1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
index 9c613f06623c..88f4df047464 100644
--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -59,6 +59,17 @@ config MTD_DATAFLASH
           Sometimes DataFlash chips are packaged inside MMC-format
           cards; at this writing, the MMC stack won't handle those.
 
+config MTD_DATAFLASH_OTP
+        bool "DataFlash OTP support (Security Register)"
+        depends on MTD_DATAFLASH
+        select HAVE_MTD_OTP
+        help
+          Newer DataFlash chips (revisions C and D) support 128 bytes of
+          one-time-programmable (OTP) data.  The first half may be written
+          (once) with up to 64 bytes of data, such as a serial number or
+          other key product data.  The second half is programmed with a
+          unique-to-each-chip bit pattern at the factory.
+
 config MTD_M25P80
         tristate "Support most SPI Flash chips (AT26DF, M25P, W25X, ...)"
         depends on SPI_MASTER && EXPERIMENTAL