nanddev_get_ecc_nsteps
chip->ecc.steps = nanddev_get_ecc_nsteps(base);
chip->ecc.bytes = base->ecc.ctx.total / nanddev_get_ecc_nsteps(base);
chip->ecc.steps = nanddev_get_ecc_nsteps(base);
chip->ecc.bytes = base->ecc.ctx.total / nanddev_get_ecc_nsteps(base);
unsigned int nsteps = nanddev_get_ecc_nsteps(nand);
unsigned int nsteps = nanddev_get_ecc_nsteps(nand);