2 # RTC class/drivers configuration
8 config RTC_MC146818_LIB
13 bool "Real Time Clock"
15 depends on !S390 && !UML
18 Generic RTC class support. If you say yes here, you will
19 be allowed to plug one or more RTCs to your system. You will
20 probably want to enable one or more of the interfaces below.
25 bool "Set system time from RTC on startup and resume"
28 If you say yes here, the system time (wall clock) will be set using
29 the value read from a specified RTC device. This is useful to avoid
30 unnecessary fsck runs at boot time, and to network better.
32 config RTC_HCTOSYS_DEVICE
33 string "RTC used to set the system time"
34 depends on RTC_HCTOSYS
37 The RTC device that will be used to (re)initialize the system
38 clock, usually rtc0. Initialization is done when the system
39 starts up, and when it resumes from a low power state. This
40 device should record time in UTC, since the kernel won't do
43 The driver for this RTC device must be loaded before late_initcall
44 functions run, so it must usually be statically linked.
46 This clock should be battery-backed, so that it reads the correct
47 time when the system boots from a power-off state. Otherwise, your
48 system will need an external clock source (like an NTP server).
50 If the clock you specify here is not battery backed, it may still
51 be useful to reinitialize system time when resuming from system
52 sleep states. Do not specify an RTC here unless it stays powered
53 during all this system's supported sleep states.
56 bool "Set the RTC time based on NTP synchronization"
59 If you say yes here, the system time (wall clock) will be stored
60 in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
61 minutes if userspace reports synchronized NTP status.
63 config RTC_SYSTOHC_DEVICE
64 string "RTC used to synchronize NTP adjustment"
65 depends on RTC_SYSTOHC
66 default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
69 The RTC device used for NTP synchronization. The main difference
70 between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this
71 one can sleep when setting time, because it runs in the workqueue
75 bool "RTC debug support"
77 Say yes here to enable debugging support in the RTC framework
78 and individual RTC drivers.
80 comment "RTC interfaces"
83 bool "/sys/class/rtc/rtcN (sysfs)"
87 Say yes here if you want to use your RTCs using sysfs interfaces,
88 /sys/class/rtc/rtc0 through /sys/.../rtcN.
93 bool "/proc/driver/rtc (procfs for rtcN)"
97 Say yes here if you want to use your system clock RTC through
98 the proc interface, /proc/driver/rtc.
99 Other RTCs will not be available through that API.
100 If there is no RTC for the system clock, then the first RTC(rtc0)
106 bool "/dev/rtcN (character devices)"
109 Say yes here if you want to use your RTCs using the /dev
110 interfaces, which "udev" sets up as /dev/rtc0 through
113 You may want to set up a symbolic link so one of these
114 can be accessed as /dev/rtc, which is a name
115 expected by "hwclock" and some other programs. Recent
116 versions of "udev" are known to set up the symlink for you.
120 config RTC_INTF_DEV_UIE_EMUL
121 bool "RTC UIE emulation on dev interface"
122 depends on RTC_INTF_DEV
124 Provides an emulation for RTC_UIE if the underlying rtc chip
125 driver does not expose RTC_UIE ioctls. Those requests generate
126 once-per-second update interrupts, used for synchronization.
128 The emulation code will read the time from the hardware
129 clock several times per second, please enable this option
130 only if you know that you really need it.
133 tristate "Test driver/device"
135 If you say yes here you get support for the
136 RTC test driver. It's a software RTC which can be
137 used to test the RTC subsystem APIs. It gets
138 the time from the system clock.
139 You want this driver only if you are doing development
140 on the RTC subsystem. Please read the source code
143 This driver can also be built as a module. If so, the module
144 will be called rtc-test.
146 comment "I2C RTC drivers"
150 config RTC_DRV_88PM860X
151 tristate "Marvell 88PM860x"
152 depends on MFD_88PM860X
154 If you say yes here you get support for RTC function in Marvell
157 This driver can also be built as a module. If so, the module
158 will be called rtc-88pm860x.
160 config RTC_DRV_88PM80X
161 tristate "Marvell 88PM80x"
162 depends on MFD_88PM800
164 If you say yes here you get support for RTC function in Marvell
167 This driver can also be built as a module. If so, the module
168 will be called rtc-88pm80x.
170 config RTC_DRV_ABB5ZES3
172 tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
174 If you say yes here you get support for the Abracon
175 AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
177 This driver can also be built as a module. If so, the module
178 will be called rtc-ab-b5ze-s3.
180 config RTC_DRV_ABX80X
181 tristate "Abracon ABx80x"
183 If you say yes here you get support for Abracon AB080X and AB180X
184 families of ultra-low-power battery- and capacitor-backed real-time
187 This driver can also be built as a module. If so, the module
188 will be called rtc-abx80x.
191 tristate "X-Powers AC100"
194 If you say yes here you get support for the real-time clock found
195 in X-Powers AC100 family peripheral ICs.
197 This driver can also be built as a module. If so, the module
198 will be called rtc-ac100.
200 config RTC_DRV_AS3722
201 tristate "ams AS3722 RTC driver"
202 depends on MFD_AS3722
204 If you say yes here you get support for the RTC of ams AS3722 PMIC
207 This driver can also be built as a module. If so, the module
208 will be called rtc-as3722.
210 config RTC_DRV_DS1307
211 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025, ISL12057"
213 If you say yes here you get support for various compatible RTC
214 chips (often with battery backup) connected with I2C. This driver
215 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
216 EPSON RX-8025, Intersil ISL12057 and probably other chips. In some
217 cases the RTC must already have been initialized (by manufacturing or
220 The first seven registers on these chips hold an RTC, and other
221 registers may add features such as NVRAM, a trickle charger for
222 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
223 sysfs, but other chip features may not be available.
225 This driver can also be built as a module. If so, the module
226 will be called rtc-ds1307.
228 config RTC_DRV_DS1307_HWMON
229 bool "HWMON support for rtc-ds1307"
230 depends on RTC_DRV_DS1307 && HWMON
231 depends on !(RTC_DRV_DS1307=y && HWMON=m)
234 Say Y here if you want to expose temperature sensor data on
235 rtc-ds1307 (only DS3231)
237 config RTC_DRV_DS1307_CENTURY
238 bool "Century bit support for rtc-ds1307"
239 depends on RTC_DRV_DS1307
242 The DS1307 driver suffered from a bug where it was enabling the
243 century bit inconditionnally but never used it when reading the time.
