Support for Mobile Athlon XP - M ?

Support for Mobile Athlon XP - M ?

[Felix Krull]

Hi!

I modified my Athlon XP (Barton core) to be a mobile XP - M by bridging 
some open bridges according to http://fab51.com/cpu/barton/athlon-e24.html .
I booted my old Win installation and checked the success with 
CrystalCPUID. x86info mentions the cpu to be PowerNow capable:

PowerNOW! Technology information
Available features:
         Temperature sensing diode present.
         Bus divisor control
         Voltage ID control

But unfortunatelly cpufreq does not seem to support my XP-M. I am not 
able to load the module powernow-k7 into the kernel. There is no entry 
for cpufreq under the /sys tree.

Is there a way to get cpufreq working with this upgraded cpu or will I 
have to downgrade my installation to win in order to slow down my cpu?

Greetings
Felix

Re: Support for Mobile Athlon XP - M ?

[Bruno Ducrot]

On Sun, Jun 19, 2005 at 11:01:07AM +0200, Felix Krull wrote:
> Hi!
> 
> I modified my Athlon XP (Barton core) to be a mobile XP - M by bridging 
> some open bridges according to http://fab51.com/cpu/barton/athlon-e24.html .
> I booted my old Win installation and checked the success with 
> CrystalCPUID. x86info mentions the cpu to be PowerNow capable:
> 
> PowerNOW! Technology information
> Available features:
>         Temperature sensing diode present.
>         Bus divisor control
>         Voltage ID control
> 
> But unfortunatelly cpufreq does not seem to support my XP-M. I am not 
> able to load the module powernow-k7 into the kernel. There is no entry 
> for cpufreq under the /sys tree.
> 
> Is there a way to get cpufreq working with this upgraded cpu or will I 
> have to downgrade my installation to win in order to slow down my cpu?
> 

powernow-k7 use some BIOS table(s) in order to retrieve supported
frequencies.  Your BIOS do not generate them.  Thus powernow-k7 will
fail.

In order to get it working, you have to add such information directly
to the driver.  There should be some patches around this mailing-list
to this end.

Cheers,

-- 
Bruno Ducrot

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.