regression on Carrizo display bringup

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On 14/11/17 09:36 AM, Harry Wentland wrote:
> On 2017-11-14 08:30 AM, Tom St Denis wrote:
>> Hi all,
>>
>> Found when testing the tip of drm-next on my A12-9800 Carrizo.
>>
>> [root at carrizo linux]# git bisect good
>> 138a3358c17918bb5cd5aa1ea9e8760ac69c515d is the first bad commit
>> commit 138a3358c17918bb5cd5aa1ea9e8760ac69c515d
>> Author: Yongqiang Sun <yongqiang.sun at amd.com>
>> Date:   Tue Nov 7 11:01:34 2017 -0500
>>
>>      drm/amd/display: Optimize programming front end
>>
>>      In case of update type is medium, optimize squence,
>>      reduce programing time.
>>
>>      Change-Id: Ib1793408897b0c4d4a64434c239c3703d43e83d9
>>      Signed-off-by: Yongqiang Sun <yongqiang.sun at amd.com>
>>      Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
>>      Acked-by: Harry Wentland <harry.wentland at amd.com>
>>
>> :040000 040000 8d62da91eddb89e8152b46cce5c1c8aa8edb80bf c377c5887076041e5a61640e78be756af48001ff M      drivers
>>
>>
>> When I load amdgpu I get a screen that is mostly white with red bars and then some noise.  Nothing shows up in my dmesg log that is specific to this error.
>>
>> When I load X it seems like it's working though.  I do get noise when I resize mpv from full to windowed (and back) but it goes away.
>>
> 
> We've had a ton of fallout from this change. Can you open a Jira ticket and queue it to us?

Sure will do.

Cheers,
Tom


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