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Linux/drivers/rtc/Kconfig

  1 #
  2 # RTC class/drivers configuration
  3 #
  4 
  5 config RTC_LIB
  6         bool
  7 
  8 menuconfig RTC_CLASS
  9         bool "Real Time Clock"
 10         default n
 11         depends on !S390 && !UML
 12         select RTC_LIB
 13         help
 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.
 17 
 18 if RTC_CLASS
 19 
 20 config RTC_HCTOSYS
 21         bool "Set system time from RTC on startup and resume"
 22         default y
 23         help
 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.
 27 
 28 config RTC_HCTOSYS_DEVICE
 29         string "RTC used to set the system time"
 30         depends on RTC_HCTOSYS
 31         default "rtc0"
 32         help
 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
 37           timezone correction.
 38 
 39           The driver for this RTC device must be loaded before late_initcall
 40           functions run, so it must usually be statically linked.
 41 
 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).
 45 
 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.
 50 
 51 config RTC_SYSTOHC
 52         bool "Set the RTC time based on NTP synchronization"
 53         default y
 54         help
 55           If you say yes here, the system time (wall clock) will be stored
 56           in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
 57           minutes if userspace reports synchronized NTP status.
 58 
 59 config RTC_SYSTOHC_DEVICE
 60         string "RTC used to synchronize NTP adjustment"
 61         depends on RTC_SYSTOHC
 62         default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
 63         default "rtc0"
 64         help
 65           The RTC device used for NTP synchronization. The main difference
 66           between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this
 67           one can sleep when setting time, because it runs in the workqueue
 68           context.
 69 
 70 config RTC_DEBUG
 71         bool "RTC debug support"
 72         help
 73           Say yes here to enable debugging support in the RTC framework
 74           and individual RTC drivers.
 75 
 76 comment "RTC interfaces"
 77 
 78 config RTC_INTF_SYSFS
 79         bool "/sys/class/rtc/rtcN (sysfs)"
 80         depends on SYSFS
 81         default RTC_CLASS
 82         help
 83           Say yes here if you want to use your RTCs using sysfs interfaces,
 84           /sys/class/rtc/rtc0 through /sys/.../rtcN.
 85 
 86           If unsure, say Y.
 87 
 88 config RTC_INTF_PROC
 89         bool "/proc/driver/rtc (procfs for rtcN)"
 90         depends on PROC_FS
 91         default RTC_CLASS
 92         help
 93           Say yes here if you want to use your system clock RTC through
 94           the proc interface, /proc/driver/rtc.
 95           Other RTCs will not be available through that API.
 96           If there is no RTC for the system clock, then the first RTC(rtc0)
 97           is used by default.
 98 
 99           If unsure, say Y.
100 
101 config RTC_INTF_DEV
102         bool "/dev/rtcN (character devices)"
103         default RTC_CLASS
104         help
105           Say yes here if you want to use your RTCs using the /dev
106           interfaces, which "udev" sets up as /dev/rtc0 through
107           /dev/rtcN.
108 
109           You may want to set up a symbolic link so one of these
110           can be accessed as /dev/rtc, which is a name
111           expected by "hwclock" and some other programs. Recent
112           versions of "udev" are known to set up the symlink for you.
113 
114           If unsure, say Y.
115 
116 config RTC_INTF_DEV_UIE_EMUL
117         bool "RTC UIE emulation on dev interface"
118         depends on RTC_INTF_DEV
119         help
120           Provides an emulation for RTC_UIE if the underlying rtc chip
121           driver does not expose RTC_UIE ioctls. Those requests generate
122           once-per-second update interrupts, used for synchronization.
123 
124           The emulation code will read the time from the hardware
125           clock several times per second, please enable this option
126           only if you know that you really need it.
127 
128 config RTC_DRV_TEST
129         tristate "Test driver/device"
130         help
131           If you say yes here you get support for the
132           RTC test driver. It's a software RTC which can be
133           used to test the RTC subsystem APIs. It gets
134           the time from the system clock.
135           You want this driver only if you are doing development
136           on the RTC subsystem. Please read the source code
137           for further details.
138 
139           This driver can also be built as a module. If so, the module
140           will be called rtc-test.
141 
142 comment "I2C RTC drivers"
143 
144 if I2C
145 
146 config RTC_DRV_88PM860X
147         tristate "Marvell 88PM860x"
148         depends on MFD_88PM860X
149         help
150           If you say yes here you get support for RTC function in Marvell
151           88PM860x chips.
152 
153           This driver can also be built as a module. If so, the module
154           will be called rtc-88pm860x.
155 
156 config RTC_DRV_88PM80X
157         tristate "Marvell 88PM80x"
158         depends on MFD_88PM800
159         help
160           If you say yes here you get support for RTC function in Marvell
161           88PM80x chips.
162 
163           This driver can also be built as a module. If so, the module
164           will be called rtc-88pm80x.
165 
166 config RTC_DRV_ABB5ZES3
167         select REGMAP_I2C
168         tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
169         help
170           If you say yes here you get support for the Abracon
171           AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
172 
173           This driver can also be built as a module. If so, the module
174           will be called rtc-ab-b5ze-s3.
175 
176 config RTC_DRV_ABX80X
177         tristate "Abracon ABx80x"
178         help
179           If you say yes here you get support for Abracon AB080X and AB180X
180           families of ultra-low-power  battery- and capacitor-backed real-time
181           clock chips.
182 
183           This driver can also be built as a module. If so, the module
184           will be called rtc-abx80x.
185 
186 config RTC_DRV_AS3722
187         tristate "ams AS3722 RTC driver"
188         depends on MFD_AS3722
189         help
190           If you say yes here you get support for the RTC of ams AS3722 PMIC
191           chips.
192 
193           This driver can also be built as a module. If so, the module
194           will be called rtc-as3722.
195 
196 config RTC_DRV_DS1307
197         tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
198         help
199           If you say yes here you get support for various compatible RTC
200           chips (often with battery backup) connected with I2C. This driver
201           should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
202           EPSON RX-8025 and probably other chips. In some cases the RTC
203           must already have been initialized (by manufacturing or a
204           bootloader).
205 
206           The first seven registers on these chips hold an RTC, and other
207           registers may add features such as NVRAM, a trickle charger for
208           the RTC/NVRAM backup power, and alarms. NVRAM is visible in
209           sysfs, but other chip features may not be available.
210 
211           This driver can also be built as a module. If so, the module
212           will be called rtc-ds1307.
213 
214 config RTC_DRV_DS1307_HWMON
215         bool "HWMON support for rtc-ds1307"
216         depends on RTC_DRV_DS1307 && HWMON
217         depends on !(RTC_DRV_DS1307=y && HWMON=m)
218         default y
219         help
220           Say Y here if you want to expose temperature sensor data on
221           rtc-ds1307 (only DS3231)
222 
223 config RTC_DRV_DS1374
224         tristate "Dallas/Maxim DS1374"
225         help
226           If you say yes here you get support for Dallas Semiconductor
227           DS1374 real-time clock chips. If an interrupt is associated
228           with the device, the alarm functionality is supported.
229 
230           This driver can also be built as a module. If so, the module
231           will be called rtc-ds1374.
