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)"
63 Say yes here if you want to use your RTCs using sysfs interfaces,
64 /sys/class/rtc/rtc0 through /sys/.../rtcN.
69 boolean "/proc/driver/rtc (procfs for rtcN)"
72 Say yes here if you want to use your system clock RTC through
73 the proc interface, /proc/driver/rtc.
74 Other RTCs will not be available through that API.
75 If there is no RTC for the system clock, then the first RTC(rtc0)
81 boolean "/dev/rtcN (character devices)"
83 Say yes here if you want to use your RTCs using the /dev
84 interfaces, which "udev" sets up as /dev/rtc0 through
87 You may want to set up a symbolic link so one of these
88 can be accessed as /dev/rtc, which is a name
89 expected by "hwclock" and some other programs. Recent
90 versions of "udev" are known to set up the symlink for you.
94 config RTC_INTF_DEV_UIE_EMUL
95 bool "RTC UIE emulation on dev interface"
96 depends on RTC_INTF_DEV
98 Provides an emulation for RTC_UIE if the underlying rtc chip
99 driver does not expose RTC_UIE ioctls. Those requests generate
100 once-per-second update interrupts, used for synchronization.
102 The emulation code will read the time from the hardware
103 clock several times per second, please enable this option
104 only if you know that you really need it.
107 tristate "Test driver/device"
109 If you say yes here you get support for the
110 RTC test driver. It's a software RTC which can be
111 used to test the RTC subsystem APIs. It gets
112 the time from the system clock.
113 You want this driver only if you are doing development
114 on the RTC subsystem. Please read the source code
117 This driver can also be built as a module. If so, the module
118 will be called rtc-test.
120 comment "I2C RTC drivers"
125 config RTC_DRV_88PM860X
126 tristate "Marvell 88PM860x"
127 depends on I2C && MFD_88PM860X
129 If you say yes here you get support for RTC function in Marvell
132 This driver can also be built as a module. If so, the module
133 will be called rtc-88pm860x.
135 config RTC_DRV_88PM80X
136 tristate "Marvell 88PM80x"
137 depends on I2C && MFD_88PM800
139 If you say yes here you get support for RTC function in Marvell
142 This driver can also be built as a module. If so, the module
143 will be called rtc-88pm80x.
145 config RTC_DRV_DS1307
146 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
148 If you say yes here you get support for various compatible RTC
149 chips (often with battery backup) connected with I2C. This driver
150 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
151 EPSON RX-8025 and probably other chips. In some cases the RTC
152 must already have been initialized (by manufacturing or a
155 The first seven registers on these chips hold an RTC, and other
156 registers may add features such as NVRAM, a trickle charger for
157 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
158 sysfs, but other chip features may not be available.
160 This driver can also be built as a module. If so, the module
161 will be called rtc-ds1307.
163 config RTC_DRV_DS1374
164 tristate "Dallas/Maxim DS1374"
167 If you say yes here you get support for Dallas Semiconductor
168 DS1374 real-time clock chips. If an interrupt is associated
169 with the device, the alarm functionality is supported.
171 This driver can also be built as a module. If so, the module
172 will be called rtc-ds1374.
174 config RTC_DRV_DS1672
175 tristate "Dallas/Maxim DS1672"
177 If you say yes here you get support for the
178 Dallas/Maxim DS1672 timekeeping chip.
180 This driver can also be built as a module. If so, the module
181 will be called rtc-ds1672.
183 config RTC_DRV_DS3232
184 tristate "Dallas/Maxim DS3232"
187 If you say yes here you get support for Dallas Semiconductor
188 DS3232 real-time clock chips. If an interrupt is associated
189 with the device, the alarm functionality is supported.
191 This driver can also be built as a module. If so, the module
192 will be called rtc-ds3232.
194 config RTC_DRV_MAX6900
195 tristate "Maxim MAX6900"
197 If you say yes here you will get support for the
198 Maxim MAX6900 I2C RTC chip.
200 This driver can also be built as a module. If so, the module
201 will be called rtc-max6900.
203 config RTC_DRV_MAX8907
204 tristate "Maxim MAX8907"
205 depends on MFD_MAX8907
207 If you say yes here you will get support for the
208 RTC of Maxim MAX8907 PMIC.
210 This driver can also be built as a module. If so, the module
211 will be called rtc-max8907.
