Date: Sat, 27 Feb 2010 23:44:05 +0100 From: Andreas Tobler <andreast-list@fgznet.ch> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: freebsd-ppc@freebsd.org Subject: Re: Fan/Power controls Message-ID: <4B89A035.6060807@fgznet.ch> In-Reply-To: <4B8997BD.5080601@freebsd.org> References: <4B8984BF.5080607@oracle.com> <4B898D00.9030706@fgznet.ch> <4B898E84.1040200@gmail.com> <4B89930D.3060800@fgznet.ch> <4B8997BD.5080601@freebsd.org>
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On 27.02.10 23:07, Nathan Whitehorn wrote: > Andreas Tobler wrote: >> On 27.02.10 22:28, Alexander Bakst wrote: >>> (Switched my non-work e-mail) >>> >>> Well, I actually am using a fancy apple G5 - I belive it is a power >>> 970fx, not sure though. I'm not even sure how to check the current clock >>> frequency of my cpu. To be honest, it would be fantastic if it weren't >>> running at the highest speed, since I would like to save power. I don't >>> know if the kernel will tell the cpu to snooze/nap. >> >> Hm, it is a 970FX @ 2000.36 MHz. >> I'm confused that there is no smu? >> Maybe this one lacks the smu. According to the docs I have, the 7,3 >> behaves similar to the 7,2. And the 7,2/3 do not have an smu. The cpu >> speed is controlled via freq and volt. And some nasty gpio interrupts >> @ Nathan :) This bites me currently! >> >> Can you boot this machine into OS-X and see what it tells you about >> the CPU speed? >> >> Hopefully I'm wrong :) > The CPU speed is only low if you break into OF at boot. If you just let > it autoboot on PowerMac 7,2 and 7,3 (and RackMac 3,1), it has the > correct value. Hm, for my understanding, how can I boot w/o OF into netboot mode? IOW, my CPU speed is always wrong while doing so. > Unfortunately, Andreas is right that your machine is > SMU-free, and so there is no fan control at the moment. I believe he is > working on fixing that, and, if you are feeling ambitious, you could try > working together. It should be fairly straightforward, and your other > options, unfortunately, are waiting or falling back to Debian. I currently work on a cpufreq driver for these 'cranky' PowerMac7,2/3,RackMac3.1. And I suffer some gpio understanding. The fan control will take some more time since I need some i2c drivers first. Andreas
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