aboutsummaryrefslogtreecommitdiff
path: root/drivers/rtc/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/rtc/Kconfig')
-rw-r--r--drivers/rtc/Kconfig25
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 09660e2ab05..4bbca500d3d 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -1,4 +1,4 @@
-\#
+#
# RTC class/drivers configuration
#
@@ -95,6 +95,29 @@ config RTC_INTF_DEV_UIE_EMUL
comment "RTC drivers"
depends on RTC_CLASS
+# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
+# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
+# global rtc_lock ... it's not yet just another platform_device.
+
+config RTC_DRV_CMOS
+ tristate "PC-style 'CMOS' real time clock"
+ depends on RTC_CLASS && (X86_PC || ALPHA || ARM26 || ARM \
+ || M32R || ATARI || POWERPC)
+ help
+ Say "yes" here to get direct support for the real time clock
+ found in every PC or ACPI-based system, and some other boards.
+ Specifically the original MC146818, compatibles like those in
+ PC south bridges, the DS12887 or M48T86, some multifunction
+ or LPC bus chips, and so on.
+
+ Your system will need to define the platform device used by
+ this driver, otherwise it won't be accessible. This means
+ you can safely enable this driver if you don't know whether
+ or not your board has this kind of hardware.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-cmos.
+
config RTC_DRV_X1205
tristate "Xicor/Intersil X1205"
depends on RTC_CLASS && I2C