2015-02-04 15:11:46

by Rob Herring

[permalink] [raw]
Subject: Re: [PATCH v10 4/6] devicetree: Add new SKY81452 backlight binding

On Fri, Jan 23, 2015 at 12:28 AM, <[email protected]> wrote:
> From: Gyungoh Yoo <[email protected]>
>
> Signed-off-by: Gyungoh Yoo <[email protected]>
> Acked-by: Bryan Wu <[email protected]>
> ---
> Changes v10:
> Nothing
>
> Changes v9:
> Nothing
>
> Changes v8:
> Renamed property names for backlight with vendor prefix
> Modified gpio-enable property to generic property for GPIO
> Made up the example for backlight DT
>
> Changes v7:
> Nothing
>
> Changes v6:
> Nothing
>
> Changes v5:
> Nothing
>
> Changes v4:
> Nothing
>
> Changes v3:
> Nothing
>
> Changes v2:
> Added reg attribute for I2C slave address

You did? Where is it?

> .../video/backlight/sky81452-backlight.txt | 29 ++++++++++++++++++++++
> 1 file changed, 29 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..8daebf5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
> @@ -0,0 +1,29 @@
> +SKY81452-backlight bindings
> +
> +Required properties:
> +- compatible : Must be "skyworks,sky81452-backlight"
> +
> +Optional properties:
> +- name : Name of backlight device. Default is 'lcd-backlight'.
> +- gpios : GPIO to use to EN pin.
> + See Documentation/devicetree/bindings/gpio/gpio.txt
> +- skyworks,en-channels : Enable mask for current sink channel 1 to 6.

Does led-sources property being added in 3.20 work for this?

> +- skyworks,ignore-pwm : Ignore both PWM input
> +- skyworks,dpwm-mode : Enable DPWM dimming mode, otherwise Analog dimming.
> +- skyworks,phase-shift : Enable phase shift mode
> +- skyworks,ovp-level : Over-voltage protection level.
> + Should be between 14 or 28V.

Please append units (-volt)

> +- skyworks,short-detection-threshold : It should be one of 4, 5, 6 and 7V.

Please append units (-volt)

> +- skyworks,current-limit : It should be 2300mA or 2750mA.

Please append units (-mA)

> +
> +Example:
> +
> + backlight {
> + compatible = "skyworks,sky81452-backlight";
> + name = "pwm-backlight";
> + skyworks,en-channels = <0x3f>;
> + skyworks,ignore-pwm;
> + skyworks,phase-shift;
> + skyworks,ovp-level = <20>;
> + skyworks,current-limit = <2300>;
> + };
> --
> 1.9.1
>


2015-02-05 04:59:24

by Gyungoh Yoo

[permalink] [raw]
Subject: Re: [PATCH v10 4/6] devicetree: Add new SKY81452 backlight binding

On Wed, Feb 04, 2015 at 09:11:22AM -0600, Rob Herring wrote:
> On Fri, Jan 23, 2015 at 12:28 AM, <[email protected]> wrote:
> > From: Gyungoh Yoo <[email protected]>
> >
> > Signed-off-by: Gyungoh Yoo <[email protected]>
> > Acked-by: Bryan Wu <[email protected]>
> > ---
> > Changes v10:
> > Nothing
> >
> > Changes v9:
> > Nothing
> >
> > Changes v8:
> > Renamed property names for backlight with vendor prefix
> > Modified gpio-enable property to generic property for GPIO
> > Made up the example for backlight DT
> >
> > Changes v7:
> > Nothing
> >
> > Changes v6:
> > Nothing
> >
> > Changes v5:
> > Nothing
> >
> > Changes v4:
> > Nothing
> >
> > Changes v3:
> > Nothing
> >
> > Changes v2:
> > Added reg attribute for I2C slave address
>
> You did? Where is it?

It was just changes on version 2.
Since that version, the patch series was separted.

>
> > .../video/backlight/sky81452-backlight.txt | 29 ++++++++++++++++++++++
> > 1 file changed, 29 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..8daebf5
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/video/backlight/sky81452-backlight.txt
> > @@ -0,0 +1,29 @@
> > +SKY81452-backlight bindings
> > +
> > +Required properties:
> > +- compatible : Must be "skyworks,sky81452-backlight"
> > +
> > +Optional properties:
> > +- name : Name of backlight device. Default is 'lcd-backlight'.
> > +- gpios : GPIO to use to EN pin.
> > + See Documentation/devicetree/bindings/gpio/gpio.txt
> > +- skyworks,en-channels : Enable mask for current sink channel 1 to 6.
>
> Does led-sources property being added in 3.20 work for this?

I think so. I will modify it.

>
> > +- skyworks,ignore-pwm : Ignore both PWM input
> > +- skyworks,dpwm-mode : Enable DPWM dimming mode, otherwise Analog dimming.
> > +- skyworks,phase-shift : Enable phase shift mode
> > +- skyworks,ovp-level : Over-voltage protection level.
> > + Should be between 14 or 28V.
>
> Please append units (-volt)

I will append it and resubmit the patch.

Thanks.

>
> > +- skyworks,short-detection-threshold : It should be one of 4, 5, 6 and 7V.
>
> Please append units (-volt)
>
> > +- skyworks,current-limit : It should be 2300mA or 2750mA.
>
> Please append units (-mA)
>
> > +
> > +Example:
> > +
> > + backlight {
> > + compatible = "skyworks,sky81452-backlight";
> > + name = "pwm-backlight";
> > + skyworks,en-channels = <0x3f>;
> > + skyworks,ignore-pwm;
> > + skyworks,phase-shift;
> > + skyworks,ovp-level = <20>;
> > + skyworks,current-limit = <2300>;
> > + };
> > --
> > 1.9.1
> >