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Date: Wed, 23 Feb 2005 11:10:36 -0800
From: Nate Lawson <nate@root.org>
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To: Maxim Konovalov <maxim@macomnet.ru>
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cc: current@freebsd.org
Subject: Re: patch: p4tcc and speedstep cpufreq drivers
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Maxim Konovalov wrote:
> Hi Nate,
> 
> Sony PCG-505BX [1].  With your patch I've got several new freq_levels:
> 
> dev.cpu.0.freq_levels: 1990/-1 1741/-1 1492/-1 1305/-1 1243/-1 1195/-1
> 1119/-1 1088/-1 1045/-1 995/-1 932/-1 896/-1 870/-1 776/-1 746/-1
> 652/-1 597/-1 559/-1 522/-1 497/-1 448/-1 373/-1 336/-1 298/-1 248/-1
> 217/-1 186/-1 149/-1 124/-1 93/-1 62/-1 37/-1
> 
> starting from 373 IIRC.
> 
> When I try to change dev.cpu.0.freq several of these values produce
> "invalid argument" e.g. 1305, 1119, 1088.  The system is starting
> working very slow at 448 and practically hang at 298.
> 
> [1] http://maxim.int.ru/stuff/SONNIE.dmesg
>     http://maxim.int.ru/stuff/SONNIE.sysctl-a
> 

You have an ASL bug.  The status register was marked as being 1 bit 
wide.  The smallest value we can work with is a byte.  I've committed a fix.

-- 
Nate