2 # RTC class/drivers configuration
9 tristate "Real Time Clock"
14 Generic RTC class support. If you say yes here, you will
15 be allowed to plug one or more RTCs to your system. You will
16 probably want to enable one or more of the interfaces below.
18 This driver can also be built as a module. If so, the module
19 will be called rtc-core.
24 bool "Set system time from RTC on startup and resume"
25 depends on RTC_CLASS = y
28 If you say yes here, the system time (wall clock) will be set using
29 the value read from a specified RTC device. This is useful to avoid
30 unnecessary fsck runs at boot time, and to network better.
32 config RTC_HCTOSYS_DEVICE
33 string "RTC used to set the system time"
34 depends on RTC_HCTOSYS = y
37 The RTC device that will be used to (re)initialize the system
38 clock, usually rtc0. Initialization is done when the system
39 starts up, and when it resumes from a low power state. This
40 device should record time in UTC, since the kernel won't do
43 The driver for this RTC device must be loaded before late_initcall
44 functions run, so it must usually be statically linked.
46 This clock should be battery-backed, so that it reads the correct
47 time when the system boots from a power-off state. Otherwise, your
48 system will need an external clock source (like an NTP server).
50 If the clock you specify here is not battery backed, it may still
51 be useful to reinitialize system time when resuming from system
52 sleep states. Do not specify an RTC here unless it stays powered
53 during all this system's supported sleep states.
56 bool "RTC debug support"
57 depends on RTC_CLASS = y
59 Say yes here to enable debugging support in the RTC framework
60 and individual RTC drivers.
62 comment "RTC interfaces"
65 boolean "/sys/class/rtc/rtcN (sysfs)"
69 Say yes here if you want to use your RTCs using sysfs interfaces,
70 /sys/class/rtc/rtc0 through /sys/.../rtcN.
75 boolean "/proc/driver/rtc (procfs for rtc0)"
79 Say yes here if you want to use your first RTC through the proc
80 interface, /proc/driver/rtc. Other RTCs will not be available
86 boolean "/dev/rtcN (character devices)"
89 Say yes here if you want to use your RTCs using the /dev
90 interfaces, which "udev" sets up as /dev/rtc0 through
93 You may want to set up a symbolic link so one of these
94 can be accessed as /dev/rtc, which is a name
95 expected by "hwclock" and some other programs. Recent
96 versions of "udev" are known to set up the symlink for you.
100 config RTC_INTF_DEV_UIE_EMUL
101 bool "RTC UIE emulation on dev interface"
102 depends on RTC_INTF_DEV
104 Provides an emulation for RTC_UIE if the underlying rtc chip
105 driver does not expose RTC_UIE ioctls. Those requests generate
106 once-per-second update interrupts, used for synchronization.
108 The emulation code will read the time from the hardware
109 clock several times per second, please enable this option
110 only if you know that you really need it.
113 tristate "Test driver/device"
115 If you say yes here you get support for the
116 RTC test driver. It's a software RTC which can be
117 used to test the RTC subsystem APIs. It gets
118 the time from the system clock.
119 You want this driver only if you are doing development
120 on the RTC subsystem. Please read the source code
123 This driver can also be built as a module. If so, the module
124 will be called rtc-test.
126 comment "I2C RTC drivers"
131 config RTC_DRV_DS1307
132 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
134 If you say yes here you get support for various compatible RTC
135 chips (often with battery backup) connected with I2C. This driver
136 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
137 EPSON RX-8025 and probably other chips. In some cases the RTC
138 must already have been initialized (by manufacturing or a
141 The first seven registers on these chips hold an RTC, and other
142 registers may add features such as NVRAM, a trickle charger for
143 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
144 sysfs, but other chip features may not be available.
146 This driver can also be built as a module. If so, the module
147 will be called rtc-ds1307.
149 config RTC_DRV_DS1374
150 tristate "Dallas/Maxim DS1374"
151 depends on RTC_CLASS && I2C
153 If you say yes here you get support for Dallas Semiconductor
154 DS1374 real-time clock chips. If an interrupt is associated
155 with the device, the alarm functionality is supported.
