2 # RTC class/drivers configuration
11 depends on !S390 && !UML
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.
21 bool "Set system time from RTC on startup and resume"
24 If you say yes here, the system time (wall clock) will be set using
25 the value read from a specified RTC device. This is useful to avoid
26 unnecessary fsck runs at boot time, and to network better.
28 config RTC_HCTOSYS_DEVICE
29 string "RTC used to set the system time"
30 depends on RTC_HCTOSYS = y
33 The RTC device that will be used to (re)initialize the system
34 clock, usually rtc0. Initialization is done when the system
35 starts up, and when it resumes from a low power state. This
36 device should record time in UTC, since the kernel won't do
39 The driver for this RTC device must be loaded before late_initcall
40 functions run, so it must usually be statically linked.
42 This clock should be battery-backed, so that it reads the correct
43 time when the system boots from a power-off state. Otherwise, your
44 system will need an external clock source (like an NTP server).
46 If the clock you specify here is not battery backed, it may still
47 be useful to reinitialize system time when resuming from system
48 sleep states. Do not specify an RTC here unless it stays powered
49 during all this system's supported sleep states.
52 bool "RTC debug support"
54 Say yes here to enable debugging support in the RTC framework
55 and individual RTC drivers.
57 comment "RTC interfaces"
60 boolean "/sys/class/rtc/rtcN (sysfs)"
64 Say yes here if you want to use your RTCs using sysfs interfaces,
65 /sys/class/rtc/rtc0 through /sys/.../rtcN.
70 boolean "/proc/driver/rtc (procfs for rtcN)"
74 Say yes here if you want to use your system clock RTC through
75 the proc interface, /proc/driver/rtc.
76 Other RTCs will not be available through that API.
77 If there is no RTC for the system clock, then the first RTC(rtc0)
83 boolean "/dev/rtcN (character devices)"
86 Say yes here if you want to use your RTCs using the /dev
87 interfaces, which "udev" sets up as /dev/rtc0 through
90 You may want to set up a symbolic link so one of these
91 can be accessed as /dev/rtc, which is a name
92 expected by "hwclock" and some other programs. Recent
93 versions of "udev" are known to set up the symlink for you.
97 config RTC_INTF_DEV_UIE_EMUL
98 bool "RTC UIE emulation on dev interface"
99 depends on RTC_INTF_DEV
101 Provides an emulation for RTC_UIE if the underlying rtc chip
102 driver does not expose RTC_UIE ioctls. Those requests generate
103 once-per-second update interrupts, used for synchronization.
105 The emulation code will read the time from the hardware
106 clock several times per second, please enable this option
107 only if you know that you really need it.
110 tristate "Test driver/device"
112 If you say yes here you get support for the
113 RTC test driver. It's a software RTC which can be
114 used to test the RTC subsystem APIs. It gets
115 the time from the system clock.
116 You want this driver only if you are doing development
117 on the RTC subsystem. Please read the source code
120 This driver can also be built as a module. If so, the module
121 will be called rtc-test.
123 comment "I2C RTC drivers"
128 config RTC_DRV_88PM860X
129 tristate "Marvell 88PM860x"
130 depends on I2C && MFD_88PM860X
132 If you say yes here you get support for RTC function in Marvell
135 This driver can also be built as a module. If so, the module
136 will be called rtc-88pm860x.
138 config RTC_DRV_88PM80X
139 tristate "Marvell 88PM80x"
140 depends on I2C && MFD_88PM800
142 If you say yes here you get support for RTC function in Marvell
145 This driver can also be built as a module. If so, the module
146 will be called rtc-88pm80x.
148 config RTC_DRV_DS1307
149 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
151 If you say yes here you get support for various compatible RTC
152 chips (often with battery backup) connected with I2C. This driver
153 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
154 EPSON RX-8025 and probably other chips. In some cases the RTC
155 must already have been initialized (by manufacturing or a
158 The first seven registers on these chips hold an RTC, and other
159 registers may add features such as NVRAM, a trickle charger for
160 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
161 sysfs, but other chip features may not be available.
