From 58794b3ebefea468bb1c57184b79df500f427927 Mon Sep 17 00:00:00 2001 From: Han Xu Date: Mon, 28 Mar 2016 11:26:51 -0500 Subject: MLK-12603: mtd: gpmi: may use legacy bch geometry in u-boot provide one config "CONFIG_NAND_MXS_BCH_LEGACY_GEO" to keep using legacy bch geometry. NOTICE: the feature must be enabled/disabled in both u-boot and kernel. Signed-off-by: Han Xu (cherry picked from commit 0abc9c182c24f88522bd74fa1b53cd2fa3477184) (cherry picked from commit 772af34b1216acc8e6a1a3faf43fef7c90b26a2f) Signed-off-by: Ye Li --- drivers/mtd/nand/mxs_nand.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/mtd/nand/mxs_nand.c') diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c index 1ffe4ce..22ba85e 100644 --- a/drivers/mtd/nand/mxs_nand.c +++ b/drivers/mtd/nand/mxs_nand.c @@ -254,6 +254,12 @@ static int mxs_nand_get_ecc_strength(struct mtd_info *mtd) } else { ecc_strength = chip->ecc_strength_ds; ecc_strength += ecc_strength & 1; +#if defined(CONFIG_NAND_MXS_BCH_LEGACY_GEO) + ecc_strength = ((page_oob_size - MXS_NAND_METADATA_SIZE) * 8) + /(galois_field * mxs_nand_ecc_chunk_cnt(mtd->writesize)); + ecc_strength += ecc_strength & 1; + ecc_strength = min(ecc_strength, MXS_NAND_MAX_ECC_STRENGTH); +#endif } return 0; }; -- cgit v1.1