157 This driver can also be built as a module. If so, the module
158 will be called rtc-ds1374.
160 config RTC_DRV_DS1672
161 tristate "Dallas/Maxim DS1672"
163 If you say yes here you get support for the
164 Dallas/Maxim DS1672 timekeeping chip.
166 This driver can also be built as a module. If so, the module
167 will be called rtc-ds1672.
169 config RTC_DRV_DS3232
170 tristate "Dallas/Maxim DS3232"
171 depends on RTC_CLASS && I2C
173 If you say yes here you get support for Dallas Semiconductor
174 DS3232 real-time clock chips. If an interrupt is associated
175 with the device, the alarm functionality is supported.
177 This driver can also be built as a module. If so, the module
178 will be called rtc-ds3232.
180 config RTC_DRV_MAX6900
181 tristate "Maxim MAX6900"
183 If you say yes here you will get support for the
184 Maxim MAX6900 I2C RTC chip.
186 This driver can also be built as a module. If so, the module
187 will be called rtc-max6900.
189 config RTC_DRV_MAX8925
190 tristate "Maxim MAX8925"
191 depends on MFD_MAX8925
193 If you say yes here you will get support for the
194 RTC of Maxim MAX8925 PMIC.
196 This driver can also be built as a module. If so, the module
197 will be called rtc-max8925.
199 config RTC_DRV_MAX8998
200 tristate "Maxim MAX8998"
201 depends on MFD_MAX8998
203 If you say yes here you will get support for the
204 RTC of Maxim MAX8998 PMIC.
206 This driver can also be built as a module. If so, the module
207 will be called rtc-max8998.
209 config RTC_DRV_RS5C372
210 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
212 If you say yes here you get support for the
213 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
215 This driver can also be built as a module. If so, the module
216 will be called rtc-rs5c372.
218 config RTC_DRV_ISL1208
219 tristate "Intersil ISL1208"
221 If you say yes here you get support for the
222 Intersil ISL1208 RTC chip.
224 This driver can also be built as a module. If so, the module
225 will be called rtc-isl1208.
227 config RTC_DRV_ISL12022
228 tristate "Intersil ISL12022"
230 If you say yes here you get support for the
231 Intersil ISL12022 RTC chip.
233 This driver can also be built as a module. If so, the module
234 will be called rtc-isl12022.
237 tristate "Xicor/Intersil X1205"
239 If you say yes here you get support for the
240 Xicor/Intersil X1205 RTC chip.
242 This driver can also be built as a module. If so, the module
243 will be called rtc-x1205.
245 config RTC_DRV_PCF8563
246 tristate "Philips PCF8563/Epson RTC8564"
248 If you say yes here you get support for the
249 Philips PCF8563 RTC chip. The Epson RTC8564
252 This driver can also be built as a module. If so, the module
253 will be called rtc-pcf8563.
255 config RTC_DRV_PCF8583
256 tristate "Philips PCF8583"
258 If you say yes here you get support for the Philips PCF8583
259 RTC chip found on Acorn RiscPCs. This driver supports the
260 platform specific method of retrieving the current year from
261 the RTC's SRAM. It will work on other platforms with the same
262 chip, but the year will probably have to be tweaked.
264 This driver can also be built as a module. If so, the module
265 will be called rtc-pcf8583.
267 config RTC_DRV_M41T80
268 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
270 If you say Y here you will get support for the ST M41T60
271 and M41T80 RTC chips series. Currently, the following chips are
272 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
273 M41ST85, and M41ST87.
275 This driver can also be built as a module. If so, the module
276 will be called rtc-m41t80.
278 config RTC_DRV_M41T80_WDT
279 bool "ST M41T65/M41T80 series RTC watchdog timer"
280 depends on RTC_DRV_M41T80
282 If you say Y here you will get support for the
283 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
286 tristate "TI BQ32000"
288 If you say Y here you will get support for the TI
289 BQ32000 I2C RTC chip.
291 This driver can also be built as a module. If so, the module
292 will be called rtc-bq32k.
