if RTC_CLASS
+if GEN_RTC || RTC
+comment "Conflicting RTC option has been selected, check GEN_RTC and RTC"
+endif
+
config RTC_HCTOSYS
bool "Set system time from RTC on startup and resume"
depends on RTC_CLASS = y
help
The RTC device that will be used to (re)initialize the system
clock, usually rtc0. Initialization is done when the system
- starts up, and when it resumes from a low power state.
+ starts up, and when it resumes from a low power state. This
+ device should record time in UTC, since the kernel won't do
+ timezone correction.
The driver for this RTC device must be loaded before late_initcall
functions run, so it must usually be statically linked.
If the clock you specify here is not battery backed, it may still
be useful to reinitialize system time when resuming from system
- sleep states. Do not specify an RTC here unless it stays powered
+ sleep states. Do not specify an RTC here unless it stays powered
during all this system's supported sleep states.
config RTC_DEBUG
The first seven registers on these chips hold an RTC, and other
registers may add features such as NVRAM, a trickle charger for
- the RTC/NVRAM backup power, and alarms. This driver may not
- expose all those available chip features.
+ the RTC/NVRAM backup power, and alarms. NVRAM is visible in
+ sysfs, but other chip features may not be available.
This driver can also be built as a module. If so, the module
will be called rtc-ds1307.
config RTC_DRV_DS1374
- tristate "Maxim/Dallas Semiconductor DS1374 Real Time Clock"
+ tristate "Dallas/Maxim DS1374"
depends on RTC_CLASS && I2C
help
If you say yes here you get support for Dallas Semiconductor
will be called rtc-ds1672.
config RTC_DRV_MAX6900
- tristate "Maxim 6900"
+ tristate "Maxim MAX6900"
help
If you say yes here you will get support for the
Maxim MAX6900 I2C RTC chip.
will be called rtc-rs5c372.
config RTC_DRV_ISL1208
- tristate "Intersil 1208"
+ tristate "Intersil ISL1208"
help
If you say yes here you get support for the
- Intersil 1208 RTC chip.
+ Intersil ISL1208 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-isl1208.
will be called rtc-pcf8583.
config RTC_DRV_M41T80
- tristate "ST M41T80 series RTC"
+ tristate "ST M41T80/81/82/83/84/85/87"
help
If you say Y here you will get support for the
ST M41T80 RTC chips series. Currently following chips are
depends on MENELAUS
help
If you say yes here you get support for the RTC on the
- TWL92330 "Menelaus" power mangement chip, used with OMAP2
+ TWL92330 "Menelaus" power management chip, used with OMAP2
platforms. The support is integrated with the rest of
the Menelaus driver; it's not separate module.
if SPI_MASTER
-config RTC_DRV_RS5C348
- tristate "Ricoh RS5C348A/B"
+config RTC_DRV_MAX6902
+ tristate "Maxim MAX6902"
help
- If you say yes here you get support for the
- Ricoh RS5C348A and RS5C348B RTC chips.
+ If you say yes here you will get support for the
+ Maxim MAX6902 SPI RTC chip.
This driver can also be built as a module. If so, the module
- will be called rtc-rs5c348.
+ will be called rtc-max6902.
-config RTC_DRV_MAX6902
- tristate "Maxim 6902"
+config RTC_DRV_R9701
+ tristate "Epson RTC-9701JE"
help
If you say yes here you will get support for the
- Maxim MAX6902 SPI RTC chip.
+ Epson RTC-9701JE SPI RTC chip.
This driver can also be built as a module. If so, the module
- will be called rtc-max6902.
+ will be called rtc-r9701.
+
+config RTC_DRV_RS5C348
+ tristate "Ricoh RS5C348A/B"
+ help
+ If you say yes here you get support for the
+ Ricoh RS5C348A and RS5C348B RTC chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-rs5c348.
endif # SPI_MASTER
help
If you say yes here you get support for the Dallas DS1216 RTC chips.
-config RTC_DRV_DS1553
- tristate "Dallas DS1553"
+config RTC_DRV_DS1302
+ tristate "Dallas DS1302"
+ depends on SH_SECUREEDGE5410
+ help
+ If you say yes here you get support for the Dallas DS1302 RTC chips.
