1 # SPDX-License-Identifier: GPL-2.0-only
3 # RTC class/drivers configuration
9 config RTC_MC146818_LIB
14 bool "Real Time Clock"
16 depends on !S390 && !UML
19 Generic RTC class support. If you say yes here, you will
20 be allowed to plug one or more RTCs to your system. You will
21 probably want to enable one or more of the interfaces below.
26 bool "Set system time from RTC on startup and resume"
29 If you say yes here, the system time (wall clock) will be set using
30 the value read from a specified RTC device. This is useful to avoid
31 unnecessary fsck runs at boot time, and to network better.
33 config RTC_HCTOSYS_DEVICE
34 string "RTC used to set the system time"
35 depends on RTC_HCTOSYS
38 The RTC device that will be used to (re)initialize the system
39 clock, usually rtc0. Initialization is done when the system
40 starts up, and when it resumes from a low power state. This
41 device should record time in UTC, since the kernel won't do
44 This clock should be battery-backed, so that it reads the correct
45 time when the system boots from a power-off state. Otherwise, your
46 system will need an external clock source (like an NTP server).
48 If the clock you specify here is not battery backed, it may still
49 be useful to reinitialize system time when resuming from system
50 sleep states. Do not specify an RTC here unless it stays powered
51 during all this system's supported sleep states.
54 bool "Set the RTC time based on NTP synchronization"
57 If you say yes here, the system time (wall clock) will be stored
58 in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
59 minutes if userspace reports synchronized NTP status.
61 config RTC_SYSTOHC_DEVICE
62 string "RTC used to synchronize NTP adjustment"
63 depends on RTC_SYSTOHC
64 default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
67 The RTC device used for NTP synchronization. The main difference
68 between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this
69 one can sleep when setting time, because it runs in the workqueue
73 bool "RTC debug support"
75 Say yes here to enable debugging support in the RTC framework
76 and individual RTC drivers.
79 bool "RTC non volatile storage support"
83 Say yes here to add support for the non volatile (often battery
84 backed) storage present on RTCs.
86 comment "RTC interfaces"
89 bool "/sys/class/rtc/rtcN (sysfs)"
93 Say yes here if you want to use your RTCs using sysfs interfaces,
94 /sys/class/rtc/rtc0 through /sys/.../rtcN.
99 bool "/proc/driver/rtc (procfs for rtcN)"
103 Say yes here if you want to use your system clock RTC through
104 the proc interface, /proc/driver/rtc.
105 Other RTCs will not be available through that API.
106 If there is no RTC for the system clock, then the first RTC(rtc0)
112 bool "/dev/rtcN (character devices)"
115 Say yes here if you want to use your RTCs using the /dev
116 interfaces, which "udev" sets up as /dev/rtc0 through
119 You may want to set up a symbolic link so one of these
120 can be accessed as /dev/rtc, which is a name
121 expected by "hwclock" and some other programs. Recent
122 versions of "udev" are known to set up the symlink for you.
126 config RTC_INTF_DEV_UIE_EMUL
127 bool "RTC UIE emulation on dev interface"
128 depends on RTC_INTF_DEV
130 Provides an emulation for RTC_UIE if the underlying rtc chip
131 driver does not expose RTC_UIE ioctls. Those requests generate
132 once-per-second update interrupts, used for synchronization.
134 The emulation code will read the time from the hardware
135 clock several times per second, please enable this option
136 only if you know that you really need it.
139 tristate "Test driver/device"
141 If you say yes here you get support for the
142 RTC test driver. It's a software RTC which can be
143 used to test the RTC subsystem APIs. It gets
144 the time from the system clock.
145 You want this driver only if you are doing development
146 on the RTC subsystem. Please read the source code
149 This driver can also be built as a module. If so, the module
150 will be called rtc-test.
152 comment "I2C RTC drivers"
156 config RTC_DRV_88PM860X
157 tristate "Marvell 88PM860x"
158 depends on MFD_88PM860X
160 If you say yes here you get support for RTC function in Marvell
163 This driver can also be built as a module. If so, the module
164 will be called rtc-88pm860x.
166 config RTC_DRV_88PM80X
167 tristate "Marvell 88PM80x"
168 depends on MFD_88PM800
170 If you say yes here you get support for RTC function in Marvell
173 This driver can also be built as a module. If so, the module
174 will be called rtc-88pm80x.
176 config RTC_DRV_ABB5ZES3
178 tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
180 If you say yes here you get support for the Abracon
181 AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
183 This driver can also be built as a module. If so, the module
184 will be called rtc-ab-b5ze-s3.
186 config RTC_DRV_ABEOZ9
188 tristate "Abracon AB-RTCMC-32.768kHz-EOZ9"
190 If you say yes here you get support for the Abracon
191 AB-RTCMC-32.768kHz-EOA9 I2C RTC chip.
193 This driver can also be built as a module. If so, the module
194 will be called rtc-ab-e0z9.
196 config RTC_DRV_ABX80X
197 tristate "Abracon ABx80x"
198 select WATCHDOG_CORE if WATCHDOG
200 If you say yes here you get support for Abracon AB080X and AB180X
201 families of ultra-low-power battery- and capacitor-backed real-time
204 This driver can also be built as a module. If so, the module
205 will be called rtc-abx80x.
208 tristate "X-Powers AC100"
211 If you say yes here you get support for the real-time clock found
212 in X-Powers AC100 family peripheral ICs.
214 This driver can also be built as a module. If so, the module
215 will be called rtc-ac100.
217 config RTC_DRV_BRCMSTB
218 tristate "Broadcom STB wake-timer"
219 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
220 default ARCH_BRCMSTB || BMIPS_GENERIC
222 If you say yes here you get support for the wake-timer found on
223 Broadcom STB SoCs (BCM7xxx).
225 This driver can also be built as a module. If so, the module will
226 be called rtc-brcmstb-waketimer.
228 config RTC_DRV_AS3722
229 tristate "ams AS3722 RTC driver"
230 depends on MFD_AS3722
232 If you say yes here you get support for the RTC of ams AS3722 PMIC
235 This driver can also be built as a module. If so, the module
236 will be called rtc-as3722.
238 config RTC_DRV_DS1307
239 tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
241 select WATCHDOG_CORE if WATCHDOG
243 If you say yes here you get support for various compatible RTC
244 chips (often with battery backup) connected with I2C. This driver
245 should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341,
246 ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
247 In some cases the RTC must already have been initialized (by
248 manufacturing or a bootloader).
250 The first seven registers on these chips hold an RTC, and other
251 registers may add features such as NVRAM, a trickle charger for
252 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
253 sysfs, but other chip features may not be available.
255 This driver can also be built as a module. If so, the module
256 will be called rtc-ds1307.
258 config RTC_DRV_DS1307_CENTURY
259 bool "Century bit support for rtc-ds1307"
260 depends on RTC_DRV_DS1307
263 The DS1307 driver suffered from a bug where it was enabling the
264 century bit inconditionnally but never used it when reading the time.
265 It made the driver unable to support dates beyond 2099.
266 Setting this option will add proper support for the century bit but if
267 the time was previously set using a kernel predating this option,
268 reading the date will return a date in the next century.
