xref: /openbmc/linux/drivers/rtc/Kconfig (revision 1fa0a7dc)
1#
2# RTC class/drivers configuration
3#
4
5config RTC_LIB
6	bool
7
8config RTC_MC146818_LIB
9	bool
10	select RTC_LIB
11
12menuconfig RTC_CLASS
13	bool "Real Time Clock"
14	default n
15	depends on !S390 && !UML
16	select RTC_LIB
17	help
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.
21
22if RTC_CLASS
23
24config RTC_HCTOSYS
25	bool "Set system time from RTC on startup and resume"
26	default y
27	help
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.
31
32config RTC_HCTOSYS_DEVICE
33	string "RTC used to set the system time"
34	depends on RTC_HCTOSYS
35	default "rtc0"
36	help
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
41	  timezone correction.
42
43	  The driver for this RTC device must be loaded before late_initcall
44	  functions run, so it must usually be statically linked.
45
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).
49
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.
54
55config RTC_SYSTOHC
56	bool "Set the RTC time based on NTP synchronization"
57	default y
58	help
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.
62
63config RTC_SYSTOHC_DEVICE
64	string "RTC used to synchronize NTP adjustment"
65	depends on RTC_SYSTOHC
66	default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
67	default "rtc0"
68	help
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
72	  context.
73
74config RTC_DEBUG
75	bool "RTC debug support"
76	help
77	  Say yes here to enable debugging support in the RTC framework
78	  and individual RTC drivers.
79
80config RTC_NVMEM
81	bool "RTC non volatile storage support"
82	select NVMEM
83	default RTC_CLASS
84	help
85	  Say yes here to add support for the non volatile (often battery
86	  backed) storage present on RTCs.
87
88comment "RTC interfaces"
89
90config RTC_INTF_SYSFS
91	bool "/sys/class/rtc/rtcN (sysfs)"
92	depends on SYSFS
93	default RTC_CLASS
94	help
95	  Say yes here if you want to use your RTCs using sysfs interfaces,
96	  /sys/class/rtc/rtc0 through /sys/.../rtcN.
97
98	  If unsure, say Y.
99
100config RTC_INTF_PROC
101	bool "/proc/driver/rtc (procfs for rtcN)"
102	depends on PROC_FS
103	default RTC_CLASS
104	help
105	  Say yes here if you want to use your system clock RTC through
106	  the proc interface, /proc/driver/rtc.
107	  Other RTCs will not be available through that API.
108	  If there is no RTC for the system clock, then the first RTC(rtc0)
109	  is used by default.
110
111	  If unsure, say Y.
112
113config RTC_INTF_DEV
114	bool "/dev/rtcN (character devices)"
115	default RTC_CLASS
116	help
117	  Say yes here if you want to use your RTCs using the /dev
118	  interfaces, which "udev" sets up as /dev/rtc0 through
119	  /dev/rtcN.
120
121	  You may want to set up a symbolic link so one of these
122	  can be accessed as /dev/rtc, which is a name
123	  expected by "hwclock" and some other programs. Recent
124	  versions of "udev" are known to set up the symlink for you.
125
126	  If unsure, say Y.
127
128config RTC_INTF_DEV_UIE_EMUL
129	bool "RTC UIE emulation on dev interface"
130	depends on RTC_INTF_DEV
131	help
132	  Provides an emulation for RTC_UIE if the underlying rtc chip
133	  driver does not expose RTC_UIE ioctls. Those requests generate
134	  once-per-second update interrupts, used for synchronization.
135
136	  The emulation code will read the time from the hardware
137	  clock several times per second, please enable this option
138	  only if you know that you really need it.
139
140config RTC_DRV_TEST
141	tristate "Test driver/device"
142	help
143	  If you say yes here you get support for the
144	  RTC test driver. It's a software RTC which can be
145	  used to test the RTC subsystem APIs. It gets
146	  the time from the system clock.
147	  You want this driver only if you are doing development
148	  on the RTC subsystem. Please read the source code
149	  for further details.
150
151	  This driver can also be built as a module. If so, the module
152	  will be called rtc-test.
153
154comment "I2C RTC drivers"
155
156if I2C
157
158config RTC_DRV_88PM860X
159	tristate "Marvell 88PM860x"
160	depends on MFD_88PM860X
161	help
162	  If you say yes here you get support for RTC function in Marvell
163	  88PM860x chips.
164
165	  This driver can also be built as a module. If so, the module
166	  will be called rtc-88pm860x.
167
168config RTC_DRV_88PM80X
169	tristate "Marvell 88PM80x"
170	depends on MFD_88PM800
171	help
172	  If you say yes here you get support for RTC function in Marvell
173	  88PM80x chips.
174
175	  This driver can also be built as a module. If so, the module
176	  will be called rtc-88pm80x.
177
178config RTC_DRV_ABB5ZES3
179	select REGMAP_I2C
180	tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
181	help
182	  If you say yes here you get support for the Abracon
183	  AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
184
185	  This driver can also be built as a module. If so, the module
186	  will be called rtc-ab-b5ze-s3.