+
+config RTC_DRV_DS1511
+ tristate "Dallas DS1511"
+ depends on RTC_CLASS
help
If you say yes here you get support for the
- Dallas DS1553 timekeeping chip.
+ Dallas DS1511 timekeeping/watchdog chip.
This driver can also be built as a module. If so, the module
- will be called rtc-ds1553.
+ will be called rtc-ds1511.
-config RTC_DRV_STK17TA8
- tristate "Simtek STK17TA8"
- depends on RTC_CLASS
+config RTC_DRV_DS1553
+ tristate "Maxim/Dallas DS1553"
help
If you say yes here you get support for the
- Simtek STK17TA8 timekeeping chip.
+ Maxim/Dallas DS1553 timekeeping chip.
This driver can also be built as a module. If so, the module
- will be called rtc-stk17ta8.
+ will be called rtc-ds1553.
config RTC_DRV_DS1742
- tristate "Dallas DS1742/1743"
+ tristate "Maxim/Dallas DS1742/1743"
help
If you say yes here you get support for the
- Dallas DS1742/1743 timekeeping chip.
+ Maxim/Dallas DS1742/1743 timekeeping chip.
This driver can also be built as a module. If so, the module
will be called rtc-ds1742.
+config RTC_DRV_STK17TA8
+ tristate "Simtek STK17TA8"
+ depends on RTC_CLASS
+ help
+ If you say yes here you get support for the
+ Simtek STK17TA8 timekeeping chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-stk17ta8.
+
config RTC_DRV_M48T86
tristate "ST M48T86/Dallas DS12887"
help
config RTC_DRV_SH
tristate "SuperH On-Chip RTC"
- depends on RTC_CLASS && (CPU_SH3 || CPU_SH4)
+ depends on RTC_CLASS && SUPERH
help
Say Y here to enable support for the on-chip RTC found in
most SuperH processors.
AT32AP700x family processors.
config RTC_DRV_AT91RM9200
- tristate "AT91RM9200"
- depends on ARCH_AT91RM9200
- help
- Driver for the Atmel AT91RM9200's internal RTC (Realtime Clock).
+ tristate "AT91RM9200 or AT91SAM9RL"
+ depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL
+ help
+ Driver for the internal RTC (Realtime Clock) module found on
+ Atmel AT91RM9200's and AT91SAM9RL chips. On SAM9RL chips
+ this is powered by the backup power supply.
+
+config RTC_DRV_AT91SAM9
+ tristate "AT91SAM9x"
+ depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
+ help
+ RTC driver for the Atmel AT91SAM9x internal RTT (Real Time Timer).
+ These timers are powered by the backup power supply (such as a
+ small coin cell battery), but do not need to be used as RTCs.
+
+ (On AT91SAM9rl chips you probably want to use the dedicated RTC
+ module and leave the RTT available for other uses.)
+
+config RTC_DRV_AT91SAM9_RTT
+ int
+ range 0 1
+ default 0
+ prompt "RTT module Number" if ARCH_AT91SAM9263
+ depends on RTC_DRV_AT91SAM9
+ help
+ More than one RTT module is available. You can choose which
+ one will be used as an RTC. The default of zero is normally
+ OK to use, though some systems use that for non-RTC purposes.
+
+config RTC_DRV_AT91SAM9_GPBR
+ int
+ range 0 3 if !ARCH_AT91SAM9263
+ range 0 15 if ARCH_AT91SAM9263
+ default 0
+ prompt "Backup Register Number"
+ depends on RTC_DRV_AT91SAM9
+ help
+ The RTC driver needs to use one of the General Purpose Backup
+ Registers (GPBRs) as well as the RTT. You can choose which one
+ will be used. The default of zero is normally OK to use, but
+ on some systems other software needs to use that register.
config RTC_DRV_BFIN
tristate "Blackfin On-Chip RTC"
- depends on BFIN
+ depends on BLACKFIN
help
If you say yes here you will get support for the
Blackfin On-Chip Real Time Clock.