294 config RTC_DRV_DM355EVM
295 tristate "TI DaVinci DM355 EVM RTC"
296 depends on MFD_DM355EVM_MSP
298 Supports the RTC firmware in the MSP430 on the DM355 EVM.
300 config RTC_DRV_TWL92330
301 boolean "TI TWL92330/Menelaus"
304 If you say yes here you get support for the RTC on the
305 TWL92330 "Menelaus" power management chip, used with OMAP2
306 platforms. The support is integrated with the rest of
307 the Menelaus driver; it's not separate module.
309 config RTC_DRV_TWL4030
310 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
311 depends on RTC_CLASS && TWL4030_CORE
313 If you say yes here you get support for the RTC on the
314 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
316 This driver can also be built as a module. If so, the module
317 will be called rtc-twl.
319 config RTC_DRV_S35390A
320 tristate "Seiko Instruments S-35390A"
323 If you say yes here you will get support for the Seiko
324 Instruments S-35390A.
326 This driver can also be built as a module. If so the module
327 will be called rtc-s35390a.
329 config RTC_DRV_FM3130
330 tristate "Ramtron FM3130"
332 If you say Y here you will get support for the
333 Ramtron FM3130 RTC chips.
334 Ramtron FM3130 is a chip with two separate devices inside,
335 RTC clock and FRAM. This driver provides only RTC functionality.
337 This driver can also be built as a module. If so the module
338 will be called rtc-fm3130.
340 config RTC_DRV_RX8581
341 tristate "Epson RX-8581"
343 If you say yes here you will get support for the Epson RX-8581.
345 This driver can also be built as a module. If so the module
346 will be called rtc-rx8581.
348 config RTC_DRV_RX8025
349 tristate "Epson RX-8025SA/NB"
351 If you say yes here you get support for the Epson
352 RX-8025SA/NB RTC chips.
354 This driver can also be built as a module. If so, the module
355 will be called rtc-rx8025.
359 comment "SPI RTC drivers"
363 config RTC_DRV_M41T94
366 If you say yes here you will get support for the
367 ST M41T94 SPI RTC chip.
369 This driver can also be built as a module. If so, the module
370 will be called rtc-m41t94.
372 config RTC_DRV_DS1305
373 tristate "Dallas/Maxim DS1305/DS1306"
375 Select this driver to get support for the Dallas/Maxim DS1305
376 and DS1306 real time clock chips. These support a trickle
377 charger, alarms, and NVRAM in addition to the clock.
379 This driver can also be built as a module. If so, the module
380 will be called rtc-ds1305.
382 config RTC_DRV_DS1390
383 tristate "Dallas/Maxim DS1390/93/94"
385 If you say yes here you get support for the
386 Dallas/Maxim DS1390/93/94 chips.
388 This driver only supports the RTC feature, and not other chip
389 features such as alarms and trickle charging.
391 This driver can also be built as a module. If so, the module
392 will be called rtc-ds1390.
394 config RTC_DRV_MAX6902
395 tristate "Maxim MAX6902"
397 If you say yes here you will get support for the
398 Maxim MAX6902 SPI RTC chip.
400 This driver can also be built as a module. If so, the module
401 will be called rtc-max6902.
404 tristate "Epson RTC-9701JE"
406 If you say yes here you will get support for the
407 Epson RTC-9701JE SPI RTC chip.
409 This driver can also be built as a module. If so, the module
410 will be called rtc-r9701.
412 config RTC_DRV_RS5C348
413 tristate "Ricoh RS5C348A/B"
415 If you say yes here you get support for the
416 Ricoh RS5C348A and RS5C348B RTC chips.
418 This driver can also be built as a module. If so, the module
419 will be called rtc-rs5c348.
421 config RTC_DRV_DS3234
422 tristate "Maxim/Dallas DS3234"
424 If you say yes here you get support for the
425 Maxim/Dallas DS3234 SPI RTC chip.
427 This driver can also be built as a module. If so, the module
428 will be called rtc-ds3234.
