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From: Dominik Brodowski <linux-JhLEnvuH02M@public.gmane.org>
To: "Adachi, Kenichi" <aileenja-dTzOdQ2U+/YAvxtiuMwx3w@public.gmane.org>
Cc: 'Nathan Conrad' <conrad-aYgNHrD+FxfR7s880joybQ@public.gmane.org>,
	acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	andrew.grover-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
Subject: Re: SSDT on Sony VAIO
Date: Thu, 16 Jan 2003 20:24:06 +0100	[thread overview]
Message-ID: <20030116192406.GA2825@brodo.de> (raw)
In-Reply-To: <000f01c2bd83$e0c50950$134425db-F8JvWDuGsZU@public.gmane.org>

Hi,

On Fri, Jan 17, 2003 at 02:22:42AM +0900, Adachi, Kenichi wrote:
> Incidentally I didn't know the existence of CpuFreq project when I made
> the above statement. Dominik, if BIOS tells OS via ACPI _PCT to access
> FFH to initiate FID/VID change (in AMD PowerNow!), how current code
> coordinates it? I'm going to look into code soon, but I'd appreciate
> very much if you give me some insight in advance.

Currently, it fails with this error message. If you add your patch,
frequency transitions will still fail - the ACPI processor driver doesn't
know anything about the PowerNow internals. So loading of teh ACPI cpufreq
driver will be aborted at latest in acpi_cpufreq_init, if not earlier.

So, actually I can't think of any way to use the ACPI processr driver for
CPU frequency transitions in these cases - you need to use the "legacy" 
powernow-k7.c driver instead (which is currently developed by Dave Jones).

	Dominik


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  parent reply	other threads:[~2003-01-16 19:24 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-16  1:08 SSDT on Sony VAIO Grover, Andrew
     [not found] ` <F760B14C9561B941B89469F59BA3A84725A11E-sBd4vmA9Se4Lll3ZsUKC9FDQ4js95KgL@public.gmane.org>
2003-01-16  7:46   ` Dominik Brodowski
     [not found]     ` <20030116074624.GA1239-JhLEnvuH02M@public.gmane.org>
2003-01-16 16:51       ` Nathan Conrad
     [not found]         ` <20030116165128.GA13608-aYgNHrD+FxfR7s880joybQ@public.gmane.org>
2003-01-16 17:19           ` Adachi, Kenichi
2003-01-16 17:22           ` Adachi, Kenichi
     [not found]             ` <000f01c2bd83$e0c50950$134425db-F8JvWDuGsZU@public.gmane.org>
2003-01-16 19:24               ` Dominik Brodowski [this message]
2003-01-16 18:46           ` Dominik Brodowski
  -- strict thread matches above, loose matches on Subject: below --
2003-01-17  7:37 Jens Haug
2003-01-17  7:19 Jens Haug
2003-01-11  2:42 Nathan Conrad

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