As per the iWave RZ/G1M schematic, the signal LVDS_PPEN controls supply voltage for touch panel, LVDS receiver and RGB LCD panel. Add regulator for these device nodes and remove powerdown-gpios property from lvds-receiver node as it results in touch controller driver probe failure. Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> --- v1->v2 : Add regulator in touch panel, LVDS receiver and RGB LCD panel device nodes v1 : https://patchwork.kernel.org/patch/11705819/ --- arch/arm/boot/dts/iwg20d-q7-common.dtsi | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/boot/dts/iwg20d-q7-common.dtsi b/arch/arm/boot/dts/iwg20d-q7-common.dtsi index 4c8b9a6b0125..056f93119d8a 100644 --- a/arch/arm/boot/dts/iwg20d-q7-common.dtsi +++ b/arch/arm/boot/dts/iwg20d-q7-common.dtsi @@ -57,6 +57,7 @@ lvds-receiver { compatible = "ti,ds90cf384a", "lvds-decoder"; + vcc-supply = <&vcc_3v3_tft1>; ports { #address-cells = <1>; @@ -80,6 +81,7 @@ panel { compatible = "edt,etm0700g0dh6"; backlight = <&lcd_backlight>; + power-supply = <&vcc_3v3_tft1>; port { panel_in: endpoint { @@ -112,6 +114,17 @@ }; }; + vcc_3v3_tft1: regulator-panel { + compatible = "regulator-fixed"; + + regulator-name = "Panel Vcc"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + enable-active-high; + startup-delay-us = <70000>; + gpio = <&gpio7 25 GPIO_ACTIVE_HIGH>; + }; + vcc_sdhi1: regulator-vcc-sdhi1 { compatible = "regulator-fixed"; @@ -206,6 +219,7 @@ reg = <0x38>; interrupt-parent = <&gpio2>; interrupts = <12 IRQ_TYPE_EDGE_FALLING>; + vcc-supply = <&vcc_3v3_tft1>; }; }; -- 2.17.1
