AMDGPU Gets More Power-Related Fixes In Linux 4.11

It feels like the work on power management / clock-gating / PowerPlay is a never-ending mission within the AMDGPU DRM driver -- more work has been queued up for the next kernel cycle.

Last week was the main AMDGPU features for Linux 4.11 being submitted to DRM-Next. In that article you can find out about the various new features that will premiere in the DRM driver with Linux 4.11. There was power management work as part of that earlier pull while coming today were some fixes of material to land for Linux 4.11.

Alex Deucher sent in additional fixes today for drm-next-4.11 and it's primarily about power changes. There are more PowerPlay fixes and VCE/UVD power-gating fixes.

There is also a clean-up to the AMDGPU Southern Islands graphics code to better match the Sea Islands and Volcanic Islands code. The SI/CI support remains an experimental feature of the AMDGPU DRM driver and isn't yet enabled by default, deferring instead to the mature Radeon DRM driver, unless otherwise set at the kernel's build time.

There are also various other fixes as outlined via this pull request.