questions regarding interrupt routing

[Shaju Abraham]

Hi

I am trying to port device tree on to the SMDKV210 (ARM cortex A8
controller) board. In this SoC we have 4 VICs as interrupt controller
(daisy chained) where all the 32 interrupt sources on each controller
is fully populated.
There are interrupts which are multiplexed to the same interrupt pin
(example : external interrupt 16-31 muxed to irq 16 of VIC0).Is there
a standard way to pass the demux information from the device tree? Can
I use a inetrrupt specifier like interrupts = <interrupt numer
subinterrupt number>?

Regards
Shaju