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"
23 depends on !ALWAYS_USE_PERSISTENT_CLOCK
25 If you say yes here, the system time (wall clock) will be set using
26 the value read from a specified RTC device. This is useful to avoid
27 unnecessary fsck runs at boot time, and to network better.
30 bool "Set the RTC time based on NTP synchronization"
32 depends on !ALWAYS_USE_PERSISTENT_CLOCK
34 If you say yes here, the system time (wall clock) will be stored
35 in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
36 minutes if userspace reports synchronized NTP status.
38 config RTC_HCTOSYS_DEVICE
39 string "RTC used to set the system time"
40 depends on RTC_HCTOSYS = y || RTC_SYSTOHC = y
43 The RTC device that will be used to (re)initialize the system
44 clock, usually rtc0. Initialization is done when the system
45 starts up, and when it resumes from a low power state. This
46 device should record time in UTC, since the kernel won't do
49 The driver for this RTC device must be loaded before late_initcall
50 functions run, so it must usually be statically linked.
52 This clock should be battery-backed, so that it reads the correct
53 time when the system boots from a power-off state. Otherwise, your
54 system will need an external clock source (like an NTP server).
56 If the clock you specify here is not battery backed, it may still
57 be useful to reinitialize system time when resuming from system
58 sleep states. Do not specify an RTC here unless it stays powered
59 during all this system's supported sleep states.
62 bool "RTC debug support"
64 Say yes here to enable debugging support in the RTC framework
65 and individual RTC drivers.
67 comment "RTC interfaces"
70 boolean "/sys/class/rtc/rtcN (sysfs)"
74 Say yes here if you want to use your RTCs using sysfs interfaces,
75 /sys/class/rtc/rtc0 through /sys/.../rtcN.
80 boolean "/proc/driver/rtc (procfs for rtcN)"
84 Say yes here if you want to use your system clock RTC through
85 the proc interface, /proc/driver/rtc.
86 Other RTCs will not be available through that API.
87 If there is no RTC for the system clock, then the first RTC(rtc0)
93 boolean "/dev/rtcN (character devices)"
96 Say yes here if you want to use your RTCs using the /dev
97 interfaces, which "udev" sets up as /dev/rtc0 through
100 You may want to set up a symbolic link so one of these
101 can be accessed as /dev/rtc, which is a name
102 expected by "hwclock" and some other programs. Recent
103 versions of "udev" are known to set up the symlink for you.
107 config RTC_INTF_DEV_UIE_EMUL
108 bool "RTC UIE emulation on dev interface"
109 depends on RTC_INTF_DEV
111 Provides an emulation for RTC_UIE if the underlying rtc chip
112 driver does not expose RTC_UIE ioctls. Those requests generate
113 once-per-second update interrupts, used for synchronization.
115 The emulation code will read the time from the hardware
116 clock several times per second, please enable this option
117 only if you know that you really need it.
120 tristate "Test driver/device"
122 If you say yes here you get support for the
123 RTC test driver. It's a software RTC which can be
124 used to test the RTC subsystem APIs. It gets
125 the time from the system clock.
126 You want this driver only if you are doing development
127 on the RTC subsystem. Please read the source code
130 This driver can also be built as a module. If so, the module
131 will be called rtc-test.
133 comment "I2C RTC drivers"
138 config RTC_DRV_88PM860X
139 tristate "Marvell 88PM860x"
140 depends on I2C && MFD_88PM860X
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-88pm860x.
148 config RTC_DRV_88PM80X
149 tristate "Marvell 88PM80x"
150 depends on I2C && MFD_88PM800
152 If you say yes here you get support for RTC function in Marvell
155 This driver can also be built as a module. If so, the module
156 will be called rtc-88pm80x.
158 config RTC_DRV_DS1307
159 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
161 If you say yes here you get support for various compatible RTC
162 chips (often with battery backup) connected with I2C. This driver
163 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
164 EPSON RX-8025 and probably other chips. In some cases the RTC
165 must already have been initialized (by manufacturing or a
168 The first seven registers on these chips hold an RTC, and other
169 registers may add features such as NVRAM, a trickle charger for
170 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
171 sysfs, but other chip features may not be available.
173 This driver can also be built as a module. If so, the module
174 will be called rtc-ds1307.
176 config RTC_DRV_DS1374
177 tristate "Dallas/Maxim DS1374"
180 If you say yes here you get support for Dallas Semiconductor
181 DS1374 real-time clock chips. If an interrupt is associated
182 with the device, the alarm functionality is supported.
