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| author | Josh Wu <josh.wu@atmel.com> | 2013-08-19 10:05:44 (GMT) |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2013-08-30 20:41:39 (GMT) |
| commit | 2fa831f9db1f1a13960f4ea0fd0454402717b453 (patch) | |
| tree | 97c4bbba2a72689cf85ff627f62c1f6b87640e4f /drivers/mtd/nand/mxc_nand.c | |
| parent | eedeac3ce94e2a3d4ff28974221b9f309358d8de (diff) | |
| download | linux-fsl-qoriq-2fa831f9db1f1a13960f4ea0fd0454402717b453.tar.xz | |
mtd: atmel_nand: pmecc: fix failure to correct bit error in 1024-bytes sector
The PMECC use BCH algorithm to correct error. In BCH algorithm, the primitive
polynomial value is GF(2^13) for 512-bytes sector size. And it is GF(2^14) for
1024-bytes sector size.
This patch will choose correct degree of the remainders (13 or 14) for
different sector size.
Tested in AT91SAM9X5-EK with MLC nand flash.
More detail can be found in ยง5.4.1 of:
AT91SAM ARM-based Embedded MPU Application Note
<http://www.atmel.com/Images/doc11127.pdf>
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/nand/mxc_nand.c')
0 files changed, 0 insertions, 0 deletions