[Bug 201539] AMDGPU R9 390 automatic fan speed control in Linux 4.19/4.20/5.0

[bugzilla-daemon at kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201539

codebugs (codebugs at yandex.ru) changed:

           What    |Removed                     |Added
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                 CC|                            |codebugs at yandex.ru

--- Comment #76 from codebugs (codebugs at yandex.ru) ---
The later 390 series cards (Grenada Pro) were also affected by an inability to
set the correct fan speeds in 5.4.0. Because the cards would not run their fans
greater than 20% of their max RPMs under load, it did destroy at least one 390
when it ran without proper cooling at 105 C for an extended period of time.

This patch saved the other R390 card in the other machine. Thank you.

As of 5.11, it still reports temp1_crit and temp1_crit_hyst as 04000000 and
-273.15.

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