269 To solve that, you could boot a kernel without this option set, set
270 the RTC date and then boot a kernel with this option set.
272 config RTC_DRV_DS1374
273 tristate "Dallas/Maxim DS1374"
275 If you say yes here you get support for Dallas Semiconductor
276 DS1374 real-time clock chips. If an interrupt is associated
277 with the device, the alarm functionality is supported.
279 This driver can also be built as a module. If so, the module
280 will be called rtc-ds1374.
282 config RTC_DRV_DS1374_WDT
283 bool "Dallas/Maxim DS1374 watchdog timer"
284 depends on RTC_DRV_DS1374 && WATCHDOG
287 If you say Y here you will get support for the
288 watchdog timer in the Dallas Semiconductor DS1374
289 real-time clock chips.
291 config RTC_DRV_DS1672
292 tristate "Dallas/Maxim DS1672"
294 If you say yes here you get support for the
295 Dallas/Maxim DS1672 timekeeping chip.
297 This driver can also be built as a module. If so, the module
298 will be called rtc-ds1672.
300 config RTC_DRV_HYM8563
301 tristate "Haoyu Microelectronics HYM8563"
304 Say Y to enable support for the HYM8563 I2C RTC chip. Apart
305 from the usual rtc functions it provides a clock output of
308 This driver can also be built as a module. If so, the module
309 will be called rtc-hym8563.
311 config RTC_DRV_LP8788
312 tristate "TI LP8788 RTC driver"
313 depends on MFD_LP8788
315 Say Y to enable support for the LP8788 RTC/ALARM driver.
317 config RTC_DRV_MAX6900
318 tristate "Maxim MAX6900"
320 If you say yes here you will get support for the
321 Maxim MAX6900 I2C RTC chip.
323 This driver can also be built as a module. If so, the module
324 will be called rtc-max6900.
326 config RTC_DRV_MAX8907
327 tristate "Maxim MAX8907"
328 depends on MFD_MAX8907 || COMPILE_TEST
331 If you say yes here you will get support for the
332 RTC of Maxim MAX8907 PMIC.
334 This driver can also be built as a module. If so, the module
335 will be called rtc-max8907.
337 config RTC_DRV_MAX8925
338 tristate "Maxim MAX8925"
339 depends on MFD_MAX8925
341 If you say yes here you will get support for the
342 RTC of Maxim MAX8925 PMIC.
344 This driver can also be built as a module. If so, the module
345 will be called rtc-max8925.
347 config RTC_DRV_MAX8998
348 tristate "Maxim MAX8998"
349 depends on MFD_MAX8998
351 If you say yes here you will get support for the
352 RTC of Maxim MAX8998 PMIC.
354 This driver can also be built as a module. If so, the module
355 will be called rtc-max8998.
357 config RTC_DRV_MAX8997
358 tristate "Maxim MAX8997"
359 depends on MFD_MAX8997
361 If you say yes here you will get support for the
362 RTC of Maxim MAX8997 PMIC.
364 This driver can also be built as a module. If so, the module
365 will be called rtc-max8997.
367 config RTC_DRV_MAX77686
368 tristate "Maxim MAX77686"
369 depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
371 If you say yes here you will get support for the
372 RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
374 This driver can also be built as a module. If so, the module
375 will be called rtc-max77686.
378 tristate "Rockchip RK805/RK808/RK809/RK817/RK818 RTC"
381 If you say yes here you will get support for the
382 RTC of RK805, RK809 and RK817, RK808 and RK818 PMIC.
384 This driver can also be built as a module. If so, the module
385 will be called rk808-rtc.
387 config RTC_DRV_RS5C372
388 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
390 If you say yes here you get support for the
391 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
393 This driver can also be built as a module. If so, the module
394 will be called rtc-rs5c372.
396 config RTC_DRV_ISL1208
397 tristate "Intersil ISL1208"
399 If you say yes here you get support for the
400 Intersil ISL1208 RTC chip.
402 This driver can also be built as a module. If so, the module
403 will be called rtc-isl1208.
405 config RTC_DRV_ISL12022
406 tristate "Intersil ISL12022"
408 If you say yes here you get support for the
409 Intersil ISL12022 RTC chip.
411 This driver can also be built as a module. If so, the module
412 will be called rtc-isl12022.
414 config RTC_DRV_ISL12026
415 tristate "Intersil ISL12026"
416 depends on OF || COMPILE_TEST
418 If you say yes here you get support for the
419 Intersil ISL12026 RTC chip.
421 This driver can also be built as a module. If so, the module
422 will be called rtc-isl12026.
425 tristate "Xicor/Intersil X1205"
427 If you say yes here you get support for the
428 Xicor/Intersil X1205 RTC chip.
430 This driver can also be built as a module. If so, the module
431 will be called rtc-x1205.
433 config RTC_DRV_PCF8523
434 tristate "NXP PCF8523"
436 If you say yes here you get support for the NXP PCF8523 RTC
439 This driver can also be built as a module. If so, the module
440 will be called rtc-pcf8523.
442 config RTC_DRV_PCF85063
443 tristate "NXP PCF85063"
446 If you say yes here you get support for the PCF85063 RTC chip
448 This driver can also be built as a module. If so, the module
449 will be called rtc-pcf85063.
451 config RTC_DRV_PCF85363
452 tristate "NXP PCF85363"
455 If you say yes here you get support for the PCF85363 RTC chip.
457 This driver can also be built as a module. If so, the module
458 will be called rtc-pcf85363.
460 The nvmem interface will be named pcf85363-#, where # is the
461 zero-based instance number.
463 config RTC_DRV_PCF8563
464 tristate "Philips PCF8563/Epson RTC8564"
466 If you say yes here you get support for the
467 Philips PCF8563 RTC chip. The Epson RTC8564
470 This driver can also be built as a module. If so, the module
471 will be called rtc-pcf8563.
473 config RTC_DRV_PCF8583
474 tristate "Philips PCF8583"
476 If you say yes here you get support for the Philips PCF8583
477 RTC chip found on Acorn RiscPCs. This driver supports the
478 platform specific method of retrieving the current year from
479 the RTC's SRAM. It will work on other platforms with the same
480 chip, but the year will probably have to be tweaked.
482 This driver can also be built as a module. If so, the module
483 will be called rtc-pcf8583.
485 config RTC_DRV_M41T80
486 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
488 If you say Y here you will get support for the ST M41T60
489 and M41T80 RTC chips series. Currently, the following chips are
490 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
491 M41ST85, M41ST87, and MicroCrystal RV4162.
493 This driver can also be built as a module. If so, the module
494 will be called rtc-m41t80.
496 config RTC_DRV_M41T80_WDT
497 bool "ST M41T65/M41T80 series RTC watchdog timer"
498 depends on RTC_DRV_M41T80
500 If you say Y here you will get support for the
501 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
503 config RTC_DRV_BD70528
504 tristate "ROHM BD70528 PMIC RTC"
505 depends on MFD_ROHM_BD70528 && (BD70528_WATCHDOG || !BD70528_WATCHDOG)
507 If you say Y here you will get support for the RTC
508 block on ROHM BD70528 and BD71828 Power Management IC.
510 This driver can also be built as a module. If so, the module
511 will be called rtc-bd70528.
