Messages in this thread | | | Date | Sun, 24 Feb 2002 23:08:55 +0100 | From | Vojtech Pavlik <> | Subject | Re: Flash Back -- kernel 2.1.111 |
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On Mon, Feb 25, 2002 at 09:03:10AM +1100, Paul Mackerras wrote: > Vojtech Pavlik writes: > > > > 83 MHz 55 MHz 41 MHz 0111 1101 > > > > This one is a problem, because 41*2 != 55. However, this is also illegal > > according to the PCI spec. > > Where does the PCI spec say that is illegal?
Well, I'm assuming the 41 MHz clocked bus is not a 66-MHz type PCI bus (doesn't have the 66 MHz bit set and can't operate at 20.5 MHz if you plug in a card that can't do 66 MHz operation), rather it's an overclocked 33 MHz bus.
And running PCI over 33 MHz isn't legal in the PCI spec as far as I know. You can go lower, but I think the limit is 16 MHz there.
-- Vojtech Pavlik SuSE Labs - 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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