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ARM: dts: iwg20d-q7-common: Fix touch controller probe failure

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As per the iWave RZ/G1M schematic, the signal LVDS_PPEN controls the
supply voltage for the touch panel, LVDS receiver and RGB LCD panel. Add
a regulator for these device nodes and remove the powerdown-gpios
property from the lvds-receiver node as it results in a touch controller
driver probe failure.

Fixes: 6f89dd9e93 ("ARM: dts: iwg20d-q7-common: Add LCD support")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20200924080535.3641-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Biju Das 2020-09-24 09:05:35 +01:00 committed by Geert Uytterhoeven
parent 9123e3a74e
commit 08d7a73fff
1 changed files with 14 additions and 1 deletions
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15
arch/arm/boot/dts/iwg20d-q7-common.dtsi
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@ -57,7 +57,7 @@ lcd_backlight: backlight {
lvds-receiver {
compatible = "ti,ds90cf384a", "lvds-decoder";
powerdown-gpios = <&gpio7 25 GPIO_ACTIVE_LOW>;
power-supply = <&vcc_3v3_tft1>;
ports {
#address-cells = <1>;
@ -81,6 +81,7 @@ lvds_receiver_out: endpoint {
panel {
compatible = "edt,etm0700g0dh6";
backlight = <&lcd_backlight>;
power-supply = <&vcc_3v3_tft1>;
port {
panel_in: endpoint {
@ -113,6 +114,17 @@ sndcodec: simple-audio-card,codec {
};
};
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 = <&gpio7 25 GPIO_ACTIVE_HIGH>;
};
vcc_sdhi1: regulator-vcc-sdhi1 {
compatible = "regulator-fixed";
@ -207,6 +219,7 @@ touch: touchpanel@38 {
reg = <0x38>;
interrupt-parent = <&gpio2>;
interrupts = <12 IRQ_TYPE_EDGE_FALLING>;
vcc-supply = <&vcc_3v3_tft1>;
};
};