514 tristate "TI BQ32000"
516 If you say Y here you will get support for the TI
517 BQ32000 I2C RTC chip.
519 This driver can also be built as a module. If so, the module
520 will be called rtc-bq32k.
522 config RTC_DRV_DM355EVM
523 tristate "TI DaVinci DM355 EVM RTC"
524 depends on MFD_DM355EVM_MSP
526 Supports the RTC firmware in the MSP430 on the DM355 EVM.
528 config RTC_DRV_TWL92330
529 bool "TI TWL92330/Menelaus"
532 If you say yes here you get support for the RTC on the
533 TWL92330 "Menelaus" power management chip, used with OMAP2
534 platforms. The support is integrated with the rest of
535 the Menelaus driver; it's not separate module.
537 config RTC_DRV_TWL4030
538 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
539 depends on TWL4030_CORE
542 If you say yes here you get support for the RTC on the
543 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
545 This driver can also be built as a module. If so, the module
546 will be called rtc-twl.
548 config RTC_DRV_PALMAS
549 tristate "TI Palmas RTC driver"
550 depends on MFD_PALMAS
552 If you say yes here you get support for the RTC of TI PALMA series PMIC
555 This driver can also be built as a module. If so, the module
556 will be called rtc-palma.
558 config RTC_DRV_TPS6586X
559 tristate "TI TPS6586X RTC driver"
560 depends on MFD_TPS6586X
562 TI Power Management IC TPS6586X supports RTC functionality
563 along with alarm. This driver supports the RTC driver for
564 the TPS6586X RTC module.
566 config RTC_DRV_TPS65910
567 tristate "TI TPS65910 RTC driver"
568 depends on MFD_TPS65910
570 If you say yes here you get support for the RTC on the
573 This driver can also be built as a module. If so, the module
574 will be called rtc-tps65910.
576 config RTC_DRV_TPS80031
577 tristate "TI TPS80031/TPS80032 RTC driver"
578 depends on MFD_TPS80031
580 TI Power Management IC TPS80031 supports RTC functionality
581 along with alarm. This driver supports the RTC driver for
582 the TPS80031 RTC module.
584 config RTC_DRV_RC5T583
585 tristate "RICOH 5T583 RTC driver"
586 depends on MFD_RC5T583
588 If you say yes here you get support for the RTC on the
591 This driver can also be built as a module. If so, the module
592 will be called rtc-rc5t583.
594 config RTC_DRV_RC5T619
595 tristate "RICOH RC5T619 RTC driver"
596 depends on MFD_RN5T618
598 If you say yes here you get support for the RTC on the
601 This driver can also be built as a module. If so, the module
602 will be called rtc-rc5t619.
604 config RTC_DRV_S35390A
605 tristate "Seiko Instruments S-35390A"
608 If you say yes here you will get support for the Seiko
609 Instruments S-35390A.
611 This driver can also be built as a module. If so the module
612 will be called rtc-s35390a.
614 config RTC_DRV_FM3130
615 tristate "Ramtron FM3130"
617 If you say Y here you will get support for the
618 Ramtron FM3130 RTC chips.
619 Ramtron FM3130 is a chip with two separate devices inside,
620 RTC clock and FRAM. This driver provides only RTC functionality.
622 This driver can also be built as a module. If so the module
623 will be called rtc-fm3130.
625 config RTC_DRV_RX8010
626 tristate "Epson RX8010SJ"
628 If you say yes here you get support for the Epson RX8010SJ RTC
631 This driver can also be built as a module. If so, the module
632 will be called rtc-rx8010.
634 config RTC_DRV_RX8581
635 tristate "Epson RX-8571/RX-8581"
638 If you say yes here you will get support for the Epson RX-8571/
641 This driver can also be built as a module. If so the module
642 will be called rtc-rx8581.
644 config RTC_DRV_RX8025
645 tristate "Epson RX-8025SA/NB"
647 If you say yes here you get support for the Epson
648 RX-8025SA/NB RTC chips.
650 This driver can also be built as a module. If so, the module
651 will be called rtc-rx8025.
653 config RTC_DRV_EM3027
654 tristate "EM Microelectronic EM3027"
656 If you say yes here you get support for the EM
657 Microelectronic EM3027 RTC chips.
659 This driver can also be built as a module. If so, the module
660 will be called rtc-em3027.
662 config RTC_DRV_RV3028
663 tristate "Micro Crystal RV3028"
666 If you say yes here you get support for the Micro Crystal
669 This driver can also be built as a module. If so, the module
670 will be called rtc-rv3028.
672 config RTC_DRV_RV3032
673 tristate "Micro Crystal RV3032"
676 If you say yes here you get support for the Micro Crystal
679 This driver can also be built as a module. If so, the module
680 will be called rtc-rv3032.
682 config RTC_DRV_RV8803
683 tristate "Micro Crystal RV8803, Epson RX8900"
685 If you say yes here you get support for the Micro Crystal RV8803 and
686 Epson RX8900 RTC chips.
688 This driver can also be built as a module. If so, the module
689 will be called rtc-rv8803.
692 tristate "Samsung S2M/S5M series"
693 depends on MFD_SEC_CORE || COMPILE_TEST
696 If you say yes here you will get support for the
697 RTC of Samsung S2MPS14 and S5M PMIC series.
699 This driver can also be built as a module. If so, the module
700 will be called rtc-s5m.
702 config RTC_DRV_SD3078
703 tristate "ZXW Shenzhen whwave SD3078"
706 If you say yes here you get support for the ZXW Shenzhen whwave
709 This driver can also be built as a module. If so, the module
710 will be called rtc-sd3078
714 comment "SPI RTC drivers"
718 config RTC_DRV_M41T93
721 If you say yes here you will get support for the
722 ST M41T93 SPI RTC chip.
724 This driver can also be built as a module. If so, the module
725 will be called rtc-m41t93.
727 config RTC_DRV_M41T94
730 If you say yes here you will get support for the
731 ST M41T94 SPI RTC chip.
733 This driver can also be built as a module. If so, the module
734 will be called rtc-m41t94.
736 config RTC_DRV_DS1302
737 tristate "Dallas/Maxim DS1302"
740 If you say yes here you get support for the Dallas DS1302 RTC chips.
742 This driver can also be built as a module. If so, the module
743 will be called rtc-ds1302.
745 config RTC_DRV_DS1305
746 tristate "Dallas/Maxim DS1305/DS1306"
748 Select this driver to get support for the Dallas/Maxim DS1305
749 and DS1306 real time clock chips. These support a trickle
750 charger, alarms, and NVRAM in addition to the clock.
752 This driver can also be built as a module. If so, the module
753 will be called rtc-ds1305.
755 config RTC_DRV_DS1343
757 tristate "Dallas/Maxim DS1343/DS1344"
759 If you say yes here you get support for the
760 Dallas/Maxim DS1343 and DS1344 real time clock chips.
761 Support for trickle charger, alarm is provided.
763 This driver can also be built as a module. If so, the module
764 will be called rtc-ds1343.
766 config RTC_DRV_DS1347
768 tristate "Dallas/Maxim DS1347"
770 If you say yes here you get support for the
771 Dallas/Maxim DS1347 chips.
773 This driver only supports the RTC feature, and not other chip
774 features such as alarms.
