\# # 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. config RTC_INTF_PROC tristate "proc" depends on RTC_CLASS && PROC_FS default RTC_CLASS help Say yes here if you want to use your RTC using the proc interface, /proc/driver/rtc . This driver can also be built as a module. If so, the module will be called rtc-proc. config RTC_INTF_DEV tristate "dev" depends on RTC_CLASS default RTC_CLASS help Say yes here if you want to use your RTC using the dev interface, /dev/rtc . This driver can also be built as a module. If so, the module will be called rtc-dev. comment "RTC drivers" depends on RTC_CLASS config RTC_DRV_X1205 tristate "Xicor/Intersil X1205" depends on RTC_CLASS && I2C help If you say yes here you get support for the Xicor/Intersil X1205 RTC chip. This driver can also be built as a module. If so, the module will be called rtc-x1205. config RTC_DRV_DS1672 tristate "Dallas/Maxim DS1672" depends on RTC_CLASS && I2C help If you say yes here you get support for the Dallas/Maxim DS1672 timekeeping chip. This driver can also be built as a module. If so, the module will be called rtc-ds1672. config RTC_DRV_TEST tristate "Test driver/device" depends on RTC_CLASS help If you say yes here you get support for the RTC test driver. It's a software RTC which can be used to test the RTC subsystem APIs. It gets the time from the system clock. You want this driver only if you are doing development on the RTC subsystem. Please read the source code for further details. This driver can also be built as a module. If so, the module will be called rtc-test. endmenu