On Mon, Feb 25, 2002 at 09:01:06AM +1100, Paul Mackerras wrote:
> Vojtech Pavlik writes:
>
> > On Sun, Feb 24, 2002 at 02:29:03PM -0600, Troy Benjegerdes wrote:
> > > I believe there are systems with 33mhz pci and 50mhz pci. Trying to find a
> > > 'common' base clock just seems to be an excercise in confusion. The only
> > > thing that really makes sense is 'how fast is said PCI device clocked'.
> >
> > Show me one.
>
> We have some RS/6000 machines that have two separate PCI buses (two
> host bridges) that run at 33MHz and 50MHz respectively. Fortunately
> we also get a device tree from the firmware that tells us this.
I really wonder why the 50 MHz one doesn't run at 66 MHz, and what
happens if you plug in a 66MHz non-capable card to the 50 MHz bus.
-- 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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