Re: Intel Speedstep technology switch

Re: Intel Speedstep technology switch

[Tigran Aivazian]

Hi Michal,

I don't think it does but I think Arjan was working in the area related to
what you are asking. I cc'd him and the "whole world, or what is left of
it" -- maybe they know.

Regards,
Tigran

On Sun, 21 Apr 2002, Michal Semler wrote:

> Hello Tigran,
> I want to ask u, if linux kernel 2.4.18 supports switching speed of CPU
> using Intel Speedstep Technology. My computer starts with low speed
> and switch makes OS not BIOS :( In Windows it switch to fast speed,
> but in linux I cant work on fast speed.
>
> Is there a possibility to switch my CPU to fast speed?
>
> Thanks
>
> Michal
>

Re: Intel Speedstep technology switch

[Arjan van de Ven]

On Sun, Apr 21, 2002 at 12:45:37PM +0100, Tigran Aivazian wrote:
> Hi Michal,
> 
> I don't think it does but I think Arjan was working in the area related to
> what you are asking. I cc'd him and the "whole world, or what is left of
> it" -- maybe they know.

We're getting close.  Right now AMD K6+, K7 PowerNOW
(AMD speak for Speedstep) is supported, as well as Cyrix cpus. Intel
is lagging a bit due to Intel not giving
specs; but the reverse engineering is making progress on this part.
 

-- 
But when you distribute the same sections as part of a whole which is a work 
based on the Program, the distribution of the whole must be on the terms of 
this License, whose permissions for other licensees extend to the entire whole,
and thus to each and every part regardless of who wrote it. [sect.2 GPL]

Re: Intel Speedstep technology switch

[Dave Jones]

On Sun, Apr 21, 2002 at 07:49:30AM -0400, Arjan van de Ven wrote:
 > We're getting close.  Right now AMD K6+, K7 PowerNOW
 > (AMD speak for Speedstep) is supported, as well as Cyrix cpus. Intel
 > is lagging a bit due to Intel not giving
 > specs; but the reverse engineering is making progress on this part.

Yup, Dominik Brodowski has done quite a bit of work recently, and is
'almost there' with the newer style of speedstep. (The one used in ICH
chipsets), the older BX chipset style of speedstep still needs some
thinking.

-- 
| Dave Jones.        http://www.codemonkey.org.uk
| SuSE Labs