AM4378: NAND: are there any restriction when using multiple NAND?

Part Number:AM4378

Team,

Regarding using GPMC for NAND:

I assume that it is possible to use multiple NAND devices on the GPMC.
-Are there some restriction on which GPMC_CSNx should be used when multiple NAND need to be used?
-Is there an ECC module present for every CSN memory space? or is there one single ECC module for the entire GPMC?
-Are the SW drivers (Linux, RTOS) supporting multiple NAND devices interfaced on the GPMC?

Thanks in advance,

Anthony