From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Scott Wood <scottwood@freescale.com>
Cc: Linuxppc-dev@ozlabs.org, Gary Thomas <gary@mlbassoc.com>
Subject: Re: More DTS questions
Date: Thu, 04 Sep 2008 13:18:55 +1000 [thread overview]
Message-ID: <1220498335.4879.42.camel@pasglop> (raw)
In-Reply-To: <20080903171225.GB10979@loki.buserror.net>
> > The things that truly aren't clear are the various lists.
> > For example, how does "interrupt-map" and "interrupts" describe
> > how the interrupts are handled?
>
> It is described in this document:
> http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf
And in Documentation/powerpc/booting-without-of.txt
> > I don't see any reference in the code to these names (how does a driver
> > get access to such properties?)
>
> Look in arch/powerpc/kernel/prom_parse.c.
>
> You'll want to change &mpc5200_pic in your interrupt-map to point to your
> FPGA interrupt controller, and change the interrupt specifiers accordingly.
Yeah, basically. You create a node for your cascaded interrupt
controller, point some interrupts at it, etc...
Ben.
prev parent reply other threads:[~2008-09-04 3:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-03 13:36 More DTS questions Gary Thomas
2008-09-03 17:12 ` Scott Wood
2008-09-04 3:18 ` Benjamin Herrenschmidt [this message]
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