232 
233 config RTC_DRV_DS1374_WDT
234         bool "Dallas/Maxim DS1374 watchdog timer"
235         depends on RTC_DRV_DS1374
236         help
237           If you say Y here you will get support for the
238           watchdog timer in the Dallas Semiconductor DS1374
239           real-time clock chips.
240 
241 config RTC_DRV_DS1672
242         tristate "Dallas/Maxim DS1672"
243         help
244           If you say yes here you get support for the
245           Dallas/Maxim DS1672 timekeeping chip.
246 
247           This driver can also be built as a module. If so, the module
248           will be called rtc-ds1672.
249 
250 config RTC_DRV_HYM8563
251         tristate "Haoyu Microelectronics HYM8563"
252         depends on OF
253         help
254           Say Y to enable support for the HYM8563 I2C RTC chip. Apart
255           from the usual rtc functions it provides a clock output of
256           up to 32kHz.
257 
258           This driver can also be built as a module. If so, the module
259           will be called rtc-hym8563.
260 
261 config RTC_DRV_LP8788
262         tristate "TI LP8788 RTC driver"
263         depends on MFD_LP8788
264         help
265           Say Y to enable support for the LP8788 RTC/ALARM driver.
266 
267 config RTC_DRV_MAX6900
268         tristate "Maxim MAX6900"
269         help
270           If you say yes here you will get support for the
271           Maxim MAX6900 I2C RTC chip.
272 
273           This driver can also be built as a module. If so, the module
274           will be called rtc-max6900.
275 
276 config RTC_DRV_MAX8907
277         tristate "Maxim MAX8907"
278         depends on MFD_MAX8907
279         help
280           If you say yes here you will get support for the
281           RTC of Maxim MAX8907 PMIC.
282 
283           This driver can also be built as a module. If so, the module
284           will be called rtc-max8907.
285 
286 config RTC_DRV_MAX8925
287         tristate "Maxim MAX8925"
288         depends on MFD_MAX8925
289         help
290           If you say yes here you will get support for the
291           RTC of Maxim MAX8925 PMIC.
292 
293           This driver can also be built as a module. If so, the module
294           will be called rtc-max8925.
295 
296 config RTC_DRV_MAX8998
297         tristate "Maxim MAX8998"
298         depends on MFD_MAX8998
299         help
300           If you say yes here you will get support for the
301           RTC of Maxim MAX8998 PMIC.
302 
303           This driver can also be built as a module. If so, the module
304           will be called rtc-max8998.
305 
306 config RTC_DRV_MAX8997
307         tristate "Maxim MAX8997"
308         depends on MFD_MAX8997
309         help
310           If you say yes here you will get support for the
311           RTC of Maxim MAX8997 PMIC.
312 
313           This driver can also be built as a module. If so, the module
314           will be called rtc-max8997.
315 
316 config RTC_DRV_MAX77686
317         tristate "Maxim MAX77686"
318         depends on MFD_MAX77686 || MFD_MAX77620
319         help
320           If you say yes here you will get support for the
321           RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
322 
323           This driver can also be built as a module. If so, the module
324           will be called rtc-max77686.
325 
326 config RTC_DRV_RK808
327         tristate "Rockchip RK808 RTC"
328         depends on MFD_RK808
329         help
330           If you say yes here you will get support for the
331           RTC of RK808 PMIC.
332 
333           This driver can also be built as a module. If so, the module
334           will be called rk808-rtc.
335 
336 config RTC_DRV_RS5C372
337         tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
338         help
339           If you say yes here you get support for the
340           Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
341 
342           This driver can also be built as a module. If so, the module
343           will be called rtc-rs5c372.
344 
345 config RTC_DRV_ISL1208
346         tristate "Intersil ISL1208"
347         help
348           If you say yes here you get support for the
349           Intersil ISL1208 RTC chip.
350 
351           This driver can also be built as a module. If so, the module
352           will be called rtc-isl1208.
353 
354 config RTC_DRV_ISL12022
355         tristate "Intersil ISL12022"
356         help
357           If you say yes here you get support for the
358           Intersil ISL12022 RTC chip.
359 
360           This driver can also be built as a module. If so, the module
361           will be called rtc-isl12022.
362 
363 config RTC_DRV_ISL12057
364         select REGMAP_I2C
365         tristate "Intersil ISL12057"
366         help
367           If you say yes here you get support for the Intersil ISL12057
368           I2C RTC chip.
369 
370           This driver can also be built as a module. If so, the module
371           will be called rtc-isl12057.
372 
373 config RTC_DRV_X1205
374         tristate "Xicor/Intersil X1205"
375         help
376           If you say yes here you get support for the
377           Xicor/Intersil X1205 RTC chip.
378 
379           This driver can also be built as a module. If so, the module
380           will be called rtc-x1205.
381 
382 config RTC_DRV_PCF8523
383         tristate "NXP PCF8523"
384         help
385           If you say yes here you get support for the NXP PCF8523 RTC
386           chips.
387 
388           This driver can also be built as a module. If so, the module
389           will be called rtc-pcf8523.
390 
391 config RTC_DRV_PCF85063
392         tristate "NXP PCF85063"
393         help
394           If you say yes here you get support for the PCF85063 RTC chip
395 
396           This driver can also be built as a module. If so, the module
397           will be called rtc-pcf85063.
398 
399 config RTC_DRV_PCF8563
400         tristate "Philips PCF8563/Epson RTC8564"
401         help
402           If you say yes here you get support for the
403           Philips PCF8563 RTC chip. The Epson RTC8564
404           should work as well.
405 
406           This driver can also be built as a module. If so, the module
407           will be called rtc-pcf8563.
408 
409 config RTC_DRV_PCF8583
410         tristate "Philips PCF8583"
411         help
412           If you say yes here you get support for the Philips PCF8583
413           RTC chip found on Acorn RiscPCs. This driver supports the
414           platform specific method of retrieving the current year from
415           the RTC's SRAM. It will work on other platforms with the same
416           chip, but the year will probably have to be tweaked.
417 
418           This driver can also be built as a module. If so, the module
419           will be called rtc-pcf8583.
420 
421 config RTC_DRV_M41T80
422         tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
423         help
424           If you say Y here you will get support for the ST M41T60
425           and M41T80 RTC chips series. Currently, the following chips are
426           supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
427           M41ST85, M41ST87, and MicroCrystal RV4162.
428 
429           This driver can also be built as a module. If so, the module
430           will be called rtc-m41t80.
431 
432 config RTC_DRV_M41T80_WDT
433         bool "ST M41T65/M41T80 series RTC watchdog timer"
434         depends on RTC_DRV_M41T80
435         help
436           If you say Y here you will get support for the
437           watchdog timer in the ST M41T60 and M41T80 RTC chips series.
438 
439 config RTC_DRV_BQ32K
440         tristate "TI BQ32000"
441         help
442           If you say Y here you will get support for the TI
443           BQ32000 I2C RTC chip.
444 
445           This driver can also be built as a module. If so, the module
446           will be called rtc-bq32k.
447 
448 config RTC_DRV_DM355EVM
449         tristate "TI DaVinci DM355 EVM RTC"
450         depends on MFD_DM355EVM_MSP
451         help
452           Supports the RTC firmware in the MSP430 on the DM355 EVM.
453 
454 config RTC_DRV_TWL92330
455         bool "TI TWL92330/Menelaus"
456         depends on MENELAUS
457         help
458           If you say yes here you get support for the RTC on the
459           TWL92330 "Menelaus" power management chip, used with OMAP2
460           platforms. The support is integrated with the rest of
461           the Menelaus driver; it's not separate module.
