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Date:	Fri, 11 Sep 2009 00:24:00 +0200
From:	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>
To:	Scott Wood <scottwood@...escale.com>
Cc:	linuxppc-dev@...abs.org, Alemao <xcarandiru@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: MPC85xx External/Internal Interrupts

* Sebastian Andrzej Siewior | 2009-09-10 15:15:44 [+0200]:

>* Scott Wood | 2009-09-09 13:28:57 [-0500]:
>
>>> That's why you always have an offset of 16 between every internal
>>> interupt source number in the MPC855ERM document and those weired
>>> numbers in the device tree :)
>>
>>something in the dts bindings that explains it.  Am I correct in assuming
>>that this particular internal/external split is Freescale-specific and
>>not a general OpenPIC thing?
>Yes it looks like this. 
>manual for both of them to check. I also don't have an OpenPIC spec to
>check there.
I had to say this. Now I got one. According to the OpenPIC there is no
such thing as an internal and external interrupt sources. Base + 0x10000
is the first interrupt source register and the number of interrupt
sources is specified in the feature register. 

So the split is a FSL thing.
What do you thing about making this clear? Adding into every .dts a
comment right on top or maybe in
Documentation/powerpc/dts-bindings/fsl/?

>>
>>-Scott

Sebastian
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