[Bug 78111] APU turbo core boost not working when radeon.dpm=1

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=78111

--- Comment #11 from Alex <mad_sam at bk.ru> ---
(In reply to Alex from comment #10)
> AMD A8-5557M (Richland). APU turbo core boost still is not working.
> 
> With radeon.dpm=1
> 
>   boost state support:
>     Supported: yes
>     Active: no
>     Boost States: 3
>     Total States: 8
>     Pstate-Pb0: 3100MHz (boost state)
>     Pstate-Pb1: 2800MHz (boost state)
>     Pstate-Pb2: 2400MHz (boost state)
>     Pstate-P0:  2100MHz
>     Pstate-P1:  1900MHz
>     Pstate-P2:  1700MHz
>     Pstate-P3:  1400MHz
>     Pstate-P4:  900MHz
> 
> 
>     |Mperf               || Idle_Stats
> CPU | C0   | Cx   | Freq || POLL | C1   | C2
>    0| 20,65| 79,35|  2082||  0,00| 16,43| 66,12
>    1| 42,31| 57,69|  2091||  0,00|  1,22| 57,65
>    2| 72,17| 27,83|  2093||  0,00|  1,44| 26,81
>    3| 16,95| 83,05|  2090||  0,00|  3,68| 82,30
> 
> 
> With radeon.dpm=0
> 
>   boost state support:
>     Supported: yes
>     Active: yes
> 
> 
>    |Mperf               || Idle_Stats
> CPU | C0   | Cx   | Freq || POLL | C1   | C2
>    0| 51,88| 48,12|  2731||  0,00|  6,83| 42,66
>    1| 38,85| 61,15|  2742||  0,00|  0,40| 61,93
>    2| 42,05| 57,95|  2821||  0,00| 32,44| 27,37
>    3| 73,37| 26,63|  2825||  0,00| 11,34| 15,95

Tested on kernel 4.4

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