Re: [RFC] Device tree for new desktop platform in arch/powerpc

["Gerhard Pircher" <gerhard_pircher@gmx.net>]

-------- Original-Nachricht --------
Datum: Thu, 21 Jun 2007 22:42:13 +1000
Von: Benjamin Herrenschmidt <benh@kernel.crashing.org>
An: David Gibson <david@gibson.dropbear.id.au>
CC: Gerhard Pircher <gerhard_pircher@gmx.net>, linuxppc-dev@ozlabs.org, list <linuxppc-dev@ozlabs.org>
Betreff: Re: [RFC] Device tree for new desktop platform in arch/powerpc

> > >               interrupt-controller;
> > >               reg = <20 2 a0 2 4d0 2>;
> > >               reserved-interrupts = <2>;
> 
> I'm currious about the above though, what is it ?

Quote from the CHRP ISA interrupt controller device binding document:
“reserved-interrupts”
Standard property name to define reserved interrupts.
prop-encoded-array: An integer array, encoded with encode-int.
The value of this property shall be a list of ISA interrupts which cannot
be assigned due to cascading, wiring, or other reasons. Only the irq# part
of the property is pertinent to this use.
- End -

> > >               #address-cells = <1>;
> 
> Why #address-cells set to 1 ? In a PIC node, in fact, I would expect it
> to be 0 to avoid any spurrious "reg" matching for interrupts.
Yeah, I got them wrong almost everywhere.

regards,

Gerhard
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