213 config RTC_DRV_MAX8925
214 tristate "Maxim MAX8925"
215 depends on MFD_MAX8925
217 If you say yes here you will get support for the
218 RTC of Maxim MAX8925 PMIC.
220 This driver can also be built as a module. If so, the module
221 will be called rtc-max8925.
223 config RTC_DRV_MAX8998
224 tristate "Maxim MAX8998"
225 depends on MFD_MAX8998
227 If you say yes here you will get support for the
228 RTC of Maxim MAX8998 PMIC.
230 This driver can also be built as a module. If so, the module
231 will be called rtc-max8998.
233 config RTC_DRV_RS5C372
234 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
236 If you say yes here you get support for the
237 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
239 This driver can also be built as a module. If so, the module
240 will be called rtc-rs5c372.
242 config RTC_DRV_ISL1208
243 tristate "Intersil ISL1208"
245 If you say yes here you get support for the
246 Intersil ISL1208 RTC chip.
248 This driver can also be built as a module. If so, the module
249 will be called rtc-isl1208.
251 config RTC_DRV_ISL12022
252 tristate "Intersil ISL12022"
254 If you say yes here you get support for the
255 Intersil ISL12022 RTC chip.
257 This driver can also be built as a module. If so, the module
258 will be called rtc-isl12022.
261 tristate "Xicor/Intersil X1205"
263 If you say yes here you get support for the
264 Xicor/Intersil X1205 RTC chip.
266 This driver can also be built as a module. If so, the module
267 will be called rtc-x1205.
269 config RTC_DRV_PCF8563
270 tristate "Philips PCF8563/Epson RTC8564"
272 If you say yes here you get support for the
273 Philips PCF8563 RTC chip. The Epson RTC8564
276 This driver can also be built as a module. If so, the module
277 will be called rtc-pcf8563.
279 config RTC_DRV_PCF8583
280 tristate "Philips PCF8583"
282 If you say yes here you get support for the Philips PCF8583
283 RTC chip found on Acorn RiscPCs. This driver supports the
284 platform specific method of retrieving the current year from
285 the RTC's SRAM. It will work on other platforms with the same
286 chip, but the year will probably have to be tweaked.
288 This driver can also be built as a module. If so, the module
289 will be called rtc-pcf8583.
291 config RTC_DRV_M41T80
292 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
294 If you say Y here you will get support for the ST M41T60
295 and M41T80 RTC chips series. Currently, the following chips are
296 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
297 M41ST85, and M41ST87.
299 This driver can also be built as a module. If so, the module
300 will be called rtc-m41t80.
302 config RTC_DRV_M41T80_WDT
303 bool "ST M41T65/M41T80 series RTC watchdog timer"
304 depends on RTC_DRV_M41T80
306 If you say Y here you will get support for the
307 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
310 tristate "TI BQ32000"
312 If you say Y here you will get support for the TI
313 BQ32000 I2C RTC chip.
315 This driver can also be built as a module. If so, the module
316 will be called rtc-bq32k.
318 config RTC_DRV_DM355EVM
319 tristate "TI DaVinci DM355 EVM RTC"
320 depends on MFD_DM355EVM_MSP
322 Supports the RTC firmware in the MSP430 on the DM355 EVM.
324 config RTC_DRV_TWL92330
325 boolean "TI TWL92330/Menelaus"
328 If you say yes here you get support for the RTC on the
329 TWL92330 "Menelaus" power management chip, used with OMAP2
330 platforms. The support is integrated with the rest of
331 the Menelaus driver; it's not separate module.
333 config RTC_DRV_TWL4030
334 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
335 depends on TWL4030_CORE
337 If you say yes here you get support for the RTC on the
338 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
340 This driver can also be built as a module. If so, the module
341 will be called rtc-twl.
343 config RTC_DRV_TPS65910
344 tristate "TI TPS65910 RTC driver"
345 depends on RTC_CLASS && MFD_TPS65910
347 If you say yes here you get support for the RTC on the
350 This driver can also be built as a module. If so, the module
351 will be called rtc-tps65910.
353 config RTC_DRV_RC5T583
354 tristate "RICOH 5T583 RTC driver"
355 depends on MFD_RC5T583
357 If you say yes here you get support for the RTC on the
360 This driver can also be built as a module. If so, the module
361 will be called rtc-rc5t583.
363 config RTC_DRV_S35390A
364 tristate "Seiko Instruments S-35390A"
367 If you say yes here you will get support for the Seiko
368 Instruments S-35390A.
370 This driver can also be built as a module. If so the module
371 will be called rtc-s35390a.
