[PATCH 4.4.y-cip 9/9] ARM: dts: iwg22d-sodimm: Enable LCD panel


Biju Das <biju.das.jz@...>
 

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(+)

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";
};
--
2.17.1

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