[PATCH v5 0/2] Add support for read retry

[Cheng Ming Lin]

From: Cheng Ming Lin <chengminglin at mxic.com.tw>

When the host ECC fails to correct the data error of NAND device,
there's a special read for data recovery method which can be setup
by the host for the next read. There are several retry levels that
can be attempted until the lost data is recovered or definitely
assumed lost.

For more detailed information, please refer to the link below:
Link: https://www.macronix.com/Lists/Datasheet/Attachments/9034/MX35LF1G24AD,%203V,%201Gb,%20v1.4.pdf

v5:
* rebase on nand/next

v4:
* If set_read_retry fails, it should back to read_retry level 0

v3:
* If set_read_retry fails, it should return an error

v2:
* Remove fixups
* Remove the function of init_read_retry

Cheng Ming Lin (2):
  mtd: spi-nand: Add read retry support
  mtd: spi-nand: macronix: Add support for read retry

 drivers/mtd/nand/spi/core.c     | 35 ++++++++++++++-
 drivers/mtd/nand/spi/macronix.c | 79 ++++++++++++++++++++++++++-------
 include/linux/mtd/spinand.h     | 15 +++++++
 3 files changed, 112 insertions(+), 17 deletions(-)

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2.25.1