163 This driver can also be built as a module. If so, the module
164 will be called rtc-ds1307.
166 config RTC_DRV_DS1374
167 tristate "Dallas/Maxim DS1374"
170 If you say yes here you get support for Dallas Semiconductor
171 DS1374 real-time clock chips. If an interrupt is associated
172 with the device, the alarm functionality is supported.
174 This driver can also be built as a module. If so, the module
175 will be called rtc-ds1374.
177 config RTC_DRV_DS1672
178 tristate "Dallas/Maxim DS1672"
180 If you say yes here you get support for the
181 Dallas/Maxim DS1672 timekeeping chip.
183 This driver can also be built as a module. If so, the module
184 will be called rtc-ds1672.
186 config RTC_DRV_DS3232
187 tristate "Dallas/Maxim DS3232"
190 If you say yes here you get support for Dallas Semiconductor
191 DS3232 real-time clock chips. If an interrupt is associated
192 with the device, the alarm functionality is supported.
194 This driver can also be built as a module. If so, the module
195 will be called rtc-ds3232.
197 config RTC_DRV_MAX6900
198 tristate "Maxim MAX6900"
200 If you say yes here you will get support for the
201 Maxim MAX6900 I2C RTC chip.
203 This driver can also be built as a module. If so, the module
204 will be called rtc-max6900.
206 config RTC_DRV_MAX8907
207 tristate "Maxim MAX8907"
208 depends on MFD_MAX8907
210 If you say yes here you will get support for the
211 RTC of Maxim MAX8907 PMIC.
213 This driver can also be built as a module. If so, the module
214 will be called rtc-max8907.
216 config RTC_DRV_MAX8925
217 tristate "Maxim MAX8925"
218 depends on MFD_MAX8925
220 If you say yes here you will get support for the
221 RTC of Maxim MAX8925 PMIC.
223 This driver can also be built as a module. If so, the module
224 will be called rtc-max8925.
226 config RTC_DRV_MAX8998
227 tristate "Maxim MAX8998"
228 depends on MFD_MAX8998
230 If you say yes here you will get support for the
231 RTC of Maxim MAX8998 PMIC.
233 This driver can also be built as a module. If so, the module
234 will be called rtc-max8998.
236 config RTC_DRV_RS5C372
237 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
239 If you say yes here you get support for the
240 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
242 This driver can also be built as a module. If so, the module
243 will be called rtc-rs5c372.
245 config RTC_DRV_ISL1208
246 tristate "Intersil ISL1208"
248 If you say yes here you get support for the
249 Intersil ISL1208 RTC chip.
251 This driver can also be built as a module. If so, the module
252 will be called rtc-isl1208.
254 config RTC_DRV_ISL12022
255 tristate "Intersil ISL12022"
257 If you say yes here you get support for the
258 Intersil ISL12022 RTC chip.
260 This driver can also be built as a module. If so, the module
261 will be called rtc-isl12022.
264 tristate "Xicor/Intersil X1205"
266 If you say yes here you get support for the
267 Xicor/Intersil X1205 RTC chip.
269 This driver can also be built as a module. If so, the module
270 will be called rtc-x1205.
272 config RTC_DRV_PCF8523
273 tristate "NXP PCF8523"
275 If you say yes here you get support for the NXP PCF8523 RTC
278 This driver can also be built as a module. If so, the module
279 will be called rtc-pcf8523.
281 config RTC_DRV_PCF8563
282 tristate "Philips PCF8563/Epson RTC8564"
284 If you say yes here you get support for the
285 Philips PCF8563 RTC chip. The Epson RTC8564
288 This driver can also be built as a module. If so, the module
289 will be called rtc-pcf8563.
291 config RTC_DRV_PCF8583
292 tristate "Philips PCF8583"
294 If you say yes here you get support for the Philips PCF8583
295 RTC chip found on Acorn RiscPCs. This driver supports the
296 platform specific method of retrieving the current year from
297 the RTC's SRAM. It will work on other platforms with the same
298 chip, but the year will probably have to be tweaked.
300 This driver can also be built as a module. If so, the module
301 will be called rtc-pcf8583.
