From: Andrey Borzenkov <arvidjaar@mail.ru>
To: Dave Jones <davej@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: cpufreq on Toshiba Portege 4000?
Date: Sun, 8 Jan 2006 20:33:47 +0300 [thread overview]
Message-ID: <200601082033.48520.arvidjaar@mail.ru> (raw)
In-Reply-To: <20050801180639.GA8530@redhat.com>
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On Monday 01 August 2005 22:06, Dave Jones wrote:
> On Mon, Aug 01, 2005 at 09:56:17PM +0400, Andrey Borzenkov wrote:
> > Toshiba documentation claims it supports speedstep technology. It has
> > Ali chipset and PIII CPU:
> >
> > {pts/1}% lspci
> > 00:00.0 Host bridge: ALi Corporation M1644/M1644T Northbridge+Trident
> > (rev 01) 00:01.0 PCI bridge: ALi Corporation PCI to AGP Controller
> > 00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
> > 00:04.0 IDE interface: ALi Corporation M5229 IDE (rev c3)
> > ...
> >
> > Any cnahce to use cpufreq (or compatible) technique here?
>
> Nope, The speedstep-smi driver only works on Intel chipsets.
>
well, acpi-cpufreq appears to work here. The only drawback is that BIOS
supports only 2 states (750 and 500MHz) while Toshiba HCI interface can
switch between 8 levels; unfortunately I have no idea what frequencies they
have.
Is there any utility to measure actual CPU frequency? If I can determine real
speed, I could try extend DSDT to support other levels too.
TIA
- -andrey
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prev parent reply other threads:[~2006-01-08 17:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-01 17:56 cpufreq on Toshiba Portege 4000? Andrey Borzenkov
2005-08-01 18:06 ` Dave Jones
2006-01-08 17:33 ` Andrey Borzenkov [this message]
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