Date: Thu, 29 Oct 2020 12:36:54 +0000 From: Javi Hotmail <volkovdablo@hotmail.com> To: Michael Tuexen <Michael.Tuexen@macmic.franken.de> Cc: freebsd-ppc@freebsd.org Subject: Re: Question about xserve G5 Message-ID: <DB8PR04MB6860543600F2C6FDEDF32BD8AC140@DB8PR04MB6860.eurprd04.prod.outlook.com> In-Reply-To: <B20755EC-8EA1-4326-B4D8-EF657ACF73ED@macmic.franken.de> References: <DB8PR04MB68602F9341DEED4BA6808046AC140@DB8PR04MB6860.eurprd04.prod.outlook.com> <B20755EC-8EA1-4326-B4D8-EF657ACF73ED@macmic.franken.de>
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If I'm not mistake the issue then is how the PPC implementation reads the device tree data from open firmware correct?. I believe this implementation is within: pcr.c pmcr.c pmufreq.c Thanks in advance, Javi. On 29/10/2020 12:26, Michael Tuexen wrote: > >> On 29. Oct 2020, at 10:51, Javi Hotmail <volkovdablo@hotmail.com> wrote: >> >> Hello all, >> >> I'm new in this mailing list, although I've been going back and forth >> with PPC (G4/G5) and FreeBSD since 9.0. >> >> I have a question that perhaps some of you already stumbled across, but >> I wanted to know if there is a way to get it to work before I jump in >> the code. >> >> I have a xserve G5 dual 2.3Ghz, and I installed FreeBSD 12.1. Works >> quite well, but I cannot get cpufreq + powerd/powerdxx to work at all. >> >> I get this: >> >> # powerdxx >> powerd++: (ENOFREQ) cannot access dev.cpu.0.freq, at least the first CPU >> core must support frequency updates >> >> >> This is the relevant part of sysctl: >> # sysctl dev.cpu >> dev.cpu.1.%parent: cpulist0 >> dev.cpu.1.%pnpinfo: name=PowerPC,G5 >> dev.cpu.1.%location: >> dev.cpu.1.%driver: cpu >> dev.cpu.1.%desc: Open Firmware CPU >> dev.cpu.0.%parent: cpulist0 >> dev.cpu.0.%pnpinfo: name=PowerPC,G5 >> dev.cpu.0.%location: >> dev.cpu.0.%driver: cpu >> dev.cpu.0.%desc: Open Firmware CPU >> dev.cpu.%parent: >> >> The issue is that after few minutes the fans ramp up to insane levels, >> and my goal with this is to use powerd or powerdxx to manage the situation. > The fans ramping up is a known issue. One way to work around it is to > disable SMP. > > To disable SMP, put in /boot/loader.conf > kern.smp.disabled=1 > > Best regards > Michael >> >> Thanks in advance, >> >> Javi. >> >> _______________________________________________ >> freebsd-ppc@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-ppc >> To unsubscribe, send any mail to "freebsd-ppc-unsubscribe@freebsd.org"
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