Re: [PATCH 00/26] OMAPDSS: DT support (Christmas edition)

[Tomi Valkeinen <tomi.valkeinen@ti.com>]

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On 2013-12-04 18:01, Sebastian Reichel wrote:
> Hi,
> 
> On Wed, Dec 04, 2013 at 02:28:27PM +0200, Tomi Valkeinen wrote:
>> Here's a new version for DT support to OMAP Display Subsystem. See
>> http://article.gmane.org/gmane.linux.ports.arm.omap/102689 for the intro of the
>> previous version, which contains thoughts about the related problems.
>>
>> The major change in this version is the use of V4L2 and CDF style port/endpoint
>> style in the DT data. However, note that even if the DT data contains proper
>> port & endpoint data, the drivers only use the first endpoint. This is to
>> simplify the patches, as adding full support for the ports and endpoints to the
>> drivers will be a big task. This approach still works with more or less all the
>> boards, as the only cases where the simpler model is an issue are the boards
>> with multiple display devices connected to a single output.
>>
>> Laurent, I'd appreciate if you could have a look at the .dts changes, to see if
>> there's anything that's clearly not CDF compatible.
>>
>> The patches can also be found from:
>> git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux.git work/dss-dt
> 
> Will this be ready for 3.14? Depending on that I would handle

That is my hope. We have been missing DSS DT bindings for too long, and
maintaining and adding new mixed DT/non-DT panels, as done for omap4
now, is just a big headache.

The bindings in my series are probably not perfect, but I believe they
should be fine enough. I didn't get any NACKs for the previous versions
of this series, and the only reason I haven't been pushing these to
mainline is that I haven't been satisfied with the bindings.

Laurent promised to have a look at the bindings to see if he notices
anything that would conflict with Common Display Framework bindings. If
he's ok with the bindings, I think we can decide next week if these will
be merged for 3.14.

> omapdss support for the N900 differently. If this code gets merged
> into 3.14 I will update the N900 patches [0] accordingly. Otherwise
> I would suggest to take the N900 patches as is for 3.14 and I will
> take care of adding the omapdss DT support to the panel (and the
> N900.dts) separately.

I really would not like to add any more hacks for DSS.

 Tomi



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