Re: [RFC] powerpc: cell interrupt controller updates

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.