187
188config RTC_DRV_ABEOZ9
189	select REGMAP_I2C
190	tristate "Abracon AB-RTCMC-32.768kHz-EOZ9"
191	help
192	  If you say yes here you get support for the Abracon
193	  AB-RTCMC-32.768kHz-EOA9 I2C RTC chip.
194
195	  This driver can also be built as a module. If so, the module
196	  will be called rtc-ab-e0z9.
197
198config RTC_DRV_ABX80X
199	tristate "Abracon ABx80x"
200	select WATCHDOG_CORE if WATCHDOG
201	help
202	  If you say yes here you get support for Abracon AB080X and AB180X
203	  families of ultra-low-power  battery- and capacitor-backed real-time
204	  clock chips.
205
206	  This driver can also be built as a module. If so, the module
207	  will be called rtc-abx80x.
208
209config RTC_DRV_AC100
210	tristate "X-Powers AC100"
211	depends on MFD_AC100
212	help
213	  If you say yes here you get support for the real-time clock found
214	  in X-Powers AC100 family peripheral ICs.
215
216	  This driver can also be built as a module. If so, the module
217	  will be called rtc-ac100.
218
219config RTC_DRV_BRCMSTB
220	tristate "Broadcom STB wake-timer"
221	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
222	default ARCH_BRCMSTB || BMIPS_GENERIC
223	help
224	  If you say yes here you get support for the wake-timer found on
225	  Broadcom STB SoCs (BCM7xxx).
226
227	  This driver can also be built as a module. If so, the module will
228	  be called rtc-brcmstb-waketimer.
229
230config RTC_DRV_AS3722
231	tristate "ams AS3722 RTC driver"
232	depends on MFD_AS3722
233	help
234	  If you say yes here you get support for the RTC of ams AS3722 PMIC
235	  chips.
236
237	  This driver can also be built as a module. If so, the module
238	  will be called rtc-as3722.
239
240config RTC_DRV_DS1307
241	tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
242	help
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).
249
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.
254
255	  This driver can also be built as a module. If so, the module
256	  will be called rtc-ds1307.
257
258config RTC_DRV_DS1307_CENTURY
259	bool "Century bit support for rtc-ds1307"
260	depends on RTC_DRV_DS1307
261	default n
262	help
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.
271
272config RTC_DRV_DS1374
273	tristate "Dallas/Maxim DS1374"
274	help
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.
278
279	  This driver can also be built as a module. If so, the module
280	  will be called rtc-ds1374.
281
282config RTC_DRV_DS1374_WDT
283	bool "Dallas/Maxim DS1374 watchdog timer"
284	depends on RTC_DRV_DS1374
285	help
286	  If you say Y here you will get support for the
287	  watchdog timer in the Dallas Semiconductor DS1374
288	  real-time clock chips.
289
290config RTC_DRV_DS1672
291	tristate "Dallas/Maxim DS1672"
292	help
293	  If you say yes here you get support for the
294	  Dallas/Maxim DS1672 timekeeping chip.
295
296	  This driver can also be built as a module. If so, the module
297	  will be called rtc-ds1672.
298
299config RTC_DRV_HYM8563
300	tristate "Haoyu Microelectronics HYM8563"
301	depends on OF
302	help
303	  Say Y to enable support for the HYM8563 I2C RTC chip. Apart
304	  from the usual rtc functions it provides a clock output of
305	  up to 32kHz.
306
307	  This driver can also be built as a module. If so, the module
308	  will be called rtc-hym8563.
309
310config RTC_DRV_LP8788
311	tristate "TI LP8788 RTC driver"
312	depends on MFD_LP8788
313	help
314	  Say Y to enable support for the LP8788 RTC/ALARM driver.
315
316config RTC_DRV_MAX6900
317	tristate "Maxim MAX6900"
318	help
319	  If you say yes here you will get support for the
320	  Maxim MAX6900 I2C RTC chip.
321
322	  This driver can also be built as a module. If so, the module
323	  will be called rtc-max6900.
324
325config RTC_DRV_MAX8907
326	tristate "Maxim MAX8907"
327	depends on MFD_MAX8907 || COMPILE_TEST
328	help
329	  If you say yes here you will get support for the
330	  RTC of Maxim MAX8907 PMIC.
331
332	  This driver can also be built as a module. If so, the module
333	  will be called rtc-max8907.
334
335config RTC_DRV_MAX8925
336	tristate "Maxim MAX8925"
337	depends on MFD_MAX8925
338	help
339	  If you say yes here you will get support for the
340	  RTC of Maxim MAX8925 PMIC.
341
342	  This driver can also be built as a module. If so, the module
343	  will be called rtc-max8925.
344
345config RTC_DRV_MAX8998
346	tristate "Maxim MAX8998"
347	depends on MFD_MAX8998
348	help
349	  If you say yes here you will get support for the
350	  RTC of Maxim MAX8998 PMIC.
351
352	  This driver can also be built as a module. If so, the module
353	  will be called rtc-max8998.
