drm/bridge: Synopsys DW-HDMI bridge driver for the Ingenic JZ4780 (was Re: Specialising the Synopsys DW-HDMI bridge driver for the Ingenic JZ4780)

[H. Nikolaus Schaller]

Hi Ezequiel,

> Am 24.08.2020 um 15:46 schrieb Ezequiel Garcia <ezequiel at vanguardiasur.com.ar>:
> 
> On Fri, 21 Aug 2020 at 19:24, Paul Cercueil <paul at crapouillou.net> wrote:
>> 
>> 
>> 
>> Le sam. 22 août 2020 à 0:11, Paul Boddie <paul at boddie.org.uk> a
>> écrit :
>> 
>> If you send clean patches, there's no reason for me not to merge them.
>> 
> 
> I'd really like to see HDMI support on my CI20 being merged. Thank to
> recent ingenic-drm work and thanks for Paul Boddie and Nikolaus work,
> the patches are IMO quite clean.

I have done some testing and it appears that it only works if DRM is
compiled into the kernel. At least in my setup. If DRM and/or HDMI are made
modules there is no video or code doesn't compile completely.

We have to analyse that further.

And it seems to differ significantly from what Paul has developed recently
to make it work. It seems to be quite lucky that we have a working setup now :)

> Nikolaus, Paul: Do you have plans to submit these?

Yes, as soon as we are sure that it works (and when it doesn't).

But thanks to your work it is now much easier to improve things, since we
are no longer looking for a break-through but just have to avoid regressions.

> If not, I'll be happy to get them out the door for review.

Let it mature a little first and have it tested on more setups and rebased
to mainline v5.9-rc2 :)

BR and thanks,
Nikolaus