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Subject: Re: [PATCH 15/16] Add device tree for Ebony
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Segher Boessenkool <segher@kernel.crashing.org>
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Date: Thu, 15 Feb 2007 08:30:43 +1100
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> There cannot *exist* any children of the node.  Unless
> your hardware is really weird.  I guess it is :-)
> 
> In such a case, you just don't put a "reg" property in
> the kid nodes.

No. The #address-cells in the interrupt controller is necessary to
define the size of the unit address part of the unit interrupt specifier
of interrupt children. Re-read your spec :-)

Having it set to 0 provides the necessary definition so that the "right
hand" members of an interrupt map don't need a unit address in their
unit interrupt specifier.

Ben.