Patchwork [v6,02/10] mtd: get the ECC info from the parameter page for ONFI nand

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Submitter Huang Shijie
Date May 17, 2013, 3:17 a.m.
Message ID <1368760654-28754-3-git-send-email-b32955@freescale.com>
Download mbox | patch
Permalink /patch/244481/
State Accepted
Commit 10c86babfb21a07272495a968114f677313bea51
Headers show

Comments

Huang Shijie - May 17, 2013, 3:17 a.m.
From the ONFI spec, we can just get the ECC info from the @ecc_bits field of
the parameter page.

Signed-off-by: Huang Shijie <b32955@freescale.com>
---
 drivers/mtd/nand/nand_base.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

Patch

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index edc7663..b63b731 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2900,6 +2900,11 @@  static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
 	if (le16_to_cpu(p->features) & 1)
 		*busw = NAND_BUSWIDTH_16;
 
+	if (p->ecc_bits != 0xff) {
+		chip->ecc_strength_ds = p->ecc_bits;
+		chip->ecc_step_ds = 512;
+	}
+
 	pr_info("ONFI flash detected\n");
 	return 1;
 }