If unsure, say N.
+config PATA_MACIO
+ tristate "Apple PowerMac/PowerBook internal 'MacIO' IDE"
+ depends on PPC_PMAC
+ help
+ Most IDE capable PowerMacs have IDE busses driven by a variant
+ of this controller which is part of the Apple chipset used on
+ most PowerMac models. Some models have multiple busses using
+ different chipsets, though generally, MacIO is one of them.
+
+
endif # ATA_SFF
endif # ATA