[Bug 107375] Raven: `amdgpu_device_ip_resume_phase2()` takes 750 ms

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107375

--- Comment #2 from Paul Menzel <pmenzel+bugs.freedesktop at molgen.mpg.de> ---
(In reply to Michel Dänzer from comment #1)
> Created attachment 140814 [details] [review]
> Do posting read in psp_v10_0_cmd_submit
> 
> Does this patch help by any chance?

No, unfortunately it does not change the times.

> (In reply to Paul Menzel from comment #0)
> > Also, I wonder why the sleep in the trace is 3 ms instead of 1 ms like in
> > the code.
> 
> Maybe your kernel is configured with CONFIG_HZ=300? Anyway, it doesn't
> really matter, as it's waiting for the PSP to finish processing the command.

```
$ grep CONFIG_HZ .config
# CONFIG_HZ_PERIODIC is not set
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
```

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