244 It made the driver unable to support dates beyond 2099.
245 Setting this option will add proper support for the century bit but if
246 the time was previously set using a kernel predating this option,
247 reading the date will return a date in the next century.
248 To solve that, you could boot a kernel without this option set, set
249 the RTC date and then boot a kernel with this option set.
251 config RTC_DRV_DS1374
252 tristate "Dallas/Maxim DS1374"
254 If you say yes here you get support for Dallas Semiconductor
255 DS1374 real-time clock chips. If an interrupt is associated
256 with the device, the alarm functionality is supported.
258 This driver can also be built as a module. If so, the module
259 will be called rtc-ds1374.
261 config RTC_DRV_DS1374_WDT
262 bool "Dallas/Maxim DS1374 watchdog timer"
263 depends on RTC_DRV_DS1374
265 If you say Y here you will get support for the
266 watchdog timer in the Dallas Semiconductor DS1374
267 real-time clock chips.
269 config RTC_DRV_DS1672
270 tristate "Dallas/Maxim DS1672"
272 If you say yes here you get support for the
273 Dallas/Maxim DS1672 timekeeping chip.
275 This driver can also be built as a module. If so, the module
276 will be called rtc-ds1672.
278 config RTC_DRV_HYM8563
279 tristate "Haoyu Microelectronics HYM8563"
282 Say Y to enable support for the HYM8563 I2C RTC chip. Apart
283 from the usual rtc functions it provides a clock output of
286 This driver can also be built as a module. If so, the module
287 will be called rtc-hym8563.
289 config RTC_DRV_LP8788
290 tristate "TI LP8788 RTC driver"
291 depends on MFD_LP8788
293 Say Y to enable support for the LP8788 RTC/ALARM driver.
295 config RTC_DRV_MAX6900
296 tristate "Maxim MAX6900"
298 If you say yes here you will get support for the
299 Maxim MAX6900 I2C RTC chip.
301 This driver can also be built as a module. If so, the module
302 will be called rtc-max6900.
304 config RTC_DRV_MAX8907
305 tristate "Maxim MAX8907"
306 depends on MFD_MAX8907
308 If you say yes here you will get support for the
309 RTC of Maxim MAX8907 PMIC.
311 This driver can also be built as a module. If so, the module
312 will be called rtc-max8907.
314 config RTC_DRV_MAX8925
315 tristate "Maxim MAX8925"
316 depends on MFD_MAX8925
318 If you say yes here you will get support for the
319 RTC of Maxim MAX8925 PMIC.
321 This driver can also be built as a module. If so, the module
322 will be called rtc-max8925.
324 config RTC_DRV_MAX8998
325 tristate "Maxim MAX8998"
326 depends on MFD_MAX8998
328 If you say yes here you will get support for the
329 RTC of Maxim MAX8998 PMIC.
331 This driver can also be built as a module. If so, the module
332 will be called rtc-max8998.
334 config RTC_DRV_MAX8997
335 tristate "Maxim MAX8997"
336 depends on MFD_MAX8997
338 If you say yes here you will get support for the
339 RTC of Maxim MAX8997 PMIC.
341 This driver can also be built as a module. If so, the module
342 will be called rtc-max8997.
344 config RTC_DRV_MAX77686
345 tristate "Maxim MAX77686"
346 depends on MFD_MAX77686 || MFD_MAX77620
348 If you say yes here you will get support for the
349 RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
351 This driver can also be built as a module. If so, the module
352 will be called rtc-max77686.
355 tristate "Rockchip RK808/RK818 RTC"
358 If you say yes here you will get support for the
359 RTC of RK808 and RK818 PMIC.
361 This driver can also be built as a module. If so, the module
362 will be called rk808-rtc.
364 config RTC_DRV_RS5C372
365 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
367 If you say yes here you get support for the
368 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
370 This driver can also be built as a module. If so, the module
371 will be called rtc-rs5c372.
373 config RTC_DRV_ISL1208
374 tristate "Intersil ISL1208"
376 If you say yes here you get support for the
377 Intersil ISL1208 RTC chip.
379 This driver can also be built as a module. If so, the module
380 will be called rtc-isl1208.
382 config RTC_DRV_ISL12022
383 tristate "Intersil ISL12022"
385 If you say yes here you get support for the
386 Intersil ISL12022 RTC chip.
388 This driver can also be built as a module. If so, the module
389 will be called rtc-isl12022.
392 tristate "Xicor/Intersil X1205"
394 If you say yes here you get support for the
395 Xicor/Intersil X1205 RTC chip.
397 This driver can also be built as a module. If so, the module
398 will be called rtc-x1205.
400 config RTC_DRV_PCF8523
401 tristate "NXP PCF8523"
403 If you say yes here you get support for the NXP PCF8523 RTC
406 This driver can also be built as a module. If so, the module
407 will be called rtc-pcf8523.
409 config RTC_DRV_PCF85063
410 tristate "NXP PCF85063"
412 If you say yes here you get support for the PCF85063 RTC chip
414 This driver can also be built as a module. If so, the module
415 will be called rtc-pcf85063.
417 config RTC_DRV_PCF8563
418 tristate "Philips PCF8563/Epson RTC8564"
420 If you say yes here you get support for the
421 Philips PCF8563 RTC chip. The Epson RTC8564
424 This driver can also be built as a module. If so, the module
425 will be called rtc-pcf8563.
427 config RTC_DRV_PCF8583
428 tristate "Philips PCF8583"
430 If you say yes here you get support for the Philips PCF8583
431 RTC chip found on Acorn RiscPCs. This driver supports the
432 platform specific method of retrieving the current year from
433 the RTC's SRAM. It will work on other platforms with the same
434 chip, but the year will probably have to be tweaked.
436 This driver can also be built as a module. If so, the module
437 will be called rtc-pcf8583.
439 config RTC_DRV_M41T80
440 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
442 If you say Y here you will get support for the ST M41T60
443 and M41T80 RTC chips series. Currently, the following chips are
444 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
445 M41ST85, M41ST87, and MicroCrystal RV4162.
447 This driver can also be built as a module. If so, the module
448 will be called rtc-m41t80.
