Spread spectrum AMD RX 470

[Harry Wentland]

On 2017-06-27 04:17 AM, Christian König wrote:
> Hi Peter,
> 
> Am 27.06.2017 um 09:07 schrieb Peter Blum:
>> Hello,
>>
>> does any one know how to disable spread spectrum on the DP outputs
>> of a AMD RX 47>> I tried to call the funktion amdgpu_atombios_crtc_program_ss(), but
>> this seems to do not work any more.
>> Are there any other solutions?
>>

BIOS will enable spread spectrum by default on DP PHYs. There's no way
for us to disable it.

Harry

> adding the appropriate mailing list and Harry from our display team.
> 
> Price question is why do you want to disable spread spectrum in the
> first place?
> 
> IIRC it is mandatory for sinks and optional for sources, so there
> shouldn't be a reason to disable it.
> 
> Regards,
> Christian.