373 config RTC_DRV_FM3130
374 tristate "Ramtron FM3130"
376 If you say Y here you will get support for the
377 Ramtron FM3130 RTC chips.
378 Ramtron FM3130 is a chip with two separate devices inside,
379 RTC clock and FRAM. This driver provides only RTC functionality.
381 This driver can also be built as a module. If so the module
382 will be called rtc-fm3130.
384 config RTC_DRV_RX8581
385 tristate "Epson RX-8581"
387 If you say yes here you will get support for the Epson RX-8581.
389 This driver can also be built as a module. If so the module
390 will be called rtc-rx8581.
392 config RTC_DRV_RX8025
393 tristate "Epson RX-8025SA/NB"
395 If you say yes here you get support for the Epson
396 RX-8025SA/NB RTC chips.
398 This driver can also be built as a module. If so, the module
399 will be called rtc-rx8025.
401 config RTC_DRV_EM3027
402 tristate "EM Microelectronic EM3027"
404 If you say yes here you get support for the EM
405 Microelectronic EM3027 RTC chips.
407 This driver can also be built as a module. If so, the module
408 will be called rtc-em3027.
410 config RTC_DRV_RV3029C2
411 tristate "Micro Crystal RTC"
413 If you say yes here you get support for the Micro Crystal
416 This driver can also be built as a module. If so, the module
417 will be called rtc-rv3029c2.
421 comment "SPI RTC drivers"
425 config RTC_DRV_M41T93
428 If you say yes here you will get support for the
429 ST M41T93 SPI RTC chip.
431 This driver can also be built as a module. If so, the module
432 will be called rtc-m41t93.
434 config RTC_DRV_M41T94
437 If you say yes here you will get support for the
438 ST M41T94 SPI RTC chip.
440 This driver can also be built as a module. If so, the module
441 will be called rtc-m41t94.
443 config RTC_DRV_DS1305
444 tristate "Dallas/Maxim DS1305/DS1306"
446 Select this driver to get support for the Dallas/Maxim DS1305
447 and DS1306 real time clock chips. These support a trickle
448 charger, alarms, and NVRAM in addition to the clock.
450 This driver can also be built as a module. If so, the module
451 will be called rtc-ds1305.
453 config RTC_DRV_DS1390
454 tristate "Dallas/Maxim DS1390/93/94"
456 If you say yes here you get support for the
457 Dallas/Maxim DS1390/93/94 chips.
459 This driver only supports the RTC feature, and not other chip
460 features such as alarms and trickle charging.
462 This driver can also be built as a module. If so, the module
463 will be called rtc-ds1390.
465 config RTC_DRV_MAX6902
466 tristate "Maxim MAX6902"
468 If you say yes here you will get support for the
469 Maxim MAX6902 SPI RTC chip.
471 This driver can also be built as a module. If so, the module
472 will be called rtc-max6902.
475 tristate "Epson RTC-9701JE"
477 If you say yes here you will get support for the
478 Epson RTC-9701JE SPI RTC chip.
480 This driver can also be built as a module. If so, the module
481 will be called rtc-r9701.
483 config RTC_DRV_RS5C348
484 tristate "Ricoh RS5C348A/B"
486 If you say yes here you get support for the
487 Ricoh RS5C348A and RS5C348B RTC chips.
489 This driver can also be built as a module. If so, the module
490 will be called rtc-rs5c348.
492 config RTC_DRV_DS3234
493 tristate "Maxim/Dallas DS3234"
495 If you say yes here you get support for the
496 Maxim/Dallas DS3234 SPI RTC chip.
498 This driver can also be built as a module. If so, the module
499 will be called rtc-ds3234.
501 config RTC_DRV_PCF2123
502 tristate "NXP PCF2123"
504 If you say yes here you get support for the NXP PCF2123
507 This driver can also be built as a module. If so, the module
508 will be called rtc-pcf2123.
512 comment "Platform RTC drivers"
514 # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
515 # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
516 # global rtc_lock ... it's not yet just another platform_device.
519 tristate "PC-style 'CMOS'"
520 depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
523 Say "yes" here to get direct support for the real time clock
524 found in every PC or ACPI-based system, and some other boards.
525 Specifically the original MC146818, compatibles like those in
526 PC south bridges, the DS12887 or M48T86, some multifunction
527 or LPC bus chips, and so on.
