Re: [patch] amd athlon cooling on kt266/266a chipset

[Daniel Nofftz]

On Wed, 23 Jan 2002, Vojtech Pavlik wrote:
> Won't ACPI idle do that well enough?

yes ... and no!
first: my patch is useless, if you don't activate acpi idle calls ...
second: the idle calls will not save power on an athlon/duron/athlon xp ,
unless a specific bit in the chipset is set, which will cause the chipset
to disconnect the frontside bus of the cpu ... and this is what the patch
does: it sets only the bit in the northbridge of the kt133/kx133 and
kt266/266a chipset ... -> now the acpi idle calls will bring power saving
and lesser temperature
the patch inserts a pci_quirk function which sets the bit in the
northbridge ... (at the boot-prompt you have to pass the comment
amd_disconnect=yes to use this function ...)

daniel

# Daniel Nofftz
# Sysadmin CIP-Pool Informatik
# University of Trier(Germany), Room V 103
# Mail: [e-mail]