Hi all,

I'm trying to enable NAND driver in uboot for my target board. It's a ST nand chip, the part number is nand128w3a(small page, 16M*8bit). After add its data info into the matrix nand_flash_ids[] in the file "include/linux/mtd/nand_ids.h" and add the nand driver interface macros in my board head file, u-boot can find my NAND flash chip. And I can run the command "nand bad" successfully.

But "nand read" and "nand write" failed because of ECC. So I try to remove the macro "CONFIG_MTD_NAND_ECC" from the file "common/cmd_nand.c", now it works. I can run "nand read" and "nand write" successfully. The data wrote into the NAND flash and read back is the same.

I can make sure that the hardware is no problem. I know ECC is very important and can't be disabled. So, Is it a bug of NAND driver? Or did I miss something? Thanks for your any suggestions and comments.

Regards, -Aubrey