184 This driver can also be built as a module. If so, the module
185 will be called rtc-ds1374.
187 config RTC_DRV_DS1672
188 tristate "Dallas/Maxim DS1672"
190 If you say yes here you get support for the
191 Dallas/Maxim DS1672 timekeeping chip.
193 This driver can also be built as a module. If so, the module
194 will be called rtc-ds1672.
196 config RTC_DRV_DS3232
197 tristate "Dallas/Maxim DS3232"
200 If you say yes here you get support for Dallas Semiconductor
201 DS3232 real-time clock chips. If an interrupt is associated
202 with the device, the alarm functionality is supported.
204 This driver can also be built as a module. If so, the module
205 will be called rtc-ds3232.
207 config RTC_DRV_LP8788
208 tristate "TI LP8788 RTC driver"
209 depends on MFD_LP8788
211 Say Y to enable support for the LP8788 RTC/ALARM driver.
213 config RTC_DRV_MAX6900
214 tristate "Maxim MAX6900"
216 If you say yes here you will get support for the
217 Maxim MAX6900 I2C RTC chip.
219 This driver can also be built as a module. If so, the module
220 will be called rtc-max6900.
222 config RTC_DRV_MAX8907
223 tristate "Maxim MAX8907"
224 depends on MFD_MAX8907
226 If you say yes here you will get support for the
227 RTC of Maxim MAX8907 PMIC.
229 This driver can also be built as a module. If so, the module
230 will be called rtc-max8907.
232 config RTC_DRV_MAX8925
233 tristate "Maxim MAX8925"
234 depends on MFD_MAX8925
236 If you say yes here you will get support for the
237 RTC of Maxim MAX8925 PMIC.
239 This driver can also be built as a module. If so, the module
240 will be called rtc-max8925.
242 config RTC_DRV_MAX8998
243 tristate "Maxim MAX8998"
244 depends on MFD_MAX8998
246 If you say yes here you will get support for the
247 RTC of Maxim MAX8998 PMIC.
249 This driver can also be built as a module. If so, the module
250 will be called rtc-max8998.
252 config RTC_DRV_MAX8997
253 tristate "Maxim MAX8997"
254 depends on MFD_MAX8997
256 If you say yes here you will get support for the
257 RTC of Maxim MAX8997 PMIC.
259 This driver can also be built as a module. If so, the module
260 will be called rtc-max8997.
262 config RTC_DRV_MAX77686
263 tristate "Maxim MAX77686"
264 depends on MFD_MAX77686
266 If you say yes here you will get support for the
267 RTC of Maxim MAX77686 PMIC.
269 This driver can also be built as a module. If so, the module
270 will be called rtc-max77686.
272 config RTC_DRV_RS5C372
273 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
275 If you say yes here you get support for the
276 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
278 This driver can also be built as a module. If so, the module
279 will be called rtc-rs5c372.
281 config RTC_DRV_ISL1208
282 tristate "Intersil ISL1208"
284 If you say yes here you get support for the
285 Intersil ISL1208 RTC chip.
287 This driver can also be built as a module. If so, the module
288 will be called rtc-isl1208.
290 config RTC_DRV_ISL12022
291 tristate "Intersil ISL12022"
293 If you say yes here you get support for the
294 Intersil ISL12022 RTC chip.
296 This driver can also be built as a module. If so, the module
297 will be called rtc-isl12022.
300 tristate "Xicor/Intersil X1205"
302 If you say yes here you get support for the
303 Xicor/Intersil X1205 RTC chip.
305 This driver can also be built as a module. If so, the module
306 will be called rtc-x1205.
308 config RTC_DRV_PALMAS
309 tristate "TI Palmas RTC driver"
310 depends on MFD_PALMAS
312 If you say yes here you get support for the RTC of TI PALMA series PMIC
315 This driver can also be built as a module. If so, the module
316 will be called rtc-palma.
318 config RTC_DRV_PCF8523
319 tristate "NXP PCF8523"
321 If you say yes here you get support for the NXP PCF8523 RTC
324 This driver can also be built as a module. If so, the module
325 will be called rtc-pcf8523.
327 config RTC_DRV_PCF8563
328 tristate "Philips PCF8563/Epson RTC8564"
330 If you say yes here you get support for the
331 Philips PCF8563 RTC chip. The Epson RTC8564
334 This driver can also be built as a module. If so, the module
335 will be called rtc-pcf8563.
