Re: 2.5.64 - cpu freq not turned on

[CaT]

On Fri, Mar 07, 2003 at 12:32:28AM +0100, Dominik Brodowski wrote:
> > Now I know it worked before cos I noticed it and played about with the 8
> > speed steps I had available to me (and I thought I only had 2).
> 
> Actually, SpeedStep is (so far, Banias isn't out to the public market yet)
> only 2 states. What you had running was probably the p4-clockmod driver for
> Intel Pentium 4 processors. But that does only throttle the CPU, which

Ahhh. I have a P3 though.

> causes (at best) linear energy saving while real "speedstep" is much better
> than that. You can see what cpufreq driver is loaded by cat'ting
> scaling_driver in the cpufreq sysfs directory for that cpu. 

Not there.

> This directory moved in 2.5.64 - and that's why you probably think there was
> some regression (in fact, there is, but patches to fix that are on their
> way...) - the sysfs interface to cpufreq is now in 

2.5.63 doesn't turn speedstep on for me either.

> > What information is needed about my chipset to make the code detect it
> > properly?
> 
> lspci -- maybe it's a ich4-m southbridge, then the attached patch
> (also sent to Linus a few moments ago) might help.

Didn't apply the patch cos I don't see that in the lspci output:

00:00.0 Host bridge: Intel Corp. 440BX/ZX - 82443BX/ZX Host bridge (rev 03)
00:01.0 PCI bridge: Intel Corp. 440BX/ZX - 82443BX/ZX AGP bridge (rev 03)
00:07.0 Bridge: Intel Corp. 82371AB PIIX4 ISA (rev 02)
00:07.1 IDE interface: Intel Corp. 82371AB PIIX4 IDE (rev 01)
00:07.2 USB Controller: Intel Corp. 82371AB PIIX4 USB (rev 01)
00:07.3 Bridge: Intel Corp. 82371AB PIIX4 ACPI (rev 03)

The rest are sound, cardbus etc.

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