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| author | Jagan Teki <jteki@openedev.com> | 2015-07-01 21:22:19 +0530 |
|---|---|---|
| committer | Jagan Teki <jteki@openedev.com> | 2015-07-01 21:22:19 +0530 |
| commit | cd9accdcd9ab2f421047990ddae43f83cc43ca17 (patch) | |
| tree | e5ebdadc83ce5b1b0b9a4492bfbd6420171362dd /drivers/mtd | |
| parent | 7678dd93ec270d623ee05230004f42226f03c052 (diff) | |
| download | u-boot-imx-cd9accdcd9ab2f421047990ddae43f83cc43ca17.zip u-boot-imx-cd9accdcd9ab2f421047990ddae43f83cc43ca17.tar.gz u-boot-imx-cd9accdcd9ab2f421047990ddae43f83cc43ca17.tar.bz2 | |
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 <jteki@openedev.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Haikun Wang <haikun.wang@freescale.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi/Kconfig | 15 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_dataflash.c | 10 |
2 files changed, 15 insertions, 10 deletions
diff --git a/drivers/mtd/spi/Kconfig b/drivers/mtd/spi/Kconfig index 80fe93e..a4160fd 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 d287db8..3111f4f 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 |