Re: problems getting AMD C-70 APU working with powerd/cpufreq

On Tue, Oct 17, 2017 at 06:23:06PM -0400, Anthony Jenkins wrote:
>cpufreq(4) does not support AMD processor family 0x14 (20), which I
>believe your dmesg showed your processor to be.

aha!

>I had added support for controlling the frequency on some later AMD
>families last year, but the AMD documentation for the 0x14 family is
>pretty complicated for my tiny brain.  The other families control
>processor frequency with a single register, but AFACT you use P-states
>on family 0x14.  You can have up to 8 P-states, each of which specifies
>a power/frequency configuration.  If someone could point me to a
>reference for controlling the frequency for this family, I could submit
>something for review...no idea what Linux does for this family.

Would it help if I were to get hardware output from booting temporarily
to linux mint?

many thanks,
-- 
J.
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