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

Segher Boessenkool segher at kernel.crashing.org
Fri Jun 22 00:59:33 EST 2007


>>>>               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.

I never found any situation where this property is useful
(you need a lot more information to do anything but static
IRQ routing on ISA anyway), but it doesn't harm anything
either.


Segher




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