[Intel-gfx] [PATCH 1/3] drm/edid: Fix up clock for CEA/HDMI modes specified via detailed timings

[Jani Nikula]

On Thu, 08 Oct 2015, Daniel Vetter <daniel at ffwll.ch> wrote:
> On Thu, Oct 08, 2015 at 12:22:31PM -0400, Adam Jackson wrote:
>> On Thu, 2015-10-08 at 11:43 +0300, ville.syrjala at linux.intel.com wrote:
>> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>> > 
>> > EDID detailed timings have a resolution of 10kHz for the pixel clock, so
>> > they can't represent certain CEA/HDMI modes accurately. If we see a mode
>> > coming in via detailed timings which otherwise matches one of the
>> > CEA/HDMI modes except the clock is just a bit off, let's assume that the
>> > intention was for that mode to be one of the CEA/HDMI modes and go ahead
>> > and fix up the clock to match the CEA/HDMI spec exactly (well, as close
>> > as we can get with the 1 kHz resolution we use).
>> > 
>> > This should help code that's looking for an exact clock match (eg. i915
>> > audio N/CTS setup).
>> 
>> Looks like a sane set of changes.  Series is:
>> 
>> Reviewed-by: Adam Jackson <ajax at redhat.com>
>
> Merged the first two patches to drm-misc (the later one has conflicts with
> the lack of drm-intel-next, so can pull it in only after a rebase).

This is needed in v4.3.

BR,
Jani.

>
> Thanks, Daniel
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
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-- 
Jani Nikula, Intel Open Source Technology Center