From 6fd6d6f6a2f06cb921a0185072854c3d35d86ff1 Mon Sep 17 00:00:00 2001 From: Adam Ford Date: Tue, 2 Apr 2019 14:25:46 -0500 Subject: [PATCH] ARM: dts: imx6q-logicpd: Shutdown LCD regulator during suspend The LCD power sequencer is very finicky. The backlight cannot be driven until after the sequencer is done. Until now, the regulators were marked with 'regulator-always-on' to make sure it came up before the backlight. This patch allows the LCD regulators to power down and prevent the backlight from being used again until the sequencer is ready. This reduces standby power consumption by ~100mW. Signed-off-by: Adam Ford Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6q-logicpd.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/imx6q-logicpd.dts b/arch/arm/boot/dts/imx6q-logicpd.dts index 45eb0b7f75f8..d96ae54be338 100644 --- a/arch/arm/boot/dts/imx6q-logicpd.dts +++ b/arch/arm/boot/dts/imx6q-logicpd.dts @@ -21,6 +21,8 @@ panel-lvds0 { compatible = "okaya,rs800480t-7x0gp"; + power-supply = <®_lcd_reset>; + backlight = <&backlight>; port { panel_in_lvds0: endpoint { @@ -38,7 +40,6 @@ regulator-max-microvolt = <3300000>; gpio = <&gpio4 17 GPIO_ACTIVE_HIGH>; enable-active-high; - regulator-always-on; vin-supply = <®_3v3>; startup-delay-us = <500000>; }; @@ -52,7 +53,6 @@ regulator-max-microvolt = <3300000>; gpio = <&gpio5 2 GPIO_ACTIVE_HIGH>; enable-active-high; - regulator-always-on; vin-supply = <®_lcd>; }; };