337 config RTC_DRV_PCF8583
338 tristate "Philips PCF8583"
340 If you say yes here you get support for the Philips PCF8583
341 RTC chip found on Acorn RiscPCs. This driver supports the
342 platform specific method of retrieving the current year from
343 the RTC's SRAM. It will work on other platforms with the same
344 chip, but the year will probably have to be tweaked.
346 This driver can also be built as a module. If so, the module
347 will be called rtc-pcf8583.
349 config RTC_DRV_M41T80
350 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
352 If you say Y here you will get support for the ST M41T60
353 and M41T80 RTC chips series. Currently, the following chips are
354 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
355 M41ST85, and M41ST87.
357 This driver can also be built as a module. If so, the module
358 will be called rtc-m41t80.
360 config RTC_DRV_M41T80_WDT
361 bool "ST M41T65/M41T80 series RTC watchdog timer"
362 depends on RTC_DRV_M41T80
364 If you say Y here you will get support for the
365 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
368 tristate "TI BQ32000"
370 If you say Y here you will get support for the TI
371 BQ32000 I2C RTC chip.
373 This driver can also be built as a module. If so, the module
374 will be called rtc-bq32k.
376 config RTC_DRV_DM355EVM
377 tristate "TI DaVinci DM355 EVM RTC"
378 depends on MFD_DM355EVM_MSP
380 Supports the RTC firmware in the MSP430 on the DM355 EVM.
382 config RTC_DRV_TWL92330
383 boolean "TI TWL92330/Menelaus"
386 If you say yes here you get support for the RTC on the
387 TWL92330 "Menelaus" power management chip, used with OMAP2
388 platforms. The support is integrated with the rest of
389 the Menelaus driver; it's not separate module.
391 config RTC_DRV_TWL4030
392 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
393 depends on TWL4030_CORE
395 If you say yes here you get support for the RTC on the
396 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
398 This driver can also be built as a module. If so, the module
399 will be called rtc-twl.
401 config RTC_DRV_TPS6586X
402 tristate "TI TPS6586X RTC driver"
403 depends on MFD_TPS6586X
405 TI Power Management IC TPS6586X supports RTC functionality
406 along with alarm. This driver supports the RTC driver for
407 the TPS6586X RTC module.
409 config RTC_DRV_TPS65910
410 tristate "TI TPS65910 RTC driver"
411 depends on RTC_CLASS && MFD_TPS65910
413 If you say yes here you get support for the RTC on the
416 This driver can also be built as a module. If so, the module
417 will be called rtc-tps65910.
419 config RTC_DRV_TPS80031
420 tristate "TI TPS80031/TPS80032 RTC driver"
421 depends on MFD_TPS80031
423 TI Power Management IC TPS80031 supports RTC functionality
424 along with alarm. This driver supports the RTC driver for
425 the TPS80031 RTC module.
427 config RTC_DRV_RC5T583
428 tristate "RICOH 5T583 RTC driver"
429 depends on MFD_RC5T583
431 If you say yes here you get support for the RTC on the
434 This driver can also be built as a module. If so, the module
435 will be called rtc-rc5t583.
437 config RTC_DRV_S35390A
438 tristate "Seiko Instruments S-35390A"
441 If you say yes here you will get support for the Seiko
442 Instruments S-35390A.
444 This driver can also be built as a module. If so the module
445 will be called rtc-s35390a.
447 config RTC_DRV_FM3130
448 tristate "Ramtron FM3130"
450 If you say Y here you will get support for the
451 Ramtron FM3130 RTC chips.
452 Ramtron FM3130 is a chip with two separate devices inside,
453 RTC clock and FRAM. This driver provides only RTC functionality.
455 This driver can also be built as a module. If so the module
456 will be called rtc-fm3130.
458 config RTC_DRV_RX8581
459 tristate "Epson RX-8581"
461 If you say yes here you will get support for the Epson RX-8581.
463 This driver can also be built as a module. If so the module
464 will be called rtc-rx8581.
466 config RTC_DRV_RX8025
467 tristate "Epson RX-8025SA/NB"
469 If you say yes here you get support for the Epson
470 RX-8025SA/NB RTC chips.
472 This driver can also be built as a module. If so, the module
473 will be called rtc-rx8025.
475 config RTC_DRV_EM3027
476 tristate "EM Microelectronic EM3027"
478 If you say yes here you get support for the EM
479 Microelectronic EM3027 RTC chips.
481 This driver can also be built as a module. If so, the module
482 will be called rtc-em3027.
