From: Jagan Teki Date: Wed, 1 Jul 2015 15:52:19 +0000 (+0530) Subject: sf: Kconfig: Add SPI_FLASH_DATAFLASH entry X-Git-Tag: v2015.07~30^2~19 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=cd9accdcd9ab2f421047990ddae43f83cc43ca17;p=oweals%2Fu-boot.git sf: Kconfig: Add SPI_FLASH_DATAFLASH entry Added SPI_FLASH_DATAFLASH entry on Kconfig with help description. data flash driver comes with good decription, hence moved the same on to kconfig help decription. Signed-off-by: Jagan Teki Reviewed-by: Simon Glass Cc: Haikun Wang --- diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig index 80fe93ee21..a4160fd7ff 100644 --- a/drivers/mtd/spi/Kconfig +++ b/drivers/mtd/spi/Kconfig @@ -34,6 +34,21 @@ config SPI_FLASH If unsure, say N +config SPI_FLASH_DATAFLASH + bool "AT45xxx DataFlash support" + depends on SPI_FLASH && DM_SPI_FLASH + 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 + config SPI_FLASH_MTD bool "SPI Flash MTD support" depends on SPI_FLASH diff --git a/drivers/mtd/spi/sf_dataflash.c b/drivers/mtd/spi/sf_dataflash.c index d287db8b4c..3111f4fd12 100644 --- a/drivers/mtd/spi/sf_dataflash.c +++ b/drivers/mtd/spi/sf_dataflash.c @@ -19,16 +19,6 @@ #include "sf_internal.h" -/* - * 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. - */ - /* reads can bypass the buffers */ #define OP_READ_CONTINUOUS 0xE8 #define OP_READ_PAGE 0xD2