sd cards support on osk5912

Hi,
I have kernel sources 2.6.16 for mmc/sd card support. MMC/SD
Drivers are present in
drivers/mmc.

The MMC/SD Card Support (Platform init routinues) are there for
innovator board.
(board-innovator.c).

If i want OSK to support SD (SD I/F is on a addon board to OSK)

What changes i need to make in the kernel sources so that drivers
can access SD cards.

Please Advice,

Regards,
sriram