| Message ID | 1449054067-16751-2-git-send-email-boris.brezillon@free-electrons.com |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index fad634e..0203b15 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -160,6 +160,12 @@ typedef enum { /* Device supports subpage reads */ #define NAND_SUBPAGE_READ 0x00001000 +/* + * Some MLC NANDs need data scrambling to limit bitflips caused by repeated + * patterns. + */ +#define NAND_NEED_SCRAMBLING 0x00002000 + /* Options valid for Samsung large page devices */ #define NAND_SAMSUNG_LP_OPTIONS NAND_CACHEPRG
Some MLC NANDs are sensitive to repeated patterns and require data to be scrambled in order to limit the number of bitflips. Add a new flag to let the NAND controller know about this constraint. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> --- include/linux/mtd/nand.h | 6 ++++++ 1 file changed, 6 insertions(+)