462 
463 config RTC_DRV_TWL4030
464         tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
465         depends on TWL4030_CORE
466         help
467           If you say yes here you get support for the RTC on the
468           TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
469 
470           This driver can also be built as a module. If so, the module
471           will be called rtc-twl.
472 
473 config RTC_DRV_PALMAS
474         tristate "TI Palmas RTC driver"
475         depends on MFD_PALMAS
476         help
477           If you say yes here you get support for the RTC of TI PALMA series PMIC
478           chips.
479 
480           This driver can also be built as a module. If so, the module
481           will be called rtc-palma.
482 
483 config RTC_DRV_TPS6586X
484         tristate "TI TPS6586X RTC driver"
485         depends on MFD_TPS6586X
486         help
487           TI Power Management IC TPS6586X supports RTC functionality
488           along with alarm. This driver supports the RTC driver for
489           the TPS6586X RTC module.
490 
491 config RTC_DRV_TPS65910
492         tristate "TI TPS65910 RTC driver"
493         depends on RTC_CLASS && MFD_TPS65910
494         help
495           If you say yes here you get support for the RTC on the
496           TPS65910 chips.
497 
498           This driver can also be built as a module. If so, the module
499           will be called rtc-tps65910.
500 
501 config RTC_DRV_TPS80031
502         tristate "TI TPS80031/TPS80032 RTC driver"
503         depends on MFD_TPS80031
504         help
505           TI Power Management IC TPS80031 supports RTC functionality
506           along with alarm. This driver supports the RTC driver for
507           the TPS80031 RTC module.
508 
509 config RTC_DRV_RC5T583
510         tristate "RICOH 5T583 RTC driver"
511         depends on MFD_RC5T583
512         help
513           If you say yes here you get support for the RTC on the
514           RICOH 5T583 chips.
515 
516           This driver can also be built as a module. If so, the module
517           will be called rtc-rc5t583.
518 
519 config RTC_DRV_S35390A
520         tristate "Seiko Instruments S-35390A"
521         select BITREVERSE
522         help
523           If you say yes here you will get support for the Seiko
524           Instruments S-35390A.
525 
526           This driver can also be built as a module. If so the module
527           will be called rtc-s35390a.
528 
529 config RTC_DRV_FM3130
530         tristate "Ramtron FM3130"
531         help
532           If you say Y here you will get support for the
533           Ramtron FM3130 RTC chips.
534           Ramtron FM3130 is a chip with two separate devices inside,
535           RTC clock and FRAM. This driver provides only RTC functionality.
536 
537           This driver can also be built as a module. If so the module
538           will be called rtc-fm3130.
539 
540 config RTC_DRV_RX8010
541         tristate "Epson RX8010SJ"
542         depends on I2C
543         help
544           If you say yes here you get support for the Epson RX8010SJ RTC
545           chip.
546 
547           This driver can also be built as a module. If so, the module
548           will be called rtc-rx8010.
549 
550 config RTC_DRV_RX8581
551         tristate "Epson RX-8581"
552         help
553           If you say yes here you will get support for the Epson RX-8581.
554 
555           This driver can also be built as a module. If so the module
556           will be called rtc-rx8581.
557 
558 config RTC_DRV_RX8025
559         tristate "Epson RX-8025SA/NB"
560         help
561           If you say yes here you get support for the Epson
562           RX-8025SA/NB RTC chips.
563 
564           This driver can also be built as a module. If so, the module
565           will be called rtc-rx8025.
566 
567 config RTC_DRV_EM3027
568         tristate "EM Microelectronic EM3027"
569         help
570           If you say yes here you get support for the EM
571           Microelectronic EM3027 RTC chips.
572 
573           This driver can also be built as a module. If so, the module
574           will be called rtc-em3027.
575 
576 config RTC_DRV_RV3029C2
577         tristate "Micro Crystal RV3029"
578         help
579           If you say yes here you get support for the Micro Crystal
580           RV3029 RTC chips.
581 
582           This driver can also be built as a module. If so, the module
583           will be called rtc-rv3029c2.
584 
585 config RTC_DRV_RV3029_HWMON
586         bool "HWMON support for RV3029"
587         depends on RTC_DRV_RV3029C2 && HWMON
588         depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
589         default y
590         help
591           Say Y here if you want to expose temperature sensor data on
592           rtc-rv3029.
593 
594 config RTC_DRV_RV8803
595         tristate "Micro Crystal RV8803"
596         help
597           If you say yes here you get support for the Micro Crystal
598           RV8803 RTC chips.
599 
600           This driver can also be built as a module. If so, the module
601           will be called rtc-rv8803.
602 
603 config RTC_DRV_S5M
604         tristate "Samsung S2M/S5M series"
605         depends on MFD_SEC_CORE
606         help
607           If you say yes here you will get support for the
608           RTC of Samsung S2MPS14 and S5M PMIC series.
609 
610           This driver can also be built as a module. If so, the module
611           will be called rtc-s5m.
612 
613 endif # I2C
614 
615 comment "SPI RTC drivers"
616 
617 if SPI_MASTER
618 
619 config RTC_DRV_M41T93
620         tristate "ST M41T93"
621         help
622           If you say yes here you will get support for the
623           ST M41T93 SPI RTC chip.
624 
625           This driver can also be built as a module. If so, the module
626           will be called rtc-m41t93.
627 
628 config RTC_DRV_M41T94
629         tristate "ST M41T94"
630         help
631           If you say yes here you will get support for the
632           ST M41T94 SPI RTC chip.
633 
634           This driver can also be built as a module. If so, the module
635           will be called rtc-m41t94.
636 
637 config RTC_DRV_DS1305
638         tristate "Dallas/Maxim DS1305/DS1306"
639         help
640           Select this driver to get support for the Dallas/Maxim DS1305
641           and DS1306 real time clock chips. These support a trickle
642           charger, alarms, and NVRAM in addition to the clock.
643 
644           This driver can also be built as a module. If so, the module
645           will be called rtc-ds1305.
646 
647 config RTC_DRV_DS1343
648         select REGMAP_SPI
649         tristate "Dallas/Maxim DS1343/DS1344"
650         help
651           If you say yes here you get support for the
652           Dallas/Maxim DS1343 and DS1344 real time clock chips.
653           Support for trickle charger, alarm is provided.
654 
655           This driver can also be built as a module. If so, the module
656           will be called rtc-ds1343.
657 
658 config RTC_DRV_DS1347
659         tristate "Dallas/Maxim DS1347"
660         help
661           If you say yes here you get support for the
662           Dallas/Maxim DS1347 chips.
663 
664           This driver only supports the RTC feature, and not other chip
665           features such as alarms.
666 
667           This driver can also be built as a module. If so, the module
668           will be called rtc-ds1347.
669 
670 config RTC_DRV_DS1390
671         tristate "Dallas/Maxim DS1390/93/94"
672         help
673           If you say yes here you get support for the
674           Dallas/Maxim DS1390/93/94 chips.
675 
676           This driver supports the RTC feature and trickle charging but not
677           other chip features such as alarms.
