[PATCH/RFC 05/15] dt-bindings: display: bridge: thc63lvd1024: Document dual-link operation

[Laurent Pinchart]

Hi Jacopo,

On Fri, Mar 08, 2019 at 05:49:25PM +0100, Jacopo Mondi wrote:
> On Thu, Mar 07, 2019 at 01:23:35AM +0200, Laurent Pinchart wrote:
> > The THC63LVD1024 LVDS decoder can operate in two modes, single-link or
> > dual-link. In dual-link mode both input ports are used to carry even-
> > and odd-numbered pixels separately. Document this in the DT bindings,
> > along with the related rules governing port and usage.
> >
> > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
> > ---
> >  .../bindings/display/bridge/thine,thc63lvd1024.txt         | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt b/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt
> > index 37f0c04d5a28..4ff6eb9bbc19 100644
> > --- a/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt
> > +++ b/Documentation/devicetree/bindings/display/bridge/thine,thc63lvd1024.txt
> > @@ -28,6 +28,13 @@ Optional video port nodes:
> >  - port at 1: Second LVDS input port
> >  - port at 3: Second digital CMOS/TTL parallel output
> >
> > +The device can operate in single-link mode or dual-link mode. In single-link
> > +mode, all pixels are received on port at 0, and port at 1 shall not contain any
> > +endpoint. In dual-link mode, even-numbered pixels are received on port at 0 and
> > +odd-numbered pixels on port at 1, and both port at 0 and port at 1 shall contain
> > +endpoints.
> 
> You know, I'm not sure this is helpful, as if we have to go and
> describe what the chip supports, a paragraph for dual ouput mode would
> be required as well. The bindings already document that the chip
> supports single/dual input/output modes, maybe you can just add rules
> that prescribes how to populate the endpoints, for both input and
> output modes?

That's what I was trying to do :-) How else would you like to see it
described ?

> > +
> > +
> 
> You can drop this empty line.
> 
> >  Example:
> >  --------
> >

-- 
Regards,

Laurent Pinchart