303 config RTC_DRV_M41T80
304 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
306 If you say Y here you will get support for the ST M41T60
307 and M41T80 RTC chips series. Currently, the following chips are
308 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
309 M41ST85, and M41ST87.
311 This driver can also be built as a module. If so, the module
312 will be called rtc-m41t80.
314 config RTC_DRV_M41T80_WDT
315 bool "ST M41T65/M41T80 series RTC watchdog timer"
316 depends on RTC_DRV_M41T80
318 If you say Y here you will get support for the
319 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
322 tristate "TI BQ32000"
324 If you say Y here you will get support for the TI
325 BQ32000 I2C RTC chip.
327 This driver can also be built as a module. If so, the module
328 will be called rtc-bq32k.
330 config RTC_DRV_DM355EVM
331 tristate "TI DaVinci DM355 EVM RTC"
332 depends on MFD_DM355EVM_MSP
334 Supports the RTC firmware in the MSP430 on the DM355 EVM.
336 config RTC_DRV_TWL92330
337 boolean "TI TWL92330/Menelaus"
340 If you say yes here you get support for the RTC on the
341 TWL92330 "Menelaus" power management chip, used with OMAP2
342 platforms. The support is integrated with the rest of
343 the Menelaus driver; it's not separate module.
345 config RTC_DRV_TWL4030
346 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
347 depends on TWL4030_CORE
349 If you say yes here you get support for the RTC on the
350 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
352 This driver can also be built as a module. If so, the module
353 will be called rtc-twl.
355 config RTC_DRV_TPS65910
356 tristate "TI TPS65910 RTC driver"
357 depends on RTC_CLASS && MFD_TPS65910
359 If you say yes here you get support for the RTC on the
362 This driver can also be built as a module. If so, the module
363 will be called rtc-tps65910.
365 config RTC_DRV_RC5T583
366 tristate "RICOH 5T583 RTC driver"
367 depends on MFD_RC5T583
369 If you say yes here you get support for the RTC on the
372 This driver can also be built as a module. If so, the module
373 will be called rtc-rc5t583.
375 config RTC_DRV_S35390A
376 tristate "Seiko Instruments S-35390A"
379 If you say yes here you will get support for the Seiko
380 Instruments S-35390A.
382 This driver can also be built as a module. If so the module
383 will be called rtc-s35390a.
385 config RTC_DRV_FM3130
386 tristate "Ramtron FM3130"
388 If you say Y here you will get support for the
389 Ramtron FM3130 RTC chips.
390 Ramtron FM3130 is a chip with two separate devices inside,
391 RTC clock and FRAM. This driver provides only RTC functionality.
393 This driver can also be built as a module. If so the module
394 will be called rtc-fm3130.
396 config RTC_DRV_RX8581
397 tristate "Epson RX-8581"
399 If you say yes here you will get support for the Epson RX-8581.
401 This driver can also be built as a module. If so the module
402 will be called rtc-rx8581.
404 config RTC_DRV_RX8025
405 tristate "Epson RX-8025SA/NB"
407 If you say yes here you get support for the Epson
408 RX-8025SA/NB RTC chips.
410 This driver can also be built as a module. If so, the module
411 will be called rtc-rx8025.
413 config RTC_DRV_EM3027
414 tristate "EM Microelectronic EM3027"
416 If you say yes here you get support for the EM
417 Microelectronic EM3027 RTC chips.
419 This driver can also be built as a module. If so, the module
420 will be called rtc-em3027.
422 config RTC_DRV_RV3029C2
423 tristate "Micro Crystal RTC"
425 If you say yes here you get support for the Micro Crystal
428 This driver can also be built as a module. If so, the module
429 will be called rtc-rv3029c2.
433 comment "SPI RTC drivers"
437 config RTC_DRV_M41T93
440 If you say yes here you will get support for the
441 ST M41T93 SPI RTC chip.
443 This driver can also be built as a module. If so, the module
444 will be called rtc-m41t93.