450 config RTC_DRV_M41T80_WDT
451 bool "ST M41T65/M41T80 series RTC watchdog timer"
452 depends on RTC_DRV_M41T80
454 If you say Y here you will get support for the
455 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
458 tristate "TI BQ32000"
460 If you say Y here you will get support for the TI
461 BQ32000 I2C RTC chip.
463 This driver can also be built as a module. If so, the module
464 will be called rtc-bq32k.
466 config RTC_DRV_DM355EVM
467 tristate "TI DaVinci DM355 EVM RTC"
468 depends on MFD_DM355EVM_MSP
470 Supports the RTC firmware in the MSP430 on the DM355 EVM.
472 config RTC_DRV_TWL92330
473 bool "TI TWL92330/Menelaus"
476 If you say yes here you get support for the RTC on the
477 TWL92330 "Menelaus" power management chip, used with OMAP2
478 platforms. The support is integrated with the rest of
479 the Menelaus driver; it's not separate module.
481 config RTC_DRV_TWL4030
482 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
483 depends on TWL4030_CORE
485 If you say yes here you get support for the RTC on the
486 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
488 This driver can also be built as a module. If so, the module
489 will be called rtc-twl.
491 config RTC_DRV_PALMAS
492 tristate "TI Palmas RTC driver"
493 depends on MFD_PALMAS
495 If you say yes here you get support for the RTC of TI PALMA series PMIC
498 This driver can also be built as a module. If so, the module
499 will be called rtc-palma.
501 config RTC_DRV_TPS6586X
502 tristate "TI TPS6586X RTC driver"
503 depends on MFD_TPS6586X
505 TI Power Management IC TPS6586X supports RTC functionality
506 along with alarm. This driver supports the RTC driver for
507 the TPS6586X RTC module.
509 config RTC_DRV_TPS65910
510 tristate "TI TPS65910 RTC driver"
511 depends on RTC_CLASS && MFD_TPS65910
513 If you say yes here you get support for the RTC on the
516 This driver can also be built as a module. If so, the module
517 will be called rtc-tps65910.
519 config RTC_DRV_TPS80031
520 tristate "TI TPS80031/TPS80032 RTC driver"
521 depends on MFD_TPS80031
523 TI Power Management IC TPS80031 supports RTC functionality
524 along with alarm. This driver supports the RTC driver for
525 the TPS80031 RTC module.
527 config RTC_DRV_RC5T583
528 tristate "RICOH 5T583 RTC driver"
529 depends on MFD_RC5T583
531 If you say yes here you get support for the RTC on the
534 This driver can also be built as a module. If so, the module
535 will be called rtc-rc5t583.
537 config RTC_DRV_S35390A
538 tristate "Seiko Instruments S-35390A"
541 If you say yes here you will get support for the Seiko
542 Instruments S-35390A.
544 This driver can also be built as a module. If so the module
545 will be called rtc-s35390a.
547 config RTC_DRV_FM3130
548 tristate "Ramtron FM3130"
550 If you say Y here you will get support for the
551 Ramtron FM3130 RTC chips.
552 Ramtron FM3130 is a chip with two separate devices inside,
553 RTC clock and FRAM. This driver provides only RTC functionality.
555 This driver can also be built as a module. If so the module
556 will be called rtc-fm3130.
558 config RTC_DRV_RX8010
559 tristate "Epson RX8010SJ"
562 If you say yes here you get support for the Epson RX8010SJ RTC
565 This driver can also be built as a module. If so, the module
566 will be called rtc-rx8010.
568 config RTC_DRV_RX8581
569 tristate "Epson RX-8581"
571 If you say yes here you will get support for the Epson RX-8581.
573 This driver can also be built as a module. If so the module
574 will be called rtc-rx8581.
576 config RTC_DRV_RX8025
577 tristate "Epson RX-8025SA/NB"
579 If you say yes here you get support for the Epson
580 RX-8025SA/NB RTC chips.
582 This driver can also be built as a module. If so, the module
583 will be called rtc-rx8025.
585 config RTC_DRV_EM3027
586 tristate "EM Microelectronic EM3027"
588 If you say yes here you get support for the EM
589 Microelectronic EM3027 RTC chips.
591 This driver can also be built as a module. If so, the module
592 will be called rtc-em3027.
594 config RTC_DRV_RV8803
595 tristate "Micro Crystal RV8803, Epson RX8900"
597 If you say yes here you get support for the Micro Crystal RV8803 and
598 Epson RX8900 RTC chips.
600 This driver can also be built as a module. If so, the module
601 will be called rtc-rv8803.
604 tristate "Samsung S2M/S5M series"
605 depends on MFD_SEC_CORE
607 If you say yes here you will get support for the
608 RTC of Samsung S2MPS14 and S5M PMIC series.
610 This driver can also be built as a module. If so, the module
611 will be called rtc-s5m.
615 comment "SPI RTC drivers"
619 config RTC_DRV_M41T93
622 If you say yes here you will get support for the
623 ST M41T93 SPI RTC chip.
625 This driver can also be built as a module. If so, the module
626 will be called rtc-m41t93.
628 config RTC_DRV_M41T94
631 If you say yes here you will get support for the
632 ST M41T94 SPI RTC chip.
634 This driver can also be built as a module. If so, the module
635 will be called rtc-m41t94.
637 config RTC_DRV_DS1302
638 tristate "Dallas/Maxim DS1302"
641 If you say yes here you get support for the Dallas DS1302 RTC chips.
643 This driver can also be built as a module. If so, the module
644 will be called rtc-ds1302.
646 config RTC_DRV_DS1305
647 tristate "Dallas/Maxim DS1305/DS1306"
649 Select this driver to get support for the Dallas/Maxim DS1305
650 and DS1306 real time clock chips. These support a trickle
651 charger, alarms, and NVRAM in addition to the clock.
653 This driver can also be built as a module. If so, the module
654 will be called rtc-ds1305.
656 config RTC_DRV_DS1343
658 tristate "Dallas/Maxim DS1343/DS1344"
660 If you say yes here you get support for the
661 Dallas/Maxim DS1343 and DS1344 real time clock chips.
662 Support for trickle charger, alarm is provided.
664 This driver can also be built as a module. If so, the module
665 will be called rtc-ds1343.
667 config RTC_DRV_DS1347
669 tristate "Dallas/Maxim DS1347"
671 If you say yes here you get support for the
672 Dallas/Maxim DS1347 chips.
674 This driver only supports the RTC feature, and not other chip
675 features such as alarms.