678 
679           This driver can also be built as a module. If so, the module
680           will be called rtc-ds1390.
681 
682 config RTC_DRV_R9701
683         tristate "Epson RTC-9701JE"
684         help
685           If you say yes here you will get support for the
686           Epson RTC-9701JE SPI RTC chip.
687 
688           This driver can also be built as a module. If so, the module
689           will be called rtc-r9701.
690 
691 config RTC_DRV_RX4581
692         tristate "Epson RX-4581"
693         help
694           If you say yes here you will get support for the Epson RX-4581.
695 
696           This driver can also be built as a module. If so the module
697           will be called rtc-rx4581.
698 
699 config RTC_DRV_RX6110
700         tristate "Epson RX-6110"
701         select REGMAP_SPI
702         help
703           If you say yes here you will get support for the Epson RX-6610.
704 
705           This driver can also be built as a module. If so the module
706           will be called rtc-rx6110.
707 
708 config RTC_DRV_RS5C348
709         tristate "Ricoh RS5C348A/B"
710         help
711           If you say yes here you get support for the
712           Ricoh RS5C348A and RS5C348B RTC chips.
713 
714           This driver can also be built as a module. If so, the module
715           will be called rtc-rs5c348.
716 
717 config RTC_DRV_MAX6902
718         tristate "Maxim MAX6902"
719         help
720           If you say yes here you will get support for the
721           Maxim MAX6902 SPI RTC chip.
722 
723           This driver can also be built as a module. If so, the module
724           will be called rtc-max6902.
725 
726 config RTC_DRV_PCF2123
727         tristate "NXP PCF2123"
728         help
729           If you say yes here you get support for the NXP PCF2123
730           RTC chip.
731 
732           This driver can also be built as a module. If so, the module
733           will be called rtc-pcf2123.
734 
735 config RTC_DRV_MCP795
736         tristate "Microchip MCP795"
737         help
738           If you say yes here you will get support for the Microchip MCP795.
739 
740           This driver can also be built as a module. If so the module
741           will be called rtc-mcp795.
742 
743 endif # SPI_MASTER
744 
745 #
746 # Helper to resolve issues with configs that have SPI enabled but I2C
747 # modular.  See SND_SOC_I2C_AND_SPI for more information
748 #
749 config RTC_I2C_AND_SPI
750         tristate
751         default m if I2C=m
752         default y if I2C=y
753         default y if SPI_MASTER=y
754         select REGMAP_I2C if I2C
755         select REGMAP_SPI if SPI_MASTER
756 
757 comment "SPI and I2C RTC drivers"
758 
759 config RTC_DRV_DS3232
760         tristate "Dallas/Maxim DS3232/DS3234"
761         depends on RTC_I2C_AND_SPI
762         help
763           If you say yes here you get support for Dallas Semiconductor
764           DS3232 and DS3234 real-time clock chips. If an interrupt is associated
765           with the device, the alarm functionality is supported.
766 
767           This driver can also be built as a module.  If so, the module
768           will be called rtc-ds3232.
769 
770 config RTC_DRV_PCF2127
771         tristate "NXP PCF2127"
772         depends on RTC_I2C_AND_SPI
773         help
774           If you say yes here you get support for the NXP PCF2127/29 RTC
775           chips.
776 
777           This driver can also be built as a module. If so, the module
778           will be called rtc-pcf2127.
779 
780 comment "Platform RTC drivers"
781 
782 # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
783 # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
784 # global rtc_lock ... it's not yet just another platform_device.
785 
786 config RTC_DRV_CMOS
787         tristate "PC-style 'CMOS'"
788         depends on X86 || ARM || M32R || PPC || MIPS || SPARC64
789         default y if X86
790         help
791           Say "yes" here to get direct support for the real time clock
792           found in every PC or ACPI-based system, and some other boards.
793           Specifically the original MC146818, compatibles like those in
794           PC south bridges, the DS12887 or M48T86, some multifunction
795           or LPC bus chips, and so on.
796 
797           Your system will need to define the platform device used by
798           this driver, otherwise it won't be accessible. This means
799           you can safely enable this driver if you don't know whether
800           or not your board has this kind of hardware.
801 
802           This driver can also be built as a module. If so, the module
803           will be called rtc-cmos.
804 
805 config RTC_DRV_ALPHA
806         bool "Alpha PC-style CMOS"
807         depends on ALPHA
808         default y
809         help
810           Direct support for the real-time clock found on every Alpha
811           system, specifically MC146818 compatibles.  If in doubt, say Y.
812 
813 config RTC_DRV_VRTC
814         tristate "Virtual RTC for Intel MID platforms"
815         depends on X86_INTEL_MID
816         default y if X86_INTEL_MID
817 
818         help
819         Say "yes" here to get direct support for the real time clock
820         found on Moorestown platforms. The VRTC is a emulated RTC that
821         derives its clock source from a real RTC in the PMIC. The MC146818
822         style programming interface is mostly conserved, but any
823         updates are done via IPC calls to the system controller FW.
824 
825 config RTC_DRV_DS1216
826         tristate "Dallas DS1216"
827         depends on SNI_RM
828         help
829           If you say yes here you get support for the Dallas DS1216 RTC chips.
830 
831 config RTC_DRV_DS1286
832         tristate "Dallas DS1286"
833         depends on HAS_IOMEM
834         help
835           If you say yes here you get support for the Dallas DS1286 RTC chips.
836 
837 config RTC_DRV_DS1302
838         tristate "Dallas DS1302"
839         depends on SH_SECUREEDGE5410
840         help
841           If you say yes here you get support for the Dallas DS1302 RTC chips.
842 
843 config RTC_DRV_DS1511
844         tristate "Dallas DS1511"
845         depends on HAS_IOMEM
846         help
847           If you say yes here you get support for the
848           Dallas DS1511 timekeeping/watchdog chip.
849 
850           This driver can also be built as a module. If so, the module
851           will be called rtc-ds1511.
852 
853 config RTC_DRV_DS1553
854         tristate "Maxim/Dallas DS1553"
855         depends on HAS_IOMEM
856         help
857           If you say yes here you get support for the
858           Maxim/Dallas DS1553 timekeeping chip.
859 
860           This driver can also be built as a module. If so, the module
861           will be called rtc-ds1553.
862 
863 config RTC_DRV_DS1685_FAMILY
864         tristate "Dallas/Maxim DS1685 Family"
865         help
866           If you say yes here you get support for the Dallas/Maxim DS1685
867           family of real time chips.  This family includes the DS1685/DS1687,
868           DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
869           DS17885/DS17887 chips.
870 
871           This driver can also be built as a module. If so, the module
872           will be called rtc-ds1685.
873 
874 choice
875         prompt "Subtype"
876         depends on RTC_DRV_DS1685_FAMILY
877         default RTC_DRV_DS1685
878 
879 config RTC_DRV_DS1685
880         bool "DS1685/DS1687"
881         help
882           This enables support for the Dallas/Maxim DS1685/DS1687 real time
883           clock chip.
884 
885           This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
886           systems, as well as EPPC-405-UC modules by electronic system design
887           GmbH.
888 
889 config RTC_DRV_DS1689
890         bool "DS1689/DS1693"
891         help
892           This enables support for the Dallas/Maxim DS1689/DS1693 real time
893           clock chip.