776 This driver can also be built as a module. If so, the module
777 will be called rtc-ds1347.
779 config RTC_DRV_DS1390
780 tristate "Dallas/Maxim DS1390/93/94"
782 If you say yes here you get support for the
783 Dallas/Maxim DS1390/93/94 chips.
785 This driver supports the RTC feature and trickle charging but not
786 other chip features such as alarms.
788 This driver can also be built as a module. If so, the module
789 will be called rtc-ds1390.
791 config RTC_DRV_MAX6916
792 tristate "Maxim MAX6916"
794 If you say yes here you will get support for the
795 Maxim MAX6916 SPI RTC chip.
797 This driver only supports the RTC feature, and not other chip
798 features such as alarms.
800 This driver can also be built as a module. If so, the module
801 will be called rtc-max6916.
804 tristate "Epson RTC-9701JE"
806 If you say yes here you will get support for the
807 Epson RTC-9701JE SPI RTC chip.
809 This driver can also be built as a module. If so, the module
810 will be called rtc-r9701.
812 config RTC_DRV_RX4581
813 tristate "Epson RX-4581"
815 If you say yes here you will get support for the Epson RX-4581.
817 This driver can also be built as a module. If so the module
818 will be called rtc-rx4581.
820 config RTC_DRV_RX6110
821 tristate "Epson RX-6110"
824 If you say yes here you will get support for the Epson RX-6610.
826 This driver can also be built as a module. If so the module
827 will be called rtc-rx6110.
829 config RTC_DRV_RS5C348
830 tristate "Ricoh RS5C348A/B"
832 If you say yes here you get support for the
833 Ricoh RS5C348A and RS5C348B RTC chips.
835 This driver can also be built as a module. If so, the module
836 will be called rtc-rs5c348.
838 config RTC_DRV_MAX6902
839 tristate "Maxim MAX6902"
841 If you say yes here you will get support for the
842 Maxim MAX6902 SPI RTC chip.
844 This driver can also be built as a module. If so, the module
845 will be called rtc-max6902.
847 config RTC_DRV_PCF2123
848 tristate "NXP PCF2123"
851 If you say yes here you get support for the NXP PCF2123
854 This driver can also be built as a module. If so, the module
855 will be called rtc-pcf2123.
857 config RTC_DRV_MCP795
858 tristate "Microchip MCP795"
860 If you say yes here you will get support for the Microchip MCP795.
862 This driver can also be built as a module. If so the module
863 will be called rtc-mcp795.
868 # Helper to resolve issues with configs that have SPI enabled but I2C
869 # modular. See SND_SOC_I2C_AND_SPI for more information
871 config RTC_I2C_AND_SPI
875 default y if SPI_MASTER=y
877 comment "SPI and I2C RTC drivers"
879 config RTC_DRV_DS3232
880 tristate "Dallas/Maxim DS3232/DS3234"
881 depends on RTC_I2C_AND_SPI
882 select REGMAP_I2C if I2C
883 select REGMAP_SPI if SPI_MASTER
885 If you say yes here you get support for Dallas Semiconductor
886 DS3232 and DS3234 real-time clock chips. If an interrupt is associated
887 with the device, the alarm functionality is supported.
889 This driver can also be built as a module. If so, the module
890 will be called rtc-ds3232.
892 config RTC_DRV_DS3232_HWMON
893 bool "HWMON support for Dallas/Maxim DS3232/DS3234"
894 depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
897 Say Y here if you want to expose temperature sensor data on
900 config RTC_DRV_PCF2127
901 tristate "NXP PCF2127"
902 depends on RTC_I2C_AND_SPI
903 select REGMAP_I2C if I2C
904 select REGMAP_SPI if SPI_MASTER
905 select WATCHDOG_CORE if WATCHDOG
907 If you say yes here you get support for the NXP PCF2127/29 RTC
908 chips with integrated quartz crystal for industrial applications.
909 Both chips also have watchdog timer and tamper switch detection
912 PCF2127 has an additional feature of 512 bytes battery backed
913 memory that's accessible using nvmem interface.
915 This driver can also be built as a module. If so, the module
916 will be called rtc-pcf2127.
918 config RTC_DRV_RV3029C2
919 tristate "Micro Crystal RV3029/3049"
920 depends on RTC_I2C_AND_SPI
921 select REGMAP_I2C if I2C
922 select REGMAP_SPI if SPI_MASTER
924 If you say yes here you get support for the Micro Crystal
925 RV3029 and RV3049 RTC chips.
927 This driver can also be built as a module. If so, the module
928 will be called rtc-rv3029c2.
930 config RTC_DRV_RV3029_HWMON
931 bool "HWMON support for RV3029/3049"
932 depends on RTC_DRV_RV3029C2 && HWMON
933 depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
936 Say Y here if you want to expose temperature sensor data on
939 comment "Platform RTC drivers"
941 # this 'CMOS' RTC driver is arch dependent because it requires
942 # <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
943 # global rtc_lock ... it's not yet just another platform_device.
946 tristate "PC-style 'CMOS'"
947 depends on X86 || ARM || PPC || MIPS || SPARC64
949 select RTC_MC146818_LIB
951 Say "yes" here to get direct support for the real time clock
952 found in every PC or ACPI-based system, and some other boards.
953 Specifically the original MC146818, compatibles like those in
954 PC south bridges, the DS12887 or M48T86, some multifunction
955 or LPC bus chips, and so on.
957 Your system will need to define the platform device used by
958 this driver, otherwise it won't be accessible. This means
959 you can safely enable this driver if you don't know whether
960 or not your board has this kind of hardware.
962 This driver can also be built as a module. If so, the module
963 will be called rtc-cmos.
966 bool "Alpha PC-style CMOS"
968 select RTC_MC146818_LIB
971 Direct support for the real-time clock found on every Alpha
972 system, specifically MC146818 compatibles. If in doubt, say Y.
975 tristate "Virtual RTC for Intel MID platforms"
976 depends on X86_INTEL_MID
977 default y if X86_INTEL_MID
980 Say "yes" here to get direct support for the real time clock
981 found on Moorestown platforms. The VRTC is a emulated RTC that
982 derives its clock source from a real RTC in the PMIC. The MC146818
983 style programming interface is mostly conserved, but any
984 updates are done via IPC calls to the system controller FW.
986 config RTC_DRV_DS1216
987 tristate "Dallas DS1216"
990 If you say yes here you get support for the Dallas DS1216 RTC chips.
992 config RTC_DRV_DS1286
993 tristate "Dallas DS1286"
996 If you say yes here you get support for the Dallas DS1286 RTC chips.
998 config RTC_DRV_DS1511
999 tristate "Dallas DS1511"
1000 depends on HAS_IOMEM
1002 If you say yes here you get support for the
1003 Dallas DS1511 timekeeping/watchdog chip.
1005 This driver can also be built as a module. If so, the module
1006 will be called rtc-ds1511.
1008 config RTC_DRV_DS1553
1009 tristate "Maxim/Dallas DS1553"
1010 depends on HAS_IOMEM
1012 If you say yes here you get support for the
1013 Maxim/Dallas DS1553 timekeeping chip.
1015 This driver can also be built as a module. If so, the module
1016 will be called rtc-ds1553.
