Message-ID: <42526635.2010709@gmx.de> Date: Tue, 05 Apr 2005 12:19:33 +0200 From: Sebastian Heutling User-Agent: Mozilla Thunderbird 1.0 (X11/20050111) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Benjamin Herrenschmidt Subject: Re: iBook G3 owners References: <1112594783.26086.22.camel@gaston> In-Reply-To: <1112594783.26086.22.camel@gaston> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IMAPbase: 1112695643 1 X-UID: 1 X-Keywords: Benjamin Herrenschmidt wrote: >Hi ! > >There have been various reports of issues with sleep among others on >iBook G3 equiped with the 750FX processor. Also, the cpufreq code on >these so far didn't change the CPU voltage, which limited the actual >power saving at low frequency. > >I have uploaded various patches that should help fix these issues. Those >patches are all against current linus bk and they should be all applied >in the order below. > >I would really appreciate some tests as I don't have access to any of >these machines. I need to know if cpufreq works reliably with those >patches and if the new voltage control makes any differnece on battery >life (check power consumption in /proc/pmu/battery_*/current when >running on battery) and I need to know if the patches are improving >reliability of sleep/wakeup. > >The 4 patches can be found at these URLs. If you had earlier versions of >some of these, those patches replace them: > >http://gate.crahsing.org/~benh/ppc32-750-errata-fix.diff >http://gate.crahsing.org/~benh/ppc32-pmac-sleep-fix.diff >http://gate.crahsing.org/~benh/cpufreq-add-suspend.diff >http://gate.crahsing.org/~benh/ppc32-cpufreq-gpio-off.diff > >Please, let me know asap, > > Sleep/wakeup works with a modified arch/ppc/platform/pmac_sleep.S (bl reloc_offset was missing which you send later). I still have a strange problem with some programs started in init-Scripts. For example if I run dbus on bootup and directly after that go to sleep and wake-up again my ibook doesn't resume harddisks leaving the following last messages: eth0 resuming PHY ID: 4061e4, addr: 0 eth0: Link is up at 100 Mbps, full duplex. eth0: Pause is disabled If I disable dbus (stop it) and go to sleep, wakeup - no problem. Sometimes it is even enough to just only restart the daemon. I'm not sure about cpufreq. I used to run the cpufreq daemon. With this program I realised three possible frequencies on my ibook: 400, 462, 700 MHz. Using powernowd or directly the userspace governour gives only 400 and 700MHz. So maybe there is something wrong here, too or this specific CPU/ibook does only support 2 states. Details about the ibook: iBook, Dual USB blueberry:~# cat /proc/cpuinfo processor : 0 cpu : 750FX temperature : 1-76 C (uncalibrated) clock : 700MHz revision : 2.2 (pvr 7000 0202) bogomips : 1388.54 machine : PowerBook4,3 motherboard : PowerBook4,3 MacRISC2 MacRISC Power Macintosh detected as : 257 (iBook 2 rev. 2) pmac flags : 0000001b L2 cache : 512K unified memory : 384MB pmac-generation : NewWorld Sebastian