| # |
| # RTC class/drivers configuration |
| # |
| |
| config RTC_LIB |
| tristate |
| |
| menuconfig RTC_CLASS |
| tristate "Real Time Clock" |
| default n |
| depends on !S390 |
| 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 or more of the interfaces below. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-class. |
| |
| 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 |
| default y |
| help |
| If you say yes here, the system time (wall clock) will be set using |
| the value read from a specified RTC device. This is useful to avoid |
| unnecessary fsck runs at boot time, and to network better. |
| |
| config RTC_HCTOSYS_DEVICE |
| string "RTC used to set the system time" |
| depends on RTC_HCTOSYS = y |
| default "rtc0" |
| 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. 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. |
| |
| This clock should be battery-backed, so that it reads the correct |
| time when the system boots from a power-off state. Otherwise, your |
| system will need an external clock source (like an NTP server). |
| |
| 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 |
| during all this system's supported sleep states. |
| |
| config RTC_DEBUG |
| bool "RTC debug support" |
| depends on RTC_CLASS = y |
| help |
| Say yes here to enable debugging support in the RTC framework |
| and individual RTC drivers. |
| |
| comment "RTC interfaces" |
| |
| config RTC_INTF_SYSFS |
| boolean "/sys/class/rtc/rtcN (sysfs)" |
| depends on SYSFS |
| default RTC_CLASS |
| help |
| Say yes here if you want to use your RTCs using sysfs interfaces, |
| /sys/class/rtc/rtc0 through /sys/.../rtcN. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-sysfs. |
| |
| config RTC_INTF_PROC |
| boolean "/proc/driver/rtc (procfs for rtc0)" |
| depends on PROC_FS |
| default RTC_CLASS |
| help |
| Say yes here if you want to use your first RTC through the proc |
| interface, /proc/driver/rtc. Other RTCs will not be available |
| through that API. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-proc. |
| |
| config RTC_INTF_DEV |
| boolean "/dev/rtcN (character devices)" |
| default RTC_CLASS |
| help |
| Say yes here if you want to use your RTCs using the /dev |
| interfaces, which "udev" sets up as /dev/rtc0 through |
| /dev/rtcN. You may want to set up a symbolic link so one |
| of these can be accessed as /dev/rtc, which is a name |
| expected by "hwclock" and some other programs. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-dev. |
| |
| config RTC_INTF_DEV_UIE_EMUL |
| bool "RTC UIE emulation on dev interface" |
| depends on RTC_INTF_DEV |
| help |
| Provides an emulation for RTC_UIE if the underlying rtc chip |
| driver does not expose RTC_UIE ioctls. Those requests generate |
| once-per-second update interrupts, used for synchronization. |
| |
| config RTC_DRV_TEST |
| tristate "Test driver/device" |
| 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. |
| |
| comment "I2C RTC drivers" |
| depends on I2C |
| |
| if I2C |
| |
| config RTC_DRV_DS1307 |
| tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00" |
| help |
| If you say yes here you get support for various compatible RTC |
| chips (often with battery backup) connected with I2C. This driver |
| should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00, |
| and probably other chips. In some cases the RTC must already |
| have been initialized (by manufacturing or a bootloader). |
| |
| 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. 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 "Dallas/Maxim DS1374" |
| depends on RTC_CLASS && I2C |
| help |
| If you say yes here you get support for Dallas Semiconductor |
| DS1374 real-time clock chips. If an interrupt is associated |
| with the device, the alarm functionality is supported. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-ds1374. |
| |
| config RTC_DRV_DS1672 |
| tristate "Dallas/Maxim DS1672" |
| 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_MAX6900 |
| tristate "Maxim MAX6900" |
| help |
| If you say yes here you will get support for the |
| Maxim MAX6900 I2C RTC chip. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-max6900. |
| |
| config RTC_DRV_RS5C372 |
| tristate "Ricoh RS5C372A/B, RV5C386, RV5C387A" |
| help |
| If you say yes here you get support for the |
| Ricoh RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-rs5c372. |
| |
| config RTC_DRV_ISL1208 |
| tristate "Intersil ISL1208" |
| help |
| If you say yes here you get support for the |
| Intersil ISL1208 RTC chip. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-isl1208. |
| |
| config RTC_DRV_X1205 |
| tristate "Xicor/Intersil X1205" |
| 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_PCF8563 |
| tristate "Philips PCF8563/Epson RTC8564" |
| 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_PCF8583 |
| tristate "Philips PCF8583" |
| help |
| If you say yes here you get support for the Philips PCF8583 |
| RTC chip found on Acorn RiscPCs. This driver supports the |
| platform specific method of retrieving the current year from |
| the RTC's SRAM. It will work on other platforms with the same |