446 config RTC_DRV_M41T94
449 If you say yes here you will get support for the
450 ST M41T94 SPI RTC chip.
452 This driver can also be built as a module. If so, the module
453 will be called rtc-m41t94.
455 config RTC_DRV_DS1305
456 tristate "Dallas/Maxim DS1305/DS1306"
458 Select this driver to get support for the Dallas/Maxim DS1305
459 and DS1306 real time clock chips. These support a trickle
460 charger, alarms, and NVRAM in addition to the clock.
462 This driver can also be built as a module. If so, the module
463 will be called rtc-ds1305.
465 config RTC_DRV_DS1390
466 tristate "Dallas/Maxim DS1390/93/94"
468 If you say yes here you get support for the
469 Dallas/Maxim DS1390/93/94 chips.
471 This driver only supports the RTC feature, and not other chip
472 features such as alarms and trickle charging.
474 This driver can also be built as a module. If so, the module
475 will be called rtc-ds1390.
477 config RTC_DRV_MAX6902
478 tristate "Maxim MAX6902"
480 If you say yes here you will get support for the
481 Maxim MAX6902 SPI RTC chip.
483 This driver can also be built as a module. If so, the module
484 will be called rtc-max6902.
487 tristate "Epson RTC-9701JE"
489 If you say yes here you will get support for the
490 Epson RTC-9701JE SPI RTC chip.
492 This driver can also be built as a module. If so, the module
493 will be called rtc-r9701.
495 config RTC_DRV_RS5C348
496 tristate "Ricoh RS5C348A/B"
498 If you say yes here you get support for the
499 Ricoh RS5C348A and RS5C348B RTC chips.
501 This driver can also be built as a module. If so, the module
502 will be called rtc-rs5c348.
504 config RTC_DRV_DS3234
505 tristate "Maxim/Dallas DS3234"
507 If you say yes here you get support for the
508 Maxim/Dallas DS3234 SPI RTC chip.
510 This driver can also be built as a module. If so, the module
511 will be called rtc-ds3234.
513 config RTC_DRV_PCF2123
514 tristate "NXP PCF2123"
516 If you say yes here you get support for the NXP PCF2123
519 This driver can also be built as a module. If so, the module
520 will be called rtc-pcf2123.
524 comment "Platform RTC drivers"
526 # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
527 # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
528 # global rtc_lock ... it's not yet just another platform_device.
531 tristate "PC-style 'CMOS'"
532 depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
535 Say "yes" here to get direct support for the real time clock
536 found in every PC or ACPI-based system, and some other boards.
537 Specifically the original MC146818, compatibles like those in
538 PC south bridges, the DS12887 or M48T86, some multifunction
539 or LPC bus chips, and so on.
541 Your system will need to define the platform device used by
542 this driver, otherwise it won't be accessible. This means
543 you can safely enable this driver if you don't know whether
544 or not your board has this kind of hardware.
546 This driver can also be built as a module. If so, the module
547 will be called rtc-cmos.
550 tristate "Virtual RTC for Intel MID platforms"
551 depends on X86_INTEL_MID
552 default y if X86_INTEL_MID
555 Say "yes" here to get direct support for the real time clock
556 found on Moorestown platforms. The VRTC is a emulated RTC that
557 derives its clock source from a real RTC in the PMIC. The MC146818
558 style programming interface is mostly conserved, but any
559 updates are done via IPC calls to the system controller FW.
561 config RTC_DRV_DS1216
562 tristate "Dallas DS1216"
565 If you say yes here you get support for the Dallas DS1216 RTC chips.
567 config RTC_DRV_DS1286
568 tristate "Dallas DS1286"
570 If you say yes here you get support for the Dallas DS1286 RTC chips.
572 config RTC_DRV_DS1302
573 tristate "Dallas DS1302"
574 depends on SH_SECUREEDGE5410
576 If you say yes here you get support for the Dallas DS1302 RTC chips.
578 config RTC_DRV_DS1511
579 tristate "Dallas DS1511"
581 If you say yes here you get support for the
582 Dallas DS1511 timekeeping/watchdog chip.
584 This driver can also be built as a module. If so, the module
585 will be called rtc-ds1511.
