AMDGPU For Linux 5.1 Tweaks The Golden Settings For Vega, Corrects Fiji Power Reading
Written by Michael Larabel in Radeon on 14 March 2019 at 06:41 AM EDT. 21 Comments
RADEON --
Since last week the big set of DRM driver changes has been part of the mainline kernel for Linux 5.1 while working its way to mainline now are a couple of early fixes to the AMDGPU driver.

There are just three fixes at this stage for AMDGPU in Linux 5.1 though all notable in their own regards if you are an owner of an affected GPU. The changes include:

- Corrected GPU power reading for Fiji hardware. The sampling rate had to be bumped up to 500ms from 1ms and it also turns out they were reading the wrong register for reading the power value for the aging Radeon R9 Fury series.

- There is another golden register update for Vega hardware. This is just a one-liner GC addition but no word in the commit if this update to the "golden" settings for putting the hardware in its most ideal state will have any real impact for end-users.

- There also now is a workaround for overriding the fan target temperature in the SMC table for Vega 20 (Vega 7nm) hardware. The override fan temperature target is 105 Celsius.

These changes are now in the DRM area and will be sent to the mainline Linux kernel as part of the next Direct Rendering Manager pull request.

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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