rtc: add Dallas DS1390/93/94 RTC chips

Add support for the Dallas DS1390/93/94 SPI RTC chip.

Signed-off-by: Mark Jackson <mpfj@mimc.co.uk>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
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 990020c1dae9..123092d8a984 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -310,6 +310,17 @@ config RTC_DRV_DS1305
           This driver can also be built as a module. If so, the module
           will be called rtc-ds1305.
 
+config RTC_DRV_DS1390
+        tristate "Dallas/Maxim DS1390/93/94"
+        help
+          If you say yes here you get support for the DS1390/93/94 chips.
+
+          This driver only supports the RTC feature, and not other chip
+          features such as alarms and trickle charging.
+
+          This driver can also be built as a module. If so, the module
+          will be called rtc-ds1390.
+
 config RTC_DRV_MAX6902
         tristate "Maxim MAX6902"
         help