drivers: flash: Add generic NOR flash driver for MSPI devices

Add a flash driver intended to handle various flash devices
connected over MSPI bus as long as they support JEDEC SFDP.
This is an initial commit providing only basic operations
in Octal I/O mode with some hard-coded values for Macronix
MX25Ux series chips.

Signed-off-by: Andrzej Głąbek <[email protected]>

Author: anangl

drivers/flash/CMakeLists.txt

@@ -34,6 +34,7 @@ zephyr_library_sources_ifdef(CONFIG_FLASH_MCUX_FLEXSPI_MX25UM51345G flash_mcux_f
 zephyr_library_sources_ifdef(CONFIG_FLASH_MCUX_FLEXSPI_NOR flash_mcux_flexspi_nor.c)
 zephyr_library_sources_ifdef(CONFIG_FLASH_MSPI_ATXP032 flash_mspi_atxp032.c)
 zephyr_library_sources_ifdef(CONFIG_FLASH_MSPI_EMUL_DEVICE flash_mspi_emul_device.c)
+zephyr_library_sources_ifdef(CONFIG_FLASH_MSPI_NOR flash_mspi_nor.c)
 zephyr_library_sources_ifdef(CONFIG_FLASH_NPCX_FIU_NOR flash_npcx_fiu_nor.c)
 zephyr_library_sources_ifdef(CONFIG_FLASH_NPCX_FIU_QSPI flash_npcx_fiu_qspi.c)
 zephyr_library_sources_ifdef(CONFIG_FLASH_RPI_PICO flash_rpi_pico.c)

drivers/flash/Kconfig.mspi

@@ -28,4 +28,27 @@ config FLASH_MSPI_ATXP032
 	select FLASH_JESD216
 	select MSPI_AMBIQ_AP3 if SOC_SERIES_APOLLO3X
 
+menuconfig FLASH_MSPI_NOR
+	bool "Generic MSPI NOR Flash"
+	default y
+	depends on DT_HAS_JEDEC_MSPI_NOR_ENABLED
+	select FLASH_MSPI
+	select FLASH_HAS_EXPLICIT_ERASE
+	select FLASH_JESD216
+	select GPIO if $(dt_compat_any_has_prop,$(DT_COMPAT_JEDEC_MSPI_NOR),reset-gpios)
+
+if FLASH_MSPI_NOR
+
+config FLASH_MSPI_NOR_LAYOUT_PAGE_SIZE
+	int "Page size to use for FLASH_LAYOUT feature"
+	depends on FLASH_PAGE_LAYOUT
+	default 65536
+	help
+	  When CONFIG_FLASH_PAGE_LAYOUT is used, this driver will support that
+	  API. By default the page size corresponds to the block size (65536).
+	  Other options include the 32K-byte erase size (32768), the sector
+	  size (4096), or any non-zero multiple of the sector size.
+
+endif # FLASH_MSPI_NOR
+
 endmenu