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From: Raphael Poggi <poggi.raph@gmail.com>
To: barebox@lists.infradead.org
Cc: Raphael Poggi <poggi.raph@gmail.com>
Subject: [PATCH 2/3 v2] mtd: atmel_nand: fix bit error correction
Date: Thu, 17 Jul 2014 14:12:20 +0200	[thread overview]
Message-ID: <1405599141-5992-3-git-send-email-poggi.raph@gmail.com> (raw)
In-Reply-To: <1405599141-5992-1-git-send-email-poggi.raph@gmail.com>

When pmecc uses a 1024 sector size to correct bit error, the gf dimension
must be 14.

So this commit chooses the right degree for different sector size (512 or 1024).

Signed-off-by: Raphaël Poggi <poggi.raph@gmail.com>
---
 drivers/mtd/nand/atmel_nand.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index a02f38f..1ce7d4d 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -796,7 +796,8 @@ static int __init atmel_pmecc_nand_init_params(struct device_d *dev,
 	switch (mtd->writesize) {
 	case 2048:
 	case 4096:
-		host->pmecc_degree = PMECC_GF_DIMENSION_13;
+		host->pmecc_degree = (sector_size == 512) ?
+					PMECC_GF_DIMENSION_13 : PMECC_GF_DIMENSION_14;
 		host->pmecc_cw_len = (1 << host->pmecc_degree) - 1;
 		host->pmecc_sector_number = mtd->writesize / sector_size;
 		host->pmecc_bytes_per_sector = pmecc_get_ecc_bytes(
-- 
1.7.9.5


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  parent reply	other threads:[~2014-07-17 12:12 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-17 12:12 [PATCH 0/3 v2] mtd: atmel_nand: add support for 8k page nand Raphael Poggi
2014-07-17 12:12 ` [PATCH 1/3 v2] mtd: atmel_nand: increase chip_delay Raphael Poggi
2014-07-17 12:12 ` Raphael Poggi [this message]
2014-07-17 12:12 ` [PATCH 3/3 v2] mtd: atmel_nand: enable PMECC for 8k page nand Raphael Poggi
2014-07-18  5:35 ` [PATCH 0/3 v2] mtd: atmel_nand: add support " Sascha Hauer

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