Interrupt mapping for MPC8323 board

[Praveen VS]

We have a board similar to the MPC8323 rdb. In the board we have
connected the IDSEL to AD18 & we have only one minipci connector for it. We
have interfaced a Wlan Card . When we do 

# lspci -x  we get following

00:12.0 Network controller: RaLink RT2561/RT61 802.11g PCI
00: 14 18 01 03 07 00 10 04 00 00 80 02 08 80 00 00
10: 00 80 00 90 00 00 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 01 06 00 00 14 18 61 25
30: 00 00 00 00 40 00 00 00 00 00 00 00 13 01 00 00

In our circuit INTA is connected to IRQ4 . We are unable
to transmit thro this card. We are not getting any interrupts.We want to
make sure where to give the mapping of interrupts ? 
how to give that for IDsel AD 18, INTA should be mapped to IRQ4 .

Is it that we need to change the dts file & create a new dtb? if so  where to get exact meaning of how to configure "interrupt mapping" in the dts file


Regards
Praveen 
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