[PATCH 1/4] ARM: dts: am437x-gp-evm: add HDMI support
Tony Lindgren
tony at atomide.com
Fri Dec 13 14:57:32 UTC 2019
* Tomi Valkeinen <tomi.valkeinen at ti.com> [191213 12:34]:
> On 13/12/2019 14:28, Laurent Pinchart wrote:
>
> > > So... In the DT file, we would have multiple endpoints in the same output port in DSS, one going to
> > > the panel, one to the SiI9022? omapdrm could then create two encoders, one abstracting the DPI
> > > output and the connection to the panel, one abstracting the DPI output and SiI9022?
> >
> > That's the idea, yes.
> >
> > > And then someone would need to handle the GPIO, and set it based on the output used. These kind of
> > > gpios are always difficult, as they don't belong anywhere =).
> >
> > https://lore.kernel.org/lkml/20191211061911.238393-5-hsinyi@chromium.org/
> >
> > Still, the infrastructure in omapdrm would need quite a bit of work.
> > We're just about to get a helper layer for linear pipelines merged, and
> > we already need to go one step further :-)
>
> Alright, sounds like this will be doable in the future. So let's drop this
> and the epos HDMI patches for now.
Oh OK. Sounds like no other solution is usable right now short of
separate dts files like you've done.
> This does sound like quite a bit of work, as you say, so I have no idea when
> we can get there (on the omapdrm side). In the minimum we should first get
> the big omapdrm rework done, in order to avoid nasty conflicts.
>
> Thanks for educating me =).
Sounds a nice plan though :)
Thanks,
Tony
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