| chip, but the year will probably have to be tweaked. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-pcf8583. |
| |
| config RTC_DRV_M41T80 |
| 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 |
| supported: M41T80, M41T81, M41T82, M41T83, M41ST84, M41ST85 |
| and M41ST87. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-m41t80. |
| |
| config RTC_DRV_M41T80_WDT |
| bool "ST M41T80 series RTC watchdog timer" |
| depends on RTC_DRV_M41T80 |
| help |
| If you say Y here you will get support for the |
| watchdog timer in ST M41T80 RTC chips series. |
| |
| config RTC_DRV_TWL92330 |
| boolean "TI TWL92330/Menelaus" |
| depends on MENELAUS |
| help |
| If you say yes here you get support for the RTC on the |
| 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. |
| |
| endif # I2C |
| |
| comment "SPI RTC drivers" |
| |
| if SPI_MASTER |
| |
| config RTC_DRV_MAX6902 |
| tristate "Maxim MAX6902" |
| help |
| 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-max6902. |
| |
| config RTC_DRV_R9701 |
| tristate "Epson RTC-9701JE" |
| help |
| If you say yes here you will get support for the |
| Epson RTC-9701JE SPI RTC chip. |
| |
| This driver can also be built as a module. If so, the module |
| 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 |
| |
| comment "Platform RTC drivers" |
| |
| # 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'" |
| depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS |
| 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_DS1216 |
| tristate "Dallas DS1216" |
| depends on SNI_RM |
| help |
| If you say yes here you get support for the Dallas DS1216 RTC chips. |
| |
| 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 DS1511 timekeeping/watchdog chip. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-ds1511. |
| |
| config RTC_DRV_DS1553 |
| tristate "Maxim/Dallas DS1553" |
| help |
| If you say yes here you get support for the |
| Maxim/Dallas DS1553 timekeeping chip. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-ds1553. |
| |
| config RTC_DRV_DS1742 |
| tristate "Maxim/Dallas DS1742/1743" |
| help |
| If you say yes here you get support for the |
| 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 |
| 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_M48T59 |
| tristate "ST M48T59" |
| help |
| If you say Y here you will get support for the |
| ST M48T59 RTC chip. |
| |
| This driver can also be built as a module, if so, the module |
| will be called "rtc-m48t59". |
| |
| config RTC_DRV_V3020 |
| tristate "EM Microelectronic V3020" |
| help |
| If you say yes here you will get support for the |
| EM Microelectronic v3020 RTC chip. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-v3020. |
| |
| comment "on-CPU RTC drivers" |
| |
| config RTC_DRV_OMAP |
| tristate "TI OMAP1" |
| depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 |
| help |
| Say "yes" here to support the real time clock on TI OMAP1 chips. |
| This driver can also be built as a module called rtc-omap. |
| |
| config RTC_DRV_S3C |
| tristate "Samsung S3C series SoC RTC" |
| depends on ARCH_S3C2410 |
| help |
| RTC (Realtime Clock) driver for the clock inbuilt into the |
| Samsung S3C24XX series of SoCs. This can provide periodic |
| interrupt rates from 1Hz to 64Hz for user programs, and |
| wakeup from Alarm. |
| |
| The driver currently supports the common features on all the |
| S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440 |
| and S3C2442. |
| |
| This driver can also be build as a module. If so, the module |
| will be called rtc-s3c. |
| |
| config RTC_DRV_EP93XX |
| tristate "Cirrus Logic EP93XX" |
| depends on 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 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_SH |
| tristate "SuperH On-Chip RTC" |
| depends on RTC_CLASS && SUPERH |
| help |
| Say Y here to enable support for the on-chip RTC found in |
| most SuperH processors. |
| |
| To compile this driver as a module, choose M here: the |
| module will be called rtc-sh. |
| |
| config RTC_DRV_VR41XX |
| tristate "NEC VR41XX" |
| depends on 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_PL031 |
| tristate "ARM AMBA PL031 RTC" |
| depends on ARM_AMBA |
| help |
| If you say Y here you will get access to ARM AMBA |
| PrimeCell PL031 RTC found on certain ARM SOCs. |
| |
| To compile this driver as a module, choose M here: the |
| module will be called rtc-pl031. |
| |
| config RTC_DRV_AT32AP700X |
| tristate "AT32AP700X series RTC" |
| depends on PLATFORM_AT32AP |
| help |
| Driver for the internal RTC (Realtime Clock) on Atmel AVR32 |
| AT32AP700x family processors. |
| |
| config RTC_DRV_AT91RM9200 |
| 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 BLACKFIN |
| help |
| If you say yes here you will get support for the |
| Blackfin On-Chip Real Time Clock. |
| |
| This driver can also be built as a module. If so, the module |
| will be called rtc-bfin. |
| |
| config RTC_DRV_RS5C313 |
| tristate "Ricoh RS5C313" |
| depends on SH_LANDISK |
| help |
| If you say yes here you get support for the Ricoh RS5C313 RTC chips. |
| |
| endif # RTC_CLASS |