1018 config RTC_DRV_DS1685_FAMILY
1019 tristate "Dallas/Maxim DS1685 Family"
1021 If you say yes here you get support for the Dallas/Maxim DS1685
1022 family of real time chips. This family includes the DS1685/DS1687,
1023 DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
1024 DS17885/DS17887 chips.
1026 This driver can also be built as a module. If so, the module
1027 will be called rtc-ds1685.
1031 depends on RTC_DRV_DS1685_FAMILY
1032 default RTC_DRV_DS1685
1034 config RTC_DRV_DS1685
1035 bool "DS1685/DS1687"
1037 This enables support for the Dallas/Maxim DS1685/DS1687 real time
1040 This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
1041 systems, as well as EPPC-405-UC modules by electronic system design
1044 config RTC_DRV_DS1689
1045 bool "DS1689/DS1693"
1047 This enables support for the Dallas/Maxim DS1689/DS1693 real time
1050 This is an older RTC chip, supplanted by the DS1685/DS1687 above,
1051 which supports a few minor features such as Vcc, Vbat, and Power
1052 Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
1054 It also works for the even older DS1688/DS1691 RTC chips, which are
1055 virtually the same and carry the same model number. Both chips
1056 have 114 bytes of user NVRAM.
1058 config RTC_DRV_DS17285
1059 bool "DS17285/DS17287"
1061 This enables support for the Dallas/Maxim DS17285/DS17287 real time
1064 This chip features 2kb of extended NV-SRAM. It may possibly be
1065 found in some SGI O2 systems (rare).
1067 config RTC_DRV_DS17485
1068 bool "DS17485/DS17487"
1070 This enables support for the Dallas/Maxim DS17485/DS17487 real time
1073 This chip features 4kb of extended NV-SRAM.
1075 config RTC_DRV_DS17885
1076 bool "DS17885/DS17887"
1078 This enables support for the Dallas/Maxim DS17885/DS17887 real time
1081 This chip features 8kb of extended NV-SRAM.
1085 config RTC_DRV_DS1742
1086 tristate "Maxim/Dallas DS1742/1743"
1087 depends on HAS_IOMEM
1089 If you say yes here you get support for the
1090 Maxim/Dallas DS1742/1743 timekeeping chip.
1092 This driver can also be built as a module. If so, the module
1093 will be called rtc-ds1742.
1095 config RTC_DRV_DS2404
1096 tristate "Maxim/Dallas DS2404"
1098 If you say yes here you get support for the
1099 Dallas DS2404 RTC chip.
1101 This driver can also be built as a module. If so, the module
1102 will be called rtc-ds2404.
1104 config RTC_DRV_DA9052
1105 tristate "Dialog DA9052/DA9053 RTC"
1106 depends on PMIC_DA9052
1108 Say y here to support the RTC driver for Dialog Semiconductor
1109 DA9052-BC and DA9053-AA/Bx PMICs.
1111 config RTC_DRV_DA9055
1112 tristate "Dialog Semiconductor DA9055 RTC"
1113 depends on MFD_DA9055
1115 If you say yes here you will get support for the
1116 RTC of the Dialog DA9055 PMIC.
1118 This driver can also be built as a module. If so, the module
1119 will be called rtc-da9055
1121 config RTC_DRV_DA9063
1122 tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1123 depends on MFD_DA9063 || MFD_DA9062
1125 If you say yes here you will get support for the RTC subsystem
1126 for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1128 This driver can also be built as a module. If so, the module
1129 will be called "rtc-da9063".
1133 depends on EFI && !X86
1135 If you say yes here you will get support for the EFI
1138 This driver can also be built as a module. If so, the module
1139 will be called rtc-efi.
1141 config RTC_DRV_STK17TA8
1142 tristate "Simtek STK17TA8"
1143 depends on HAS_IOMEM
1145 If you say yes here you get support for the
1146 Simtek STK17TA8 timekeeping chip.
1148 This driver can also be built as a module. If so, the module
1149 will be called rtc-stk17ta8.
1151 config RTC_DRV_M48T86
1152 tristate "ST M48T86/Dallas DS12887"
1154 If you say Y here you will get support for the
1155 ST M48T86 and Dallas DS12887 RTC chips.
1157 This driver can also be built as a module. If so, the module
1158 will be called rtc-m48t86.
1160 config RTC_DRV_M48T35
1161 tristate "ST M48T35"
1162 depends on HAS_IOMEM
1164 If you say Y here you will get support for the
1167 This driver can also be built as a module, if so, the module
1168 will be called "rtc-m48t35".
1170 config RTC_DRV_M48T59
1171 tristate "ST M48T59/M48T08/M48T02"
1172 depends on HAS_IOMEM
1174 If you say Y here you will get support for the
1175 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1177 These chips are usually found in Sun SPARC and UltraSPARC
1180 This driver can also be built as a module, if so, the module
1181 will be called "rtc-m48t59".
1183 config RTC_DRV_MSM6242
1184 tristate "Oki MSM6242"
1185 depends on HAS_IOMEM
1187 If you say yes here you get support for the Oki MSM6242
1188 timekeeping chip. It is used in some Amiga models (e.g. A2000).
1190 This driver can also be built as a module. If so, the module
1191 will be called rtc-msm6242.
1193 config RTC_DRV_BQ4802
1194 tristate "TI BQ4802"
1195 depends on HAS_IOMEM
1197 If you say Y here you will get support for the TI
1200 This driver can also be built as a module. If so, the module
1201 will be called rtc-bq4802.
1203 config RTC_DRV_RP5C01
1204 tristate "Ricoh RP5C01"
1205 depends on HAS_IOMEM
1207 If you say yes here you get support for the Ricoh RP5C01
1208 timekeeping chip. It is used in some Amiga models (e.g. A3000
1211 This driver can also be built as a module. If so, the module
1212 will be called rtc-rp5c01.
1214 config RTC_DRV_V3020
1215 tristate "EM Microelectronic V3020"
1217 If you say yes here you will get support for the
1218 EM Microelectronic v3020 RTC chip.
1220 This driver can also be built as a module. If so, the module
1221 will be called rtc-v3020.
1223 config RTC_DRV_WM831X
1224 tristate "Wolfson Microelectronics WM831x RTC"
1225 depends on MFD_WM831X
1227 If you say yes here you will get support for the RTC subsystem
1228 of the Wolfson Microelectronics WM831X series PMICs.
1230 This driver can also be built as a module. If so, the module
1231 will be called "rtc-wm831x".
1233 config RTC_DRV_WM8350
1234 tristate "Wolfson Microelectronics WM8350 RTC"
1235 depends on MFD_WM8350
1237 If you say yes here you will get support for the RTC subsystem
1238 of the Wolfson Microelectronics WM8350.
1240 This driver can also be built as a module. If so, the module
1241 will be called "rtc-wm8350".
1243 config RTC_DRV_SC27XX
1244 tristate "Spreadtrum SC27xx RTC"
1245 depends on MFD_SC27XX_PMIC || COMPILE_TEST
1247 If you say Y here you will get support for the RTC subsystem
1248 of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs
1249 includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.
