diff options
| -rw-r--r-- | drivers/mtd/spi-nor/core.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index bd2c7717eb10..f6a6ef2d8bd8 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -2839,6 +2839,21 @@ static int spi_nor_init(struct spi_nor *nor) return 0; } +/** + * spi_nor_soft_reset() - Perform a software reset + * @nor: pointer to 'struct spi_nor' + * + * Performs a "Soft Reset and Enter Default Protocol Mode" sequence which resets + * the device to its power-on-reset state. This is useful when the software has + * made some changes to device (volatile) registers and needs to reset it before + * shutting down, for example. + * + * Not every flash supports this sequence. The same set of opcodes might be used + * for some other operation on a flash that does not support this. Support for + * this sequence can be discovered via SFDP in the BFPT table. + * + * Return: 0 on success, -errno otherwise. + */ static void spi_nor_soft_reset(struct spi_nor *nor) { struct spi_mem_op op; |