memory: samsung: exynos-srom: Describe the Kconfig entry

Write short description about the Exynos SROM controller driver.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

diff --git a/drivers/memory/samsung/Kconfig b/drivers/memory/samsung/Kconfig
index 20a8406ce78616dcc76aa7df2a7d475b232396e9..8e240f078afc08311ac0e8a1d56e37bf9e061864 100644 (file)
--- a/drivers/memory/samsung/Kconfig
+++ b/drivers/memory/samsung/Kconfig
@@ -23,5 +23,12 @@ config EXYNOS5422_DMC
 config EXYNOS_SROM
        bool "Exynos SROM controller driver" if COMPILE_TEST
        depends on (ARM && ARCH_EXYNOS) || (COMPILE_TEST && HAS_IOMEM)
+       help
+         This adds driver for Samsung Exynos SoC SROM controller.  The driver
+         in basic operation mode only saves and restores SROM registers
+         during suspend.  If however appropriate device tree configuration
+         is provided, the driver enables support for external memory
+         or external devices.
+         If unsure, say Y on devices with Samsung Exynos SocS.
 
 endif