529 Your system will need to define the platform device used by
530 this driver, otherwise it won't be accessible. This means
531 you can safely enable this driver if you don't know whether
532 or not your board has this kind of hardware.
534 This driver can also be built as a module. If so, the module
535 will be called rtc-cmos.
538 tristate "Virtual RTC for Intel MID platforms"
539 depends on X86_INTEL_MID
540 default y if X86_INTEL_MID
543 Say "yes" here to get direct support for the real time clock
544 found on Moorestown platforms. The VRTC is a emulated RTC that
545 derives its clock source from a real RTC in the PMIC. The MC146818
546 style programming interface is mostly conserved, but any
547 updates are done via IPC calls to the system controller FW.
549 config RTC_DRV_DS1216
550 tristate "Dallas DS1216"
553 If you say yes here you get support for the Dallas DS1216 RTC chips.
555 config RTC_DRV_DS1286
556 tristate "Dallas DS1286"
558 If you say yes here you get support for the Dallas DS1286 RTC chips.
560 config RTC_DRV_DS1302
561 tristate "Dallas DS1302"
562 depends on SH_SECUREEDGE5410
564 If you say yes here you get support for the Dallas DS1302 RTC chips.
566 config RTC_DRV_DS1511
567 tristate "Dallas DS1511"
569 If you say yes here you get support for the
570 Dallas DS1511 timekeeping/watchdog chip.
572 This driver can also be built as a module. If so, the module
573 will be called rtc-ds1511.
575 config RTC_DRV_DS1553
576 tristate "Maxim/Dallas DS1553"
578 If you say yes here you get support for the
579 Maxim/Dallas DS1553 timekeeping chip.
581 This driver can also be built as a module. If so, the module
582 will be called rtc-ds1553.
584 config RTC_DRV_DS1742
585 tristate "Maxim/Dallas DS1742/1743"
587 If you say yes here you get support for the
588 Maxim/Dallas DS1742/1743 timekeeping chip.
590 This driver can also be built as a module. If so, the module
591 will be called rtc-ds1742.
593 config RTC_DRV_DA9052
594 tristate "Dialog DA9052/DA9053 RTC"
595 depends on PMIC_DA9052
597 Say y here to support the RTC driver for Dialog Semiconductor
598 DA9052-BC and DA9053-AA/Bx PMICs.
604 If you say yes here you will get support for the EFI
607 This driver can also be built as a module. If so, the module
608 will be called rtc-efi.
610 config RTC_DRV_STK17TA8
611 tristate "Simtek STK17TA8"
613 If you say yes here you get support for the
614 Simtek STK17TA8 timekeeping chip.
616 This driver can also be built as a module. If so, the module
617 will be called rtc-stk17ta8.
619 config RTC_DRV_M48T86
620 tristate "ST M48T86/Dallas DS12887"
622 If you say Y here you will get support for the
623 ST M48T86 and Dallas DS12887 RTC chips.
625 This driver can also be built as a module. If so, the module
626 will be called rtc-m48t86.
628 config RTC_DRV_M48T35
631 If you say Y here you will get support for the
634 This driver can also be built as a module, if so, the module
635 will be called "rtc-m48t35".
637 config RTC_DRV_M48T59
638 tristate "ST M48T59/M48T08/M48T02"
640 If you say Y here you will get support for the
641 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
643 These chips are usually found in Sun SPARC and UltraSPARC
646 This driver can also be built as a module, if so, the module
647 will be called "rtc-m48t59".
649 config RTC_DRV_MSM6242
650 tristate "Oki MSM6242"
652 If you say yes here you get support for the Oki MSM6242
653 timekeeping chip. It is used in some Amiga models (e.g. A2000).
655 This driver can also be built as a module. If so, the module
656 will be called rtc-msm6242.
658 config RTC_DRV_BQ4802
661 If you say Y here you will get support for the TI
664 This driver can also be built as a module. If so, the module
665 will be called rtc-bq4802.
667 config RTC_DRV_RP5C01
668 tristate "Ricoh RP5C01"
670 If you say yes here you get support for the Ricoh RP5C01
671 timekeeping chip. It is used in some Amiga models (e.g. A3000
674 This driver can also be built as a module. If so, the module
675 will be called rtc-rp5c01.
678 tristate "EM Microelectronic V3020"
680 If you say yes here you will get support for the
681 EM Microelectronic v3020 RTC chip.
683 This driver can also be built as a module. If so, the module
684 will be called rtc-v3020.
