[PATCH] drm/edid: Reduce horizontal timings for pixel replicated modes

Clint Taylor clinton.a.taylor at intel.com
Mon Aug 25 08:57:50 PDT 2014

On 08/25/2014 06:02 AM, Daniel Vetter wrote:
> On Mon, Aug 18, 2014 at 02:02:14PM -0700, clinton.a.taylor at intel.com wrote:
>> From: Clint Taylor <clinton.a.taylor at intel.com>
>> Pixel replicated modes should be 720 horizontal pixel and pixel
>> replicated by the HW across the HDMI cable at 2X pixel clock. Current
>> horizontal resolution of 1440 does not allow pixel duplication to
>> occur and scaling artifacts occur on the TV. HDMI certification
>> 7-26 currently fails for all pixel replicated modes. This change fizes
>> the HDMI certification issues with 480i/576i.
>> V2: Removed interlace flag from VICs 44 and 45. Will be submitted in
>> another patch. Various other formatting fixes.
>> Signed-off-by: Clint Taylor <clinton.a.taylor at intel.com>
>> ---
>>   drivers/gpu/drm/drm_edid.c        |   96 ++++++++++++++++++-------------------
>>   drivers/gpu/drm/i915/intel_hdmi.c |   10 +++-
> I think the i915 side of this double-clock support should be split out
> into a separate patch. Makes it easier for people to spot that there's
> some driver work to enable this properly.
> -Daniel

Two patches will work. The HDMI driver will just reject the SD 
interlaced modes without the i915 changes.


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