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>
diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig
index f83876c..096338f 100644
--- a/drivers/mtd/spi/Kconfig
+++ b/drivers/mtd/spi/Kconfig
@@ -97,6 +97,13 @@
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 5d319e4..50460fe 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -3697,7 +3697,12 @@
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,