Messages in this thread | | | Subject | Re: [PATCH 03/11] x86/dtb: Add a device tree for CE4100 | From | Benjamin Herrenschmidt <> | Date | Tue, 30 Nov 2010 07:05:28 +1100 |
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On Mon, 2010-11-29 at 13:07 -0600, Scott Wood wrote: > > The motivation for simple-bus comes from Linux, but its definition is > OS-neutral. It indicates that no special bus knowledge is required to > access the devices under it.
That's never 100% true. In the case of ISA it's even less true due to the difference between IO and Memory space.
> I don't think it applies to ISA, though -- I/O space is special bus > knowledge, and the "ranges" looks weird for memory-space as well.
Right.
> If we're going to get rid of device_type here, it would be nice to > have some other way to indicate that this node follows the ISA > binding, without having to recognize an implementation-specific > compatible.
The code in drivers/of/address.c uses the name property to match isa busses.
Cheers, Ben.
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