diff options
| author | JaimeLiao | 2022-07-04 14:12:40 +0800 |
|---|---|---|
| committer | Jagan Teki | 2022-07-18 19:15:19 +0530 |
| commit | 68ad73b70c7c8f792a2f3a75da49dee343051bf8 (patch) | |
| tree | 42360dc9569dfc5a111a88ca6dbae16adec5d1ab | |
| parent | df3d5f9e410cb7a4936fd8d78b9f7f751b7e130a (diff) | |
mtd: spi-nor-core: Adding different type of command extension in Soft Reset
Power-on-Reset is a method to restore flash back to 1S-1S-1S mode from 8D-8D-8D
in the begging of probe.
Command extension type is not standardized across flash vendors in DTR mode.
For suiting different vendor flash devices, adding a flag to seperate types for
soft reset on boot.
Signed-off-by: JaimeLiao <jaimeliao.tw@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
| -rw-r--r-- | drivers/mtd/spi/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/mtd/spi/spi-nor-core.c | 7 |
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig index f83876c5761..096338f27bf 100644 --- a/drivers/mtd/spi/Kconfig +++ b/drivers/mtd/spi/Kconfig @@ -97,6 +97,13 @@ config SPI_FLASH_SMART_HWCAPS can support a type of operation in a much more refined way compared to using flags like SPI_RX_DUAL, SPI_TX_QUAD, etc. +config SPI_NOR_BOOT_SOFT_RESET_EXT_INVERT + bool "Command extension type is INVERT for Software Reset on boot" + default n + help + Because of SFDP information can not be get before boot. + So define command extension type is INVERT when Software Reset on boot only. + config SPI_FLASH_SOFT_RESET bool "Software Reset support for SPI NOR flashes" help diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c index 5d319e4c0f7..50460feaf8e 100644 --- a/drivers/mtd/spi/spi-nor-core.c +++ b/drivers/mtd/spi/spi-nor-core.c @@ -3697,7 +3697,12 @@ static int spi_nor_soft_reset(struct spi_nor *nor) enum spi_nor_cmd_ext ext; ext = nor->cmd_ext_type; - nor->cmd_ext_type = SPI_NOR_EXT_REPEAT; + if (nor->cmd_ext_type == SPI_NOR_EXT_NONE) { + nor->cmd_ext_type = SPI_NOR_EXT_REPEAT; +#if CONFIG_IS_ENABLED(SPI_NOR_BOOT_SOFT_RESET_EXT_INVERT) + nor->cmd_ext_type = SPI_NOR_EXT_INVERT; +#endif /* SPI_NOR_BOOT_SOFT_RESET_EXT_INVERT */ + } op = (struct spi_mem_op)SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_SRSTEN, 0), SPI_MEM_OP_NO_DUMMY, |