rtc: Ramtron FM3130 RTC support

Ramtron FM3130 is a chip with two separate devices inside, RTC clock and
FRAM.  This driver provides only RTC functionality.

This chip is met in lots of custom boards with AT91SAMXXXX CPU I work
with, is cheap and in no way better or worse than any other RTC on market.
 While it is mostly met on much smaller devices, I think it is great to
have it supported in Linux.

Signed-off-by: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 60f8afc7a56e..4949dc4859be 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -256,6 +256,17 @@ config RTC_DRV_S35390A
           This driver can also be built as a module. If so the module
           will be called rtc-s35390a.
 
+config RTC_DRV_FM3130
+        tristate "Ramtron FM3130"
+        help
+          If you say Y here you will get support for the
+          Ramtron FM3130 RTC chips.
+          Ramtron FM3130 is a chip with two separate devices inside,
+          RTC clock and FRAM. This driver provides only RTC functionality.
+
+          This driver can also be built as a module. If so the module
+          will be called rtc-fm3130.
+
 endif # I2C
 
 comment "SPI RTC drivers"