Enable Dword mode on yenta driver?

[Dan B. Phung]

Is there a parameter/method for setting the transfer type on the yenta 
driver?  My Cardbus controller is (on my thinkpad T30):

02:00.0 CardBus bridge: Texas Instruments PCI1520 PC card Cardbus 
Controller (rev 01)
02:00.1 CardBus bridge: Texas Instruments PCI1520 PC card Cardbus 
Controller (rev 01)

In particular, I'd like to switch between byte, word, and Dword modes.  
Also, how would I query which mode I'm in?

tia,
-dan