Re: powernow-k8 and non-standard multipliers

From: Philip Langdale
Date: Thu Nov 15 2007 - 02:54:54 EST


Langsdorf, Mark wrote:
>
> The standard PowerNow! driver, by design, will stop
> working in this situation. I'm not going to support
> a driver that allows non-standard multipliers because
> it could cause a lot of hard to debug maintenance
> issues.

Just a follow-up to get this into the public record. I
discussed this with Mark privately and then did more
digging and established that in my particular case, the
problem was that the BIOS was hiding the p-state table
when a non-standard multiplier was used. So, I built
a custom DSDT that included the p-state table along
with an extra entry for my higher speed and now I've
happily got powernow support again.

--phil
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