From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Jens Osterkamp <Jens.Osterkamp@de.ibm.com>,
stk@de.ibm.com, Milton Miller <miltonm@bga.com>,
Paul Mackerras <paulus@samba.org>,
hpenner@de.ibm.com, linuxppc64-dev@ozlabs.org
Subject: Re: [RFC] powerpc: cell interrupt controller updates
Date: Tue, 21 Mar 2006 17:27:22 +1100 [thread overview]
Message-ID: <1142922442.12137.12.camel@localhost.localdomain> (raw)
In-Reply-To: <200601180020.17301.arnd@arndb.de>
On Wed, 2006-01-18 at 00:20 +0100, Arnd Bergmann wrote:
> The interrupt-parent relationship between the spider and iic controllers
> is just an approximation, each spider pic can also send interrupts to any
> other interrupt controller in the system (all six of them, if you count
> the SMT threads as separate interrupt targets), but for best performance, it
> is usually wise to use local interrupt delivery.
We could either express that by having a new property that we could call
"multiple-parents" or something like that with a list of parents... or
we could have a "virtual" iic that is a single controller in the
device-tree (the later makes a lot of sense I think) with sub-nodes for
the actual iic's to be used maybe by the iic driver for probing... I
still need to think about that one though..
Ben.
parent reply other threads:[~2006-03-21 6:27 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <200601180020.17301.arnd@arndb.de>]
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