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Subject[PATCH v3] ARM: dts: r8a7742-iwg21d-q7: Add LCD support
Date
The iwg21d comes with a 7" capacitive touch screen, therefore
add support for it.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v2->v3
* Renamed vcc-supply to power-supply due to recent bindings changes [4]
(similar changes done for G1[MN] [5]).
* Restored RB tags from Laurent and Geert.
* Sorted the DTS

v1->v2
* This patch is part of series [1] (rest of the patches have be accepted
by Geert [2]).
* Added regulator for lvds
* Added reset pin for touchpanel
* This patch is based on series [3]

[1] https://patchwork.kernel.org/project/linux-renesas-soc/list/
?series=330277
[2] https://git.kernel.org/pub/scm/linux/kernel/git/geert/
renesas-devel.git/log/?h=renesas-arm-dt-for-v5.10
[3] https://patchwork.kernel.org/project/linux-renesas-soc/list/
?series=330957
[4] https://patchwork.kernel.org/patch/11792205/
[5] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/
commit/?h=next-20200929&id=08d7a73fffb6769b1cf2278bf697e692daba3abf
---
arch/arm/boot/dts/r8a7742-iwg21d-q7.dts | 99 +++++++++++++++++++++++++
1 file changed, 99 insertions(+)

diff --git a/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts b/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
index c2c05c9685d1..0063ef92f50e 100644
--- a/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
+++ b/arch/arm/boot/dts/r8a7742-iwg21d-q7.dts
@@ -30,6 +30,7 @@

/dts-v1/;
#include "r8a7742-iwg21m.dtsi"
+#include <dt-bindings/pwm/pwm.h>

/ {
model = "iWave Systems RainboW-G21D-Qseven board based on RZ/G1H";
@@ -52,6 +53,16 @@
clock-frequency = <26000000>;
};

+ lcd_backlight: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&tpu 2 5000000 0>;
+ brightness-levels = <0 4 8 16 32 64 128 255>;
+ pinctrl-0 = <&backlight_pins>;
+ pinctrl-names = "default";
+ default-brightness-level = <7>;
+ enable-gpios = <&gpio3 11 GPIO_ACTIVE_HIGH>;
+ };
+
leds {
compatible = "gpio-leds";

@@ -62,6 +73,41 @@
};
};

+ lvds-receiver {
+ compatible = "ti,ds90cf384a", "lvds-decoder";
+ power-supply = <&vcc_3v3_tft1>;
+
+ 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>;
+ power-supply = <&vcc_3v3_tft1>;
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&lvds_receiver_out>;
+ };
+ };
+ };
+
reg_1p5v: 1p5v {
compatible = "regulator-fixed";
regulator-name = "1P5V";
@@ -85,6 +131,17 @@
};
};

+ vcc_3v3_tft1: regulator-panel {
+ compatible = "regulator-fixed";
+
+ regulator-name = "vcc-3v3-tft1";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ enable-active-high;
+ startup-delay-us = <500>;
+ gpio = <&gpio5 28 GPIO_ACTIVE_HIGH>;
+ };
+
vcc_sdhi2: regulator-vcc-sdhi2 {
compatible = "regulator-fixed";

@@ -139,6 +196,16 @@
VDDIO-supply = <&reg_3p3v>;
VDDD-supply = <&reg_1p5v>;
};
+
+ touch: touchpanel@38 {
+ compatible = "edt,edt-ft5406";
+ reg = <0x38>;
+ interrupt-parent = <&gpio0>;
+ interrupts = <24 IRQ_TYPE_EDGE_FALLING>;
+ /* GP1_29 is also shared with audio codec reset pin */
+ reset-gpios = <&gpio1 29 GPIO_ACTIVE_LOW>;
+ vcc-supply = <&vcc_3v3_tft1>;
+ };
};

&can1 {
@@ -152,6 +219,18 @@
status = "okay";
};

+&du {
+ status = "okay";
+};
+
+&gpio0 {
+ touch-interrupt {
+ gpio-hog;
+ gpios = <24 GPIO_ACTIVE_LOW>;
+ input;
+ };
+};
+
&gpio1 {
can-trx-en-gpio{
gpio-hog;
@@ -167,6 +246,17 @@
status = "okay";
};

+&lvds0 {
+ status = "okay";
+ ports {
+ port@1 {
+ lvds0_out: endpoint {
+ remote-endpoint = <&lvds_receiver_in>;
+ };
+ };
+ };
+};
+
&msiof0 {
pinctrl-0 = <&msiof0_pins>;
pinctrl-names = "default";
@@ -229,6 +319,11 @@
function = "avb";
};

+ backlight_pins: backlight {
+ groups = "tpu0_to2";
+ function = "tpu0";
+ };
+
can1_pins: can1 {
groups = "can1_data_b";
function = "can1";
@@ -335,6 +430,10 @@
shared-pin;
};

+&tpu {
+ status = "okay";
+};
+
&usbphy {
status = "okay";
};
--
2.17.1
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