Thomas Renninger wrote:
Oh, they are part of this general Asus \\_SB.ATKD device, which is only
used by asus_laptop.c until now?
I believe eeepc-laptop is also accessing the same device - at least it
is calling other methods defined in the same part of the DSDT although
it doesn't seem to be using that name to reach them.
Some more questions:
Why are they providing their own cpufreq interface and not following the
spec (providing _PSS, ..)?
Could it be that you are only throttling the CPU?
Are these functions already used by the ACPI tables internally?
- could be dangerous
- could be helpful -> Is there some upper level device/interface in ASL?
Could it happen that upcoming machines provide this interface (the two ACPI
functions) and also can do real CPU frequency/volt switching, e.g. via
acpi-cpufreq?
Well the recent eee's are all Atom based, which I assume has proper
SpeedStep support but the early ones have a Celeron processor.
The history is that the original eee, the 701, was underclocking a
900MHz CPU at 630Mhz and in the 900 they added support for running at
full speed with the BIOS able to switch between the two speeds. I assume
it just changes the clock multiplier or something.
The 901 and later of course use the Atom and presumably work differently.
Tom
--
Tom Hughes (tom@xxxxxxxxxx)
http://www.compton.nu/
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