mtd: rawnand: arasan: Support the hardware BCH ECC engine

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Add support for the hardware ECC BCH engine.

Please mind that this engine has an important limitation:
BCH implementation does not inform the user when an uncorrectable ECC
error occurs. To workaround this, we avoid using the hardware engine
in the read path and do the computation with the software BCH
implementation, which is faster than mixing hardware (for correction)
and software (for verification).

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://lore.kernel.org/linux-mtd/20200519074549.23673-9-miquel.raynal@bootlin.com

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Miquel Raynal 2020-05-19 09:45:49 +02:00

parent 197b88fecc

commit 88ffef1b65

2 changed files with 343 additions and 0 deletions

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1

drivers/mtd/nand/raw/Kconfig

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342

drivers/mtd/nand/raw/arasan-nand-controller.c

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