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_TPS6586X
356 tristate "TI TPS6586X RTC driver"
357 depends on MFD_TPS6586X
359 TI Power Managment IC TPS6586X supports RTC functionality
360 along with alarm. This driver supports the RTC driver for
361 the TPS6586X RTC module.
363 config RTC_DRV_TPS65910
364 tristate "TI TPS65910 RTC driver"
365 depends on RTC_CLASS && MFD_TPS65910
367 If you say yes here you get support for the RTC on the
370 This driver can also be built as a module. If so, the module
371 will be called rtc-tps65910.
373 config RTC_DRV_RC5T583
374 tristate "RICOH 5T583 RTC driver"
375 depends on MFD_RC5T583
377 If you say yes here you get support for the RTC on the
380 This driver can also be built as a module. If so, the module
381 will be called rtc-rc5t583.
383 config RTC_DRV_S35390A
384 tristate "Seiko Instruments S-35390A"
387 If you say yes here you will get support for the Seiko
388 Instruments S-35390A.
390 This driver can also be built as a module. If so the module
391 will be called rtc-s35390a.
393 config RTC_DRV_FM3130
394 tristate "Ramtron FM3130"
396 If you say Y here you will get support for the
397 Ramtron FM3130 RTC chips.
398 Ramtron FM3130 is a chip with two separate devices inside,
399 RTC clock and FRAM. This driver provides only RTC functionality.
401 This driver can also be built as a module. If so the module
402 will be called rtc-fm3130.
404 config RTC_DRV_RX8581
405 tristate "Epson RX-8581"
407 If you say yes here you will get support for the Epson RX-8581.
409 This driver can also be built as a module. If so the module
410 will be called rtc-rx8581.
412 config RTC_DRV_RX8025
413 tristate "Epson RX-8025SA/NB"
415 If you say yes here you get support for the Epson
416 RX-8025SA/NB RTC chips.
418 This driver can also be built as a module. If so, the module
419 will be called rtc-rx8025.
421 config RTC_DRV_EM3027
422 tristate "EM Microelectronic EM3027"
424 If you say yes here you get support for the EM
425 Microelectronic EM3027 RTC chips.
427 This driver can also be built as a module. If so, the module
428 will be called rtc-em3027.
430 config RTC_DRV_RV3029C2
431 tristate "Micro Crystal RTC"
433 If you say yes here you get support for the Micro Crystal
436 This driver can also be built as a module. If so, the module
437 will be called rtc-rv3029c2.
441 comment "SPI RTC drivers"
445 config RTC_DRV_M41T93
448 If you say yes here you will get support for the
449 ST M41T93 SPI RTC chip.
451 This driver can also be built as a module. If so, the module
452 will be called rtc-m41t93.
454 config RTC_DRV_M41T94
457 If you say yes here you will get support for the
458 ST M41T94 SPI RTC chip.
460 This driver can also be built as a module. If so, the module
461 will be called rtc-m41t94.
463 config RTC_DRV_DS1305
464 tristate "Dallas/Maxim DS1305/DS1306"
466 Select this driver to get support for the Dallas/Maxim DS1305
467 and DS1306 real time clock chips. These support a trickle
468 charger, alarms, and NVRAM in addition to the clock.
470 This driver can also be built as a module. If so, the module
471 will be called rtc-ds1305.
473 config RTC_DRV_DS1390
474 tristate "Dallas/Maxim DS1390/93/94"
476 If you say yes here you get support for the
477 Dallas/Maxim DS1390/93/94 chips.
479 This driver only supports the RTC feature, and not other chip
480 features such as alarms and trickle charging.
482 This driver can also be built as a module. If so, the module
483 will be called rtc-ds1390.
485 config RTC_DRV_MAX6902
486 tristate "Maxim MAX6902"
488 If you say yes here you will get support for the
489 Maxim MAX6902 SPI RTC chip.
491 This driver can also be built as a module. If so, the module
492 will be called rtc-max6902.
