Messages in this thread | | | Date | Tue, 18 Feb 2003 22:58:19 +0100 | From | Pavel Machek <> | Subject | Re: Select voltage manually in cpufreq |
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Hi!
> > I've added possibility to manualy force specified frequency and > > voltage... That's fairly usefull for testing, and I believe this (or > > something equivalent) is needed because every 2nd bios seems to be > > b0rken. > > Why are all the power/cpu patches so complex? Can't we have a > two-mode style operation, "slow-low-power" and "fast-high-power" or > something? Would that not work with 99% or what people need and also > be somewhat more uniform across platforms, CPUs, etc?
Well, and does slow-low-power mean 300MHz, 1.4V as bios said, or 300MHz, 1.2V which is probably also safe?
What about "as-fast-as-possible-but-not-exceed-140MHz-because-batteries-are- running-low-and-can-not-give-enough-current"? That's different from "fast-high-power", but it is *also* different from "slow-low-power". [This actually matters on beasts like zaurus]. What about "as-low-power-as-possible-but-make-sure-you-can-keep-display-up"? [On some machines cpu must be > some HMz for display to still work].
Power managment is complex... Pavel -- Casualities in World Trade Center: ~3k dead inside the building, cryptography in U.S.A. and free speech in Czech Republic. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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