[Bug 106306] amdgpu CIK power management issues (overdrive and wattman)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106306

--- Comment #5 from Alex Deucher <alexdeucher at gmail.com> ---
You need to make sure the PP_OVERDRIVE_MASK flag (bit 14) is set.  E.g.,
amdgpu.ppfeaturemask=0xfffd7fff
See the documentation in the driver for more:
https://cgit.freedesktop.org/~agd5f/linux/tree/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c?h=amd-staging-drm-next#n469
Also, If the vbios on the particular board does not support overclocking, the
functionality is not exposed on 4.17 IIRC.

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