677 This driver can also be built as a module. If so, the module
678 will be called rtc-ds1347.
680 config RTC_DRV_DS1390
681 tristate "Dallas/Maxim DS1390/93/94"
683 If you say yes here you get support for the
684 Dallas/Maxim DS1390/93/94 chips.
686 This driver supports the RTC feature and trickle charging but not
687 other chip features such as alarms.
689 This driver can also be built as a module. If so, the module
690 will be called rtc-ds1390.
692 config RTC_DRV_MAX6916
693 tristate "Maxim MAX6916"
695 If you say yes here you will get support for the
696 Maxim MAX6916 SPI RTC chip.
698 This driver only supports the RTC feature, and not other chip
699 features such as alarms.
701 This driver can also be built as a module. If so, the module
702 will be called rtc-max6916.
705 tristate "Epson RTC-9701JE"
707 If you say yes here you will get support for the
708 Epson RTC-9701JE SPI RTC chip.
710 This driver can also be built as a module. If so, the module
711 will be called rtc-r9701.
713 config RTC_DRV_RX4581
714 tristate "Epson RX-4581"
716 If you say yes here you will get support for the Epson RX-4581.
718 This driver can also be built as a module. If so the module
719 will be called rtc-rx4581.
721 config RTC_DRV_RX6110
722 tristate "Epson RX-6110"
725 If you say yes here you will get support for the Epson RX-6610.
727 This driver can also be built as a module. If so the module
728 will be called rtc-rx6110.
730 config RTC_DRV_RS5C348
731 tristate "Ricoh RS5C348A/B"
733 If you say yes here you get support for the
734 Ricoh RS5C348A and RS5C348B RTC chips.
736 This driver can also be built as a module. If so, the module
737 will be called rtc-rs5c348.
739 config RTC_DRV_MAX6902
740 tristate "Maxim MAX6902"
742 If you say yes here you will get support for the
743 Maxim MAX6902 SPI RTC chip.
745 This driver can also be built as a module. If so, the module
746 will be called rtc-max6902.
748 config RTC_DRV_PCF2123
749 tristate "NXP PCF2123"
751 If you say yes here you get support for the NXP PCF2123
754 This driver can also be built as a module. If so, the module
755 will be called rtc-pcf2123.
757 config RTC_DRV_MCP795
758 tristate "Microchip MCP795"
760 If you say yes here you will get support for the Microchip MCP795.
762 This driver can also be built as a module. If so the module
763 will be called rtc-mcp795.
768 # Helper to resolve issues with configs that have SPI enabled but I2C
769 # modular. See SND_SOC_I2C_AND_SPI for more information
771 config RTC_I2C_AND_SPI
775 default y if SPI_MASTER=y
776 select REGMAP_I2C if I2C
777 select REGMAP_SPI if SPI_MASTER
779 comment "SPI and I2C RTC drivers"
781 config RTC_DRV_DS3232
782 tristate "Dallas/Maxim DS3232/DS3234"
783 depends on RTC_I2C_AND_SPI
785 If you say yes here you get support for Dallas Semiconductor
786 DS3232 and DS3234 real-time clock chips. If an interrupt is associated
787 with the device, the alarm functionality is supported.
789 This driver can also be built as a module. If so, the module
790 will be called rtc-ds3232.
792 config RTC_DRV_PCF2127
793 tristate "NXP PCF2127"
794 depends on RTC_I2C_AND_SPI
796 If you say yes here you get support for the NXP PCF2127/29 RTC
799 This driver can also be built as a module. If so, the module
800 will be called rtc-pcf2127.
802 config RTC_DRV_RV3029C2
803 tristate "Micro Crystal RV3029/3049"
804 depends on RTC_I2C_AND_SPI
806 If you say yes here you get support for the Micro Crystal
807 RV3029 and RV3049 RTC chips.
809 This driver can also be built as a module. If so, the module
810 will be called rtc-rv3029c2.
812 config RTC_DRV_RV3029_HWMON
813 bool "HWMON support for RV3029/3049"
814 depends on RTC_DRV_RV3029C2 && HWMON
815 depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
818 Say Y here if you want to expose temperature sensor data on
821 comment "Platform RTC drivers"
823 # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
824 # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
825 # global rtc_lock ... it's not yet just another platform_device.
828 tristate "PC-style 'CMOS'"
829 depends on X86 || ARM || M32R || PPC || MIPS || SPARC64 || MN10300
831 select RTC_MC146818_LIB
833 Say "yes" here to get direct support for the real time clock
834 found in every PC or ACPI-based system, and some other boards.
835 Specifically the original MC146818, compatibles like those in
836 PC south bridges, the DS12887 or M48T86, some multifunction
837 or LPC bus chips, and so on.
839 Your system will need to define the platform device used by
840 this driver, otherwise it won't be accessible. This means
841 you can safely enable this driver if you don't know whether
842 or not your board has this kind of hardware.
844 This driver can also be built as a module. If so, the module
845 will be called rtc-cmos.
848 bool "Alpha PC-style CMOS"
850 select RTC_MC146818_LIB
853 Direct support for the real-time clock found on every Alpha
854 system, specifically MC146818 compatibles. If in doubt, say Y.
857 tristate "Virtual RTC for Intel MID platforms"
858 depends on X86_INTEL_MID
859 default y if X86_INTEL_MID
862 Say "yes" here to get direct support for the real time clock
863 found on Moorestown platforms. The VRTC is a emulated RTC that
864 derives its clock source from a real RTC in the PMIC. The MC146818
865 style programming interface is mostly conserved, but any
866 updates are done via IPC calls to the system controller FW.
868 config RTC_DRV_DS1216
869 tristate "Dallas DS1216"
872 If you say yes here you get support for the Dallas DS1216 RTC chips.
874 config RTC_DRV_DS1286
875 tristate "Dallas DS1286"
878 If you say yes here you get support for the Dallas DS1286 RTC chips.
880 config RTC_DRV_DS1511
881 tristate "Dallas DS1511"
884 If you say yes here you get support for the
885 Dallas DS1511 timekeeping/watchdog chip.
887 This driver can also be built as a module. If so, the module
888 will be called rtc-ds1511.
