Re: [PATCH 1/2] CPUFREQ: Enable acpi-cpufreq driver for VIA/Centaur CPUs

Matthew Garrett
2009-06-08T23:48:42Z

On Mon, Jun 08, 2009 at 04:15:22PM -0500, Michael S. Zick wrote:

> Phooey, close but no cigar - - -
>
> root@cb01:/sys/devices/system/cpu/cpu0/cpufreq# cat scaling_available_frequencies
> 1200000 1000000 800000 600000 400000
> root@cb01:/sys/devices/system/cpu/cpu0/cpufreq# cat stats/time_in_state
> 1200000 3281
> 1000000 120
> 800000 130
> 600000 234
> 400000 52980
> root@cb01:/sys/devices/system/cpu/cpu0/cpufreq
>
> It loads, it appears to work, but that lowest 400Mhz has ACPI entries
> even though this is a 600Mhz..1200Mhz chip.

If the BIOS tables claim it then it's likely Windows uses it on the same
hardware. What's the stability like with the ACPI code?

--
Matthew Garrett | mjg59@srcf.ucam.org