484 config RTC_DRV_RV3029C2
485 tristate "Micro Crystal RTC"
487 If you say yes here you get support for the Micro Crystal
490 This driver can also be built as a module. If so, the module
491 will be called rtc-rv3029c2.
495 comment "SPI RTC drivers"
499 config RTC_DRV_M41T93
502 If you say yes here you will get support for the
503 ST M41T93 SPI RTC chip.
505 This driver can also be built as a module. If so, the module
506 will be called rtc-m41t93.
508 config RTC_DRV_M41T94
511 If you say yes here you will get support for the
512 ST M41T94 SPI RTC chip.
514 This driver can also be built as a module. If so, the module
515 will be called rtc-m41t94.
517 config RTC_DRV_DS1305
518 tristate "Dallas/Maxim DS1305/DS1306"
520 Select this driver to get support for the Dallas/Maxim DS1305
521 and DS1306 real time clock chips. These support a trickle
522 charger, alarms, and NVRAM in addition to the clock.
524 This driver can also be built as a module. If so, the module
525 will be called rtc-ds1305.
527 config RTC_DRV_DS1390
528 tristate "Dallas/Maxim DS1390/93/94"
530 If you say yes here you get support for the
531 Dallas/Maxim DS1390/93/94 chips.
533 This driver only supports the RTC feature, and not other chip
534 features such as alarms and trickle charging.
536 This driver can also be built as a module. If so, the module
537 will be called rtc-ds1390.
539 config RTC_DRV_MAX6902
540 tristate "Maxim MAX6902"
542 If you say yes here you will get support for the
543 Maxim MAX6902 SPI RTC chip.
545 This driver can also be built as a module. If so, the module
546 will be called rtc-max6902.
549 tristate "Epson RTC-9701JE"
551 If you say yes here you will get support for the
552 Epson RTC-9701JE SPI RTC chip.
554 This driver can also be built as a module. If so, the module
555 will be called rtc-r9701.
557 config RTC_DRV_RS5C348
558 tristate "Ricoh RS5C348A/B"
560 If you say yes here you get support for the
561 Ricoh RS5C348A and RS5C348B RTC chips.
563 This driver can also be built as a module. If so, the module
564 will be called rtc-rs5c348.
566 config RTC_DRV_DS3234
567 tristate "Maxim/Dallas DS3234"
569 If you say yes here you get support for the
570 Maxim/Dallas DS3234 SPI RTC chip.
572 This driver can also be built as a module. If so, the module
573 will be called rtc-ds3234.
575 config RTC_DRV_PCF2123
576 tristate "NXP PCF2123"
578 If you say yes here you get support for the NXP PCF2123
581 This driver can also be built as a module. If so, the module
582 will be called rtc-pcf2123.
584 config RTC_DRV_RX4581
585 tristate "Epson RX-4581"
587 If you say yes here you will get support for the Epson RX-4581.
589 This driver can also be built as a module. If so the module
590 will be called rtc-rx4581.
594 comment "Platform RTC drivers"
596 # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
597 # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
598 # global rtc_lock ... it's not yet just another platform_device.
601 tristate "PC-style 'CMOS'"
602 depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
605 Say "yes" here to get direct support for the real time clock
606 found in every PC or ACPI-based system, and some other boards.
607 Specifically the original MC146818, compatibles like those in
608 PC south bridges, the DS12887 or M48T86, some multifunction
609 or LPC bus chips, and so on.
611 Your system will need to define the platform device used by
612 this driver, otherwise it won't be accessible. This means
613 you can safely enable this driver if you don't know whether
614 or not your board has this kind of hardware.
616 This driver can also be built as a module. If so, the module
617 will be called rtc-cmos.
620 tristate "Virtual RTC for Intel MID platforms"
621 depends on X86_INTEL_MID
622 default y if X86_INTEL_MID
625 Say "yes" here to get direct support for the real time clock
626 found on Moorestown platforms. The VRTC is a emulated RTC that
627 derives its clock source from a real RTC in the PMIC. The MC146818
628 style programming interface is mostly conserved, but any
629 updates are done via IPC calls to the system controller FW.
