6182-10-biju.das.jz@bp.renesas.com
State Accepted
Delegated to: Nobuhiro Iwamatsu
Headers show
Series
  • Add LCD Panel support for RZ/G1E board
Related show

Commit Message

Biju Das July 28, 2020, 10:43 a.m. UTC
From: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>

commit 7f61dff1ed915c44845d6865d295853b1c39b6d7 upstream.

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.

The two variants of the iW-G22D should be mutually exclusive, therefore
this patch also disables the RGB LCD display when the HDMI extension board
is used.

Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Link: https://lore.kernel.org/r/1583239490-8837-1-git-send-email-marian-cristian.rotariu.rb@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
[Removed enable-active-high property to make backlight to work on 4.4.]
---
 .../dts/r8a7745-iwg22d-sodimm-dbhd-ca.dts     |  6 ++
 arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts   | 59 +++++++++++++++++++
 2 files changed, 65 insertions(+)

Patch
diff mbox series

diff --git a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm-dbhd-ca.dts b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm-dbhd-ca.dts
index 654d28b629e5..b01405fc1b49 100644
--- a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm-dbhd-ca.dts
+++ b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm-dbhd-ca.dts
@@ -109,6 +109,12 @@ 
 	};
 };
 
+&lcd_panel {
+	status = "disabled";
+
+	/delete-node/ port;
+};
+
 &pfc {
 	can1_pins: can1 {
 		groups = "can1_data_b";
diff --git a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
index 94e9088f6b40..1e331d1e414b 100644
--- a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
+++ b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
@@ -33,6 +33,7 @@ 
 
 /dts-v1/;
 #include "r8a7745-iwg22m.dtsi"
+#include <dt-bindings/pwm/pwm.h>
 
 / {
 	model = "iWave Systems RainboW-G22D-SODIMM board based on RZ/G1E";
@@ -82,6 +83,48 @@ 
 		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>;
+	};
+
+	backlight_lcd: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&tpu 3 5000000 PWM_POLARITY_INVERTED>;
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <7>;
+	};
+
+	lcd_panel: lcd {
+		compatible = "edt,etm043080dh6gp";
+		power-supply = <&vccq_panel>;
+		backlight = <&backlight_lcd>;
+
+		port {
+			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>;
+			};
+		};
+	};
 };
 
 &can0 {
@@ -117,11 +160,21 @@ 
 };
 
 &pfc {
+	backlight_pins: backlight {
+		groups = "tpu_to3_c";
+		function = "tpu";
+	};
+
 	can0_pins: can0 {
 		groups = "can0_data";
 		function = "can0";
 	};
 
+	du0_pins: du0 {
+		groups = "du0_rgb666", "du0_sync", "du0_disp", "du0_clk0_out";
+		function = "du0";
+	};
+
 	hscif1_pins: hscif1 {
 		groups = "hscif1_data", "hscif1_ctrl";
 		function = "hscif1";
@@ -233,6 +286,12 @@ 
 	shared-pin;
 };
 
+&tpu {
+	pinctrl-0 = <&backlight_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &usbphy {
 	status = "okay";
 };