Power-saving/performance toggles for amdgpu

[Alex Deucher]

On Fri, Aug 6, 2021 at 12:20 PM Bastien Nocera <hadess at hadess.net> wrote:
>
> On Fri, 2021-08-06 at 11:45 -0400, Alex Deucher wrote:
> > You could set one of the profiles which sets more or less aggressive
> > clocking, but you still get the advantages of the SMU being able to
> > dynamically adjust the clocks.  If you manually force the clock to low
> > or high, you end up forcing all clocks, even if a particular engine is
> > not in use.  E.g., if you are not using video decode, there is no need
> > to force the decoder clocks high as well.  Also, if the userspace tool
> > dies for some reason, that will leave the clocks in the forced state.
>
> This looks like the best option for that use case. I've documented it
> here:
> https://gitlab.freedesktop.org/hadess/power-profiles-daemon/-/issues/3#note_1021578
>
> Thanks very much for your help!

No problem.

Alex