Re: SSDT on Sony VAIO

[Dominik Brodowski <linux-JhLEnvuH02M@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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