890 config RTC_DRV_DS1553
891 tristate "Maxim/Dallas DS1553"
894 If you say yes here you get support for the
895 Maxim/Dallas DS1553 timekeeping chip.
897 This driver can also be built as a module. If so, the module
898 will be called rtc-ds1553.
900 config RTC_DRV_DS1685_FAMILY
901 tristate "Dallas/Maxim DS1685 Family"
903 If you say yes here you get support for the Dallas/Maxim DS1685
904 family of real time chips. This family includes the DS1685/DS1687,
905 DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
906 DS17885/DS17887 chips.
908 This driver can also be built as a module. If so, the module
909 will be called rtc-ds1685.
913 depends on RTC_DRV_DS1685_FAMILY
914 default RTC_DRV_DS1685
916 config RTC_DRV_DS1685
919 This enables support for the Dallas/Maxim DS1685/DS1687 real time
922 This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
923 systems, as well as EPPC-405-UC modules by electronic system design
926 config RTC_DRV_DS1689
929 This enables support for the Dallas/Maxim DS1689/DS1693 real time
932 This is an older RTC chip, supplanted by the DS1685/DS1687 above,
933 which supports a few minor features such as Vcc, Vbat, and Power
934 Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
936 It also works for the even older DS1688/DS1691 RTC chips, which are
937 virtually the same and carry the same model number. Both chips
938 have 114 bytes of user NVRAM.
940 config RTC_DRV_DS17285
941 bool "DS17285/DS17287"
943 This enables support for the Dallas/Maxim DS17285/DS17287 real time
946 This chip features 2kb of extended NV-SRAM. It may possibly be
947 found in some SGI O2 systems (rare).
949 config RTC_DRV_DS17485
950 bool "DS17485/DS17487"
952 This enables support for the Dallas/Maxim DS17485/DS17487 real time
955 This chip features 4kb of extended NV-SRAM.
957 config RTC_DRV_DS17885
958 bool "DS17885/DS17887"
960 This enables support for the Dallas/Maxim DS17885/DS17887 real time
963 This chip features 8kb of extended NV-SRAM.
967 config RTC_DS1685_PROC_REGS
968 bool "Display register values in /proc"
969 depends on RTC_DRV_DS1685_FAMILY && PROC_FS
971 Enable this to display a readout of all of the RTC registers in
972 /proc/drivers/rtc. Keep in mind that this can potentially lead
973 to lost interrupts, as reading Control Register C will clear
974 all pending IRQ flags.
976 Unless you are debugging this driver, choose N.
978 config RTC_DS1685_SYSFS_REGS
979 bool "SysFS access to RTC register bits"
980 depends on RTC_DRV_DS1685_FAMILY && SYSFS
982 Enable this to provide access to the RTC control register bits
983 in /sys. Some of the bits are read-write, others are read-only.
985 Keep in mind that reading Control C's bits automatically clears
986 all pending IRQ flags - this can cause lost interrupts.
988 If you know that you need access to these bits, choose Y, Else N.
990 config RTC_DRV_DS1742
991 tristate "Maxim/Dallas DS1742/1743"
994 If you say yes here you get support for the
995 Maxim/Dallas DS1742/1743 timekeeping chip.
997 This driver can also be built as a module. If so, the module
998 will be called rtc-ds1742.
1000 config RTC_DRV_DS2404
1001 tristate "Maxim/Dallas DS2404"
1003 If you say yes here you get support for the
1004 Dallas DS2404 RTC chip.
1006 This driver can also be built as a module. If so, the module
1007 will be called rtc-ds2404.
1009 config RTC_DRV_DA9052
1010 tristate "Dialog DA9052/DA9053 RTC"
1011 depends on PMIC_DA9052
1013 Say y here to support the RTC driver for Dialog Semiconductor
1014 DA9052-BC and DA9053-AA/Bx PMICs.
1016 config RTC_DRV_DA9055
1017 tristate "Dialog Semiconductor DA9055 RTC"
1018 depends on MFD_DA9055
1020 If you say yes here you will get support for the
1021 RTC of the Dialog DA9055 PMIC.
1023 This driver can also be built as a module. If so, the module
1024 will be called rtc-da9055
1026 config RTC_DRV_DA9063
1027 tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1028 depends on MFD_DA9063 || MFD_DA9062
1030 If you say yes here you will get support for the RTC subsystem
1031 for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1033 This driver can also be built as a module. If so, the module
1034 will be called "rtc-da9063".
1038 depends on EFI && !X86
1040 If you say yes here you will get support for the EFI
1043 This driver can also be built as a module. If so, the module
1044 will be called rtc-efi.
1046 config RTC_DRV_STK17TA8
1047 tristate "Simtek STK17TA8"
1048 depends on HAS_IOMEM
1050 If you say yes here you get support for the
1051 Simtek STK17TA8 timekeeping chip.
1053 This driver can also be built as a module. If so, the module
1054 will be called rtc-stk17ta8.
1056 config RTC_DRV_M48T86
1057 tristate "ST M48T86/Dallas DS12887"
1059 If you say Y here you will get support for the
1060 ST M48T86 and Dallas DS12887 RTC chips.
1062 This driver can also be built as a module. If so, the module
1063 will be called rtc-m48t86.
1065 config RTC_DRV_M48T35
1066 tristate "ST M48T35"
1067 depends on HAS_IOMEM
1069 If you say Y here you will get support for the
1072 This driver can also be built as a module, if so, the module
1073 will be called "rtc-m48t35".
1075 config RTC_DRV_M48T59
1076 tristate "ST M48T59/M48T08/M48T02"
1077 depends on HAS_IOMEM
1079 If you say Y here you will get support for the
1080 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1082 These chips are usually found in Sun SPARC and UltraSPARC
1085 This driver can also be built as a module, if so, the module
1086 will be called "rtc-m48t59".
1088 config RTC_DRV_MSM6242
1089 tristate "Oki MSM6242"
1090 depends on HAS_IOMEM
1092 If you say yes here you get support for the Oki MSM6242
1093 timekeeping chip. It is used in some Amiga models (e.g. A2000).
1095 This driver can also be built as a module. If so, the module
1096 will be called rtc-msm6242.
1098 config RTC_DRV_BQ4802
1099 tristate "TI BQ4802"
1100 depends on HAS_IOMEM
1102 If you say Y here you will get support for the TI
1105 This driver can also be built as a module. If so, the module
1106 will be called rtc-bq4802.
