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From: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH 12/14] Add device tree for Ebony
Date: Thu, 22 Feb 2007 07:49:53 +0100
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org, Yoder Stuart-B08248 <stuart.yoder@freescale.com>,
	David Gibson <david@gibson.dropbear.id.au>
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>> Since UIC1 is cascaded off UIC0 in the interrupt tree,
>> UIC1 should have an interrupt-parent pointing to UIC0
>> so the interrupt tree can be traversed to the root.
>
> Not necessary if UIC0 is the device tree parent of UIC1.

For the archives: this is wrong, all interrupt controllers
(except the root one) are required to have an "interrupt-parent"
property -- this is how the root interrupt controller is
determined.


Segher