[PATCH v2 1/3] dt-bindings: display: bridge: lvds-codec: Document vcc-supply property

Biju Das biju.das.jz at bp.renesas.com
Wed Aug 26 06:58:50 UTC 2020


Hi Rob,

Thanks for the feedback.

> Subject: Re: [PATCH v2 1/3] dt-bindings: display: bridge: lvds-codec:
> Document vcc-supply property
>
> On Mon, Aug 10, 2020 at 04:22:17PM +0100, Biju Das wrote:
> > Document optional vcc-supply property that may be used as VCC source.
> >
> > Signed-off-by: Biju Das <biju.das.jz at bp.renesas.com>
> > ---
> > New patch Ref: Ref:https://patchwork.kernel.org/patch/11705819/
> > ---
> >  .../devicetree/bindings/display/bridge/lvds-codec.yaml         | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml
> > b/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml
> > index 68951d56ebba..3248be31eceb 100644
> > --- a/Documentation/devicetree/bindings/display/bridge/lvds-codec.yaml
> > +++ b/Documentation/devicetree/bindings/display/bridge/lvds-
> codec.yaml
> > @@ -79,6 +79,9 @@ properties:
> >        The GPIO used to control the power down line of this device.
> >      maxItems: 1
> >
> > +  vcc-supply:
> > +    maxItems: 1
>
> Probably should be 'power-supply' to align with the 'simple' panels.
> That's also to signify there's only 1 supply. Using 'vcc' would encourage
> adding 'vdd-supply', 'vddio-supply', etc. A second supply I'll NAK because at
> that point it's not a simple bridge with no configuration (it's arguably already
> there).

Yes, I am ok with 'power-supply', since LVDS CODEC driver is  generic and also to align with terminology used in generic 'simple' panels.

In our case this Receiver converts LVDS signals to RGB signals and fed this signal to simple panel.
On the receiver part, We need to supply  power to TTL output,  PLL and LVDS input. It all derived from the single power source.

Laurent, Please share you opinion on this.

Cheers,
Biju




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