587 config RTC_DRV_DS1553
588 tristate "Maxim/Dallas DS1553"
590 If you say yes here you get support for the
591 Maxim/Dallas DS1553 timekeeping chip.
593 This driver can also be built as a module. If so, the module
594 will be called rtc-ds1553.
596 config RTC_DRV_DS1742
597 tristate "Maxim/Dallas DS1742/1743"
599 If you say yes here you get support for the
600 Maxim/Dallas DS1742/1743 timekeeping chip.
602 This driver can also be built as a module. If so, the module
603 will be called rtc-ds1742.
605 config RTC_DRV_DA9052
606 tristate "Dialog DA9052/DA9053 RTC"
607 depends on PMIC_DA9052
609 Say y here to support the RTC driver for Dialog Semiconductor
610 DA9052-BC and DA9053-AA/Bx PMICs.
616 If you say yes here you will get support for the EFI
619 This driver can also be built as a module. If so, the module
620 will be called rtc-efi.
622 config RTC_DRV_STK17TA8
623 tristate "Simtek STK17TA8"
625 If you say yes here you get support for the
626 Simtek STK17TA8 timekeeping chip.
628 This driver can also be built as a module. If so, the module
629 will be called rtc-stk17ta8.
631 config RTC_DRV_M48T86
632 tristate "ST M48T86/Dallas DS12887"
634 If you say Y here you will get support for the
635 ST M48T86 and Dallas DS12887 RTC chips.
637 This driver can also be built as a module. If so, the module
638 will be called rtc-m48t86.
640 config RTC_DRV_M48T35
643 If you say Y here you will get support for the
646 This driver can also be built as a module, if so, the module
647 will be called "rtc-m48t35".
649 config RTC_DRV_M48T59
650 tristate "ST M48T59/M48T08/M48T02"
652 If you say Y here you will get support for the
653 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
655 These chips are usually found in Sun SPARC and UltraSPARC
658 This driver can also be built as a module, if so, the module
659 will be called "rtc-m48t59".
661 config RTC_DRV_MSM6242
662 tristate "Oki MSM6242"
664 If you say yes here you get support for the Oki MSM6242
665 timekeeping chip. It is used in some Amiga models (e.g. A2000).
667 This driver can also be built as a module. If so, the module
668 will be called rtc-msm6242.
670 config RTC_DRV_BQ4802
673 If you say Y here you will get support for the TI
676 This driver can also be built as a module. If so, the module
677 will be called rtc-bq4802.
679 config RTC_DRV_RP5C01
680 tristate "Ricoh RP5C01"
682 If you say yes here you get support for the Ricoh RP5C01
683 timekeeping chip. It is used in some Amiga models (e.g. A3000
686 This driver can also be built as a module. If so, the module
687 will be called rtc-rp5c01.
690 tristate "EM Microelectronic V3020"
692 If you say yes here you will get support for the
693 EM Microelectronic v3020 RTC chip.
695 This driver can also be built as a module. If so, the module
696 will be called rtc-v3020.
698 config RTC_DRV_DS2404
699 tristate "Dallas DS2404"
701 If you say yes here you get support for the
702 Dallas DS2404 RTC chip.
704 This driver can also be built as a module. If so, the module
705 will be called rtc-ds2404.
707 config RTC_DRV_WM831X
708 tristate "Wolfson Microelectronics WM831x RTC"
709 depends on MFD_WM831X
711 If you say yes here you will get support for the RTC subsystem
712 of the Wolfson Microelectronics WM831X series PMICs.
714 This driver can also be built as a module. If so, the module
715 will be called "rtc-wm831x".
717 config RTC_DRV_WM8350
718 tristate "Wolfson Microelectronics WM8350 RTC"
719 depends on MFD_WM8350
721 If you say yes here you will get support for the RTC subsystem
722 of the Wolfson Microelectronics WM8350.
724 This driver can also be built as a module. If so, the module
725 will be called "rtc-wm8350".
