If I am only using the EMIFA bus for a 8-bit NAND interface, can I use the upper 8 bits of the EMIFA data bus and other address lines as GPIO, or is this not allowed?
Specifically, I’m using GPIO4[8:15] as NAND I/O bus and GPIO5[2] and GPIO5[1] as CLE and ALE lines as called out in the AM1808 NAND documentation. But, I would like to use GPIO3[0:7] for GPIO and GPIO5[8:13] as GPIO to run some LEDs and other general purpose items.