[Bug 99476] Forcing perf level to high doesn't change memory clock

* [Bug 99476] Forcing perf level to high doesn't change memory clock
@ 2017-01-20 15:10 bugzilla-daemon
  2017-02-09 13:46 ` bugzilla-daemon
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: bugzilla-daemon @ 2017-01-20 15:10 UTC (permalink / raw)
  To: dri-devel

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https://bugs.freedesktop.org/show_bug.cgi?id=99476

            Bug ID: 99476
           Summary: Forcing perf level to high doesn't change memory clock
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: samuel.pitoiset@gmail.com

Hi,

After changing the current performance level with:

echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level

only the shader clock is updated but not the memory clock.

# cat /sys/kernel/debug/dri/0/amdgpu_pm_info

 [  mclk  ]: 300 MHz

 [  sclk  ]: 1306 MHz

# cat /sys/class/drm/card0/device/pp_dpm_sclk 
0: 300Mhz 
1: 608Mhz 
2: 910Mhz 
3: 1077Mhz 
4: 1145Mhz 
5: 1191Mhz 
6: 1236Mhz 
7: 1306Mhz *

# cat /sys/class/drm/card0/device/pp_dpm_mclk 
0: 300Mhz *
1: 1750Mhz 

Same issue if I choose the manual mode and try to echo 1 in pp_dpm_mclk.

Tested on Linux 4.8 with RX480.

Thanks!

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