\# # RTC class/drivers configuration # menu "Real Time Clock" config RTC_LIB tristate config RTC_CLASS tristate "RTC class" depends on EXPERIMENTAL default n select RTC_LIB help Generic RTC class support. If you say yes here, you will be allowed to plug one or more RTCs to your system. You will probably want to enable one of more of the interfaces below. This driver can also be built as a module. If so, the module will be called rtc-class. config RTC_HCTOSYS bool "Set system time from RTC on startup" depends on RTC_CLASS = y default y help If you say yes here, the system time will be set using the value read from the specified RTC device. This is useful in order to avoid unnecessary fschk runs. config RTC_HCTOSYS_DEVICE string "The RTC to read the time from" depends on RTC_HCTOSYS = y default "rtc0" help The RTC device that will be used as the source for the system time, usually rtc0. comment "RTC interfaces" depends on RTC_CLASS config RTC_INTF_SYSFS tristate "sysfs" depends on RTC_CLASS && SYSFS default RTC_CLASS help Say yes here if you want to use your RTC using the sysfs interface, /sys/class/rtc/rtcX . This driver can also be built as a module. If so, the module will be called rtc-sysfs. comment "RTC drivers" depends on RTC_CLASS endmenu