Added kconfig entry for MTD_DATAFLASH
Cc: Bin Meng bmeng.cn@gmail.com Cc: Simon Glass sjg@chromium.org Cc: York Sun york.sun@nxp.com Cc: Haikun Wang haikun.wang@freescale.com Signed-off-by: Jagan Teki jteki@openedev.com --- drivers/mtd/spi-nor/Kconfig | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig index 219306f..15e8432 100644 --- a/drivers/mtd/spi-nor/Kconfig +++ b/drivers/mtd/spi-nor/Kconfig @@ -97,3 +97,18 @@ config SPI_FLASH_WINBOND Add support for various Winbond SPI flash chips (W25xxx)
endif # MTD_SPI_NOR + +config MTD_DATAFLASH + bool "AT45xxx DataFlash support" + depends on MTD + help + Enable the access for SPI-flash-based AT45xxx DataFlash chips. + DataFlash is a kind of SPI flash. Most AT45 chips have two buffers + in each chip, which may be used for double buffered I/O; but this + driver doesn't (yet) use these for any kind of i/o overlap or prefetching. + + Sometimes DataFlash is packaged in MMC-format cards, although the + MMC stack can't (yet?) distinguish between MMC and DataFlash + protocols during enumeration. + + If unsure, say N