http://bugzilla.kernel.org/show_bug.cgi?id=11541





------- Comment #71 from andreas.herrma...@amd.com  2009-03-03 03:49 -------
WRT comment #68:

> powernow-k8 works, but I think it doesn't support all of the hardware scaling
>features: e.g. minimum frequency in Linux is 600MHz while in Windows it is
>550MHz
>Here is dmesg output for powernow-k8 module insertion
>[   19.919622] powernow-k8:    0 : pstate 0 (2200 MHz)
>[   19.919700] powernow-k8:    1 : pstate 1 (1100 MHz)
>[   19.919737] powernow-k8:    2 : pstate 2 (600 MHz)

Oops, this is most probably a bug in the powernow-k8 driver.

Here is what I get on a Turion Ultra using x86info

Pstate-0: fid=e, did=0, vid=24 (2200MHz) (current)
Pstate-1: fid=e, did=1, vid=30 (1100MHz)
Pstate-2: fid=e, did=2, vid=3c (550MHz)

On the same system powernow-k8 reports:
powernow-k8:    0 : pstate 0 (2200 MHz)
powernow-k8:    1 : pstate 1 (1100 MHz)
powernow-k8:    2 : pstate 2 (600 MHz)

I'll look at that.


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