nand->ecc.mode = NAND_ECC_HW_OOB_FIRST;
nand->ecc.size = CONFIG_SYS_NAND_ECCSIZE;
nand->ecc.bytes = CONFIG_SYS_NAND_ECCBYTES;
+ nand->ecc.strength = 4;
nand->ecc.layout = &qi_lb60_ecclayout_2gb;
nand->chip_delay = 50;
nand->options = NAND_USE_FLASH_BBT;