Legacy ISA registers/interrupts in PCI device tree node

Segher Boessenkool segher at kernel.crashing.org
Tue Jul 17 01:05:49 EST 2007

>>> I wonder, if there is a recommended way to specify ISA register
>>> addresses and interrupts for a PCI device (unlike for a PCI2ISA
>>> bridge)?
>> The PCI binding describes the required way to do this.
> Hmm, I must reread the PCI binding spec. It didn't seem to contain any
> information about this.

You can describe address regions in "reg" that aren't
corresponding to any PCI BAR.  There is also a facility
to describe subtractive decoding (though I don't think
you need this).

>> Yes, it should, even if you don't use this in the Linux
>> kernel yet.
> Well, I still have to wire up the IDE interrupts in the platform setup
> code, right?

Sure, if you want those interrupts to work, anyway ;-)


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