1251 This driver can also be built as a module. If so, the module
1252 will be called rtc-sc27xx.
1254 config RTC_DRV_SPEAR
1255 tristate "SPEAR ST RTC"
1256 depends on PLAT_SPEAR || COMPILE_TEST
1259 If you say Y here you will get support for the RTC found on
1262 config RTC_DRV_PCF50633
1263 depends on MFD_PCF50633
1264 tristate "NXP PCF50633 RTC"
1266 If you say yes here you get support for the RTC subsystem of the
1267 NXP PCF50633 used in embedded systems.
1269 config RTC_DRV_AB3100
1270 tristate "ST-Ericsson AB3100 RTC"
1271 depends on AB3100_CORE
1272 default y if AB3100_CORE
1274 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1275 support. This chip contains a battery- and capacitor-backed RTC.
1277 config RTC_DRV_AB8500
1278 tristate "ST-Ericsson AB8500 RTC"
1279 depends on AB8500_CORE
1281 select RTC_INTF_DEV_UIE_EMUL
1283 Select this to enable the ST-Ericsson AB8500 power management IC RTC
1284 support. This chip contains a battery- and capacitor-backed RTC.
1287 tristate "IBM OPAL RTC driver"
1288 depends on PPC_POWERNV
1291 If you say yes here you get support for the PowerNV platform RTC
1292 driver based on OPAL interfaces.
1294 This driver can also be built as a module. If so, the module
1295 will be called rtc-opal.
1297 config RTC_DRV_ZYNQMP
1298 tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1301 If you say yes here you get support for the RTC controller found on
1302 Xilinx Zynq Ultrascale+ MPSoC.
1304 config RTC_DRV_CROS_EC
1305 tristate "Chrome OS EC RTC driver"
1308 If you say yes here you will get support for the
1309 Chrome OS Embedded Controller's RTC.
1311 This driver can also be built as a module. If so, the module
1312 will be called rtc-cros-ec.
1314 comment "on-CPU RTC drivers"
1316 config RTC_DRV_ASM9260
1317 tristate "Alphascale asm9260 RTC"
1318 depends on MACH_ASM9260 || COMPILE_TEST
1320 If you say yes here you get support for the RTC on the
1321 Alphascale asm9260 SoC.
1323 This driver can also be built as a module. If so, the module
1324 will be called rtc-asm9260.
1326 config RTC_DRV_DAVINCI
1327 tristate "TI DaVinci RTC"
1328 depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1330 If you say yes here you get support for the RTC on the
1331 DaVinci platforms (DM365).
1333 This driver can also be built as a module. If so, the module
1334 will be called rtc-davinci.
1336 config RTC_DRV_DIGICOLOR
1337 tristate "Conexant Digicolor RTC"
1338 depends on ARCH_DIGICOLOR || COMPILE_TEST
1340 If you say yes here you get support for the RTC on Conexant
1341 Digicolor platforms. This currently includes the CX92755 SoC.
1343 This driver can also be built as a module. If so, the module
1344 will be called rtc-digicolor.
1346 config RTC_DRV_IMXDI
1347 tristate "Freescale IMX DryIce Real Time Clock"
1350 Support for Freescale IMX DryIce RTC
1352 This driver can also be built as a module, if so, the module
1353 will be called "rtc-imxdi".
1355 config RTC_DRV_FSL_FTM_ALARM
1356 tristate "Freescale FlexTimer alarm timer"
1357 depends on ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST
1359 For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A,
1360 LS1088A, LS208xA, we can use FTM as the wakeup source.
1362 Say y here to enable FTM alarm support. The FTM alarm provides
1363 alarm functions for wakeup system from deep sleep.
1365 This driver can also be built as a module, if so, the module
1366 will be called "rtc-fsl-ftm-alarm".
1368 config RTC_DRV_MESON
1369 tristate "Amlogic Meson RTC"
1370 depends on (ARM && ARCH_MESON) || COMPILE_TEST
1373 Support for the RTC block on the Amlogic Meson6, Meson8, Meson8b
1376 This driver can also be built as a module, if so, the module
1377 will be called "rtc-meson".
1379 config RTC_DRV_MESON_VRTC
1380 tristate "Amlogic Meson Virtual RTC"
1381 depends on ARCH_MESON || COMPILE_TEST
1382 default m if ARCH_MESON
1384 If you say yes here you will get support for the
1385 Virtual RTC of Amlogic SoCs.
1387 This driver can also be built as a module. If so, the module
1388 will be called rtc-meson-vrtc.
1391 tristate "TI OMAP Real Time Clock"
1392 depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1395 select GENERIC_PINCONF
1397 Say "yes" here to support the on chip real time clock
1398 present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1400 This driver can also be built as a module, if so, module
1401 will be called rtc-omap.
1406 This will include RTC support for Samsung SoCs. If
1407 you want to include RTC support for any machine, kindly
1408 select this in the respective mach-XXXX/Kconfig file.
1411 tristate "Samsung S3C series SoC RTC"
1412 depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1414 RTC (Realtime Clock) driver for the clock inbuilt into the
1415 Samsung S3C24XX series of SoCs. This can provide periodic
1416 interrupt rates from 1Hz to 64Hz for user programs, and
1419 The driver currently supports the common features on all the
1420 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1423 This driver can also be build as a module. If so, the module
1424 will be called rtc-s3c.
1426 config RTC_DRV_EP93XX
1427 tristate "Cirrus Logic EP93XX"
1428 depends on ARCH_EP93XX || COMPILE_TEST
1430 If you say yes here you get support for the
1431 RTC embedded in the Cirrus Logic EP93XX processors.
1433 This driver can also be built as a module. If so, the module
1434 will be called rtc-ep93xx.
1436 config RTC_DRV_SA1100
1437 tristate "SA11x0/PXA2xx/PXA910"
1438 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1440 If you say Y here you will get access to the real time clock
1441 built into your SA11x0 or PXA2xx CPU.
1443 To compile this driver as a module, choose M here: the
1444 module will be called rtc-sa1100.
1447 tristate "SuperH On-Chip RTC"
1448 depends on SUPERH || ARCH_RENESAS
1450 Say Y here to enable support for the on-chip RTC found in
1451 most SuperH processors. This RTC is also found in RZ/A SoCs.
1453 To compile this driver as a module, choose M here: the
1454 module will be called rtc-sh.
1456 config RTC_DRV_VR41XX
1457 tristate "NEC VR41XX"
1458 depends on CPU_VR41XX || COMPILE_TEST
1460 If you say Y here you will get access to the real time clock
1461 built into your NEC VR41XX CPU.
1463 To compile this driver as a module, choose M here: the
1464 module will be called rtc-vr41xx.
1466 config RTC_DRV_PL030
1467 tristate "ARM AMBA PL030 RTC"
1470 If you say Y here you will get access to ARM AMBA
1471 PrimeCell PL030 RTC found on certain ARM SOCs.
1473 To compile this driver as a module, choose M here: the
1474 module will be called rtc-pl030.
1476 config RTC_DRV_PL031
1477 tristate "ARM AMBA PL031 RTC"
1480 If you say Y here you will get access to ARM AMBA
1481 PrimeCell PL031 RTC found on certain ARM SOCs.
1483 To compile this driver as a module, choose M here: the
1484 module will be called rtc-pl031.
