[Bug 92936] Tonga powerplay isssues

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92936

            Bug ID: 92936
           Summary: Tonga powerplay isssues
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: adf.lists at gmail.com

Created attachment 119627
  --> https://bugs.freedesktop.org/attachment.cgi?id=119627&action=edit
dmesg

Testing the amdgpu-powerplay brandh I have several issues.

The first and possibly the cause of others (so for now I won't do separate
bugs) is on boot I see -

Can't find requested voltage id in vdd_dep_on_sclk table!

Testing Games/demos all is good and perf is as expected.

Testing UVD however and perf is way worse than before powerplay.

I see in dmesg -

[ 1818.011402] Failed to send Message.
[ 1818.011407] Failed to send Previous Message.

After doing this I also may no longer get good perf from gamed/demos.

Trying to force high for the uvd test doesn't help and I notice another issue -

/sys/class/drm/card0/device/power_dpm_force_performance_level

is auto to start with, if I echo high > it works = GPU gets hotter, but I can't
change it back. If I echo auto > ... then cat it, it will still say high and
GPU remains hot.

Separately when I quit X I may get some new errors in dmesg

Nov 12 11:36:50 ph4 kernel: Failed to send Previous Message.
Nov 12 11:36:50 ph4 kernel: last message repeated 2 times
Nov 12 11:36:50 ph4 kernel: unforce pcie level failed!

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