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authorMiquel Raynal <miquel.raynal@bootlin.com>2020-05-19 10:45:49 +0300
committerMiquel Raynal <miquel.raynal@bootlin.com>2020-05-26 22:37:25 +0300
commit88ffef1b65cf989b2dfea6374caff804fca6ec32 (patch)
tree8b858e248bc883e44e0e0e97ca93ed0e93b6b5f9 /drivers/mtd/nand/raw/Kconfig
parent197b88fecc50ee3c7a22415db81eae0b9126f20e (diff)
downloadlinux-88ffef1b65cf989b2dfea6374caff804fca6ec32.tar.xz
mtd: rawnand: arasan: Support the hardware BCH ECC engine
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
Diffstat (limited to 'drivers/mtd/nand/raw/Kconfig')
-rw-r--r--drivers/mtd/nand/raw/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index e2bc87779bf9..113f61052269 100644
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -456,6 +456,7 @@ config MTD_NAND_CADENCE
config MTD_NAND_ARASAN
tristate "Support for Arasan NAND flash controller"
depends on HAS_IOMEM && HAS_DMA
+ select BCH
help
Enables the driver for the Arasan NAND flash controller on
Zynq Ultrascale+ MPSoC.