hwrng: cctrng - update help description

Improved the HW_RANDOM_CCTRNG help description.

Signed-off-by: Hadar Gat <hadar.gat@arm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index b98eb1c..ac00d78 100644 (file)
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -478,13 +478,14 @@ config HW_RANDOM_CCTRNG
        tristate "Arm CryptoCell True Random Number Generator support"
        depends on HAS_IOMEM && OF
        help
-         This driver provides support for the True Random Number
-         Generator available in Arm TrustZone CryptoCell.
-
-         To compile this driver as a module, choose M here: the module
+         Say 'Y' to enable the True Random Number Generator driver for the
+         Arm TrustZone CryptoCell family of processors.
+         Currently the CryptoCell 713 and 703 are supported.
+         The driver is supported only in SoC where Trusted Execution
+         Environment is not used.
+         Choose 'M' to compile this driver as a module. The module
          will be called cctrng.
-
-         If unsure, say Y.
+         If unsure, say 'N'.
 
 endif # HW_RANDOM