728 tristate "SPEAR ST RTC"
729 depends on PLAT_SPEAR
732 If you say Y here you will get support for the RTC found on
735 config RTC_DRV_PCF50633
736 depends on MFD_PCF50633
737 tristate "NXP PCF50633 RTC"
739 If you say yes here you get support for the RTC subsystem of the
740 NXP PCF50633 used in embedded systems.
742 config RTC_DRV_AB3100
743 tristate "ST-Ericsson AB3100 RTC"
744 depends on AB3100_CORE
745 default y if AB3100_CORE
747 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
748 support. This chip contains a battery- and capacitor-backed RTC.
750 config RTC_DRV_AB8500
751 tristate "ST-Ericsson AB8500 RTC"
752 depends on AB8500_CORE
754 select RTC_INTF_DEV_UIE_EMUL
756 Select this to enable the ST-Ericsson AB8500 power management IC RTC
757 support. This chip contains a battery- and capacitor-backed RTC.
759 config RTC_DRV_NUC900
760 tristate "NUC910/NUC920 RTC driver"
761 depends on ARCH_W90X900
763 If you say yes here you get support for the RTC subsystem of the
764 NUC910/NUC920 used in embedded systems.
766 comment "on-CPU RTC drivers"
768 config RTC_DRV_DAVINCI
769 tristate "TI DaVinci RTC"
770 depends on ARCH_DAVINCI_DM365
772 If you say yes here you get support for the RTC on the
773 DaVinci platforms (DM365).
775 This driver can also be built as a module. If so, the module
776 will be called rtc-davinci.
779 tristate "Freescale IMX DryIce Real Time Clock"
782 Support for Freescale IMX DryIce RTC
784 This driver can also be built as a module, if so, the module
785 will be called "rtc-imxdi".
789 depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX || SOC_AM33XX
791 Say "yes" here to support the on chip real time clock
792 present on TI OMAP1, AM33xx and DA8xx/OMAP-L13x.
794 This driver can also be built as a module, if so, module
795 will be called rtc-omap.
800 This will include RTC support for Samsung SoCs. If
801 you want to include RTC support for any machine, kindly
802 select this in the respective mach-XXXX/Kconfig file.
805 tristate "Samsung S3C series SoC RTC"
806 depends on ARCH_S3C64XX || HAVE_S3C_RTC
808 RTC (Realtime Clock) driver for the clock inbuilt into the
809 Samsung S3C24XX series of SoCs. This can provide periodic
810 interrupt rates from 1Hz to 64Hz for user programs, and
813 The driver currently supports the common features on all the
814 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
817 This driver can also be build as a module. If so, the module
818 will be called rtc-s3c.
820 config RTC_DRV_EP93XX
821 tristate "Cirrus Logic EP93XX"
822 depends on ARCH_EP93XX
824 If you say yes here you get support for the
825 RTC embedded in the Cirrus Logic EP93XX processors.
827 This driver can also be built as a module. If so, the module
828 will be called rtc-ep93xx.
830 config RTC_DRV_SA1100
831 tristate "SA11x0/PXA2xx/PXA910"
832 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
834 If you say Y here you will get access to the real time clock
835 built into your SA11x0 or PXA2xx CPU.
837 To compile this driver as a module, choose M here: the
838 module will be called rtc-sa1100.
841 tristate "SuperH On-Chip RTC"
842 depends on SUPERH && HAVE_CLK
844 Say Y here to enable support for the on-chip RTC found in
845 most SuperH processors.
847 To compile this driver as a module, choose M here: the
848 module will be called rtc-sh.
850 config RTC_DRV_VR41XX
851 tristate "NEC VR41XX"
852 depends on CPU_VR41XX
854 If you say Y here you will get access to the real time clock
855 built into your NEC VR41XX CPU.
857 To compile this driver as a module, choose M here: the
858 module will be called rtc-vr41xx.
861 tristate "ARM AMBA PL030 RTC"
864 If you say Y here you will get access to ARM AMBA
865 PrimeCell PL030 RTC found on certain ARM SOCs.
867 To compile this driver as a module, choose M here: the
868 module will be called rtc-pl030.