495 tristate "Epson RTC-9701JE"
497 If you say yes here you will get support for the
498 Epson RTC-9701JE SPI RTC chip.
500 This driver can also be built as a module. If so, the module
501 will be called rtc-r9701.
503 config RTC_DRV_RS5C348
504 tristate "Ricoh RS5C348A/B"
506 If you say yes here you get support for the
507 Ricoh RS5C348A and RS5C348B RTC chips.
509 This driver can also be built as a module. If so, the module
510 will be called rtc-rs5c348.
512 config RTC_DRV_DS3234
513 tristate "Maxim/Dallas DS3234"
515 If you say yes here you get support for the
516 Maxim/Dallas DS3234 SPI RTC chip.
518 This driver can also be built as a module. If so, the module
519 will be called rtc-ds3234.
521 config RTC_DRV_PCF2123
522 tristate "NXP PCF2123"
524 If you say yes here you get support for the NXP PCF2123
527 This driver can also be built as a module. If so, the module
528 will be called rtc-pcf2123.
532 comment "Platform RTC drivers"
534 # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
535 # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
536 # global rtc_lock ... it's not yet just another platform_device.
539 tristate "PC-style 'CMOS'"
540 depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
543 Say "yes" here to get direct support for the real time clock
544 found in every PC or ACPI-based system, and some other boards.
545 Specifically the original MC146818, compatibles like those in
546 PC south bridges, the DS12887 or M48T86, some multifunction
547 or LPC bus chips, and so on.
549 Your system will need to define the platform device used by
550 this driver, otherwise it won't be accessible. This means
551 you can safely enable this driver if you don't know whether
552 or not your board has this kind of hardware.
554 This driver can also be built as a module. If so, the module
555 will be called rtc-cmos.
558 tristate "Virtual RTC for Intel MID platforms"
559 depends on X86_INTEL_MID
560 default y if X86_INTEL_MID
563 Say "yes" here to get direct support for the real time clock
564 found on Moorestown platforms. The VRTC is a emulated RTC that
565 derives its clock source from a real RTC in the PMIC. The MC146818
566 style programming interface is mostly conserved, but any
567 updates are done via IPC calls to the system controller FW.
569 config RTC_DRV_DS1216
570 tristate "Dallas DS1216"
573 If you say yes here you get support for the Dallas DS1216 RTC chips.
575 config RTC_DRV_DS1286
576 tristate "Dallas DS1286"
578 If you say yes here you get support for the Dallas DS1286 RTC chips.
580 config RTC_DRV_DS1302
581 tristate "Dallas DS1302"
582 depends on SH_SECUREEDGE5410
584 If you say yes here you get support for the Dallas DS1302 RTC chips.
586 config RTC_DRV_DS1511
587 tristate "Dallas DS1511"
589 If you say yes here you get support for the
590 Dallas DS1511 timekeeping/watchdog chip.
592 This driver can also be built as a module. If so, the module
593 will be called rtc-ds1511.
595 config RTC_DRV_DS1553
596 tristate "Maxim/Dallas DS1553"
598 If you say yes here you get support for the
599 Maxim/Dallas DS1553 timekeeping chip.
601 This driver can also be built as a module. If so, the module
602 will be called rtc-ds1553.
604 config RTC_DRV_DS1742
605 tristate "Maxim/Dallas DS1742/1743"
607 If you say yes here you get support for the
608 Maxim/Dallas DS1742/1743 timekeeping chip.
610 This driver can also be built as a module. If so, the module
611 will be called rtc-ds1742.
613 config RTC_DRV_DA9052
614 tristate "Dialog DA9052/DA9053 RTC"
615 depends on PMIC_DA9052
617 Say y here to support the RTC driver for Dialog Semiconductor
618 DA9052-BC and DA9053-AA/Bx PMICs.
620 config RTC_DRV_DA9055
621 tristate "Dialog Semiconductor DA9055 RTC"
622 depends on MFD_DA9055
624 If you say yes here you will get support for the
625 RTC of the Dialog DA9055 PMIC.
627 This driver can also be built as a module. If so, the module
628 will be called rtc-da9055
634 If you say yes here you will get support for the EFI
637 This driver can also be built as a module. If so, the module
638 will be called rtc-efi.
