diff options
| author | Pratyush Yadav <p.yadav@ti.com> | 2020-10-05 18:31:35 +0300 |
|---|---|---|
| committer | Vignesh Raghavendra <vigneshr@ti.com> | 2020-11-09 09:26:17 +0300 |
| commit | d73ee7534cc537b98b61bfd83dbce5bb12aecb80 (patch) | |
| tree | 09efa7e59d3bb003317b9762ab8645010b9dd623 /include/linux/mtd | |
| parent | 1131324aa53ad3465a36c4e58a56615e1bf52932 (diff) | |
| download | linux-d73ee7534cc537b98b61bfd83dbce5bb12aecb80.tar.xz | |
mtd: spi-nor: core: perform a Soft Reset on shutdown
Perform a Soft Reset on shutdown on flashes that support it so that the
flash can be reset to its initial state and any configurations made by
spi-nor (given that they're only done in volatile registers) will be
reset. This will hand back the flash in pristine state for any further
operations on it.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-13-p.yadav@ti.com
Diffstat (limited to 'include/linux/mtd')
| -rw-r--r-- | include/linux/mtd/spi-nor.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index cd549042c53d..299685d15dc2 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -51,6 +51,8 @@ #define SPINOR_OP_CLFSR 0x50 /* Clear flag status register */ #define SPINOR_OP_RDEAR 0xc8 /* Read Extended Address Register */ #define SPINOR_OP_WREAR 0xc5 /* Write Extended Address Register */ +#define SPINOR_OP_SRSTEN 0x66 /* Software Reset Enable */ +#define SPINOR_OP_SRST 0x99 /* Software Reset */ /* 4-byte address opcodes - used on Spansion and some Macronix flashes. */ #define SPINOR_OP_READ_4B 0x13 /* Read data bytes (low frequency) */ |