diff options
| author | Takahiro Kuwano <[email protected]> | 2025-09-30 03:20:59 +0300 |
|---|---|---|
| committer | Michael Trimarchi <[email protected]> | 2025-10-05 20:26:13 +0200 |
| commit | 042a78d9bb0c4ca2c0659f0a860a97491402aeeb (patch) | |
| tree | f55aa4be25bb4689ad77d26462b790e349aeff8c /include/linux | |
| parent | 4d135d8a8540036a32983ff25e15810e00ae5938 (diff) | |
mtd: spinand: Introduce a way to avoid raw access
SkyHigh spinand device has ECC enable bit in configuration register but
it must be always enabled. If ECC is disabled, read and write ops
results in undetermined state. For such devices, a way to avoid raw
access is needed.
Introduce SPINAND_NO_RAW_ACCESS flag to advertise the device does not
support raw access. In such devices, the on-die ECC engine ops returns
error to I/O request in raw mode.
Checking and marking BBM need to be cared as special case, by adding
fallback mechanism that tries read/write OOB with ECC enabled.
This is a port of linux commit
6d9d6ab3a82a (mtd: spinand: Introduce a way to avoid raw access)
Signed-off-by: Takahiro Kuwano <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Signed-off-by: Mikhail Kshevetskiy <[email protected]> # U-Boot port
Reviewed-by: Frieder Schrempf <[email protected]>
Signed-off-by: Michael Trimarchi <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mtd/spinand.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index fb3a2e5d909..63626c9c27c 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -320,6 +320,7 @@ struct spinand_ecc_info { #define SPINAND_HAS_CR_FEAT_BIT BIT(1) #define SPINAND_HAS_PROG_PLANE_SELECT_BIT BIT(2) #define SPINAND_HAS_READ_PLANE_SELECT_BIT BIT(3) +#define SPINAND_NO_RAW_ACCESS BIT(4) /** * struct spinand_info - Structure used to describe SPI NAND chips |