894 
895           This is an older RTC chip, supplanted by the DS1685/DS1687 above,
896           which supports a few minor features such as Vcc, Vbat, and Power
897           Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
898 
899           It also works for the even older DS1688/DS1691 RTC chips, which are
900           virtually the same and carry the same model number.  Both chips
901           have 114 bytes of user NVRAM.
902 
903 config RTC_DRV_DS17285
904         bool "DS17285/DS17287"
905         help
906           This enables support for the Dallas/Maxim DS17285/DS17287 real time
907           clock chip.
908 
909           This chip features 2kb of extended NV-SRAM.  It may possibly be
910           found in some SGI O2 systems (rare).
911 
912 config RTC_DRV_DS17485
913         bool "DS17485/DS17487"
914         help
915           This enables support for the Dallas/Maxim DS17485/DS17487 real time
916           clock chip.
917 
918           This chip features 4kb of extended NV-SRAM.
919 
920 config RTC_DRV_DS17885
921         bool "DS17885/DS17887"
922         help
923           This enables support for the Dallas/Maxim DS17885/DS17887 real time
924           clock chip.
925 
926           This chip features 8kb of extended NV-SRAM.
927 
928 endchoice
929 
930 config RTC_DS1685_PROC_REGS
931         bool "Display register values in /proc"
932         depends on RTC_DRV_DS1685_FAMILY && PROC_FS
933         help
934           Enable this to display a readout of all of the RTC registers in
935           /proc/drivers/rtc.  Keep in mind that this can potentially lead
936           to lost interrupts, as reading Control Register C will clear
937           all pending IRQ flags.
938 
939           Unless you are debugging this driver, choose N.
940 
941 config RTC_DS1685_SYSFS_REGS
942         bool "SysFS access to RTC register bits"
943         depends on RTC_DRV_DS1685_FAMILY && SYSFS
944         help
945           Enable this to provide access to the RTC control register bits
946           in /sys.  Some of the bits are read-write, others are read-only.
947 
948           Keep in mind that reading Control C's bits automatically clears
949           all pending IRQ flags - this can cause lost interrupts.
950 
951           If you know that you need access to these bits, choose Y, Else N.
952 
953 config RTC_DRV_DS1742
954         tristate "Maxim/Dallas DS1742/1743"
955         depends on HAS_IOMEM
956         help
957           If you say yes here you get support for the
958           Maxim/Dallas DS1742/1743 timekeeping chip.
959 
960           This driver can also be built as a module. If so, the module
961           will be called rtc-ds1742.
962 
963 config RTC_DRV_DS2404
964         tristate "Maxim/Dallas DS2404"
965         help
966           If you say yes here you get support for the
967           Dallas DS2404 RTC chip.
968 
969           This driver can also be built as a module. If so, the module
970           will be called rtc-ds2404.
971 
972 config RTC_DRV_DA9052
973         tristate "Dialog DA9052/DA9053 RTC"
974         depends on PMIC_DA9052
975         help
976           Say y here to support the RTC driver for Dialog Semiconductor
977           DA9052-BC and DA9053-AA/Bx PMICs.
978 
979 config RTC_DRV_DA9055
980         tristate "Dialog Semiconductor DA9055 RTC"
981         depends on MFD_DA9055
982         help
983           If you say yes here you will get support for the
984           RTC of the Dialog DA9055 PMIC.
985 
986           This driver can also be built as a module. If so, the module
987           will be called rtc-da9055
988 
989 config RTC_DRV_DA9063
990         tristate "Dialog Semiconductor DA9063/DA9062 RTC"
991         depends on MFD_DA9063 || MFD_DA9062
992         help
993           If you say yes here you will get support for the RTC subsystem
994           for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
995 
996           This driver can also be built as a module. If so, the module
997           will be called "rtc-da9063".
998 
999 config RTC_DRV_EFI
1000         tristate "EFI RTC"
1001         depends on EFI && !X86
1002         help
1003           If you say yes here you will get support for the EFI
1004           Real Time Clock.
1005 
1006           This driver can also be built as a module. If so, the module
1007           will be called rtc-efi.
1008 
1009 config RTC_DRV_STK17TA8
1010         tristate "Simtek STK17TA8"
1011         depends on HAS_IOMEM
1012         help
1013           If you say yes here you get support for the
1014           Simtek STK17TA8 timekeeping chip.
1015 
1016           This driver can also be built as a module. If so, the module
1017           will be called rtc-stk17ta8.
1018 
1019 config RTC_DRV_M48T86
1020         tristate "ST M48T86/Dallas DS12887"
1021         help
1022           If you say Y here you will get support for the
1023           ST M48T86 and Dallas DS12887 RTC chips.
1024 
1025           This driver can also be built as a module. If so, the module
1026           will be called rtc-m48t86.
1027 
1028 config RTC_DRV_M48T35
1029         tristate "ST M48T35"
1030         depends on HAS_IOMEM
1031         help
1032           If you say Y here you will get support for the
1033           ST M48T35 RTC chip.
1034 
1035           This driver can also be built as a module, if so, the module
1036           will be called "rtc-m48t35".
1037 
1038 config RTC_DRV_M48T59
1039         tristate "ST M48T59/M48T08/M48T02"
1040         depends on HAS_IOMEM
1041         help
1042           If you say Y here you will get support for the
1043           ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1044 
1045           These chips are usually found in Sun SPARC and UltraSPARC
1046           workstations.
1047 
1048           This driver can also be built as a module, if so, the module
1049           will be called "rtc-m48t59".
1050 
1051 config RTC_DRV_MSM6242
1052         tristate "Oki MSM6242"
1053         depends on HAS_IOMEM
1054         help
1055           If you say yes here you get support for the Oki MSM6242
1056           timekeeping chip. It is used in some Amiga models (e.g. A2000).
1057 
1058           This driver can also be built as a module. If so, the module
1059           will be called rtc-msm6242.
1060 
1061 config RTC_DRV_BQ4802
1062         tristate "TI BQ4802"
1063         depends on HAS_IOMEM
1064         help
1065           If you say Y here you will get support for the TI
1066           BQ4802 RTC chip.
1067 
1068           This driver can also be built as a module. If so, the module
1069           will be called rtc-bq4802.
1070 
1071 config RTC_DRV_RP5C01
1072         tristate "Ricoh RP5C01"
1073         depends on HAS_IOMEM
1074         help
1075           If you say yes here you get support for the Ricoh RP5C01
1076           timekeeping chip. It is used in some Amiga models (e.g. A3000
1077           and A4000).
1078 
1079           This driver can also be built as a module. If so, the module
1080           will be called rtc-rp5c01.
1081 
1082 config RTC_DRV_V3020
1083         tristate "EM Microelectronic V3020"
1084         help
1085           If you say yes here you will get support for the
1086           EM Microelectronic v3020 RTC chip.
1087 
1088           This driver can also be built as a module. If so, the module
1089           will be called rtc-v3020.
1090 
1091 config RTC_DRV_WM831X
1092         tristate "Wolfson Microelectronics WM831x RTC"
1093         depends on MFD_WM831X
1094         help
1095           If you say yes here you will get support for the RTC subsystem
1096           of the Wolfson Microelectronics WM831X series PMICs.
