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mtd: Add support for emulated SLC mode on MLC NANDs

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MLC NANDs can be made a bit more reliable if we only program the lower
page of each pair. At least, this solves the paired-pages corruption
issue.

Signed-off-by: Boris Brezillon <bbrezillon@kernel.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200503155341.16712-5-miquel.raynal@bootlin.com
This commit is contained in:
Boris Brezillon
2020-05-03 17:53:37 +02:00
committed by Miquel Raynal
parent d652f3a5bd
commit 9e3307a169
5 changed files with 213 additions and 40 deletions
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2
include/linux/mtd/partitions.h
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@@ -37,6 +37,7 @@
* master MTD flag set for the corresponding MTD partition.
* For example, to force a read-only partition, simply adding
* MTD_WRITEABLE to the mask_flags will do the trick.
* add_flags: contains flags to add to the parent flags
*
* Note: writeable partitions require their size and offset be
* erasesize aligned (e.g. use MTDPART_OFS_NEXTBLK).
@@ -48,6 +49,7 @@ struct mtd_partition {
uint64_t size; /* partition size */
uint64_t offset; /* offset within the master MTD space */
uint32_t mask_flags; /* master MTD flags to mask out for this partition */
uint32_t add_flags; /* flags to add to the partition */
struct device_node *of_node;
};