1108 config RTC_DRV_RP5C01
1109 tristate "Ricoh RP5C01"
1110 depends on HAS_IOMEM
1112 If you say yes here you get support for the Ricoh RP5C01
1113 timekeeping chip. It is used in some Amiga models (e.g. A3000
1116 This driver can also be built as a module. If so, the module
1117 will be called rtc-rp5c01.
1119 config RTC_DRV_V3020
1120 tristate "EM Microelectronic V3020"
1122 If you say yes here you will get support for the
1123 EM Microelectronic v3020 RTC chip.
1125 This driver can also be built as a module. If so, the module
1126 will be called rtc-v3020.
1128 config RTC_DRV_WM831X
1129 tristate "Wolfson Microelectronics WM831x RTC"
1130 depends on MFD_WM831X
1132 If you say yes here you will get support for the RTC subsystem
1133 of the Wolfson Microelectronics WM831X series PMICs.
1135 This driver can also be built as a module. If so, the module
1136 will be called "rtc-wm831x".
1138 config RTC_DRV_WM8350
1139 tristate "Wolfson Microelectronics WM8350 RTC"
1140 depends on MFD_WM8350
1142 If you say yes here you will get support for the RTC subsystem
1143 of the Wolfson Microelectronics WM8350.
1145 This driver can also be built as a module. If so, the module
1146 will be called "rtc-wm8350".
1148 config RTC_DRV_SPEAR
1149 tristate "SPEAR ST RTC"
1150 depends on PLAT_SPEAR || COMPILE_TEST
1153 If you say Y here you will get support for the RTC found on
1156 config RTC_DRV_PCF50633
1157 depends on MFD_PCF50633
1158 tristate "NXP PCF50633 RTC"
1160 If you say yes here you get support for the RTC subsystem of the
1161 NXP PCF50633 used in embedded systems.
1163 config RTC_DRV_AB3100
1164 tristate "ST-Ericsson AB3100 RTC"
1165 depends on AB3100_CORE
1166 default y if AB3100_CORE
1168 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1169 support. This chip contains a battery- and capacitor-backed RTC.
1171 config RTC_DRV_AB8500
1172 tristate "ST-Ericsson AB8500 RTC"
1173 depends on AB8500_CORE
1175 select RTC_INTF_DEV_UIE_EMUL
1177 Select this to enable the ST-Ericsson AB8500 power management IC RTC
1178 support. This chip contains a battery- and capacitor-backed RTC.
1180 config RTC_DRV_NUC900
1181 tristate "NUC910/NUC920 RTC driver"
1182 depends on ARCH_W90X900 || COMPILE_TEST
1184 If you say yes here you get support for the RTC subsystem of the
1185 NUC910/NUC920 used in embedded systems.
1188 tristate "IBM OPAL RTC driver"
1189 depends on PPC_POWERNV
1192 If you say yes here you get support for the PowerNV platform RTC
1193 driver based on OPAL interfaces.
1195 This driver can also be built as a module. If so, the module
1196 will be called rtc-opal.
1198 config RTC_DRV_ZYNQMP
1199 tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1202 If you say yes here you get support for the RTC controller found on
1203 Xilinx Zynq Ultrascale+ MPSoC.
1205 comment "on-CPU RTC drivers"
1207 config RTC_DRV_ASM9260
1208 tristate "Alphascale asm9260 RTC"
1209 depends on MACH_ASM9260 || COMPILE_TEST
1211 If you say yes here you get support for the RTC on the
1212 Alphascale asm9260 SoC.
1214 This driver can also be built as a module. If so, the module
1215 will be called rtc-asm9260.
1217 config RTC_DRV_DAVINCI
1218 tristate "TI DaVinci RTC"
1219 depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1221 If you say yes here you get support for the RTC on the
1222 DaVinci platforms (DM365).
1224 This driver can also be built as a module. If so, the module
1225 will be called rtc-davinci.
1227 config RTC_DRV_DIGICOLOR
1228 tristate "Conexant Digicolor RTC"
1229 depends on ARCH_DIGICOLOR || COMPILE_TEST
1231 If you say yes here you get support for the RTC on Conexant
1232 Digicolor platforms. This currently includes the CX92755 SoC.
1234 This driver can also be built as a module. If so, the module
1235 will be called rtc-digicolor.
1237 config RTC_DRV_IMXDI
1238 tristate "Freescale IMX DryIce Real Time Clock"
1241 Support for Freescale IMX DryIce RTC
1243 This driver can also be built as a module, if so, the module
1244 will be called "rtc-imxdi".
1247 tristate "TI OMAP Real Time Clock"
1248 depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1251 select GENERIC_PINCONF
1253 Say "yes" here to support the on chip real time clock
1254 present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1256 This driver can also be built as a module, if so, module
1257 will be called rtc-omap.
1262 This will include RTC support for Samsung SoCs. If
1263 you want to include RTC support for any machine, kindly
1264 select this in the respective mach-XXXX/Kconfig file.
1267 tristate "Samsung S3C series SoC RTC"
1268 depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1270 RTC (Realtime Clock) driver for the clock inbuilt into the
1271 Samsung S3C24XX series of SoCs. This can provide periodic
1272 interrupt rates from 1Hz to 64Hz for user programs, and
1275 The driver currently supports the common features on all the
1276 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1279 This driver can also be build as a module. If so, the module
1280 will be called rtc-s3c.
1282 config RTC_DRV_EP93XX
1283 tristate "Cirrus Logic EP93XX"
1284 depends on ARCH_EP93XX || COMPILE_TEST
1286 If you say yes here you get support for the
1287 RTC embedded in the Cirrus Logic EP93XX processors.
1289 This driver can also be built as a module. If so, the module
1290 will be called rtc-ep93xx.
1292 config RTC_DRV_SA1100
1293 tristate "SA11x0/PXA2xx/PXA910"
1294 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1296 If you say Y here you will get access to the real time clock
1297 built into your SA11x0 or PXA2xx CPU.
1299 To compile this driver as a module, choose M here: the
1300 module will be called rtc-sa1100.
1303 tristate "SuperH On-Chip RTC"
1304 depends on SUPERH && HAVE_CLK
1306 Say Y here to enable support for the on-chip RTC found in
1307 most SuperH processors.
