Re: [PATCH 1/1] cpufreq: eeepc 900 frequency scaling driver

From: Tom Hughes
Date: Fri Dec 05 2008 - 18:06:04 EST

Thomas Renninger wrote:

The biggest problem I see with these "special" ACPI cpufreq interface is:
Can there be Asus/eeepcs which provide these ACPI functions (maybe dummies on
future machines?), but can still be switched via the spec conform and more efficient acpi-cpufreq driver via PSS tables?

So should we tie this driver to particular DMI signature(s) then? As far as I know it is only useful for the Eee 900 and possibly the 701 when running later BIOSes.

BTW: Have you tried out how much power (or at least battery life time) you

Running with wifi and the screen off, and the CPU busy (doing m5sum of /dev/zero) I get 2:37 run time at 900MHz and 3:09 at 630MHz so the increase in run time is about 20% on that test.


Tom Hughes (tom@xxxxxxxxxx)
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