1097 
1098           This driver can also be built as a module. If so, the module
1099           will be called "rtc-wm831x".
1100 
1101 config RTC_DRV_WM8350
1102         tristate "Wolfson Microelectronics WM8350 RTC"
1103         depends on MFD_WM8350
1104         help
1105           If you say yes here you will get support for the RTC subsystem
1106           of the Wolfson Microelectronics WM8350.
1107 
1108           This driver can also be built as a module. If so, the module
1109           will be called "rtc-wm8350".
1110 
1111 config RTC_DRV_SPEAR
1112         tristate "SPEAR ST RTC"
1113         depends on PLAT_SPEAR || COMPILE_TEST
1114         default y
1115         help
1116          If you say Y here you will get support for the RTC found on
1117          spear
1118 
1119 config RTC_DRV_PCF50633
1120         depends on MFD_PCF50633
1121         tristate "NXP PCF50633 RTC"
1122         help
1123           If you say yes here you get support for the RTC subsystem of the
1124           NXP PCF50633 used in embedded systems.
1125 
1126 config RTC_DRV_AB3100
1127         tristate "ST-Ericsson AB3100 RTC"
1128         depends on AB3100_CORE
1129         default y if AB3100_CORE
1130         help
1131           Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1132           support. This chip contains a battery- and capacitor-backed RTC.
1133 
1134 config RTC_DRV_AB8500
1135         tristate "ST-Ericsson AB8500 RTC"
1136         depends on AB8500_CORE
1137         select RTC_INTF_DEV
1138         select RTC_INTF_DEV_UIE_EMUL
1139         help
1140           Select this to enable the ST-Ericsson AB8500 power management IC RTC
1141           support. This chip contains a battery- and capacitor-backed RTC.
1142 
1143 config RTC_DRV_NUC900
1144         tristate "NUC910/NUC920 RTC driver"
1145         depends on ARCH_W90X900 || COMPILE_TEST
1146         help
1147           If you say yes here you get support for the RTC subsystem of the
1148           NUC910/NUC920 used in embedded systems.
1149 
1150 config RTC_DRV_OPAL
1151         tristate "IBM OPAL RTC driver"
1152         depends on PPC_POWERNV
1153         default y
1154         help
1155           If you say yes here you get support for the PowerNV platform RTC
1156           driver based on OPAL interfaces.
1157 
1158           This driver can also be built as a module. If so, the module
1159           will be called rtc-opal.
1160 
1161 config RTC_DRV_ZYNQMP
1162         tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1163         depends on OF
1164         help
1165           If you say yes here you get support for the RTC controller found on
1166           Xilinx Zynq Ultrascale+ MPSoC.
1167 
1168 comment "on-CPU RTC drivers"
1169 
1170 config RTC_DRV_ASM9260
1171         tristate "Alphascale asm9260 RTC"
1172         depends on MACH_ASM9260
1173         help
1174           If you say yes here you get support for the RTC on the
1175           Alphascale asm9260 SoC.
1176 
1177           This driver can also be built as a module. If so, the module
1178           will be called rtc-asm9260.
1179 
1180 config RTC_DRV_DAVINCI
1181         tristate "TI DaVinci RTC"
1182         depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1183         help
1184           If you say yes here you get support for the RTC on the
1185           DaVinci platforms (DM365).
1186 
1187           This driver can also be built as a module. If so, the module
1188           will be called rtc-davinci.
1189 
1190 config RTC_DRV_DIGICOLOR
1191         tristate "Conexant Digicolor RTC"
1192         depends on ARCH_DIGICOLOR || COMPILE_TEST
1193         help
1194           If you say yes here you get support for the RTC on Conexant
1195           Digicolor platforms. This currently includes the CX92755 SoC.
1196 
1197           This driver can also be built as a module. If so, the module
1198           will be called rtc-digicolor.
1199 
1200 config RTC_DRV_IMXDI
1201         tristate "Freescale IMX DryIce Real Time Clock"
1202         depends on ARCH_MXC
1203         help
1204            Support for Freescale IMX DryIce RTC
1205 
1206            This driver can also be built as a module, if so, the module
1207            will be called "rtc-imxdi".
1208 
1209 config RTC_DRV_OMAP
1210         tristate "TI OMAP Real Time Clock"
1211         depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1212         help
1213           Say "yes" here to support the on chip real time clock
1214           present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1215 
1216           This driver can also be built as a module, if so, module
1217           will be called rtc-omap.
1218 
1219 config HAVE_S3C_RTC
1220         bool
1221         help
1222           This will include RTC support for Samsung SoCs. If
1223           you want to include RTC support for any machine, kindly
1224           select this in the respective mach-XXXX/Kconfig file.
1225 
1226 config RTC_DRV_S3C
1227         tristate "Samsung S3C series SoC RTC"
1228         depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1229         help
1230           RTC (Realtime Clock) driver for the clock inbuilt into the
1231           Samsung S3C24XX series of SoCs. This can provide periodic
1232           interrupt rates from 1Hz to 64Hz for user programs, and
1233           wakeup from Alarm.
1234 
1235           The driver currently supports the common features on all the
1236           S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1237           and S3C2442.
1238 
1239           This driver can also be build as a module. If so, the module
1240           will be called rtc-s3c.
1241 
1242 config RTC_DRV_EP93XX
1243         tristate "Cirrus Logic EP93XX"
1244         depends on ARCH_EP93XX || COMPILE_TEST
1245         help
1246           If you say yes here you get support for the
1247           RTC embedded in the Cirrus Logic EP93XX processors.
1248 
1249           This driver can also be built as a module. If so, the module
1250           will be called rtc-ep93xx.
1251 
1252 config RTC_DRV_SA1100
1253         tristate "SA11x0/PXA2xx/PXA910"
1254         depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1255         help
1256           If you say Y here you will get access to the real time clock
1257           built into your SA11x0 or PXA2xx CPU.
1258 
1259           To compile this driver as a module, choose M here: the
1260           module will be called rtc-sa1100.
1261 
1262 config RTC_DRV_SH
1263         tristate "SuperH On-Chip RTC"
1264         depends on SUPERH && HAVE_CLK
1265         help
1266           Say Y here to enable support for the on-chip RTC found in
1267           most SuperH processors.
1268 
1269           To compile this driver as a module, choose M here: the
1270           module will be called rtc-sh.
1271 
1272 config RTC_DRV_VR41XX
1273         tristate "NEC VR41XX"
1274         depends on CPU_VR41XX || COMPILE_TEST
1275         help
1276           If you say Y here you will get access to the real time clock
1277           built into your NEC VR41XX CPU.
1278 
1279           To compile this driver as a module, choose M here: the
1280           module will be called rtc-vr41xx.
1281 
1282 config RTC_DRV_PL030
1283         tristate "ARM AMBA PL030 RTC"
1284         depends on ARM_AMBA
1285         help
1286           If you say Y here you will get access to ARM AMBA
1287           PrimeCell PL030 RTC found on certain ARM SOCs.
1288 
1289           To compile this driver as a module, choose M here: the
1290           module will be called rtc-pl030.