1486 config RTC_DRV_AT91RM9200
1487 tristate "AT91RM9200 or some AT91SAM9 RTC"
1488 depends on ARCH_AT91 || COMPILE_TEST
1491 Driver for the internal RTC (Realtime Clock) module found on
1492 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
1493 this is powered by the backup power supply.
1495 config RTC_DRV_AT91SAM9
1496 tristate "AT91SAM9 RTT as RTC"
1497 depends on ARCH_AT91 || COMPILE_TEST
1498 depends on OF && HAS_IOMEM
1501 Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1502 can be used as an RTC thanks to the backup power supply (e.g. a
1503 small coin cell battery) which keeps this block and the GPBR
1504 (General Purpose Backup Registers) block powered when the device
1506 Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1507 probably want to use the real RTC block instead of the "RTT as an
1510 config RTC_DRV_AU1XXX
1511 tristate "Au1xxx Counter0 RTC support"
1512 depends on MIPS_ALCHEMY
1514 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1515 counter) to be used as a RTC.
1517 This driver can also be built as a module. If so, the module
1518 will be called rtc-au1xxx.
1520 config RTC_DRV_RS5C313
1521 tristate "Ricoh RS5C313"
1522 depends on SH_LANDISK
1524 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1526 config RTC_DRV_GENERIC
1527 tristate "Generic RTC support"
1528 # Please consider writing a new RTC driver instead of using the generic
1530 depends on PARISC || M68K || PPC || SUPERH || COMPILE_TEST
1532 Say Y or M here to enable RTC support on systems using the generic
1533 RTC abstraction. If you do not know what you are doing, you should
1537 tristate "PXA27x/PXA3xx"
1539 select RTC_DRV_SA1100
1541 If you say Y here you will get access to the real time clock
1542 built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1543 consisting of an SA1100 compatible RTC and the extended PXA RTC.
1545 This RTC driver uses PXA RTC registers available since pxa27x
1546 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1548 config RTC_DRV_VT8500
1549 tristate "VIA/WonderMedia 85xx SoC RTC"
1550 depends on ARCH_VT8500 || COMPILE_TEST
1552 If you say Y here you will get access to the real time clock
1553 built into your VIA VT8500 SoC or its relatives.
1556 config RTC_DRV_SUN4V
1557 bool "SUN4V Hypervisor RTC"
1560 If you say Y here you will get support for the Hypervisor
1561 based RTC on SUN4V systems.
1563 config RTC_DRV_SUN6I
1564 bool "Allwinner A31 RTC"
1565 default MACH_SUN6I || MACH_SUN8I
1566 depends on COMMON_CLK
1567 depends on ARCH_SUNXI || COMPILE_TEST
1569 If you say Y here you will get support for the RTC found in
1570 some Allwinner SoCs like the A31 or the A64.
1572 config RTC_DRV_SUNXI
1573 tristate "Allwinner sun4i/sun7i RTC"
1574 depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1576 If you say Y here you will get support for the RTC found on
1579 config RTC_DRV_STARFIRE
1583 If you say Y here you will get support for the RTC found on
1586 config RTC_DRV_TX4939
1587 tristate "TX4939 SoC"
1588 depends on SOC_TX4939 || COMPILE_TEST
1590 Driver for the internal RTC (Realtime Clock) module found on
1594 tristate "Marvell SoC RTC"
1595 depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1597 If you say yes here you will get support for the in-chip RTC
1598 that can be found in some of Marvell's SoC devices, such as
1599 the Kirkwood 88F6281 and 88F6192.
1601 This driver can also be built as a module. If so, the module
1602 will be called rtc-mv.
1604 config RTC_DRV_ARMADA38X
1605 tristate "Armada 38x Marvell SoC RTC"
1606 depends on ARCH_MVEBU || COMPILE_TEST
1608 If you say yes here you will get support for the in-chip RTC
1609 that can be found in the Armada 38x Marvell's SoC device
1611 This driver can also be built as a module. If so, the module
1612 will be called armada38x-rtc.
1614 config RTC_DRV_CADENCE
1615 tristate "Cadence RTC driver"
1616 depends on OF && HAS_IOMEM
1618 If you say Y here you will get access to Cadence RTC IP
1619 found on certain SOCs.
1621 To compile this driver as a module, choose M here: the
1622 module will be called rtc-cadence.
1624 config RTC_DRV_FTRTC010
1625 tristate "Faraday Technology FTRTC010 RTC"
1626 depends on HAS_IOMEM
1629 If you say Y here you will get support for the
1630 Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
1632 This driver can also be built as a module. If so, the module
1633 will be called rtc-ftrtc010.
1639 If you say yes here you will get support for the RTC on PS3.
1641 This driver can also be built as a module. If so, the module
1642 will be called rtc-ps3.
1644 config RTC_DRV_COH901331
1645 tristate "ST-Ericsson COH 901 331 RTC"
1646 depends on ARCH_U300 || COMPILE_TEST
1648 If you say Y here you will get access to ST-Ericsson
1649 COH 901 331 RTC clock found in some ST-Ericsson Mobile
1652 This driver can also be built as a module. If so, the module
1653 will be called "rtc-coh901331".
1657 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1658 depends on ARCH_MXS || COMPILE_TEST
1661 If you say yes here you will get support for the onboard
1662 STMP3xxx/i.MX23/i.MX28 RTC.
1664 This driver can also be built as a module. If so, the module
1665 will be called rtc-stmp3xxx.
1671 If you say Y here you will get support for the RTC found on
1672 the PCAP2 ASIC used on some Motorola phones.
1674 config RTC_DRV_MC13XXX
1675 depends on MFD_MC13XXX
1676 tristate "Freescale MC13xxx RTC"
1678 This enables support for the RTCs found on Freescale's PMICs
1679 MC13783 and MC13892.
1681 config RTC_DRV_MPC5121
1682 tristate "Freescale MPC5121 built-in RTC"
1683 depends on PPC_MPC512x || PPC_MPC52xx
1685 If you say yes here you will get support for the
1686 built-in RTC on MPC5121 or on MPC5200.
1688 This driver can also be built as a module. If so, the module
1689 will be called rtc-mpc5121.
1691 config RTC_DRV_JZ4740
1692 tristate "Ingenic JZ4740 SoC"
1693 depends on MIPS || COMPILE_TEST
1696 If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1699 This driver can also be built as a module. If so, the module
1700 will be called rtc-jz4740.
1702 config RTC_DRV_LPC24XX
1703 tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1704 depends on ARCH_LPC18XX || COMPILE_TEST
1705 depends on OF && HAS_IOMEM
1707 This enables support for the NXP RTC found which can be found on
1708 NXP LPC178x/18xx/408x/43xx devices.
1710 If you have one of the devices above enable this driver to use
1711 the hardware RTC. This driver can also be built as a module. If
1712 so, the module will be called rtc-lpc24xx.
1714 config RTC_DRV_LPC32XX
1715 depends on ARCH_LPC32XX || COMPILE_TEST
1716 tristate "NXP LPC32XX RTC"
1718 This enables support for the NXP RTC in the LPC32XX
1720 This driver can also be built as a module. If so, the module
1721 will be called rtc-lpc32xx.