686 config RTC_DRV_DS2404
687 tristate "Dallas DS2404"
689 If you say yes here you get support for the
690 Dallas DS2404 RTC chip.
692 This driver can also be built as a module. If so, the module
693 will be called rtc-ds2404.
695 config RTC_DRV_WM831X
696 tristate "Wolfson Microelectronics WM831x RTC"
697 depends on MFD_WM831X
699 If you say yes here you will get support for the RTC subsystem
700 of the Wolfson Microelectronics WM831X series PMICs.
702 This driver can also be built as a module. If so, the module
703 will be called "rtc-wm831x".
705 config RTC_DRV_WM8350
706 tristate "Wolfson Microelectronics WM8350 RTC"
707 depends on MFD_WM8350
709 If you say yes here you will get support for the RTC subsystem
710 of the Wolfson Microelectronics WM8350.
712 This driver can also be built as a module. If so, the module
713 will be called "rtc-wm8350".
716 tristate "SPEAR ST RTC"
717 depends on PLAT_SPEAR
720 If you say Y here you will get support for the RTC found on
723 config RTC_DRV_PCF50633
724 depends on MFD_PCF50633
725 tristate "NXP PCF50633 RTC"
727 If you say yes here you get support for the RTC subsystem of the
728 NXP PCF50633 used in embedded systems.
730 config RTC_DRV_AB3100
731 tristate "ST-Ericsson AB3100 RTC"
732 depends on AB3100_CORE
733 default y if AB3100_CORE
735 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
736 support. This chip contains a battery- and capacitor-backed RTC.
738 config RTC_DRV_AB8500
739 tristate "ST-Ericsson AB8500 RTC"
740 depends on AB8500_CORE
742 select RTC_INTF_DEV_UIE_EMUL
744 Select this to enable the ST-Ericsson AB8500 power management IC RTC
745 support. This chip contains a battery- and capacitor-backed RTC.
747 config RTC_DRV_NUC900
748 tristate "NUC910/NUC920 RTC driver"
749 depends on ARCH_W90X900
751 If you say yes here you get support for the RTC subsystem of the
752 NUC910/NUC920 used in embedded systems.
754 comment "on-CPU RTC drivers"
756 config RTC_DRV_DAVINCI
757 tristate "TI DaVinci RTC"
758 depends on ARCH_DAVINCI_DM365
760 If you say yes here you get support for the RTC on the
761 DaVinci platforms (DM365).
763 This driver can also be built as a module. If so, the module
764 will be called rtc-davinci.
767 tristate "Freescale IMX DryIce Real Time Clock"
770 Support for Freescale IMX DryIce RTC
772 This driver can also be built as a module, if so, the module
773 will be called "rtc-imxdi".
777 depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX
779 Say "yes" here to support the real time clock on TI OMAP1 and
780 DA8xx/OMAP-L13x chips. This driver can also be built as a
781 module called rtc-omap.
786 This will include RTC support for Samsung SoCs. If
787 you want to include RTC support for any machine, kindly
788 select this in the respective mach-XXXX/Kconfig file.
791 tristate "Samsung S3C series SoC RTC"
792 depends on ARCH_S3C64XX || HAVE_S3C_RTC
794 RTC (Realtime Clock) driver for the clock inbuilt into the
795 Samsung S3C24XX series of SoCs. This can provide periodic
796 interrupt rates from 1Hz to 64Hz for user programs, and
799 The driver currently supports the common features on all the
800 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
803 This driver can also be build as a module. If so, the module
804 will be called rtc-s3c.
806 config RTC_DRV_EP93XX
807 tristate "Cirrus Logic EP93XX"
808 depends on ARCH_EP93XX
810 If you say yes here you get support for the
811 RTC embedded in the Cirrus Logic EP93XX processors.
813 This driver can also be built as a module. If so, the module
814 will be called rtc-ep93xx.
816 config RTC_DRV_SA1100
817 tristate "SA11x0/PXA2xx/PXA910"
818 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
820 If you say Y here you will get access to the real time clock
821 built into your SA11x0 or PXA2xx CPU.
823 To compile this driver as a module, choose M here: the
824 module will be called rtc-sa1100.
827 tristate "SuperH On-Chip RTC"
828 depends on SUPERH && HAVE_CLK
830 Say Y here to enable support for the on-chip RTC found in
831 most SuperH processors.
