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[U-Boot,v6,44/76] mtd: spi-nor: Add Kconfig entry for mtd_dataflash

Message ID 1455482955-19053-44-git-send-email-jteki@openedev.com
State Superseded
Delegated to: Jagannadha Sutradharudu Teki
Headers show

Commit Message

Jagan Teki Feb. 14, 2016, 8:48 p.m. UTC 
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(+)
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Patch

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