430 config RTC_DRV_PCF2123
431 tristate "NXP PCF2123"
433 If you say yes here you get support for the NXP PCF2123
436 This driver can also be built as a module. If so, the module
437 will be called rtc-pcf2123.
441 comment "Platform RTC drivers"
443 # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
444 # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
445 # global rtc_lock ... it's not yet just another platform_device.
448 tristate "PC-style 'CMOS'"
449 depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
452 Say "yes" here to get direct support for the real time clock
453 found in every PC or ACPI-based system, and some other boards.
454 Specifically the original MC146818, compatibles like those in
455 PC south bridges, the DS12887 or M48T86, some multifunction
456 or LPC bus chips, and so on.
458 Your system will need to define the platform device used by
459 this driver, otherwise it won't be accessible. This means
460 you can safely enable this driver if you don't know whether
461 or not your board has this kind of hardware.
463 This driver can also be built as a module. If so, the module
464 will be called rtc-cmos.
467 tristate "Virtual RTC for Moorestown platforms"
469 default y if X86_MRST
472 Say "yes" here to get direct support for the real time clock
473 found on Moorestown platforms. The VRTC is a emulated RTC that
474 derives its clock source from a real RTC in the PMIC. The MC146818
475 style programming interface is mostly conserved, but any
476 updates are done via IPC calls to the system controller FW.
478 config RTC_DRV_DS1216
479 tristate "Dallas DS1216"
482 If you say yes here you get support for the Dallas DS1216 RTC chips.
484 config RTC_DRV_DS1286
485 tristate "Dallas DS1286"
487 If you say yes here you get support for the Dallas DS1286 RTC chips.
489 config RTC_DRV_DS1302
490 tristate "Dallas DS1302"
491 depends on SH_SECUREEDGE5410
493 If you say yes here you get support for the Dallas DS1302 RTC chips.
495 config RTC_DRV_DS1511
496 tristate "Dallas DS1511"
499 If you say yes here you get support for the
500 Dallas DS1511 timekeeping/watchdog chip.
502 This driver can also be built as a module. If so, the module
503 will be called rtc-ds1511.
505 config RTC_DRV_DS1553
506 tristate "Maxim/Dallas DS1553"
508 If you say yes here you get support for the
509 Maxim/Dallas DS1553 timekeeping chip.
511 This driver can also be built as a module. If so, the module
512 will be called rtc-ds1553.
514 config RTC_DRV_DS1742
515 tristate "Maxim/Dallas DS1742/1743"
517 If you say yes here you get support for the
518 Maxim/Dallas DS1742/1743 timekeeping chip.
520 This driver can also be built as a module. If so, the module
521 will be called rtc-ds1742.
527 If you say yes here you will get support for the EFI
530 This driver can also be built as a module. If so, the module
531 will be called rtc-efi.
533 config RTC_DRV_STK17TA8
534 tristate "Simtek STK17TA8"
537 If you say yes here you get support for the
538 Simtek STK17TA8 timekeeping chip.
540 This driver can also be built as a module. If so, the module
541 will be called rtc-stk17ta8.
543 config RTC_DRV_M48T86
544 tristate "ST M48T86/Dallas DS12887"
546 If you say Y here you will get support for the
547 ST M48T86 and Dallas DS12887 RTC chips.
549 This driver can also be built as a module. If so, the module
550 will be called rtc-m48t86.
552 config RTC_DRV_M48T35
555 If you say Y here you will get support for the
558 This driver can also be built as a module, if so, the module
559 will be called "rtc-m48t35".
561 config RTC_DRV_M48T59
562 tristate "ST M48T59/M48T08/M48T02"
564 If you say Y here you will get support for the
565 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
567 These chips are usually found in Sun SPARC and UltraSPARC
570 This driver can also be built as a module, if so, the module
571 will be called "rtc-m48t59".