871 tristate "ARM AMBA PL031 RTC"
874 If you say Y here you will get access to ARM AMBA
875 PrimeCell PL031 RTC found on certain ARM SOCs.
877 To compile this driver as a module, choose M here: the
878 module will be called rtc-pl031.
880 config RTC_DRV_AT32AP700X
881 tristate "AT32AP700X series RTC"
882 depends on PLATFORM_AT32AP
884 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
885 AT32AP700x family processors.
887 config RTC_DRV_AT91RM9200
888 tristate "AT91RM9200 or some AT91SAM9 RTC"
891 Driver for the internal RTC (Realtime Clock) module found on
892 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
893 this is powered by the backup power supply.
895 config RTC_DRV_AT91SAM9
896 tristate "AT91SAM9x/AT91CAP9 RTT as RTC"
897 depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
899 RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
900 (Real Time Timer). These timers are powered by the backup power
901 supply (such as a small coin cell battery), but do not need to
904 (On AT91SAM9rl and AT91SAM9G45 chips you probably want to use the
905 dedicated RTC module and leave the RTT available for other uses.)
907 config RTC_DRV_AT91SAM9_RTT
911 prompt "RTT module Number" if ARCH_AT91SAM9263
912 depends on RTC_DRV_AT91SAM9
914 More than one RTT module is available. You can choose which
915 one will be used as an RTC. The default of zero is normally
916 OK to use, though some systems use that for non-RTC purposes.
918 config RTC_DRV_AT91SAM9_GPBR
920 range 0 3 if !ARCH_AT91SAM9263
921 range 0 15 if ARCH_AT91SAM9263
923 prompt "Backup Register Number"
924 depends on RTC_DRV_AT91SAM9
926 The RTC driver needs to use one of the General Purpose Backup
927 Registers (GPBRs) as well as the RTT. You can choose which one
928 will be used. The default of zero is normally OK to use, but
929 on some systems other software needs to use that register.
931 config RTC_DRV_AU1XXX
932 tristate "Au1xxx Counter0 RTC support"
933 depends on MIPS_ALCHEMY
935 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
936 counter) to be used as a RTC.
938 This driver can also be built as a module. If so, the module
939 will be called rtc-au1xxx.
942 tristate "Blackfin On-Chip RTC"
943 depends on BLACKFIN && !BF561
945 If you say yes here you will get support for the
946 Blackfin On-Chip Real Time Clock.
948 This driver can also be built as a module. If so, the module
949 will be called rtc-bfin.
951 config RTC_DRV_RS5C313
952 tristate "Ricoh RS5C313"
953 depends on SH_LANDISK
955 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
957 config RTC_DRV_GENERIC
958 tristate "Generic RTC support"
959 # Please consider writing a new RTC driver instead of using the generic
961 depends on PARISC || M68K || PPC || SUPERH32
963 Say Y or M here to enable RTC support on systems using the generic
964 RTC abstraction. If you do not know what you are doing, you should
968 tristate "PXA27x/PXA3xx"
971 If you say Y here you will get access to the real time clock
972 built into your PXA27x or PXA3xx CPU.
974 This RTC driver uses PXA RTC registers available since pxa27x
975 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
977 config RTC_DRV_VT8500
978 tristate "VIA/WonderMedia 85xx SoC RTC"
979 depends on ARCH_VT8500
981 If you say Y here you will get access to the real time clock
982 built into your VIA VT8500 SoC or its relatives.
986 bool "SUN4V Hypervisor RTC"
989 If you say Y here you will get support for the Hypervisor
990 based RTC on SUN4V systems.
992 config RTC_DRV_STARFIRE
996 If you say Y here you will get support for the RTC found on
999 config RTC_DRV_TX4939
1000 tristate "TX4939 SoC"
1001 depends on SOC_TX4939
1003 Driver for the internal RTC (Realtime Clock) module found on
1007 tristate "Marvell SoC RTC"
1008 depends on ARCH_KIRKWOOD || ARCH_DOVE
1010 If you say yes here you will get support for the in-chip RTC
1011 that can be found in some of Marvell's SoC devices, such as
1012 the Kirkwood 88F6281 and 88F6192.