640 config RTC_DRV_STK17TA8
641 tristate "Simtek STK17TA8"
643 If you say yes here you get support for the
644 Simtek STK17TA8 timekeeping chip.
646 This driver can also be built as a module. If so, the module
647 will be called rtc-stk17ta8.
649 config RTC_DRV_M48T86
650 tristate "ST M48T86/Dallas DS12887"
652 If you say Y here you will get support for the
653 ST M48T86 and Dallas DS12887 RTC chips.
655 This driver can also be built as a module. If so, the module
656 will be called rtc-m48t86.
658 config RTC_DRV_M48T35
661 If you say Y here you will get support for the
664 This driver can also be built as a module, if so, the module
665 will be called "rtc-m48t35".
667 config RTC_DRV_M48T59
668 tristate "ST M48T59/M48T08/M48T02"
670 If you say Y here you will get support for the
671 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
673 These chips are usually found in Sun SPARC and UltraSPARC
676 This driver can also be built as a module, if so, the module
677 will be called "rtc-m48t59".
679 config RTC_DRV_MSM6242
680 tristate "Oki MSM6242"
682 If you say yes here you get support for the Oki MSM6242
683 timekeeping chip. It is used in some Amiga models (e.g. A2000).
685 This driver can also be built as a module. If so, the module
686 will be called rtc-msm6242.
688 config RTC_DRV_BQ4802
691 If you say Y here you will get support for the TI
694 This driver can also be built as a module. If so, the module
695 will be called rtc-bq4802.
697 config RTC_DRV_RP5C01
698 tristate "Ricoh RP5C01"
700 If you say yes here you get support for the Ricoh RP5C01
701 timekeeping chip. It is used in some Amiga models (e.g. A3000
704 This driver can also be built as a module. If so, the module
705 will be called rtc-rp5c01.
708 tristate "EM Microelectronic V3020"
710 If you say yes here you will get support for the
711 EM Microelectronic v3020 RTC chip.
713 This driver can also be built as a module. If so, the module
714 will be called rtc-v3020.
716 config RTC_DRV_DS2404
717 tristate "Dallas DS2404"
719 If you say yes here you get support for the
720 Dallas DS2404 RTC chip.
722 This driver can also be built as a module. If so, the module
723 will be called rtc-ds2404.
725 config RTC_DRV_WM831X
726 tristate "Wolfson Microelectronics WM831x RTC"
727 depends on MFD_WM831X
729 If you say yes here you will get support for the RTC subsystem
730 of the Wolfson Microelectronics WM831X series PMICs.
732 This driver can also be built as a module. If so, the module
733 will be called "rtc-wm831x".
735 config RTC_DRV_WM8350
736 tristate "Wolfson Microelectronics WM8350 RTC"
737 depends on MFD_WM8350
739 If you say yes here you will get support for the RTC subsystem
740 of the Wolfson Microelectronics WM8350.
742 This driver can also be built as a module. If so, the module
743 will be called "rtc-wm8350".
746 tristate "SPEAR ST RTC"
747 depends on PLAT_SPEAR
750 If you say Y here you will get support for the RTC found on
753 config RTC_DRV_PCF50633
754 depends on MFD_PCF50633
755 tristate "NXP PCF50633 RTC"
757 If you say yes here you get support for the RTC subsystem of the
758 NXP PCF50633 used in embedded systems.
760 config RTC_DRV_AB3100
761 tristate "ST-Ericsson AB3100 RTC"
762 depends on AB3100_CORE
763 default y if AB3100_CORE
765 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
766 support. This chip contains a battery- and capacitor-backed RTC.