833 To compile this driver as a module, choose M here: the
834 module will be called rtc-sh.
836 config RTC_DRV_VR41XX
837 tristate "NEC VR41XX"
838 depends on CPU_VR41XX
840 If you say Y here you will get access to the real time clock
841 built into your NEC VR41XX CPU.
843 To compile this driver as a module, choose M here: the
844 module will be called rtc-vr41xx.
847 tristate "ARM AMBA PL030 RTC"
850 If you say Y here you will get access to ARM AMBA
851 PrimeCell PL030 RTC found on certain ARM SOCs.
853 To compile this driver as a module, choose M here: the
854 module will be called rtc-pl030.
857 tristate "ARM AMBA PL031 RTC"
860 If you say Y here you will get access to ARM AMBA
861 PrimeCell PL031 RTC found on certain ARM SOCs.
863 To compile this driver as a module, choose M here: the
864 module will be called rtc-pl031.
866 config RTC_DRV_AT32AP700X
867 tristate "AT32AP700X series RTC"
868 depends on PLATFORM_AT32AP
870 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
871 AT32AP700x family processors.
873 config RTC_DRV_AT91RM9200
874 tristate "AT91RM9200 or some AT91SAM9 RTC"
877 Driver for the internal RTC (Realtime Clock) module found on
878 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
879 this is powered by the backup power supply.
881 config RTC_DRV_AT91SAM9
882 tristate "AT91SAM9x/AT91CAP9 RTT as RTC"
883 depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
885 RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
886 (Real Time Timer). These timers are powered by the backup power
887 supply (such as a small coin cell battery), but do not need to
890 (On AT91SAM9rl and AT91SAM9G45 chips you probably want to use the
891 dedicated RTC module and leave the RTT available for other uses.)
893 config RTC_DRV_AT91SAM9_RTT
897 prompt "RTT module Number" if ARCH_AT91SAM9263
898 depends on RTC_DRV_AT91SAM9
900 More than one RTT module is available. You can choose which
901 one will be used as an RTC. The default of zero is normally
902 OK to use, though some systems use that for non-RTC purposes.
904 config RTC_DRV_AT91SAM9_GPBR
906 range 0 3 if !ARCH_AT91SAM9263
907 range 0 15 if ARCH_AT91SAM9263
909 prompt "Backup Register Number"
910 depends on RTC_DRV_AT91SAM9
912 The RTC driver needs to use one of the General Purpose Backup
913 Registers (GPBRs) as well as the RTT. You can choose which one
914 will be used. The default of zero is normally OK to use, but
915 on some systems other software needs to use that register.
917 config RTC_DRV_AU1XXX
918 tristate "Au1xxx Counter0 RTC support"
919 depends on MIPS_ALCHEMY
921 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
922 counter) to be used as a RTC.
924 This driver can also be built as a module. If so, the module
925 will be called rtc-au1xxx.
928 tristate "Blackfin On-Chip RTC"
929 depends on BLACKFIN && !BF561
931 If you say yes here you will get support for the
932 Blackfin On-Chip Real Time Clock.
934 This driver can also be built as a module. If so, the module
935 will be called rtc-bfin.
937 config RTC_DRV_RS5C313
938 tristate "Ricoh RS5C313"
939 depends on SH_LANDISK
941 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
943 config RTC_DRV_GENERIC
944 tristate "Generic RTC support"
945 # Please consider writing a new RTC driver instead of using the generic
947 depends on PARISC || M68K || PPC || SUPERH32
949 Say Y or M here to enable RTC support on systems using the generic
950 RTC abstraction. If you do not know what you are doing, you should
954 tristate "PXA27x/PXA3xx"
957 If you say Y here you will get access to the real time clock
958 built into your PXA27x or PXA3xx CPU.
960 This RTC driver uses PXA RTC registers available since pxa27x
961 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
963 config RTC_DRV_VT8500
964 tristate "VIA/WonderMedia 85xx SoC RTC"
965 depends on ARCH_VT8500
967 If you say Y here you will get access to the real time clock
968 built into your VIA VT8500 SoC or its relatives.
972 bool "SUN4V Hypervisor RTC"
975 If you say Y here you will get support for the Hypervisor
976 based RTC on SUN4V systems.
