From: Biju Das biju.das.jz@bp.renesas.com
[ Upstream commit 08d7a73fffb6769b1cf2278bf697e692daba3abf ]
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: 6f89dd9e9325 ("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 Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/boot/dts/iwg20d-q7-common.dtsi | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/iwg20d-q7-common.dtsi b/arch/arm/boot/dts/iwg20d-q7-common.dtsi index ebbe1518ef8a6..63cafd220dba1 100644 --- a/arch/arm/boot/dts/iwg20d-q7-common.dtsi +++ b/arch/arm/boot/dts/iwg20d-q7-common.dtsi @@ -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>; }; };