768 config RTC_DRV_AB8500
769 tristate "ST-Ericsson AB8500 RTC"
770 depends on AB8500_CORE
772 select RTC_INTF_DEV_UIE_EMUL
774 Select this to enable the ST-Ericsson AB8500 power management IC RTC
775 support. This chip contains a battery- and capacitor-backed RTC.
777 config RTC_DRV_NUC900
778 tristate "NUC910/NUC920 RTC driver"
779 depends on ARCH_W90X900
781 If you say yes here you get support for the RTC subsystem of the
782 NUC910/NUC920 used in embedded systems.
784 comment "on-CPU RTC drivers"
786 config RTC_DRV_DAVINCI
787 tristate "TI DaVinci RTC"
788 depends on ARCH_DAVINCI_DM365
790 If you say yes here you get support for the RTC on the
791 DaVinci platforms (DM365).
793 This driver can also be built as a module. If so, the module
794 will be called rtc-davinci.
797 tristate "Freescale IMX DryIce Real Time Clock"
800 Support for Freescale IMX DryIce RTC
802 This driver can also be built as a module, if so, the module
803 will be called "rtc-imxdi".
807 depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX || SOC_AM33XX
809 Say "yes" here to support the on chip real time clock
810 present on TI OMAP1, AM33xx and DA8xx/OMAP-L13x.
812 This driver can also be built as a module, if so, module
813 will be called rtc-omap.
818 This will include RTC support for Samsung SoCs. If
819 you want to include RTC support for any machine, kindly
820 select this in the respective mach-XXXX/Kconfig file.
823 tristate "Samsung S3C series SoC RTC"
824 depends on ARCH_S3C64XX || HAVE_S3C_RTC
826 RTC (Realtime Clock) driver for the clock inbuilt into the
827 Samsung S3C24XX series of SoCs. This can provide periodic
828 interrupt rates from 1Hz to 64Hz for user programs, and
831 The driver currently supports the common features on all the
832 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
835 This driver can also be build as a module. If so, the module
836 will be called rtc-s3c.
838 config RTC_DRV_EP93XX
839 tristate "Cirrus Logic EP93XX"
840 depends on ARCH_EP93XX
842 If you say yes here you get support for the
843 RTC embedded in the Cirrus Logic EP93XX processors.
845 This driver can also be built as a module. If so, the module
846 will be called rtc-ep93xx.
848 config RTC_DRV_SA1100
849 tristate "SA11x0/PXA2xx/PXA910"
850 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
852 If you say Y here you will get access to the real time clock
853 built into your SA11x0 or PXA2xx CPU.
855 To compile this driver as a module, choose M here: the
856 module will be called rtc-sa1100.
859 tristate "SuperH On-Chip RTC"
860 depends on SUPERH && HAVE_CLK
862 Say Y here to enable support for the on-chip RTC found in
863 most SuperH processors.
865 To compile this driver as a module, choose M here: the
866 module will be called rtc-sh.
868 config RTC_DRV_VR41XX
869 tristate "NEC VR41XX"
870 depends on CPU_VR41XX
872 If you say Y here you will get access to the real time clock
873 built into your NEC VR41XX CPU.
875 To compile this driver as a module, choose M here: the
876 module will be called rtc-vr41xx.
879 tristate "ARM AMBA PL030 RTC"
882 If you say Y here you will get access to ARM AMBA
883 PrimeCell PL030 RTC found on certain ARM SOCs.
885 To compile this driver as a module, choose M here: the
886 module will be called rtc-pl030.
889 tristate "ARM AMBA PL031 RTC"
892 If you say Y here you will get access to ARM AMBA
893 PrimeCell PL031 RTC found on certain ARM SOCs.
895 To compile this driver as a module, choose M here: the
896 module will be called rtc-pl031.