631 config RTC_DRV_DS1216
632 tristate "Dallas DS1216"
635 If you say yes here you get support for the Dallas DS1216 RTC chips.
637 config RTC_DRV_DS1286
638 tristate "Dallas DS1286"
640 If you say yes here you get support for the Dallas DS1286 RTC chips.
642 config RTC_DRV_DS1302
643 tristate "Dallas DS1302"
644 depends on SH_SECUREEDGE5410
646 If you say yes here you get support for the Dallas DS1302 RTC chips.
648 config RTC_DRV_DS1511
649 tristate "Dallas DS1511"
651 If you say yes here you get support for the
652 Dallas DS1511 timekeeping/watchdog chip.
654 This driver can also be built as a module. If so, the module
655 will be called rtc-ds1511.
657 config RTC_DRV_DS1553
658 tristate "Maxim/Dallas DS1553"
660 If you say yes here you get support for the
661 Maxim/Dallas DS1553 timekeeping chip.
663 This driver can also be built as a module. If so, the module
664 will be called rtc-ds1553.
666 config RTC_DRV_DS1742
667 tristate "Maxim/Dallas DS1742/1743"
669 If you say yes here you get support for the
670 Maxim/Dallas DS1742/1743 timekeeping chip.
672 This driver can also be built as a module. If so, the module
673 will be called rtc-ds1742.
675 config RTC_DRV_DA9052
676 tristate "Dialog DA9052/DA9053 RTC"
677 depends on PMIC_DA9052
679 Say y here to support the RTC driver for Dialog Semiconductor
680 DA9052-BC and DA9053-AA/Bx PMICs.
682 config RTC_DRV_DA9055
683 tristate "Dialog Semiconductor DA9055 RTC"
684 depends on MFD_DA9055
686 If you say yes here you will get support for the
687 RTC of the Dialog DA9055 PMIC.
689 This driver can also be built as a module. If so, the module
690 will be called rtc-da9055
696 If you say yes here you will get support for the EFI
699 This driver can also be built as a module. If so, the module
700 will be called rtc-efi.
702 config RTC_DRV_STK17TA8
703 tristate "Simtek STK17TA8"
705 If you say yes here you get support for the
706 Simtek STK17TA8 timekeeping chip.
708 This driver can also be built as a module. If so, the module
709 will be called rtc-stk17ta8.
711 config RTC_DRV_M48T86
712 tristate "ST M48T86/Dallas DS12887"
714 If you say Y here you will get support for the
715 ST M48T86 and Dallas DS12887 RTC chips.
717 This driver can also be built as a module. If so, the module
718 will be called rtc-m48t86.
720 config RTC_DRV_M48T35
723 If you say Y here you will get support for the
726 This driver can also be built as a module, if so, the module
727 will be called "rtc-m48t35".
729 config RTC_DRV_M48T59
730 tristate "ST M48T59/M48T08/M48T02"
732 If you say Y here you will get support for the
733 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
735 These chips are usually found in Sun SPARC and UltraSPARC
738 This driver can also be built as a module, if so, the module
739 will be called "rtc-m48t59".
741 config RTC_DRV_MSM6242
742 tristate "Oki MSM6242"
744 If you say yes here you get support for the Oki MSM6242
745 timekeeping chip. It is used in some Amiga models (e.g. A2000).
747 This driver can also be built as a module. If so, the module
748 will be called rtc-msm6242.
750 config RTC_DRV_BQ4802
753 If you say Y here you will get support for the TI
756 This driver can also be built as a module. If so, the module
757 will be called rtc-bq4802.
759 config RTC_DRV_RP5C01
760 tristate "Ricoh RP5C01"
762 If you say yes here you get support for the Ricoh RP5C01
763 timekeeping chip. It is used in some Amiga models (e.g. A3000
766 This driver can also be built as a module. If so, the module
767 will be called rtc-rp5c01.
770 tristate "EM Microelectronic V3020"
772 If you say yes here you will get support for the
773 EM Microelectronic v3020 RTC chip.
775 This driver can also be built as a module. If so, the module
776 will be called rtc-v3020.
778 config RTC_DRV_DS2404
779 tristate "Dallas DS2404"
781 If you say yes here you get support for the
782 Dallas DS2404 RTC chip.
784 This driver can also be built as a module. If so, the module
785 will be called rtc-ds2404.
787 config RTC_DRV_WM831X
788 tristate "Wolfson Microelectronics WM831x RTC"
789 depends on MFD_WM831X
791 If you say yes here you will get support for the RTC subsystem
792 of the Wolfson Microelectronics WM831X series PMICs.
794 This driver can also be built as a module. If so, the module
795 will be called "rtc-wm831x".
