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From ceef2075f3aa430da137e3629b0280a46d420ccd Mon Sep 17 00:00:00 2001
From: Huang Shijie <b32955@freescale.com>
Date: Fri, 17 May 2013 11:17:26 +0800
Subject: [PATCH 093/203] mtd: get the ECC info from the parameter page for
ONFI nand
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>
Reviewed-and-tested-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---
drivers/mtd/nand/nand_base.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2924,6 +2924,11 @@ static int nand_flash_detect_onfi(struct
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;
}
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