This reverts commit 1f45e8c6d0161f044d679f242fe7514e2625af4a. This 100 ms mystery delay is not on downstream kernels and no longer seems needed on upstream kernels either [1]. Presumably something in the meantime has made things better. A few possibilities for patches that have landed in the meantime that could have made this better are commit 3157694d8c7f ("pwm-backlight: Add support for PWM delays proprieties."), commit 5fb5caee92ba ("pwm-backlight: Enable/disable the PWM before/after LCD enable toggle."), and commit 6d5922dd0d60 ("ARM: dts: rockchip: set PWM delay backlight settings for Veyron") Let's revert and get our 100 ms back. [1] https://lkml.kernel.org/r/2226970.BAPq4liE1j@diego Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx> --- arch/arm/boot/dts/rk3288-veyron-jaq.dts | 1 - arch/arm/boot/dts/rk3288-veyron-jerry.dts | 1 - arch/arm/boot/dts/rk3288-veyron-minnie.dts | 1 - arch/arm/boot/dts/rk3288-veyron-speedy.dts | 1 - 4 files changed, 4 deletions(-) diff --git a/arch/arm/boot/dts/rk3288-veyron-jaq.dts b/arch/arm/boot/dts/rk3288-veyron-jaq.dts index fcd119168cb6..5411ce148890 100644 --- a/arch/arm/boot/dts/rk3288-veyron-jaq.dts +++ b/arch/arm/boot/dts/rk3288-veyron-jaq.dts @@ -24,7 +24,6 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; - startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; }; diff --git a/arch/arm/boot/dts/rk3288-veyron-jerry.dts b/arch/arm/boot/dts/rk3288-veyron-jerry.dts index 164561f04c1d..82ac9d23480e 100644 --- a/arch/arm/boot/dts/rk3288-veyron-jerry.dts +++ b/arch/arm/boot/dts/rk3288-veyron-jerry.dts @@ -26,7 +26,6 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; - startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; }; diff --git a/arch/arm/boot/dts/rk3288-veyron-minnie.dts b/arch/arm/boot/dts/rk3288-veyron-minnie.dts index b2cc70a08554..f29501d8ff07 100644 --- a/arch/arm/boot/dts/rk3288-veyron-minnie.dts +++ b/arch/arm/boot/dts/rk3288-veyron-minnie.dts @@ -33,7 +33,6 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; - startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; }; diff --git a/arch/arm/boot/dts/rk3288-veyron-speedy.dts b/arch/arm/boot/dts/rk3288-veyron-speedy.dts index 9b140db04456..a0f6fefc95f1 100644 --- a/arch/arm/boot/dts/rk3288-veyron-speedy.dts +++ b/arch/arm/boot/dts/rk3288-veyron-speedy.dts @@ -24,7 +24,6 @@ pinctrl-names = "default"; pinctrl-0 = <&lcd_enable_h>; regulator-name = "panel_regulator"; - startup-delay-us = <100000>; vin-supply = <&vcc33_sys>; }; -- 2.22.0.410.gd8fdbe21b5-goog