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Multiple NAND chips on DM6446

Siddharth Choudhuri
Prodigy 60 points

Hi,

We want to have multiple NAND chips on the same EMIF address/data lines differentiated with chip select. This is using DM6446. Since the bootloader supports a maximum NAND size of 512MB, we are thinking of a solution to have  two NAND chips. Chip#0 is bootloader compatible, and Chip#1 (larger size) is on the same address lines but on a different chip select.

From a driver point of view the Linux MTD driver should be able to make the two chips look like a single virtual NAND having the size equal to the total size of the two chips or whatever mtd partitions the driver makes. This should be possible by adding the map of the two NAND chips in the MTD driver. Does this approach sound right ?

There was a similar post (http://community.ti.com/forums/t/2428.aspx) that seems to be using similar solution.Any thoughts/pitfalls would be appreciated.

thanks,

-sid