1291 
1292 config RTC_DRV_PL031
1293         tristate "ARM AMBA PL031 RTC"
1294         depends on ARM_AMBA
1295         help
1296           If you say Y here you will get access to ARM AMBA
1297           PrimeCell PL031 RTC found on certain ARM SOCs.
1298 
1299           To compile this driver as a module, choose M here: the
1300           module will be called rtc-pl031.
1301 
1302 config RTC_DRV_AT32AP700X
1303         tristate "AT32AP700X series RTC"
1304         depends on PLATFORM_AT32AP || COMPILE_TEST
1305         help
1306           Driver for the internal RTC (Realtime Clock) on Atmel AVR32
1307           AT32AP700x family processors.
1308 
1309 config RTC_DRV_AT91RM9200
1310         tristate "AT91RM9200 or some AT91SAM9 RTC"
1311         depends on ARCH_AT91 || COMPILE_TEST
1312         help
1313           Driver for the internal RTC (Realtime Clock) module found on
1314           Atmel AT91RM9200's and some  AT91SAM9 chips. On AT91SAM9 chips
1315           this is powered by the backup power supply.
1316 
1317 config RTC_DRV_AT91SAM9
1318         tristate "AT91SAM9 RTT as RTC"
1319         depends on ARCH_AT91 || COMPILE_TEST
1320         select MFD_SYSCON
1321         help
1322           Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1323           can be used as an RTC thanks to the backup power supply (e.g. a
1324           small coin cell battery) which keeps this block and the GPBR
1325           (General Purpose Backup Registers) block powered when the device
1326           is shutdown.
1327           Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1328           probably want to use the real RTC block instead of the "RTT as an
1329           RTC" driver.
1330 
1331 config RTC_DRV_AU1XXX
1332         tristate "Au1xxx Counter0 RTC support"
1333         depends on MIPS_ALCHEMY
1334         help
1335           This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1336           counter) to be used as a RTC.
1337 
1338           This driver can also be built as a module. If so, the module
1339           will be called rtc-au1xxx.
1340 
1341 config RTC_DRV_BFIN
1342         tristate "Blackfin On-Chip RTC"
1343         depends on BLACKFIN && !BF561
1344         help
1345           If you say yes here you will get support for the
1346           Blackfin On-Chip Real Time Clock.
1347 
1348           This driver can also be built as a module. If so, the module
1349           will be called rtc-bfin.
1350 
1351 config RTC_DRV_RS5C313
1352         tristate "Ricoh RS5C313"
1353         depends on SH_LANDISK
1354         help
1355           If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1356 
1357 config RTC_DRV_GENERIC
1358         tristate "Generic RTC support"
1359         # Please consider writing a new RTC driver instead of using the generic
1360         # RTC abstraction
1361         depends on PARISC || M68K || PPC || SUPERH32 || COMPILE_TEST
1362         help
1363           Say Y or M here to enable RTC support on systems using the generic
1364           RTC abstraction. If you do not know what you are doing, you should
1365           just say Y.
1366 
1367 config RTC_DRV_PXA
1368         tristate "PXA27x/PXA3xx"
1369         depends on ARCH_PXA
1370         select RTC_DRV_SA1100
1371         help
1372          If you say Y here you will get access to the real time clock
1373          built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1374          consisting of an SA1100 compatible RTC and the extended PXA RTC.
1375 
1376          This RTC driver uses PXA RTC registers available since pxa27x
1377          series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1378 
1379 config RTC_DRV_VT8500
1380         tristate "VIA/WonderMedia 85xx SoC RTC"
1381         depends on ARCH_VT8500 || COMPILE_TEST
1382         help
1383           If you say Y here you will get access to the real time clock
1384           built into your VIA VT8500 SoC or its relatives.
1385 
1386 
1387 config RTC_DRV_SUN4V
1388         bool "SUN4V Hypervisor RTC"
1389         depends on SPARC64
1390         help
1391           If you say Y here you will get support for the Hypervisor
1392           based RTC on SUN4V systems.
1393 
1394 config RTC_DRV_SUN6I
1395         tristate "Allwinner A31 RTC"
1396         default MACH_SUN6I || MACH_SUN8I || COMPILE_TEST
1397         depends on ARCH_SUNXI
1398         help
1399           If you say Y here you will get support for the RTC found in
1400           some Allwinner SoCs like the A31 or the A64.
1401 
1402 config RTC_DRV_SUNXI
1403         tristate "Allwinner sun4i/sun7i RTC"
1404         depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1405         help
1406           If you say Y here you will get support for the RTC found on
1407           Allwinner A10/A20.
1408 
1409 config RTC_DRV_STARFIRE
1410         bool "Starfire RTC"
1411         depends on SPARC64
1412         help
1413           If you say Y here you will get support for the RTC found on
1414           Starfire systems.
1415 
1416 config RTC_DRV_TX4939
1417         tristate "TX4939 SoC"
1418         depends on SOC_TX4939
1419         help
1420           Driver for the internal RTC (Realtime Clock) module found on
1421           Toshiba TX4939 SoC.
1422 
1423 config RTC_DRV_MV
1424         tristate "Marvell SoC RTC"
1425         depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1426         help
1427           If you say yes here you will get support for the in-chip RTC
1428           that can be found in some of Marvell's SoC devices, such as
1429           the Kirkwood 88F6281 and 88F6192.
1430 
1431           This driver can also be built as a module. If so, the module
1432           will be called rtc-mv.
1433 
1434 config RTC_DRV_ARMADA38X
1435         tristate "Armada 38x Marvell SoC RTC"
1436         depends on ARCH_MVEBU || COMPILE_TEST
1437         help
1438           If you say yes here you will get support for the in-chip RTC
1439           that can be found in the Armada 38x Marvell's SoC device
1440 
1441           This driver can also be built as a module. If so, the module
1442           will be called armada38x-rtc.
1443 
1444 config RTC_DRV_GEMINI
1445         tristate "Gemini SoC RTC"
1446         depends on ARCH_GEMINI || COMPILE_TEST
1447         depends on HAS_IOMEM
1448         help
1449           If you say Y here you will get support for the
1450           RTC found on Gemini SoC's.
1451 
1452           This driver can also be built as a module. If so, the module
1453           will be called rtc-gemini.
1454 
1455 config RTC_DRV_PS3
1456         tristate "PS3 RTC"
1457         depends on PPC_PS3
1458         help
1459           If you say yes here you will get support for the RTC on PS3.
1460 
1461           This driver can also be built as a module. If so, the module
1462           will be called rtc-ps3.
1463 
1464 config RTC_DRV_COH901331
1465         tristate "ST-Ericsson COH 901 331 RTC"
1466         depends on ARCH_U300 || COMPILE_TEST
1467         help
1468           If you say Y here you will get access to ST-Ericsson
1469           COH 901 331 RTC clock found in some ST-Ericsson Mobile
1470           Platforms.
1471 
1472           This driver can also be built as a module. If so, the module
1473           will be called "rtc-coh901331".
1474 
1475 
1476 config RTC_DRV_STMP
1477         tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1478         depends on ARCH_MXS || COMPILE_TEST
1479         select STMP_DEVICE
1480         help
1481           If you say yes here you will get support for the onboard
1482           STMP3xxx/i.MX23/i.MX28 RTC.
1483 
1484           This driver can also be built as a module. If so, the module
1485           will be called rtc-stmp3xxx.