1723 config RTC_DRV_PM8XXX
1724 tristate "Qualcomm PMIC8XXX RTC"
1725 depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1727 If you say yes here you get support for the
1728 Qualcomm PMIC8XXX RTC.
1730 To compile this driver as a module, choose M here: the
1731 module will be called rtc-pm8xxx.
1733 config RTC_DRV_TEGRA
1734 tristate "NVIDIA Tegra Internal RTC driver"
1735 depends on ARCH_TEGRA || COMPILE_TEST
1737 If you say yes here you get support for the
1738 Tegra 200 series internal RTC module.
1740 This drive can also be built as a module. If so, the module
1741 will be called rtc-tegra.
1743 config RTC_DRV_LOONGSON1
1744 tristate "loongson1 RTC support"
1745 depends on MACH_LOONGSON32
1747 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1748 counter) to be used as a RTC.
1750 This driver can also be built as a module. If so, the module
1751 will be called rtc-ls1x.
1754 tristate "Freescale MXC Real Time Clock"
1757 If you say yes here you get support for the Freescale MXC
1760 This driver can also be built as a module, if so, the module
1761 will be called "rtc-mxc".
1763 config RTC_DRV_MXC_V2
1764 tristate "Freescale MXC Real Time Clock for i.MX53"
1767 If you say yes here you get support for the Freescale MXC
1768 SRTC module in i.MX53 processor.
1770 This driver can also be built as a module, if so, the module
1771 will be called "rtc-mxc_v2".
1774 tristate "Freescale SNVS RTC support"
1776 depends on ARCH_MXC || COMPILE_TEST
1777 depends on HAS_IOMEM
1780 If you say yes here you get support for the Freescale SNVS
1781 Low Power (LP) RTC module.
1783 This driver can also be built as a module, if so, the module
1784 will be called "rtc-snvs".
1786 config RTC_DRV_IMX_SC
1788 depends on HAVE_ARM_SMCCC
1789 tristate "NXP i.MX System Controller RTC support"
1791 If you say yes here you get support for the NXP i.MX System
1792 Controller RTC module.
1794 config RTC_DRV_SIRFSOC
1795 tristate "SiRFSOC RTC"
1796 depends on ARCH_SIRF
1798 Say "yes" here to support the real time clock on SiRF SOC chips.
1799 This driver can also be built as a module called rtc-sirfsoc.
1801 config RTC_DRV_ST_LPC
1802 tristate "STMicroelectronics LPC RTC"
1806 Say Y here to include STMicroelectronics Low Power Controller
1807 (LPC) based RTC support.
1809 To compile this driver as a module, choose M here: the
1810 module will be called rtc-st-lpc.
1812 config RTC_DRV_MOXART
1813 tristate "MOXA ART RTC"
1814 depends on ARCH_MOXART || COMPILE_TEST
1816 If you say yes here you get support for the MOXA ART
1819 This driver can also be built as a module. If so, the module
1820 will be called rtc-moxart
1822 config RTC_DRV_MT2712
1823 tristate "MediaTek MT2712 SoC based RTC"
1824 depends on ARCH_MEDIATEK || COMPILE_TEST
1826 This enables support for the real time clock built in the MediaTek
1829 This drive can also be built as a module. If so, the module
1830 will be called rtc-mt2712.
1832 config RTC_DRV_MT6397
1833 tristate "MediaTek PMIC based RTC"
1834 depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1836 This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
1837 MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1838 MediaTek(R) RTC driver.
1840 If you want to use MediaTek(R) RTC interface, select Y or M here.
1842 config RTC_DRV_MT7622
1843 tristate "MediaTek SoC based RTC"
1844 depends on ARCH_MEDIATEK || COMPILE_TEST
1846 This enables support for the real time clock built in the MediaTek
1849 This drive can also be built as a module. If so, the module
1850 will be called rtc-mt7622.
1852 config RTC_DRV_XGENE
1853 tristate "APM X-Gene RTC"
1854 depends on HAS_IOMEM
1855 depends on ARCH_XGENE || COMPILE_TEST
1857 If you say yes here you get support for the APM X-Gene SoC real time
1860 This driver can also be built as a module, if so, the module
1861 will be called "rtc-xgene".
1863 config RTC_DRV_PIC32
1864 tristate "Microchip PIC32 RTC"
1865 depends on MACH_PIC32
1868 If you say yes here you get support for the PIC32 RTC module.
1870 This driver can also be built as a module. If so, the module
1871 will be called rtc-pic32
1873 config RTC_DRV_R7301
1874 tristate "EPSON TOYOCOM RTC-7301SF/DG"
1876 depends on OF && HAS_IOMEM
1878 If you say yes here you get support for the EPSON TOYOCOM
1879 RTC-7301SF/DG chips.
1881 This driver can also be built as a module. If so, the module
1882 will be called rtc-r7301.
1884 config RTC_DRV_STM32
1885 tristate "STM32 RTC"
1887 depends on ARCH_STM32 || COMPILE_TEST
1889 If you say yes here you get support for the STM32 On-Chip
1892 This driver can also be built as a module, if so, the module
1893 will be called "rtc-stm32".
1895 config RTC_DRV_CPCAP
1896 depends on MFD_CPCAP
1897 tristate "Motorola CPCAP RTC"
1899 Say y here for CPCAP rtc found on some Motorola phones
1900 and tablets such as Droid 4.
1902 config RTC_DRV_RTD119X
1903 bool "Realtek RTD129x RTC"
1904 depends on ARCH_REALTEK || COMPILE_TEST
1905 default ARCH_REALTEK
1907 If you say yes here, you get support for the RTD1295 SoC
1910 config RTC_DRV_ASPEED
1911 tristate "ASPEED RTC"
1913 depends on ARCH_ASPEED || COMPILE_TEST
1915 If you say yes here you get support for the ASPEED BMC SoC real time
1918 This driver can also be built as a module, if so, the module
1919 will be called "rtc-aspeed".
1921 comment "HID Sensor RTC drivers"
1923 config RTC_DRV_HID_SENSOR_TIME
1924 tristate "HID Sensor Time"
1926 depends on HID_SENSOR_HUB && IIO
1927 select HID_SENSOR_IIO_COMMON
1929 Say yes here to build support for the HID Sensors of type Time.
1930 This drivers makes such sensors available as RTCs.
1932 If this driver is compiled as a module, it will be named
1933 rtc-hid-sensor-time.
1935 config RTC_DRV_GOLDFISH
1936 tristate "Goldfish Real Time Clock"
1937 depends on OF && HAS_IOMEM
1938 depends on GOLDFISH || COMPILE_TEST
1940 Say yes to enable RTC driver for the Goldfish based virtual platform.
1942 Goldfish is a code name for the virtual platform developed by Google
1943 for Android emulation.
1945 config RTC_DRV_WILCO_EC
1946 tristate "Wilco EC RTC"
1950 If you say yes here, you get read/write support for the Real Time
1951 Clock on the Wilco Embedded Controller (Wilco is a kind of Chromebook)
1953 This can also be built as a module. If so, the module will
1954 be named "rtc_wilco_ec".