797 config RTC_DRV_WM8350
798 tristate "Wolfson Microelectronics WM8350 RTC"
799 depends on MFD_WM8350
801 If you say yes here you will get support for the RTC subsystem
802 of the Wolfson Microelectronics WM8350.
804 This driver can also be built as a module. If so, the module
805 will be called "rtc-wm8350".
808 tristate "SPEAR ST RTC"
809 depends on PLAT_SPEAR
812 If you say Y here you will get support for the RTC found on
815 config RTC_DRV_PCF50633
816 depends on MFD_PCF50633
817 tristate "NXP PCF50633 RTC"
819 If you say yes here you get support for the RTC subsystem of the
820 NXP PCF50633 used in embedded systems.
822 config RTC_DRV_AB3100
823 tristate "ST-Ericsson AB3100 RTC"
824 depends on AB3100_CORE
825 default y if AB3100_CORE
827 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
828 support. This chip contains a battery- and capacitor-backed RTC.
830 config RTC_DRV_AB8500
831 tristate "ST-Ericsson AB8500 RTC"
832 depends on AB8500_CORE
834 select RTC_INTF_DEV_UIE_EMUL
836 Select this to enable the ST-Ericsson AB8500 power management IC RTC
837 support. This chip contains a battery- and capacitor-backed RTC.
839 config RTC_DRV_NUC900
840 tristate "NUC910/NUC920 RTC driver"
841 depends on ARCH_W90X900
843 If you say yes here you get support for the RTC subsystem of the
844 NUC910/NUC920 used in embedded systems.
846 comment "on-CPU RTC drivers"
848 config RTC_DRV_DAVINCI
849 tristate "TI DaVinci RTC"
850 depends on ARCH_DAVINCI_DM365
852 If you say yes here you get support for the RTC on the
853 DaVinci platforms (DM365).
855 This driver can also be built as a module. If so, the module
856 will be called rtc-davinci.
859 tristate "Freescale IMX DryIce Real Time Clock"
862 Support for Freescale IMX DryIce RTC
864 This driver can also be built as a module, if so, the module
865 will be called "rtc-imxdi".
869 depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX || SOC_AM33XX
871 Say "yes" here to support the on chip real time clock
872 present on TI OMAP1, AM33xx and DA8xx/OMAP-L13x.
874 This driver can also be built as a module, if so, module
875 will be called rtc-omap.
880 This will include RTC support for Samsung SoCs. If
881 you want to include RTC support for any machine, kindly
882 select this in the respective mach-XXXX/Kconfig file.
885 tristate "Samsung S3C series SoC RTC"
886 depends on ARCH_S3C64XX || HAVE_S3C_RTC
888 RTC (Realtime Clock) driver for the clock inbuilt into the
889 Samsung S3C24XX series of SoCs. This can provide periodic
890 interrupt rates from 1Hz to 64Hz for user programs, and
893 The driver currently supports the common features on all the
894 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
897 This driver can also be build as a module. If so, the module
898 will be called rtc-s3c.
900 config RTC_DRV_EP93XX
901 tristate "Cirrus Logic EP93XX"
902 depends on ARCH_EP93XX
904 If you say yes here you get support for the
905 RTC embedded in the Cirrus Logic EP93XX processors.
907 This driver can also be built as a module. If so, the module
908 will be called rtc-ep93xx.
910 config RTC_DRV_SA1100
911 tristate "SA11x0/PXA2xx/PXA910"
912 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
914 If you say Y here you will get access to the real time clock
915 built into your SA11x0 or PXA2xx CPU.
917 To compile this driver as a module, choose M here: the
918 module will be called rtc-sa1100.
921 tristate "SuperH On-Chip RTC"
922 depends on SUPERH && HAVE_CLK
924 Say Y here to enable support for the on-chip RTC found in
925 most SuperH processors.
927 To compile this driver as a module, choose M here: the
928 module will be called rtc-sh.
930 config RTC_DRV_VR41XX
931 tristate "NEC VR41XX"
932 depends on CPU_VR41XX
934 If you say Y here you will get access to the real time clock
935 built into your NEC VR41XX CPU.
937 To compile this driver as a module, choose M here: the
938 module will be called rtc-vr41xx.
941 tristate "ARM AMBA PL030 RTC"
944 If you say Y here you will get access to ARM AMBA
945 PrimeCell PL030 RTC found on certain ARM SOCs.
947 To compile this driver as a module, choose M here: the
948 module will be called rtc-pl030.