898 config RTC_DRV_AT32AP700X
899 tristate "AT32AP700X series RTC"
900 depends on PLATFORM_AT32AP
902 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
903 AT32AP700x family processors.
905 config RTC_DRV_AT91RM9200
906 tristate "AT91RM9200 or some AT91SAM9 RTC"
909 Driver for the internal RTC (Realtime Clock) module found on
910 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
911 this is powered by the backup power supply.
913 config RTC_DRV_AT91SAM9
914 tristate "AT91SAM9x/AT91CAP9 RTT as RTC"
915 depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
917 RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
918 (Real Time Timer). These timers are powered by the backup power
919 supply (such as a small coin cell battery), but do not need to
922 (On AT91SAM9rl and AT91SAM9G45 chips you probably want to use the
923 dedicated RTC module and leave the RTT available for other uses.)
925 config RTC_DRV_AT91SAM9_RTT
929 prompt "RTT module Number" if ARCH_AT91SAM9263
930 depends on RTC_DRV_AT91SAM9
932 More than one RTT module is available. You can choose which
933 one will be used as an RTC. The default of zero is normally
934 OK to use, though some systems use that for non-RTC purposes.
936 config RTC_DRV_AT91SAM9_GPBR
938 range 0 3 if !ARCH_AT91SAM9263
939 range 0 15 if ARCH_AT91SAM9263
941 prompt "Backup Register Number"
942 depends on RTC_DRV_AT91SAM9
944 The RTC driver needs to use one of the General Purpose Backup
945 Registers (GPBRs) as well as the RTT. You can choose which one
946 will be used. The default of zero is normally OK to use, but
947 on some systems other software needs to use that register.
949 config RTC_DRV_AU1XXX
950 tristate "Au1xxx Counter0 RTC support"
951 depends on MIPS_ALCHEMY
953 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
954 counter) to be used as a RTC.
956 This driver can also be built as a module. If so, the module
957 will be called rtc-au1xxx.
960 tristate "Blackfin On-Chip RTC"
961 depends on BLACKFIN && !BF561
963 If you say yes here you will get support for the
964 Blackfin On-Chip Real Time Clock.
966 This driver can also be built as a module. If so, the module
967 will be called rtc-bfin.
969 config RTC_DRV_RS5C313
970 tristate "Ricoh RS5C313"
971 depends on SH_LANDISK
973 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
975 config RTC_DRV_GENERIC
976 tristate "Generic RTC support"
977 # Please consider writing a new RTC driver instead of using the generic
979 depends on PARISC || M68K || PPC || SUPERH32
981 Say Y or M here to enable RTC support on systems using the generic
982 RTC abstraction. If you do not know what you are doing, you should
986 tristate "PXA27x/PXA3xx"
989 If you say Y here you will get access to the real time clock
990 built into your PXA27x or PXA3xx CPU.
992 This RTC driver uses PXA RTC registers available since pxa27x
993 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
995 config RTC_DRV_VT8500
996 tristate "VIA/WonderMedia 85xx SoC RTC"
997 depends on ARCH_VT8500
999 If you say Y here you will get access to the real time clock
1000 built into your VIA VT8500 SoC or its relatives.
1003 config RTC_DRV_SUN4V
1004 bool "SUN4V Hypervisor RTC"
1007 If you say Y here you will get support for the Hypervisor
1008 based RTC on SUN4V systems.
1010 config RTC_DRV_STARFIRE
1014 If you say Y here you will get support for the RTC found on
1017 config RTC_DRV_TX4939
1018 tristate "TX4939 SoC"
1019 depends on SOC_TX4939
1021 Driver for the internal RTC (Realtime Clock) module found on
1025 tristate "Marvell SoC RTC"
1026 depends on ARCH_KIRKWOOD || ARCH_DOVE
1028 If you say yes here you will get support for the in-chip RTC
1029 that can be found in some of Marvell's SoC devices, such as
1030 the Kirkwood 88F6281 and 88F6192.
1032 This driver can also be built as a module. If so, the module
1033 will be called rtc-mv.