1309 To compile this driver as a module, choose M here: the
1310 module will be called rtc-sh.
1312 config RTC_DRV_VR41XX
1313 tristate "NEC VR41XX"
1314 depends on CPU_VR41XX || COMPILE_TEST
1316 If you say Y here you will get access to the real time clock
1317 built into your NEC VR41XX CPU.
1319 To compile this driver as a module, choose M here: the
1320 module will be called rtc-vr41xx.
1322 config RTC_DRV_PL030
1323 tristate "ARM AMBA PL030 RTC"
1326 If you say Y here you will get access to ARM AMBA
1327 PrimeCell PL030 RTC found on certain ARM SOCs.
1329 To compile this driver as a module, choose M here: the
1330 module will be called rtc-pl030.
1332 config RTC_DRV_PL031
1333 tristate "ARM AMBA PL031 RTC"
1336 If you say Y here you will get access to ARM AMBA
1337 PrimeCell PL031 RTC found on certain ARM SOCs.
1339 To compile this driver as a module, choose M here: the
1340 module will be called rtc-pl031.
1342 config RTC_DRV_AT32AP700X
1343 tristate "AT32AP700X series RTC"
1344 depends on PLATFORM_AT32AP || COMPILE_TEST
1346 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
1347 AT32AP700x family processors.
1349 config RTC_DRV_AT91RM9200
1350 tristate "AT91RM9200 or some AT91SAM9 RTC"
1351 depends on ARCH_AT91 || COMPILE_TEST
1353 Driver for the internal RTC (Realtime Clock) module found on
1354 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
1355 this is powered by the backup power supply.
1357 config RTC_DRV_AT91SAM9
1358 tristate "AT91SAM9 RTT as RTC"
1359 depends on ARCH_AT91 || COMPILE_TEST
1362 Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1363 can be used as an RTC thanks to the backup power supply (e.g. a
1364 small coin cell battery) which keeps this block and the GPBR
1365 (General Purpose Backup Registers) block powered when the device
1367 Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1368 probably want to use the real RTC block instead of the "RTT as an
1371 config RTC_DRV_AU1XXX
1372 tristate "Au1xxx Counter0 RTC support"
1373 depends on MIPS_ALCHEMY
1375 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1376 counter) to be used as a RTC.
1378 This driver can also be built as a module. If so, the module
1379 will be called rtc-au1xxx.
1382 tristate "Blackfin On-Chip RTC"
1383 depends on BLACKFIN && !BF561
1385 If you say yes here you will get support for the
1386 Blackfin On-Chip Real Time Clock.
1388 This driver can also be built as a module. If so, the module
1389 will be called rtc-bfin.
1391 config RTC_DRV_RS5C313
1392 tristate "Ricoh RS5C313"
1393 depends on SH_LANDISK
1395 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1397 config RTC_DRV_GENERIC
1398 tristate "Generic RTC support"
1399 # Please consider writing a new RTC driver instead of using the generic
1401 depends on PARISC || M68K || PPC || SUPERH32 || COMPILE_TEST
1403 Say Y or M here to enable RTC support on systems using the generic
1404 RTC abstraction. If you do not know what you are doing, you should
1408 tristate "PXA27x/PXA3xx"
1410 select RTC_DRV_SA1100
1412 If you say Y here you will get access to the real time clock
1413 built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1414 consisting of an SA1100 compatible RTC and the extended PXA RTC.
1416 This RTC driver uses PXA RTC registers available since pxa27x
1417 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1419 config RTC_DRV_VT8500
1420 tristate "VIA/WonderMedia 85xx SoC RTC"
1421 depends on ARCH_VT8500 || COMPILE_TEST
1423 If you say Y here you will get access to the real time clock
1424 built into your VIA VT8500 SoC or its relatives.
1427 config RTC_DRV_SUN4V
1428 bool "SUN4V Hypervisor RTC"
1431 If you say Y here you will get support for the Hypervisor
1432 based RTC on SUN4V systems.
1434 config RTC_DRV_SUN6I
1435 bool "Allwinner A31 RTC"
1436 default MACH_SUN6I || MACH_SUN8I || COMPILE_TEST
1437 depends on ARCH_SUNXI
1439 If you say Y here you will get support for the RTC found in
1440 some Allwinner SoCs like the A31 or the A64.
1442 config RTC_DRV_SUNXI
1443 tristate "Allwinner sun4i/sun7i RTC"
1444 depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1446 If you say Y here you will get support for the RTC found on
1449 config RTC_DRV_STARFIRE
1453 If you say Y here you will get support for the RTC found on
1456 config RTC_DRV_TX4939
1457 tristate "TX4939 SoC"
1458 depends on SOC_TX4939
1460 Driver for the internal RTC (Realtime Clock) module found on
1464 tristate "Marvell SoC RTC"
1465 depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1467 If you say yes here you will get support for the in-chip RTC
1468 that can be found in some of Marvell's SoC devices, such as
1469 the Kirkwood 88F6281 and 88F6192.
1471 This driver can also be built as a module. If so, the module
1472 will be called rtc-mv.
1474 config RTC_DRV_ARMADA38X
1475 tristate "Armada 38x Marvell SoC RTC"
1476 depends on ARCH_MVEBU || COMPILE_TEST
1478 If you say yes here you will get support for the in-chip RTC
1479 that can be found in the Armada 38x Marvell's SoC device
1481 This driver can also be built as a module. If so, the module
1482 will be called armada38x-rtc.
1484 config RTC_DRV_GEMINI
1485 tristate "Gemini SoC RTC"
1486 depends on ARCH_GEMINI || COMPILE_TEST
1487 depends on HAS_IOMEM
1489 If you say Y here you will get support for the
1490 RTC found on Gemini SoC's.
1492 This driver can also be built as a module. If so, the module
1493 will be called rtc-gemini.
1499 If you say yes here you will get support for the RTC on PS3.
1501 This driver can also be built as a module. If so, the module
1502 will be called rtc-ps3.
1504 config RTC_DRV_COH901331
1505 tristate "ST-Ericsson COH 901 331 RTC"
1506 depends on ARCH_U300 || COMPILE_TEST
1508 If you say Y here you will get access to ST-Ericsson
1509 COH 901 331 RTC clock found in some ST-Ericsson Mobile
1512 This driver can also be built as a module. If so, the module
1513 will be called "rtc-coh901331".
