# SPDX-License-Identifier: GPL-2.0-only
menuconfig MTD_SPI_NOR
	tristate "SPI NOR device support"
	depends on MTD
	depends on MTD && SPI_MASTER
	select SPI_MEM
	help
	  This is the framework for the SPI NOR which can be used by the SPI
	  device drivers and the SPI NOR device driver.

if MTD_SPI_NOR

config MTD_SPI_NOR_USE_VARIABLE_ERASE
	bool "Disable uniform_erase to allow use of all hardware supported erasesizes"
	depends on !MTD_SPI_NOR_USE_4K_SECTORS
	default n
	help
	  Allow mixed use of all hardware supported erasesizes,
	  by forcing spi_nor to use the multiple eraseregions code path.
	  For example: A 68K erase will use one 64K erase, and one 4K erase
	  on supporting hardware.

config MTD_SPI_NOR_USE_4K_SECTORS
	bool "Use small 4096 B erase sectors"
	default y
	help
	  Many flash memories support erasing small (4096 B) sectors. Depending
	  on the usage this feature may provide performance gain in comparison
	  to erasing whole blocks (32/64 KiB).
	  Changing a small part of the flash's contents is usually faster with
	  small sectors. On the other hand erasing should be faster when using
	  64 KiB block instead of 16 × 4 KiB sectors.

	  Please note that some tools/drivers/filesystems may not work with
	  4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).

config MTD_SPI_NOR_USE_4K_SECTORS_LIMIT
	int "Maximum flash chip size to use 4K sectors on (in KiB)"
	depends on MTD_SPI_NOR_USE_4K_SECTORS
	default "4096"
	help
	  There are many flash chips that support 4K sectors, but are so large
	  that using them significantly slows down writing large amounts of
	  data or using a writable filesystem.
	  Any flash chip larger than the size specified in this option will
	  not use 4K sectors.

source "drivers/mtd/spi-nor/controllers/Kconfig"

endif # MTD_SPI_NOR