linux-kernel - Re: powernow-k8 and non-standard multipliers

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Message-ID: <473BFB3D.1060802@overt.org>
Date:	Wed, 14 Nov 2007 23:54:37 -0800
From:	Philip Langdale <philipl@...rt.org>
To:	LKML <linux-kernel@...r.kernel.org>
CC:	"Langsdorf, Mark" <mark.langsdorf@....com>
Subject: Re: powernow-k8 and non-standard multipliers

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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