1517 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1518 depends on ARCH_MXS || COMPILE_TEST
1521 If you say yes here you will get support for the onboard
1522 STMP3xxx/i.MX23/i.MX28 RTC.
1524 This driver can also be built as a module. If so, the module
1525 will be called rtc-stmp3xxx.
1531 If you say Y here you will get support for the RTC found on
1532 the PCAP2 ASIC used on some Motorola phones.
1534 config RTC_DRV_MC13XXX
1535 depends on MFD_MC13XXX
1536 tristate "Freescale MC13xxx RTC"
1538 This enables support for the RTCs found on Freescale's PMICs
1539 MC13783 and MC13892.
1541 config RTC_DRV_MPC5121
1542 tristate "Freescale MPC5121 built-in RTC"
1543 depends on PPC_MPC512x || PPC_MPC52xx
1545 If you say yes here you will get support for the
1546 built-in RTC on MPC5121 or on MPC5200.
1548 This driver can also be built as a module. If so, the module
1549 will be called rtc-mpc5121.
1551 config RTC_DRV_JZ4740
1552 tristate "Ingenic JZ4740 SoC"
1553 depends on MACH_JZ4740 || COMPILE_TEST
1555 If you say yes here you get support for the Ingenic JZ4740 SoC RTC
1558 This driver can also be buillt as a module. If so, the module
1559 will be called rtc-jz4740.
1561 config RTC_DRV_LPC24XX
1562 tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1563 depends on ARCH_LPC18XX || COMPILE_TEST
1564 depends on OF && HAS_IOMEM
1566 This enables support for the NXP RTC found which can be found on
1567 NXP LPC178x/18xx/408x/43xx devices.
1569 If you have one of the devices above enable this driver to use
1570 the hardware RTC. This driver can also be buillt as a module. If
1571 so, the module will be called rtc-lpc24xx.
1573 config RTC_DRV_LPC32XX
1574 depends on ARCH_LPC32XX || COMPILE_TEST
1575 tristate "NXP LPC32XX RTC"
1577 This enables support for the NXP RTC in the LPC32XX
1579 This driver can also be buillt as a module. If so, the module
1580 will be called rtc-lpc32xx.
1582 config RTC_DRV_PM8XXX
1583 tristate "Qualcomm PMIC8XXX RTC"
1584 depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1586 If you say yes here you get support for the
1587 Qualcomm PMIC8XXX RTC.
1589 To compile this driver as a module, choose M here: the
1590 module will be called rtc-pm8xxx.
1592 config RTC_DRV_TEGRA
1593 tristate "NVIDIA Tegra Internal RTC driver"
1594 depends on ARCH_TEGRA || COMPILE_TEST
1596 If you say yes here you get support for the
1597 Tegra 200 series internal RTC module.
1599 This drive can also be built as a module. If so, the module
1600 will be called rtc-tegra.
1603 tristate "Tilera hypervisor RTC support"
1606 Enable support for the Linux driver side of the Tilera
1607 hypervisor's real-time clock interface.
1610 tristate "PKUnity v3 RTC support"
1611 depends on ARCH_PUV3
1613 This enables support for the RTC in the PKUnity-v3 SoCs.
1615 This drive can also be built as a module. If so, the module
1616 will be called rtc-puv3.
1618 config RTC_DRV_LOONGSON1
1619 tristate "loongson1 RTC support"
1620 depends on MACH_LOONGSON32
1622 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1623 counter) to be used as a RTC.
1625 This driver can also be built as a module. If so, the module
1626 will be called rtc-ls1x.
1629 tristate "Freescale MXC Real Time Clock"
1632 If you say yes here you get support for the Freescale MXC
1635 This driver can also be built as a module, if so, the module
1636 will be called "rtc-mxc".
1639 tristate "Freescale SNVS RTC support"
1641 depends on HAS_IOMEM
1644 If you say yes here you get support for the Freescale SNVS
1645 Low Power (LP) RTC module.
1647 This driver can also be built as a module, if so, the module
1648 will be called "rtc-snvs".
1650 config RTC_DRV_SIRFSOC
1651 tristate "SiRFSOC RTC"
1652 depends on ARCH_SIRF
1654 Say "yes" here to support the real time clock on SiRF SOC chips.
1655 This driver can also be built as a module called rtc-sirfsoc.
1657 config RTC_DRV_ST_LPC
1658 tristate "STMicroelectronics LPC RTC"
1662 Say Y here to include STMicroelectronics Low Power Controller
1663 (LPC) based RTC support.
1665 To compile this driver as a module, choose M here: the
1666 module will be called rtc-st-lpc.
1668 config RTC_DRV_MOXART
1669 tristate "MOXA ART RTC"
1670 depends on ARCH_MOXART || COMPILE_TEST
1672 If you say yes here you get support for the MOXA ART
1675 This driver can also be built as a module. If so, the module
1676 will be called rtc-moxart
1678 config RTC_DRV_MT6397
1679 tristate "Mediatek Real Time Clock driver"
1680 depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1682 This selects the Mediatek(R) RTC driver. RTC is part of Mediatek
1683 MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1684 Mediatek(R) RTC driver.
1686 If you want to use Mediatek(R) RTC interface, select Y or M here.
1688 config RTC_DRV_XGENE
1689 tristate "APM X-Gene RTC"
1690 depends on HAS_IOMEM
1691 depends on ARCH_XGENE || COMPILE_TEST
1693 If you say yes here you get support for the APM X-Gene SoC real time
1696 This driver can also be built as a module, if so, the module
1697 will be called "rtc-xgene".
1699 config RTC_DRV_PIC32
1700 tristate "Microchip PIC32 RTC"
1701 depends on MACH_PIC32
1704 If you say yes here you get support for the PIC32 RTC module.
1706 This driver can also be built as a module. If so, the module
1707 will be called rtc-pic32
1709 comment "HID Sensor RTC drivers"
1711 config RTC_DRV_HID_SENSOR_TIME
1712 tristate "HID Sensor Time"
1715 select HID_SENSOR_HUB
1716 select HID_SENSOR_IIO_COMMON
1718 Say yes here to build support for the HID Sensors of type Time.
1719 This drivers makes such sensors available as RTCs.
1721 If this driver is compiled as a module, it will be named
1722 rtc-hid-sensor-time.