From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clint Taylor <clinton.a.taylor@intel.com>
Subject: Re: [PATCH] drm/edid: Reduce horizontal timings for pixel replicated
 modes
Date: Mon, 25 Aug 2014 08:57:50 -0700
Message-ID: <53FB5CFE.7070809@intel.com>
References: <1408395734-21955-1-git-send-email-clinton.a.taylor@intel.com>
 <20140825130258.GF15520@phenom.ffwll.local>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Content-Transfer-Encoding: 7bit
Return-path: <dri-devel-bounces@lists.freedesktop.org>
Received: from mga03.intel.com (mga03.intel.com [143.182.124.21])
 by gabe.freedesktop.org (Postfix) with ESMTP id CD33B89FC9
 for <dri-devel@lists.freedesktop.org>; Mon, 25 Aug 2014 08:59:09 -0700 (PDT)
In-Reply-To: <20140825130258.GF15520@phenom.ffwll.local>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
List-Id: dri-devel@lists.freedesktop.org

On 08/25/2014 06:02 AM, Daniel Vetter wrote:
> On Mon, Aug 18, 2014 at 02:02:14PM -0700, clinton.a.taylor@intel.com wrote:
>> From: Clint Taylor <clinton.a.taylor@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@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.

Clint