MCLK defaults high on second card

[Tom St Denis]

On 02/02/18 12:16 AM, Zhu, Rex wrote:
> Hi Tom,
> 
> The attached patch should be able to fix this issue.
> 
> Best Regards
> Rex

Hi Rex,

Yup, works fine with the patch.

Cheers,
Tom

> 
> 
> 
> -----Original Message-----
> From: StDenis, Tom
> Sent: Friday, February 02, 2018 2:58 AM
> To: Deucher, Alexander; amd-gfx mailing list
> Cc: Zhu, Rex; Lazare, Jordan; Wentland, Harry
> Subject: Re: MCLK defaults high on second card
> 
> On 01/02/18 01:54 PM, Deucher, Alexander wrote:
>> Does it also work properly with dc disabled?  I suspect a bug
>> somewhere in the display info that dc generated when no displays are attached.
>> See smu7_program_display_gap().
> 
> Yup, with dc=0 the clock is correctly set.
> 
> I'll take a peak (tomorrow) but I suspect it'll probably be more fruitful to hand it over to the display team.
> 
> Thanks,
> Tom
> 
>>
>>
>> Alex
>>
>> ----------------------------------------------------------------------
>> --
>> *From:* StDenis, Tom
>> *Sent:* Thursday, February 1, 2018 1:43 PM
>> *To:* Deucher, Alexander; amd-gfx mailing list
>> *Cc:* Zhu, Rex
>> *Subject:* Re: MCLK defaults high on second card On 01/02/18 01:36 PM,
>> Deucher, Alexander wrote:
>>> Are there any displays attached to the secondary card with the mclks
>>> stuck high?  If not, does attaching a display help?
>>
>> Stealing the display from my primary (CZ in this case) does help, and
>> then putting it back the MCLK remains low.
>>
>> Tom
>>
>>>
>>>
>>> Alex
>>>
>>> ---------------------------------------------------------------------
>>> ---
>>> *From:* amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of
>>> Tom St Denis <tom.stdenis at amd.com>
>>> *Sent:* Thursday, February 1, 2018 1:14:43 PM
>>> *To:* amd-gfx mailing list
>>> *Cc:* Zhu, Rex
>>> *Subject:* MCLK defaults high on second card Hi,
>>>
>>> I have a setup with a CZ + Polaris10 and on the Polaris10 the SCLK
>>> idles low and the MCLK stays in the 2nd state (1750MHz) but on my
>>> Workstation which has a single 560 in it the card idles at 300MHz
>>> (with the stock
>>> FC27 kernel).
>>>
>>> Is there an issue with non-primary cards idling properly?
>>>
>>> Doing
>>>
>>> echo 0 >
>>> /sys/devices/pci0000:00/0000:00:03.1/0000:21:00.0/pp_dpm_mclk
>>>
>>> Doesn't result in low clock rates either.
>>>
>>> Tom
>>> _______________________________________________
>>> amd-gfx mailing list
>>> amd-gfx at lists.freedesktop.org
>>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>>
>