On Mon, Nov 17, 2014 at 12:23:33PM +0000, Lee Jones wrote:
> On Mon, 17 Nov 2014, gyungoh@xxxxxxxxx wrote:
>
> > From: Gyungoh Yoo <jack.yoo@xxxxxxxxxxxxxxx>
> >
> > Signed-off-by: Gyungoh Yoo <jack.yoo@xxxxxxxxxxxxxxx>
> > ---
> > Changes v7:
> > Nothing
> >
> > Changes v6:
> > Nothing
> >
> > Changes v5:
> > Nothing
> >
> > Changes v4:
> > Nothing
> >
> > Changes v3:
> > Nothing
> >
> > Changes v2:
> > Added reg attribute for I2C slave address
> >
> > .../video/backlight/sky81452-backlight.txt | 24 ++++++++++++++++++++++
> > 1 file changed, 24 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
> >
> > diff --git a/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt b/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
> > new file mode 100644
> > index 0000000..2c2d947
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
> > @@ -0,0 +1,24 @@
> > +SKY81452-backlight bindings
> > +
> > +Required properties:
> > +- compatible : Must be "skyworks,sky81452-backlight"
> > +
> > +Optional properties:
> > +- name : Name of backlight device. Default is 'lcd-backlight'.
> > +- gpio-enable : GPIO to use to EN pin.
> > +- enable : Enable mask for current sink channel 1 to 6.
> > +- ignore-pwm : Ignore both PWM input
> > +- dpwm-mode : Enable DPWM dimming mode, otherwise Analog dimming mode
> > +- phase-shift : Enable phase shift mode
> > +- ovp-level : Over-voltage protection level. Should be between 14 or 28V.
> > +- short-detection-threshold : It should be one of 4, 5, 6 and 7V.
> > +- boost-current-limit : It should be one of 800, 1100 and 1500mA.
>
> These are going to need some serious reviewing from the DT guys. Each
> property should either have a vendor prefix or be made generic and
> placed in the generic DT documentation for the subsystem. The name
> 'enable' is far to generic we don't tend to put masks in DT. There
> is already a generic property for GPIO enable pins.
I see. I will rename the properties with the vendor prefix
and modify the name for GPIO enable pin to use 'gpios'
>
> > +Example:
> > +
> > + backlight {
> > + compatible = "skyworks,sky81452-backlight";
> > + name = "pwm-backlight";
> > + enable = <0x3F>;
>
> Lower case.
>
> > + ignore-pwm;
>
> You should probably demonstrate more of your properties here.
I will make up the example.
Thank you for your comments.
>
> > + };
>
> --
> Lee Jones
> Linaro STMicroelectronics Landing Team Lead
> Linaro.org │ Open source software for ARM SoCs
> Follow Linaro: Facebook | Twitter | Blog
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