978 config RTC_DRV_STARFIRE
982 If you say Y here you will get support for the RTC found on
985 config RTC_DRV_TX4939
986 tristate "TX4939 SoC"
987 depends on SOC_TX4939
989 Driver for the internal RTC (Realtime Clock) module found on
993 tristate "Marvell SoC RTC"
994 depends on ARCH_KIRKWOOD || ARCH_DOVE
996 If you say yes here you will get support for the in-chip RTC
997 that can be found in some of Marvell's SoC devices, such as
998 the Kirkwood 88F6281 and 88F6192.
1000 This driver can also be built as a module. If so, the module
1001 will be called rtc-mv.
1007 If you say yes here you will get support for the RTC on PS3.
1009 This driver can also be built as a module. If so, the module
1010 will be called rtc-ps3.
1012 config RTC_DRV_COH901331
1013 tristate "ST-Ericsson COH 901 331 RTC"
1014 depends on ARCH_U300
1016 If you say Y here you will get access to ST-Ericsson
1017 COH 901 331 RTC clock found in some ST-Ericsson Mobile
1020 This driver can also be built as a module. If so, the module
1021 will be called "rtc-coh901331".
1025 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1028 If you say yes here you will get support for the onboard
1029 STMP3xxx/i.MX23/i.MX28 RTC.
1031 This driver can also be built as a module. If so, the module
1032 will be called rtc-stmp3xxx.
1038 If you say Y here you will get support for the RTC found on
1039 the PCAP2 ASIC used on some Motorola phones.
1041 config RTC_DRV_MC13XXX
1042 depends on MFD_MC13XXX
1043 tristate "Freescale MC13xxx RTC"
1045 This enables support for the RTCs found on Freescale's PMICs
1046 MC13783 and MC13892.
1048 config RTC_DRV_MPC5121
1049 tristate "Freescale MPC5121 built-in RTC"
1050 depends on PPC_MPC512x || PPC_MPC52xx
1052 If you say yes here you will get support for the
1053 built-in RTC on MPC5121 or on MPC5200.
1055 This driver can also be built as a module. If so, the module
1056 will be called rtc-mpc5121.
1058 config RTC_DRV_JZ4740
1059 tristate "Ingenic JZ4740 SoC"
1060 depends on MACH_JZ4740
1062 If you say yes here you get support for the Ingenic JZ4740 SoC RTC
1065 This driver can also be buillt as a module. If so, the module
1066 will be called rtc-jz4740.
1068 config RTC_DRV_LPC32XX
1069 depends on ARCH_LPC32XX
1070 tristate "NXP LPC32XX RTC"
1072 This enables support for the NXP RTC in the LPC32XX
1074 This driver can also be buillt as a module. If so, the module
1075 will be called rtc-lpc32xx.
1077 config RTC_DRV_PM8XXX
1078 tristate "Qualcomm PMIC8XXX RTC"
1079 depends on MFD_PM8XXX
1081 If you say yes here you get support for the
1082 Qualcomm PMIC8XXX RTC.
1084 To compile this driver as a module, choose M here: the
1085 module will be called rtc-pm8xxx.
1087 config RTC_DRV_TEGRA
1088 tristate "NVIDIA Tegra Internal RTC driver"
1089 depends on ARCH_TEGRA
1091 If you say yes here you get support for the
1092 Tegra 200 series internal RTC module.
1094 This drive can also be built as a module. If so, the module
1095 will be called rtc-tegra.
1098 tristate "Tilera hypervisor RTC support"
1101 Enable support for the Linux driver side of the Tilera
1102 hypervisor's real-time clock interface.
1105 tristate "PKUnity v3 RTC support"
1106 depends on ARCH_PUV3
1108 This enables support for the RTC in the PKUnity-v3 SoCs.
1110 This drive can also be built as a module. If so, the module
1111 will be called rtc-puv3.
1113 config RTC_DRV_LOONGSON1
1114 tristate "loongson1 RTC support"
1115 depends on MACH_LOONGSON1
1117 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1118 counter) to be used as a RTC.
1120 This driver can also be built as a module. If so, the module
1121 will be called rtc-ls1x.
1124 tristate "Freescale MXC Real Time Clock"
1127 If you say yes here you get support for the Freescale MXC
1130 This driver can also be built as a module, if so, the module
1131 will be called "rtc-mxc".
1134 tristate "Freescale SNVS RTC support"
1135 depends on HAS_IOMEM
1138 If you say yes here you get support for the Freescale SNVS
1139 Low Power (LP) RTC module.
1141 This driver can also be built as a module, if so, the module
1142 will be called "rtc-snvs".