[Bug 110777] Kernel 5.1-5.2 MCLK stuck at 167MHz Vega 10 (56)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110777

            Bug ID: 110777
           Summary: Kernel 5.1-5.2 MCLK stuck at 167MHz Vega 10 (56)
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: antonh at gmx.de

Hi,

Since Kernel 5.1 up-to Kernel 5.2 my Vega 56 card's memory clock is stuck at
167MHz and does not boost up any more.
The exact same setup boosts fine to 1000MHz memclk when running Kernel 5.0.13.

Is there any info I can provide to get this fixed?

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