diff options
| author | Peng Fan | 2015-09-07 16:12:11 +0800 |
|---|---|---|
| committer | Stefano Babic | 2015-09-20 09:59:54 +0200 |
| commit | 168617c9b547c4b1b24e7b4ce7078aa35a99efd2 (patch) | |
| tree | 1ca9acc81b858cf1dc79adda25c473ad01dad40e | |
| parent | 8e4ba5e0ff02fb7932cb4d9971f88c9a35a31902 (diff) | |
mtd: nand: mxs check maximum ecc that platfrom supports
Check maximum ecc strength for each platfrom to avoid the calculated ecc
exceed the limitation.
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Signed-off-by: Han Xu <b45815@freescale.com>
Tested-By: Tim Harvey <tharvey at gateworks.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Scott Wood <scottwood@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
| -rw-r--r-- | drivers/mtd/nand/mxs_nand.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c index 1d689015a5a..f15cf36c88e 100644 --- a/drivers/mtd/nand/mxs_nand.c +++ b/drivers/mtd/nand/mxs_nand.c @@ -149,6 +149,13 @@ static inline uint32_t mxs_nand_get_ecc_strength(uint32_t page_data_size, uint32_t page_oob_size) { int ecc_strength; + int max_ecc_strength_supported; + + /* Refer to Chapter 17 for i.MX6DQ, Chapter 18 for i.MX6SX */ + if (is_cpu_type(MXC_CPU_MX6SX)) + max_ecc_strength_supported = 62; + else + max_ecc_strength_supported = 40; /* * Determine the ECC layout with the formula: @@ -162,7 +169,7 @@ static inline uint32_t mxs_nand_get_ecc_strength(uint32_t page_data_size, / (galois_field * mxs_nand_ecc_chunk_cnt(page_data_size)); - return round_down(ecc_strength, 2); + return min(round_down(ecc_strength, 2), max_ecc_strength_supported); } static inline uint32_t mxs_nand_get_mark_offset(uint32_t page_data_size, |