Re: [PATCH] drm_edid: support CEA video modes

[Andy Furniss <andyqos@ukfsn.org>]

Daniel Vetter wrote:
> On Fri, May 18, 2012 at 12:37:51PM +0100, Andy Furniss wrote:
>> Joakim Plate wrote:
>>> Joakim Plate<elupus<at>   ecce.se>   writes:
>>>
>>>>
>>>> Christian Schmidt<schmidt<at>   digadd.de>   writes:
>>>>
>>>>>
>>>>> TFT/plasma televisions and projectors have become commonplace, and so
>>>>> has the use of PCs to drive them. Add the video modes specified by an
>>>>> EDID's CEA extension to the mode database for a connector.
>>>>
>>>> /Joakim
>>>>
>>>
>>> Shameless bump on the subject. Would be nice if we could
>>> get this list complete when connecting to HDTV's.
>>
>> Yea, it would be nice.
>>
>> UK bluray seems to use 24/1.001 - not that it's that bad watching
>> with TV@24Hz.
>>
>> I do have issues with interlaced modes on my TV. I don't know how
>> DRM handles interlaced, but CEA says that the number of vblank lines
>> alternates per field. If that isn't happening then I guess that's
>> why.
>
> If this is on an intel gpu, you need kernel 3.4 to make interlaced work.
> If that doesn't help, please file a bug on bugs.freedesktop.org.
> -Daniel

Thanks, but it's AMD I do have a bug open for it.
https://bugs.freedesktop.org/show_bug.cgi?id=35970

Which reminds me - another issue with CEA modes is that the ones that 
should be double clocked are not.