[PATCHv2 4/8] Doc/DT: Add DT binding documentation for HDMI Connector

[Philipp Zabel]

Am Mittwoch, den 19.03.2014, 10:11 +0200 schrieb Tomi Valkeinen:
> On 19/03/14 10:03, Philipp Zabel wrote:
> 
> >>> Geert's comment also applies to all other connector types. These can be
> >>> input connectors, too.
> >>
> >> We might not need to define all the properties required by input connectors 
> >> now, but we need to make sure that future extensions will be backward-
> >> compatible. I don't see a problem in making the connector DT bindings depend 
> >> on the direction as long as the direction is specified in the DT node, either 
> >> explicitly or implicitly.
> >>
> >> An obvious solution would be to have separate "hdmi-input-connector" and 
> >> "hdmi-output-connector" compatible strings but I don't like that, as there's 
> >> no difference in the HDMI connector itself, only in the usage.
> > 
> > I don't think this is necessary, either. I just meant the wording for
> > the video port should leave the direction unspecified. I imagine
> > somebody somewhere will connect a HDMI connector to a mux so that it can
> > be either input or output.
> 
> I don't disagree, but I think it's better to change the wording when
> someone has a working setup and can try it. These bindings have been
> designed only with video output in mind, and I'd rather have them
> constrained to that purpose for now.
> 
> One reason for keeping them output only is that when someone wants to
> use these for capture, he needs to change the binding docs, and it'll
> gather more attention than just using the bindings in a board's dts.
> 
> That said, we should take care to make the bindings so that nothing
> prevents their use for capture (which I think they allow in their
> current form).

I don't disagree, either. I have no objection against the bindings
themselves.

Acked-by: Philipp Zabel <p.zabel at pengutronix.de>

regards
Philipp