951 tristate "ARM AMBA PL031 RTC"
954 If you say Y here you will get access to ARM AMBA
955 PrimeCell PL031 RTC found on certain ARM SOCs.
957 To compile this driver as a module, choose M here: the
958 module will be called rtc-pl031.
960 config RTC_DRV_AT32AP700X
961 tristate "AT32AP700X series RTC"
962 depends on PLATFORM_AT32AP
964 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
965 AT32AP700x family processors.
967 config RTC_DRV_AT91RM9200
968 tristate "AT91RM9200 or some AT91SAM9 RTC"
971 Driver for the internal RTC (Realtime Clock) module found on
972 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
973 this is powered by the backup power supply.
975 config RTC_DRV_AT91SAM9
976 tristate "AT91SAM9x/AT91CAP9 RTT as RTC"
977 depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
979 RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
980 (Real Time Timer). These timers are powered by the backup power
981 supply (such as a small coin cell battery), but do not need to
984 (On AT91SAM9rl and AT91SAM9G45 chips you probably want to use the
985 dedicated RTC module and leave the RTT available for other uses.)
987 config RTC_DRV_AT91SAM9_RTT
991 prompt "RTT module Number" if ARCH_AT91SAM9263
992 depends on RTC_DRV_AT91SAM9
994 More than one RTT module is available. You can choose which
995 one will be used as an RTC. The default of zero is normally
996 OK to use, though some systems use that for non-RTC purposes.
998 config RTC_DRV_AT91SAM9_GPBR
1000 range 0 3 if !ARCH_AT91SAM9263
1001 range 0 15 if ARCH_AT91SAM9263
1003 prompt "Backup Register Number"
1004 depends on RTC_DRV_AT91SAM9
1006 The RTC driver needs to use one of the General Purpose Backup
1007 Registers (GPBRs) as well as the RTT. You can choose which one
1008 will be used. The default of zero is normally OK to use, but
1009 on some systems other software needs to use that register.
1011 config RTC_DRV_AU1XXX
1012 tristate "Au1xxx Counter0 RTC support"
1013 depends on MIPS_ALCHEMY
1015 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1016 counter) to be used as a RTC.
1018 This driver can also be built as a module. If so, the module
1019 will be called rtc-au1xxx.
1022 tristate "Blackfin On-Chip RTC"
1023 depends on BLACKFIN && !BF561
1025 If you say yes here you will get support for the
1026 Blackfin On-Chip Real Time Clock.
1028 This driver can also be built as a module. If so, the module
1029 will be called rtc-bfin.
1031 config RTC_DRV_RS5C313
1032 tristate "Ricoh RS5C313"
1033 depends on SH_LANDISK
1035 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1037 config RTC_DRV_GENERIC
1038 tristate "Generic RTC support"
1039 # Please consider writing a new RTC driver instead of using the generic
1041 depends on PARISC || M68K || PPC || SUPERH32
1043 Say Y or M here to enable RTC support on systems using the generic
1044 RTC abstraction. If you do not know what you are doing, you should
1048 tristate "PXA27x/PXA3xx"
1051 If you say Y here you will get access to the real time clock
1052 built into your PXA27x or PXA3xx CPU.
1054 This RTC driver uses PXA RTC registers available since pxa27x
1055 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1057 config RTC_DRV_VT8500
1058 tristate "VIA/WonderMedia 85xx SoC RTC"
1059 depends on ARCH_VT8500
1061 If you say Y here you will get access to the real time clock
1062 built into your VIA VT8500 SoC or its relatives.
1065 config RTC_DRV_SUN4V
1066 bool "SUN4V Hypervisor RTC"
1069 If you say Y here you will get support for the Hypervisor
1070 based RTC on SUN4V systems.
1072 config RTC_DRV_STARFIRE
1076 If you say Y here you will get support for the RTC found on
1079 config RTC_DRV_TX4939
1080 tristate "TX4939 SoC"
1081 depends on SOC_TX4939
1083 Driver for the internal RTC (Realtime Clock) module found on
1087 tristate "Marvell SoC RTC"
1088 depends on ARCH_KIRKWOOD || ARCH_DOVE || ARCH_MVEBU
1090 If you say yes here you will get support for the in-chip RTC
1091 that can be found in some of Marvell's SoC devices, such as
1092 the Kirkwood 88F6281 and 88F6192.
1094 This driver can also be built as a module. If so, the module
1095 will be called rtc-mv.
