[PATCH] mtd: nand: raw: atmel: Use ONFI ECC params if available

[Zixun Li]

When ECC parameters are not specified in DT, first try ONFI ECC parameters
before fallback to maximum strength. To be inline with kernel driver behavior.

Signed-off-by: Zixun LI <zli at ogga.fr>
---
 drivers/mtd/nand/raw/atmel/nand-controller.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c
index 9873d11254..d29a9c6f10 100644
--- a/drivers/mtd/nand/raw/atmel/nand-controller.c
+++ b/drivers/mtd/nand/raw/atmel/nand-controller.c
@@ -1064,11 +1064,15 @@ static int atmel_nand_pmecc_init(struct nand_chip *chip)
 		req.ecc.strength = ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH;
 	else if (chip->ecc.strength)
 		req.ecc.strength = chip->ecc.strength;
+	else if(chip->ecc_strength_ds)
+		req.ecc.strength = chip->ecc_strength_ds;
 	else
 		req.ecc.strength = ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH;
 
 	if (chip->ecc.size)
 		req.ecc.sectorsize = chip->ecc.size;
+	else if(chip->ecc_step_ds)
+		req.ecc.sectorsize = chip->ecc_step_ds;
 	else
 		req.ecc.sectorsize = ATMEL_PMECC_SECTOR_SIZE_AUTO;
 
-- 
2.45.1