\## 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_PCF8563	tristate "Philips PCF8563/Epson RTC8564"	depends on RTC_CLASS && I2C	help	  If you say yes here you get support for the	  Philips PCF8563 RTC chip. The Epson RTC8564	  should work as well. 	  This driver can also be built as a module. If so, the module	  will be called rtc-pcf8563. config RTC_DRV_RS5C372	tristate "Ricoh RS5C372A/B"	depends on RTC_CLASS && I2C	help	  If you say yes here you get support for the	  Ricoh RS5C372A and RS5C372B RTC chips. 	  This driver can also be built as a module. If so, the module	  will be called rtc-rs5c372. config RTC_DRV_M48T86	tristate "ST M48T86/Dallas DS12887"	depends on RTC_CLASS	help	  If you say Y here you will get support for the	  ST M48T86 and Dallas DS12887 RTC chips. 	  This driver can also be built as a module. If so, the module	  will be called rtc-m48t86. config RTC_DRV_EP93XX	tristate "Cirrus Logic EP93XX"	depends on RTC_CLASS && ARCH_EP93XX	help	  If you say yes here you get support for the	  RTC embedded in the Cirrus Logic EP93XX processors. 	  This driver can also be built as a module. If so, the module	  will be called rtc-ep93xx. config RTC_DRV_SA1100	tristate "SA11x0/PXA2xx"	depends on RTC_CLASS && (ARCH_SA1100 || ARCH_PXA)	help	  If you say Y here you will get access to the real time clock	  built into your SA11x0 or PXA2xx CPU. 	  To compile this driver as a module, choose M here: the	  module will be called rtc-sa1100. config RTC_DRV_VR41XX	tristate "NEC VR41XX"	depends on RTC_CLASS && CPU_VR41XX	help	  If you say Y here you will get access to the real time clock	  built into your NEC VR41XX CPU. 	  To compile this driver as a module, choose M here: the	  module will be called rtc-vr41xx. 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