1101 If you say yes here you will get support for the RTC on PS3.
1103 This driver can also be built as a module. If so, the module
1104 will be called rtc-ps3.
1106 config RTC_DRV_COH901331
1107 tristate "ST-Ericsson COH 901 331 RTC"
1108 depends on ARCH_U300
1110 If you say Y here you will get access to ST-Ericsson
1111 COH 901 331 RTC clock found in some ST-Ericsson Mobile
1114 This driver can also be built as a module. If so, the module
1115 will be called "rtc-coh901331".
1119 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1122 If you say yes here you will get support for the onboard
1123 STMP3xxx/i.MX23/i.MX28 RTC.
1125 This driver can also be built as a module. If so, the module
1126 will be called rtc-stmp3xxx.
1132 If you say Y here you will get support for the RTC found on
1133 the PCAP2 ASIC used on some Motorola phones.
1135 config RTC_DRV_MC13XXX
1136 depends on MFD_MC13XXX
1137 tristate "Freescale MC13xxx RTC"
1139 This enables support for the RTCs found on Freescale's PMICs
1140 MC13783 and MC13892.
1142 config RTC_DRV_MPC5121
1143 tristate "Freescale MPC5121 built-in RTC"
1144 depends on PPC_MPC512x || PPC_MPC52xx
1146 If you say yes here you will get support for the
1147 built-in RTC on MPC5121 or on MPC5200.
1149 This driver can also be built as a module. If so, the module
1150 will be called rtc-mpc5121.
1152 config RTC_DRV_JZ4740
1153 tristate "Ingenic JZ4740 SoC"
1154 depends on MACH_JZ4740
1156 If you say yes here you get support for the Ingenic JZ4740 SoC RTC
1159 This driver can also be buillt as a module. If so, the module
1160 will be called rtc-jz4740.
1162 config RTC_DRV_LPC32XX
1163 depends on ARCH_LPC32XX
1164 tristate "NXP LPC32XX RTC"
1166 This enables support for the NXP RTC in the LPC32XX
1168 This driver can also be buillt as a module. If so, the module
1169 will be called rtc-lpc32xx.
1171 config RTC_DRV_PM8XXX
1172 tristate "Qualcomm PMIC8XXX RTC"
1173 depends on MFD_PM8XXX
1175 If you say yes here you get support for the
1176 Qualcomm PMIC8XXX RTC.
1178 To compile this driver as a module, choose M here: the
1179 module will be called rtc-pm8xxx.
1181 config RTC_DRV_TEGRA
1182 tristate "NVIDIA Tegra Internal RTC driver"
1183 depends on ARCH_TEGRA
1185 If you say yes here you get support for the
1186 Tegra 200 series internal RTC module.
1188 This drive can also be built as a module. If so, the module
1189 will be called rtc-tegra.
1192 tristate "Tilera hypervisor RTC support"
1195 Enable support for the Linux driver side of the Tilera
1196 hypervisor's real-time clock interface.
1199 tristate "PKUnity v3 RTC support"
1200 depends on ARCH_PUV3
1202 This enables support for the RTC in the PKUnity-v3 SoCs.
1204 This drive can also be built as a module. If so, the module
1205 will be called rtc-puv3.
1207 config RTC_DRV_LOONGSON1
1208 tristate "loongson1 RTC support"
1209 depends on MACH_LOONGSON1
1211 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1212 counter) to be used as a RTC.
1214 This driver can also be built as a module. If so, the module
1215 will be called rtc-ls1x.
1218 tristate "Freescale MXC Real Time Clock"
1221 If you say yes here you get support for the Freescale MXC
1224 This driver can also be built as a module, if so, the module
1225 will be called "rtc-mxc".
1228 tristate "Freescale SNVS RTC support"
1229 depends on HAS_IOMEM
1232 If you say yes here you get support for the Freescale SNVS
1233 Low Power (LP) RTC module.
1235 This driver can also be built as a module, if so, the module
1236 will be called "rtc-snvs".
1238 comment "HID Sensor RTC drivers"
1240 config RTC_DRV_HID_SENSOR_TIME
1241 tristate "HID Sensor Time"
1244 select HID_SENSOR_HUB
1245 select HID_SENSOR_IIO_COMMON
1247 Say yes here to build support for the HID Sensors of type Time.
1248 This drivers makes such sensors available as RTCs.
1250 If this driver is compiled as a module, it will be named
1251 rtc-hid-sensor-time.