Messages in this thread | | | Date | Tue, 30 Nov 2010 12:20:32 +0100 | From | Sebastian Andrzej Siewior <> | Subject | Re: [PATCH 03/11] x86/dtb: Add a device tree for CE4100 |
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Benjamin Herrenschmidt wrote: > On Mon, 2010-11-29 at 23:47 +0000, Alan Cox wrote: >> That may not be wise. Your real bus heirarchy may not be architecturally >> defined on some systems so you can't incorporate it into code, nor is it >> necessarily a heirarchy - eg some of the Geodes. > > Ok, so I'd suggest doing something like: > > - pci is below the corresponding atom node > - isa is a child of pci > > The later is a useful representation even if it doesn't correspond to > reality. From an address representation perspective, ISA can be > considered somewhat as a substractive decoding child of PCI (again even > if that's not 100% true), which simplifies the representation in the > device-tree a bit, and allows to still have things like VGA devices on > the PCI segment that decode IO ports in the ISA range.
okay.
> Cheers, > Ben.
Sebastian
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