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[U-Boot,v6,46/76] mtd: spi-nor: Add kconfig MTD_DATAFLASH_WRITE_VERIFY

Message ID 1455482955-19053-46-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State Superseded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_WRITE_VERIFY

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 | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig
index 15e8432..f039a9d 100644
--- a/drivers/mtd/spi-nor/Kconfig
+++ b/drivers/mtd/spi-nor/Kconfig
@@ -112,3 +112,13 @@  config MTD_DATAFLASH
 	  protocols during enumeration.
 
 	  If unsure, say N
+
+config MTD_DATAFLASH_WRITE_VERIFY
+	bool "Verify DataFlash page writes"
+	depends on MTD_DATAFLASH
+	help
+	  This adds an extra check when data is written to the flash.
+	  It may help if you are verifying chip setup (timings etc) on
+	  your board.  There is a rare possibility that even though the
+	  device thinks the write was successful, a bit could have been
+	  flipped accidentally due to device wear or something else.