1039 If you say yes here you will get support for the RTC on PS3.
1041 This driver can also be built as a module. If so, the module
1042 will be called rtc-ps3.
1044 config RTC_DRV_COH901331
1045 tristate "ST-Ericsson COH 901 331 RTC"
1046 depends on ARCH_U300
1048 If you say Y here you will get access to ST-Ericsson
1049 COH 901 331 RTC clock found in some ST-Ericsson Mobile
1052 This driver can also be built as a module. If so, the module
1053 will be called "rtc-coh901331".
1057 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1060 If you say yes here you will get support for the onboard
1061 STMP3xxx/i.MX23/i.MX28 RTC.
1063 This driver can also be built as a module. If so, the module
1064 will be called rtc-stmp3xxx.
1070 If you say Y here you will get support for the RTC found on
1071 the PCAP2 ASIC used on some Motorola phones.
1073 config RTC_DRV_MC13XXX
1074 depends on MFD_MC13XXX
1075 tristate "Freescale MC13xxx RTC"
1077 This enables support for the RTCs found on Freescale's PMICs
1078 MC13783 and MC13892.
1080 config RTC_DRV_MPC5121
1081 tristate "Freescale MPC5121 built-in RTC"
1082 depends on PPC_MPC512x || PPC_MPC52xx
1084 If you say yes here you will get support for the
1085 built-in RTC on MPC5121 or on MPC5200.
1087 This driver can also be built as a module. If so, the module
1088 will be called rtc-mpc5121.
1090 config RTC_DRV_JZ4740
1091 tristate "Ingenic JZ4740 SoC"
1092 depends on MACH_JZ4740
1094 If you say yes here you get support for the Ingenic JZ4740 SoC RTC
1097 This driver can also be buillt as a module. If so, the module
1098 will be called rtc-jz4740.
1100 config RTC_DRV_LPC32XX
1101 depends on ARCH_LPC32XX
1102 tristate "NXP LPC32XX RTC"
1104 This enables support for the NXP RTC in the LPC32XX
1106 This driver can also be buillt as a module. If so, the module
1107 will be called rtc-lpc32xx.
1109 config RTC_DRV_PM8XXX
1110 tristate "Qualcomm PMIC8XXX RTC"
1111 depends on MFD_PM8XXX
1113 If you say yes here you get support for the
1114 Qualcomm PMIC8XXX RTC.
1116 To compile this driver as a module, choose M here: the
1117 module will be called rtc-pm8xxx.
1119 config RTC_DRV_TEGRA
1120 tristate "NVIDIA Tegra Internal RTC driver"
1121 depends on ARCH_TEGRA
1123 If you say yes here you get support for the
1124 Tegra 200 series internal RTC module.
1126 This drive can also be built as a module. If so, the module
1127 will be called rtc-tegra.
1130 tristate "Tilera hypervisor RTC support"
1133 Enable support for the Linux driver side of the Tilera
1134 hypervisor's real-time clock interface.
1137 tristate "PKUnity v3 RTC support"
1138 depends on ARCH_PUV3
1140 This enables support for the RTC in the PKUnity-v3 SoCs.
1142 This drive can also be built as a module. If so, the module
1143 will be called rtc-puv3.
1145 config RTC_DRV_LOONGSON1
1146 tristate "loongson1 RTC support"
1147 depends on MACH_LOONGSON1
1149 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1150 counter) to be used as a RTC.
1152 This driver can also be built as a module. If so, the module
1153 will be called rtc-ls1x.
1156 tristate "Freescale MXC Real Time Clock"
1159 If you say yes here you get support for the Freescale MXC
1162 This driver can also be built as a module, if so, the module
1163 will be called "rtc-mxc".
1166 tristate "Freescale SNVS RTC support"
1167 depends on HAS_IOMEM
1170 If you say yes here you get support for the Freescale SNVS
1171 Low Power (LP) RTC module.
1173 This driver can also be built as a module, if so, the module
1174 will be called "rtc-snvs".