573 config RTC_DRV_MSM6242
574 tristate "Oki MSM6242"
576 If you say yes here you get support for the Oki MSM6242
577 timekeeping chip. It is used in some Amiga models (e.g. A2000).
579 This driver can also be built as a module. If so, the module
580 will be called rtc-msm6242.
583 tristate "Freescale IMX DryIce Real Time Clock"
587 Support for Freescale IMX DryIce RTC
589 This driver can also be built as a module, if so, the module
590 will be called "rtc-imxdi".
593 tristate "Freescale MXC Real Time Clock"
597 If you say yes here you get support for the Freescale MXC
600 This driver can also be built as a module, if so, the module
601 will be called "rtc-mxc".
603 config RTC_DRV_BQ4802
606 If you say Y here you will get support for the TI
609 This driver can also be built as a module. If so, the module
610 will be called rtc-bq4802.
612 config RTC_DRV_RP5C01
613 tristate "Ricoh RP5C01"
615 If you say yes here you get support for the Ricoh RP5C01
616 timekeeping chip. It is used in some Amiga models (e.g. A3000
619 This driver can also be built as a module. If so, the module
620 will be called rtc-rp5c01.
623 tristate "EM Microelectronic V3020"
625 If you say yes here you will get support for the
626 EM Microelectronic v3020 RTC chip.
628 This driver can also be built as a module. If so, the module
629 will be called rtc-v3020.
631 config RTC_DRV_WM831X
632 tristate "Wolfson Microelectronics WM831x RTC"
633 depends on MFD_WM831X
635 If you say yes here you will get support for the RTC subsystem
636 of the Wolfson Microelectronics WM831X series PMICs.
638 This driver can also be built as a module. If so, the module
639 will be called "rtc-wm831x".
641 config RTC_DRV_WM8350
642 tristate "Wolfson Microelectronics WM8350 RTC"
643 depends on MFD_WM8350
645 If you say yes here you will get support for the RTC subsystem
646 of the Wolfson Microelectronics WM8350.
648 This driver can also be built as a module. If so, the module
649 will be called "rtc-wm8350".
651 config RTC_DRV_PCF50633
652 depends on MFD_PCF50633
653 tristate "NXP PCF50633 RTC"
655 If you say yes here you get support for the RTC subsystem of the
656 NXP PCF50633 used in embedded systems.
658 config RTC_DRV_AB3100
659 tristate "ST-Ericsson AB3100 RTC"
660 depends on AB3100_CORE
661 default y if AB3100_CORE
663 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
664 support. This chip contains a battery- and capacitor-backed RTC.
666 config RTC_DRV_AB8500
667 tristate "ST-Ericsson AB8500 RTC"
668 depends on AB8500_CORE
670 Select this to enable the ST-Ericsson AB8500 power management IC RTC
671 support. This chip contains a battery- and capacitor-backed RTC.
673 config RTC_DRV_NUC900
674 tristate "NUC910/NUC920 RTC driver"
675 depends on RTC_CLASS && ARCH_W90X900
677 If you say yes here you get support for the RTC subsystem of the
678 NUC910/NUC920 used in embedded systems.
680 comment "on-CPU RTC drivers"
682 config RTC_DRV_DAVINCI
683 tristate "TI DaVinci RTC"
684 depends on ARCH_DAVINCI_DM365
686 If you say yes here you get support for the RTC on the
687 DaVinci platforms (DM365).
689 This driver can also be built as a module. If so, the module
690 will be called rtc-davinci.
694 depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX
696 Say "yes" here to support the real time clock on TI OMAP1 and
697 DA8xx/OMAP-L13x chips. This driver can also be built as a
698 module called rtc-omap.
703 This will include RTC support for Samsung SoCs. If
704 you want to include RTC support for any machine, kindly
705 select this in the respective mach-XXXX/Kconfig file.
