| Message ID | 1363719573-20926-8-git-send-email-achew@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, 2013-03-19 at 11:59 -0700, Andrew Chew wrote: > 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 <achew@nvidia.com> > --- > 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 <linux@prisktech.co.nz> Regards Tony P
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>; }; };
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 <achew@nvidia.com> --- arch/arm/boot/dts/wm8850-w70v2.dts | 6 ++++++ 1 file changed, 6 insertions(+)