[PATCH] drm/amdgpu: expose amdgpu_sensors on pre-powerplay chips

Michel Dänzer michel at daenzer.net
Wed Feb 15 02:51:59 UTC 2017

On 15/02/17 01:17 AM, Deucher, Alexander wrote:
>> From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf
>> Of Samuel Pitoiset
>>> Otherwise, it seems to work though the GPU_TEMP reads as "5000" on my
>>> Kaveri (meaning temp of 5C which isn't true).
>>> I suspect the dpm code is reading the wrong register to get the temp but
>>> we can fix that in another change later on.
>> No idea. It was just a copy-n-paste. Maybe the initial code is buggy?
> I don’t know that the GPU temp sensor on CI based APUs actually works
> properly.  I think the package temperature is exposed via the CPU
> thermals.

Seems to work fine with radeon on my two Kaveri laptops, FWIW.

On my desktop Kaveri, unplausibly low values (around 9-10C) are reported
at idle for both GPU and CPU. With load, both go up to around 30C, so it
seems like the values make sense in a relative sense but not in an
absolute one.

Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer

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