708 tristate "Samsung S3C series SoC RTC"
709 depends on ARCH_S3C2410 || ARCH_S3C64XX || HAVE_S3C_RTC
711 RTC (Realtime Clock) driver for the clock inbuilt into the
712 Samsung S3C24XX series of SoCs. This can provide periodic
713 interrupt rates from 1Hz to 64Hz for user programs, and
716 The driver currently supports the common features on all the
717 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
720 This driver can also be build as a module. If so, the module
721 will be called rtc-s3c.
723 config RTC_DRV_EP93XX
724 tristate "Cirrus Logic EP93XX"
725 depends on ARCH_EP93XX
727 If you say yes here you get support for the
728 RTC embedded in the Cirrus Logic EP93XX processors.
730 This driver can also be built as a module. If so, the module
731 will be called rtc-ep93xx.
733 config RTC_DRV_SA1100
734 tristate "SA11x0/PXA2xx"
735 depends on ARCH_SA1100 || ARCH_PXA
737 If you say Y here you will get access to the real time clock
738 built into your SA11x0 or PXA2xx CPU.
740 To compile this driver as a module, choose M here: the
741 module will be called rtc-sa1100.
744 tristate "SuperH On-Chip RTC"
745 depends on RTC_CLASS && SUPERH && HAVE_CLK
747 Say Y here to enable support for the on-chip RTC found in
748 most SuperH processors.
750 To compile this driver as a module, choose M here: the
751 module will be called rtc-sh.
753 config RTC_DRV_VR41XX
754 tristate "NEC VR41XX"
755 depends on CPU_VR41XX
757 If you say Y here you will get access to the real time clock
758 built into your NEC VR41XX CPU.
760 To compile this driver as a module, choose M here: the
761 module will be called rtc-vr41xx.
764 tristate "ARM AMBA PL030 RTC"
767 If you say Y here you will get access to ARM AMBA
768 PrimeCell PL030 RTC found on certain ARM SOCs.
770 To compile this driver as a module, choose M here: the
771 module will be called rtc-pl030.
774 tristate "ARM AMBA PL031 RTC"
777 If you say Y here you will get access to ARM AMBA
778 PrimeCell PL031 RTC found on certain ARM SOCs.
780 To compile this driver as a module, choose M here: the
781 module will be called rtc-pl031.
783 config RTC_DRV_AT32AP700X
784 tristate "AT32AP700X series RTC"
785 depends on PLATFORM_AT32AP
787 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
788 AT32AP700x family processors.
790 config RTC_DRV_AT91RM9200
791 tristate "AT91RM9200 or some AT91SAM9 RTC"
792 depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
794 Driver for the internal RTC (Realtime Clock) module found on
795 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
796 this is powered by the backup power supply.
798 config RTC_DRV_AT91SAM9
799 tristate "AT91SAM9x/AT91CAP9 RTT as RTC"
800 depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
802 RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
803 (Real Time Timer). These timers are powered by the backup power
804 supply (such as a small coin cell battery), but do not need to
807 (On AT91SAM9rl and AT91SAM9G45 chips you probably want to use the
808 dedicated RTC module and leave the RTT available for other uses.)
810 config RTC_DRV_AT91SAM9_RTT
814 prompt "RTT module Number" if ARCH_AT91SAM9263
815 depends on RTC_DRV_AT91SAM9
817 More than one RTT module is available. You can choose which
818 one will be used as an RTC. The default of zero is normally
819 OK to use, though some systems use that for non-RTC purposes.
821 config RTC_DRV_AT91SAM9_GPBR
823 range 0 3 if !ARCH_AT91SAM9263
824 range 0 15 if ARCH_AT91SAM9263
826 prompt "Backup Register Number"
827 depends on RTC_DRV_AT91SAM9
829 The RTC driver needs to use one of the General Purpose Backup
830 Registers (GPBRs) as well as the RTT. You can choose which one
831 will be used. The default of zero is normally OK to use, but
832 on some systems other software needs to use that register.
834 config RTC_DRV_AU1XXX
835 tristate "Au1xxx Counter0 RTC support"
836 depends on MIPS_ALCHEMY
838 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
839 counter) to be used as a RTC.
841 This driver can also be built as a module. If so, the module
842 will be called rtc-au1xxx.