1486 
1487 config RTC_DRV_PCAP
1488         tristate "PCAP RTC"
1489         depends on EZX_PCAP
1490         help
1491           If you say Y here you will get support for the RTC found on
1492           the PCAP2 ASIC used on some Motorola phones.
1493 
1494 config RTC_DRV_MC13XXX
1495         depends on MFD_MC13XXX
1496         tristate "Freescale MC13xxx RTC"
1497         help
1498           This enables support for the RTCs found on Freescale's PMICs
1499           MC13783 and MC13892.
1500 
1501 config RTC_DRV_MPC5121
1502         tristate "Freescale MPC5121 built-in RTC"
1503         depends on PPC_MPC512x || PPC_MPC52xx
1504         help
1505           If you say yes here you will get support for the
1506           built-in RTC on MPC5121 or on MPC5200.
1507 
1508           This driver can also be built as a module. If so, the module
1509           will be called rtc-mpc5121.
1510 
1511 config RTC_DRV_JZ4740
1512         tristate "Ingenic JZ4740 SoC"
1513         depends on MACH_JZ4740 || COMPILE_TEST
1514         help
1515           If you say yes here you get support for the Ingenic JZ4740 SoC RTC
1516           controller.
1517 
1518           This driver can also be buillt as a module. If so, the module
1519           will be called rtc-jz4740.
1520 
1521 config RTC_DRV_LPC24XX
1522         tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1523         depends on ARCH_LPC18XX || COMPILE_TEST
1524         depends on OF && HAS_IOMEM
1525         help
1526           This enables support for the NXP RTC found which can be found on
1527           NXP LPC178x/18xx/408x/43xx devices.
1528 
1529           If you have one of the devices above enable this driver to use
1530           the hardware RTC. This driver can also be buillt as a module. If
1531           so, the module will be called rtc-lpc24xx.
1532 
1533 config RTC_DRV_LPC32XX
1534         depends on ARCH_LPC32XX || COMPILE_TEST
1535         tristate "NXP LPC32XX RTC"
1536         help
1537           This enables support for the NXP RTC in the LPC32XX
1538 
1539           This driver can also be buillt as a module. If so, the module
1540           will be called rtc-lpc32xx.
1541 
1542 config RTC_DRV_PM8XXX
1543         tristate "Qualcomm PMIC8XXX RTC"
1544         depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1545         help
1546           If you say yes here you get support for the
1547           Qualcomm PMIC8XXX RTC.
1548 
1549           To compile this driver as a module, choose M here: the
1550           module will be called rtc-pm8xxx.
1551 
1552 config RTC_DRV_TEGRA
1553         tristate "NVIDIA Tegra Internal RTC driver"
1554         depends on ARCH_TEGRA || COMPILE_TEST
1555         help
1556           If you say yes here you get support for the
1557           Tegra 200 series internal RTC module.
1558 
1559           This drive can also be built as a module. If so, the module
1560           will be called rtc-tegra.
1561 
1562 config RTC_DRV_TILE
1563         tristate "Tilera hypervisor RTC support"
1564         depends on TILE
1565         help
1566           Enable support for the Linux driver side of the Tilera
1567           hypervisor's real-time clock interface.
1568 
1569 config RTC_DRV_PUV3
1570         tristate "PKUnity v3 RTC support"
1571         depends on ARCH_PUV3
1572         help
1573           This enables support for the RTC in the PKUnity-v3 SoCs.
1574 
1575           This drive can also be built as a module. If so, the module
1576           will be called rtc-puv3.
1577 
1578 config RTC_DRV_LOONGSON1
1579         tristate "loongson1 RTC support"
1580         depends on MACH_LOONGSON32
1581         help
1582           This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1583           counter) to be used as a RTC.
1584 
1585           This driver can also be built as a module. If so, the module
1586           will be called rtc-ls1x.
1587 
1588 config RTC_DRV_MXC
1589         tristate "Freescale MXC Real Time Clock"
1590         depends on ARCH_MXC
1591         help
1592            If you say yes here you get support for the Freescale MXC
1593            RTC module.
1594 
1595            This driver can also be built as a module, if so, the module
1596            will be called "rtc-mxc".
1597 
1598 config RTC_DRV_SNVS
1599         tristate "Freescale SNVS RTC support"
1600         select REGMAP_MMIO
1601         depends on HAS_IOMEM
1602         depends on OF
1603         help
1604            If you say yes here you get support for the Freescale SNVS
1605            Low Power (LP) RTC module.
1606 
1607            This driver can also be built as a module, if so, the module
1608            will be called "rtc-snvs".
1609 
1610 config RTC_DRV_SIRFSOC
1611         tristate "SiRFSOC RTC"
1612         depends on ARCH_SIRF
1613         help
1614           Say "yes" here to support the real time clock on SiRF SOC chips.
1615           This driver can also be built as a module called rtc-sirfsoc.
1616 
1617 config RTC_DRV_ST_LPC
1618         tristate "STMicroelectronics LPC RTC"
1619         depends on ARCH_STI
1620         depends on OF
1621         help
1622           Say Y here to include STMicroelectronics Low Power Controller
1623           (LPC) based RTC support.
1624 
1625           To compile this driver as a module, choose M here: the
1626           module will be called rtc-st-lpc.
1627 
1628 config RTC_DRV_MOXART
1629         tristate "MOXA ART RTC"
1630         depends on ARCH_MOXART || COMPILE_TEST
1631         help
1632            If you say yes here you get support for the MOXA ART
1633            RTC module.
1634 
1635            This driver can also be built as a module. If so, the module
1636            will be called rtc-moxart
1637 
1638 config RTC_DRV_MT6397
1639         tristate "Mediatek Real Time Clock driver"
1640         depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1641         help
1642           This selects the Mediatek(R) RTC driver. RTC is part of Mediatek
1643           MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1644           Mediatek(R) RTC driver.
1645 
1646           If you want to use Mediatek(R) RTC interface, select Y or M here.
1647 
1648 config RTC_DRV_XGENE
1649         tristate "APM X-Gene RTC"
1650         depends on HAS_IOMEM
1651         depends on ARCH_XGENE || COMPILE_TEST
1652         help
1653           If you say yes here you get support for the APM X-Gene SoC real time
1654           clock.
1655 
1656           This driver can also be built as a module, if so, the module
1657           will be called "rtc-xgene".
1658 
1659 config RTC_DRV_PIC32
1660         tristate "Microchip PIC32 RTC"
1661         depends on MACH_PIC32
1662         default y
1663         help
1664            If you say yes here you get support for the PIC32 RTC module.
1665 
1666            This driver can also be built as a module. If so, the module
1667            will be called rtc-pic32
1668 
1669 comment "HID Sensor RTC drivers"
1670 
1671 config RTC_DRV_HID_SENSOR_TIME
1672         tristate "HID Sensor Time"
1673         depends on USB_HID
1674         select IIO
1675         select HID_SENSOR_HUB
1676         select HID_SENSOR_IIO_COMMON
1677         help
1678           Say yes here to build support for the HID Sensors of type Time.
1679           This drivers makes such sensors available as RTCs.
1680 
1681           If this driver is compiled as a module, it will be named
1682           rtc-hid-sensor-time.
1683 
1684 
1685 endif # RTC_CLASS

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