1014 This driver can also be built as a module. If so, the module
1015 will be called rtc-mv.
1021 If you say yes here you will get support for the RTC on PS3.
1023 This driver can also be built as a module. If so, the module
1024 will be called rtc-ps3.
1026 config RTC_DRV_COH901331
1027 tristate "ST-Ericsson COH 901 331 RTC"
1028 depends on ARCH_U300
1030 If you say Y here you will get access to ST-Ericsson
1031 COH 901 331 RTC clock found in some ST-Ericsson Mobile
1034 This driver can also be built as a module. If so, the module
1035 will be called "rtc-coh901331".
1039 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1042 If you say yes here you will get support for the onboard
1043 STMP3xxx/i.MX23/i.MX28 RTC.
1045 This driver can also be built as a module. If so, the module
1046 will be called rtc-stmp3xxx.
1052 If you say Y here you will get support for the RTC found on
1053 the PCAP2 ASIC used on some Motorola phones.
1055 config RTC_DRV_MC13XXX
1056 depends on MFD_MC13XXX
1057 tristate "Freescale MC13xxx RTC"
1059 This enables support for the RTCs found on Freescale's PMICs
1060 MC13783 and MC13892.
1062 config RTC_DRV_MPC5121
1063 tristate "Freescale MPC5121 built-in RTC"
1064 depends on PPC_MPC512x || PPC_MPC52xx
1066 If you say yes here you will get support for the
1067 built-in RTC on MPC5121 or on MPC5200.
1069 This driver can also be built as a module. If so, the module
1070 will be called rtc-mpc5121.
1072 config RTC_DRV_JZ4740
1073 tristate "Ingenic JZ4740 SoC"
1074 depends on MACH_JZ4740
1076 If you say yes here you get support for the Ingenic JZ4740 SoC RTC
1079 This driver can also be buillt as a module. If so, the module
1080 will be called rtc-jz4740.
1082 config RTC_DRV_LPC32XX
1083 depends on ARCH_LPC32XX
1084 tristate "NXP LPC32XX RTC"
1086 This enables support for the NXP RTC in the LPC32XX
1088 This driver can also be buillt as a module. If so, the module
1089 will be called rtc-lpc32xx.
1091 config RTC_DRV_PM8XXX
1092 tristate "Qualcomm PMIC8XXX RTC"
1093 depends on MFD_PM8XXX
1095 If you say yes here you get support for the
1096 Qualcomm PMIC8XXX RTC.
1098 To compile this driver as a module, choose M here: the
1099 module will be called rtc-pm8xxx.
1101 config RTC_DRV_TEGRA
1102 tristate "NVIDIA Tegra Internal RTC driver"
1103 depends on ARCH_TEGRA
1105 If you say yes here you get support for the
1106 Tegra 200 series internal RTC module.
1108 This drive can also be built as a module. If so, the module
1109 will be called rtc-tegra.
1112 tristate "Tilera hypervisor RTC support"
1115 Enable support for the Linux driver side of the Tilera
1116 hypervisor's real-time clock interface.
1119 tristate "PKUnity v3 RTC support"
1120 depends on ARCH_PUV3
1122 This enables support for the RTC in the PKUnity-v3 SoCs.
1124 This drive can also be built as a module. If so, the module
1125 will be called rtc-puv3.
1127 config RTC_DRV_LOONGSON1
1128 tristate "loongson1 RTC support"
1129 depends on MACH_LOONGSON1
1131 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1132 counter) to be used as a RTC.
1134 This driver can also be built as a module. If so, the module
1135 will be called rtc-ls1x.
1138 tristate "Freescale MXC Real Time Clock"
1141 If you say yes here you get support for the Freescale MXC
1144 This driver can also be built as a module, if so, the module
1145 will be called "rtc-mxc".
1148 tristate "Freescale SNVS RTC support"
1149 depends on HAS_IOMEM
1152 If you say yes here you get support for the Freescale SNVS
1153 Low Power (LP) RTC module.
1155 This driver can also be built as a module, if so, the module
1156 will be called "rtc-snvs".