You may be glad to be wrong, today I managed to enable HPET on my ICH4 chipset and it should be possible to get it running with ICH3 chipsets - AFAICT they do have hidden HPET functionalities. Just grab a 2.6.22-rc4 [1] kernel, patch it with 2.6.22-rc4-hrt2 [2] and there you go :)
This output is from my ICH4-based machine: # cat /sys/devices/system/clocksource/clocksource0/available_clocksource hpet acpi_pm pit jiffies tsc # grep hpet /proc/timer_list Clock Event Device: hpet set_next_event: hpet_legacy_next_event set_mode: hpet_legacy_set_mode I really like this stuff, my CPU goes into C3 for up to 80ms... Peter [1] http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.21.tar.bz2 ; http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.22-rc4.bz2 [2] http://www.tglx.de/projects/hrtimers/2.6.22-rc4/patch-2.6.22-rc4-hrt2.patch On Sun, 2007-05-27 at 16:29 +0200, Andre Müller wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > Peter Ganzhorn wrote: > > Well I read that even ICH3 chipsets did support HPET, though they do > > have different adresses and are not recognized correctly until now. > > I am not an expert on that topic, but maybe there is a chance that my > > laptop has the feature and I may be able to use it - at least I hope > > so ;) > > > > Peter > > I've got an ICH4 chipset and gave it a try unsuccessfully -- > the kernel docs say it has to be activated in the BIOS, > which does not have an option for it. > I tend to trust the IBM bios's functionality and therefore > concluded I drew a blank. > > I will be glad to hear I'm wrong, though :-) > > Andre > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.7 (GNU/Linux) > > iD8DBQFGWZXWhYOgL/M0VS0RCpxaAJ9ehqPJm5kdNiRFX2soFgZmp97VtACgm5Zp > zVXgQ36prC4FQmcFTP5YrY0= > =CMWJ > -----END PGP SIGNATURE----- > _______________________________________________ > Power mailing list > [email protected] > http://www.bughost.org/mailman/listinfo/power _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
