* Re: [RFC] powerpc: cell interrupt controller updates
[not found] ` <200601180020.17301.arnd@arndb.de>
@ 2006-03-21 6:27 ` Benjamin Herrenschmidt
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From: Benjamin Herrenschmidt @ 2006-03-21 6:27 UTC (permalink / raw)
To: Arnd Bergmann
Cc: Jens Osterkamp, stk, Milton Miller, Paul Mackerras, hpenner,
linuxppc64-dev
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.
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