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 --- drivers/mtd/spi/Kconfig | 7 +++++++ drivers/mtd/spi/spi-nor-core.c | 7 ++++++- 2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig index 1b2ef37e92..9b7d195770 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" default n diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c index 72250a83d1..b4f1a6985c 100644 --- a/drivers/mtd/spi/spi-nor-core.c +++ b/drivers/mtd/spi/spi-nor-core.c @@ -3660,7 +3660,12 @@ 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,