drivers/mtd/spi/Kconfig

   1 menu "SPI Flash Support"
   2
   3 config DM_SPI_FLASH
   4         bool "Enable Driver Model for SPI flash"
   5         depends on DM && DM_SPI
   6         help
   7           Enable driver model for SPI flash. This SPI flash interface
   8           (spi_flash_probe(), spi_flash_write(), etc.) is then
   9           implemented by the SPI flash uclass. There is one standard
  10           SPI flash driver which knows how to probe most chips
  11           supported by U-Boot. The uclass interface is defined in
  12           include/spi_flash.h, but is currently fully compatible
  13           with the old interface to avoid confusion and duplication
  14           during the transition parent. SPI and SPI flash must be
  15           enabled together (it is not possible to use driver model
  16           for one and not the other).
  17
  18 config SPI_FLASH_SANDBOX
  19         bool "Support sandbox SPI flash device"
  20         depends on SANDBOX && DM_SPI_FLASH
  21         help
  22           Since sandbox cannot access real devices, an emulation mechanism is
  23           provided instead. Drivers can be connected up to the sandbox SPI
  24           bus (see CONFIG_SANDBOX_SPI) and SPI traffic will be routed to this
  25           device. Typically the contents of the emulated SPI flash device is
  26           stored in a file on the host filesystem.
  27
  28 config SPI_FLASH
  29         bool "Legacy SPI Flash Interface support"
  30         help
  31           Enable the legacy SPI flash support. This will include basic
  32           standard support for things like probing, read / write, and
  33           erasing through cmd_sf interface.
  34
  35           If unsure, say N
  36
  37 config SPI_FLASH_BAR
  38         bool "SPI flash Bank/Extended address register support"
  39         depends on SPI_FLASH
  40         help
  41           Enable the SPI flash Bank/Extended address register support.
  42           Bank/Extended address registers are used to access the flash
  43           which has size > 16MiB in 3-byte addressing.
  44
  45 config SPI_FLASH_DATAFLASH
  46         bool "AT45xxx DataFlash support"
  47         depends on SPI_FLASH && DM_SPI_FLASH
  48         help
  49           Enable the access for SPI-flash-based AT45xxx DataFlash chips.
  50           DataFlash is a kind of SPI flash. Most AT45 chips have two buffers
  51           in each chip, which may be used for double buffered I/O; but this
  52           driver doesn't (yet) use these for any kind of i/o overlap or prefetching.
  53
  54           Sometimes DataFlash is packaged in MMC-format cards, although the
  55           MMC stack can't (yet?) distinguish between MMC and DataFlash
  56           protocols during enumeration.
  57
  58           If unsure, say N
  59
  60 config SPI_FLASH_MTD
  61         bool "SPI Flash MTD support"
  62         depends on SPI_FLASH
  63         help
  64           Enable the MTD support for spi flash layer, this adapter is for
  65           translating mtd_read/mtd_write commands into spi_flash_read/write
  66           commands. It is not intended to use it within sf_cmd or the SPI
  67           flash subsystem. Such an adapter is needed for subsystems like
  68           UBI which can only operate on top of the MTD layer.
  69
  70           If unsure, say N
  71
  72 endmenu # menu "SPI Flash Support"