[Bulk] [PATCH V4 7/9] ARM: vt8500: Provide regulator to pwm-backlight
From: Tony Prisk <hidden>
Date: 2013-03-20 18:18:35
Also in:
linux-samsung-soc, linux-tegra
On Tue, 2013-03-19 at 11:59 -0700, Andrew Chew wrote:
quoted hunk ↗ jump to hunk
The pwm-backlight driver now takes a mandatory regulator that is gotten during driver probe. Initialize a dummy regulator to satisfy this requirement. Signed-off-by: Andrew Chew <redacted> --- arch/arm/boot/dts/wm8850-w70v2.dts | 6 ++++++ 1 file changed, 6 insertions(+)diff --git a/arch/arm/boot/dts/wm8850-w70v2.dts b/arch/arm/boot/dts/wm8850-w70v2.dts index fcc660c..47a0b1a 100644 --- a/arch/arm/boot/dts/wm8850-w70v2.dts +++ b/arch/arm/boot/dts/wm8850-w70v2.dts@@ -37,11 +37,17 @@ }; }; + bl_en: fixed-regulator { + compatible = "regulator-fixed"; + regulator-name = "bl-en-supply"; + }; + backlight { compatible = "pwm-backlight"; pwms = <&pwm 0 50000 1>; /* duty inverted */ brightness-levels = <0 40 60 80 100 130 190 255>; default-brightness-level = <5>; + enable-supply = <&bl_en>; }; };
This board will use either <&gpio 0 7 0> or <&pinctrl 7 0>, dependant on the pinctrl driver patchset going through. If you want it to 'work', feel free to add a regulator for the <&gpio 0 7 0> case - otherwise just leave the dummy and I'll patch it later once the pinctrl driver is finished. I only know of one user who is disabling the backlight gpio at present, and he is doing it with a gpio-led node. The backlight is enabled by uboot on all boards with an LCD present, so this is just a power-saving feature for us - nothing breaks by having a dummy. Acked-by: Tony Prisk <redacted> Regards Tony P