mclk stuck at low state

[Alex Deucher]

On Wed, Jan 13, 2021 at 8:51 AM Tom Psyborg <pozega.tomislav at gmail.com> wrote:
>
> Hi
>
> I see the message didn't make it to the mailing list? Any reason for that?

No idea.  I never saw it until now.

>
> On 10/01/2021, Tom Psyborg <pozega.tomislav at gmail.com> wrote:
> > Hi
> >
> > Have an ubuntu 16.04 system here with kernel version 5.6.14, running
> > on a laptop with FX9830P APU.
> > During graphic load I notice the memory clock is always at the low
> > state - 667MHz, never switching to 1200MHz. These two states are the
> > only ones listed in pp_dpm_mclk output.
> > I checked system memory with dmidecode, it is reported as 2400MHz.
> > Same bug is still present with live booted ubuntu 20.10
> >
> > Does this introduce any regression in performance, or is just a
> > cosmetic bug and actual mclk is the same as system memory clock?

Can you provide your dmesg output?  On the APU the mclk is the system
memory clock because the APU uses system memory.

Alex