845 tristate "Blackfin On-Chip RTC"
846 depends on BLACKFIN && !BF561
848 If you say yes here you will get support for the
849 Blackfin On-Chip Real Time Clock.
851 This driver can also be built as a module. If so, the module
852 will be called rtc-bfin.
854 config RTC_DRV_RS5C313
855 tristate "Ricoh RS5C313"
856 depends on SH_LANDISK
858 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
860 config RTC_DRV_GENERIC
861 tristate "Generic RTC support"
862 # Please consider writing a new RTC driver instead of using the generic
864 depends on PARISC || M68K || PPC || SUPERH32
866 Say Y or M here to enable RTC support on systems using the generic
867 RTC abstraction. If you do not know what you are doing, you should
871 tristate "PXA27x/PXA3xx"
874 If you say Y here you will get access to the real time clock
875 built into your PXA27x or PXA3xx CPU.
877 This RTC driver uses PXA RTC registers available since pxa27x
878 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
882 bool "SUN4V Hypervisor RTC"
885 If you say Y here you will get support for the Hypervisor
886 based RTC on SUN4V systems.
888 config RTC_DRV_STARFIRE
892 If you say Y here you will get support for the RTC found on
895 config RTC_DRV_TX4939
896 tristate "TX4939 SoC"
897 depends on SOC_TX4939
899 Driver for the internal RTC (Realtime Clock) module found on
903 tristate "Marvell SoC RTC"
904 depends on ARCH_KIRKWOOD || ARCH_DOVE
906 If you say yes here you will get support for the in-chip RTC
907 that can be found in some of Marvell's SoC devices, such as
908 the Kirkwood 88F6281 and 88F6192.
910 This driver can also be built as a module. If so, the module
911 will be called rtc-mv.
917 If you say yes here you will get support for the RTC on PS3.
919 This driver can also be built as a module. If so, the module
920 will be called rtc-ps3.
922 config RTC_DRV_COH901331
923 tristate "ST-Ericsson COH 901 331 RTC"
926 If you say Y here you will get access to ST-Ericsson
927 COH 901 331 RTC clock found in some ST-Ericsson Mobile
930 This driver can also be built as a module. If so, the module
931 will be called "rtc-coh901331".
935 tristate "Freescale STMP3xxx RTC"
936 depends on ARCH_STMP3XXX
938 If you say yes here you will get support for the onboard
941 This driver can also be built as a module. If so, the module
942 will be called rtc-stmp3xxx.
948 If you say Y here you will get support for the RTC found on
949 the PCAP2 ASIC used on some Motorola phones.
951 config RTC_DRV_MC13XXX
952 depends on MFD_MC13XXX
953 tristate "Freescale MC13xxx RTC"
955 This enables support for the RTCs found on Freescale's PMICs
958 config RTC_DRV_MPC5121
959 tristate "Freescale MPC5121 built-in RTC"
960 depends on PPC_MPC512x && RTC_CLASS
962 If you say yes here you will get support for the
963 built-in RTC MPC5121.
965 This driver can also be built as a module. If so, the module
966 will be called rtc-mpc5121.
968 config RTC_DRV_JZ4740
969 tristate "Ingenic JZ4740 SoC"
971 depends on MACH_JZ4740
973 If you say yes here you get support for the Ingenic JZ4740 SoC RTC
976 This driver can also be buillt as a module. If so, the module
977 will be called rtc-jz4740.
979 config RTC_DRV_LPC32XX
980 depends on ARCH_LPC32XX
981 tristate "NXP LPC32XX RTC"
983 This enables support for the NXP RTC in the LPC32XX
985 This driver can also be buillt as a module. If so, the module
986 will be called rtc-lpc32xx.
989 tristate "NVIDIA Tegra Internal RTC driver"
990 depends on RTC_CLASS && ARCH_TEGRA
992 If you say yes here you get support for the
993 Tegra 200 series internal RTC module.
995 This drive can also be built as a module. If so, the module
996 will be called rtc-tegra.