354
355config RTC_DRV_MAX8997
356	tristate "Maxim MAX8997"
357	depends on MFD_MAX8997
358	help
359	  If you say yes here you will get support for the
360	  RTC of Maxim MAX8997 PMIC.
361
362	  This driver can also be built as a module. If so, the module
363	  will be called rtc-max8997.
364
365config RTC_DRV_MAX77686
366	tristate "Maxim MAX77686"
367	depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
368	help
369	  If you say yes here you will get support for the
370	  RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
371
372	  This driver can also be built as a module. If so, the module
373	  will be called rtc-max77686.
374
375config RTC_DRV_RK808
376	tristate "Rockchip RK805/RK808/RK818 RTC"
377	depends on MFD_RK808
378	help
379	  If you say yes here you will get support for the
380	  RTC of RK805, RK808 and RK818 PMIC.
381
382	  This driver can also be built as a module. If so, the module
383	  will be called rk808-rtc.
384
385config RTC_DRV_RS5C372
386	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
387	help
388	  If you say yes here you get support for the
389	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
390
391	  This driver can also be built as a module. If so, the module
392	  will be called rtc-rs5c372.
393
394config RTC_DRV_ISL1208
395	tristate "Intersil ISL1208"
396	help
397	  If you say yes here you get support for the
398	  Intersil ISL1208 RTC chip.
399
400	  This driver can also be built as a module. If so, the module
401	  will be called rtc-isl1208.
402
403config RTC_DRV_ISL12022
404	tristate "Intersil ISL12022"
405	help
406	  If you say yes here you get support for the
407	  Intersil ISL12022 RTC chip.
408
409	  This driver can also be built as a module. If so, the module
410	  will be called rtc-isl12022.
411
412config RTC_DRV_ISL12026
413	tristate "Intersil ISL12026"
414	depends on OF || COMPILE_TEST
415	help
416	  If you say yes here you get support for the
417	  Intersil ISL12026 RTC chip.
418
419	  This driver can also be built as a module. If so, the module
420	  will be called rtc-isl12026.
421
422config RTC_DRV_X1205
423	tristate "Xicor/Intersil X1205"
424	help
425	  If you say yes here you get support for the
426	  Xicor/Intersil X1205 RTC chip.
427
428	  This driver can also be built as a module. If so, the module
429	  will be called rtc-x1205.
430
431config RTC_DRV_PCF8523
432	tristate "NXP PCF8523"
433	help
434	  If you say yes here you get support for the NXP PCF8523 RTC
435	  chips.
436
437	  This driver can also be built as a module. If so, the module
438	  will be called rtc-pcf8523.
439
440config RTC_DRV_PCF85063
441	tristate "NXP PCF85063"
442	select REGMAP_I2C
443	help
444	  If you say yes here you get support for the PCF85063 RTC chip
445
446	  This driver can also be built as a module. If so, the module
447	  will be called rtc-pcf85063.
448
449config RTC_DRV_PCF85363
450	tristate "NXP PCF85363"
451	select REGMAP_I2C
452	help
453	  If you say yes here you get support for the PCF85363 RTC chip.
454
455	  This driver can also be built as a module. If so, the module
456	  will be called rtc-pcf85363.
457
458	  The nvmem interface will be named pcf85363-#, where # is the
459	  zero-based instance number.
460
461config RTC_DRV_PCF8563
462	tristate "Philips PCF8563/Epson RTC8564"
463	help
464	  If you say yes here you get support for the
465	  Philips PCF8563 RTC chip. The Epson RTC8564
466	  should work as well.
467
468	  This driver can also be built as a module. If so, the module
469	  will be called rtc-pcf8563.
470
471config RTC_DRV_PCF8583
472	tristate "Philips PCF8583"
473	help
474	  If you say yes here you get support for the Philips PCF8583
475	  RTC chip found on Acorn RiscPCs. This driver supports the
476	  platform specific method of retrieving the current year from
477	  the RTC's SRAM. It will work on other platforms with the same
478	  chip, but the year will probably have to be tweaked.
479
480	  This driver can also be built as a module. If so, the module
481	  will be called rtc-pcf8583.
482
483config RTC_DRV_M41T80
484	tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
485	help
486	  If you say Y here you will get support for the ST M41T60
487	  and M41T80 RTC chips series. Currently, the following chips are
488	  supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
489	  M41ST85, M41ST87, and MicroCrystal RV4162.
490
491	  This driver can also be built as a module. If so, the module
492	  will be called rtc-m41t80.
493
494config RTC_DRV_M41T80_WDT
495	bool "ST M41T65/M41T80 series RTC watchdog timer"
496	depends on RTC_DRV_M41T80
497	help
498	  If you say Y here you will get support for the
499	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
500
501config RTC_DRV_BQ32K
502	tristate "TI BQ32000"
503	help
504	  If you say Y here you will get support for the TI
505	  BQ32000 I2C RTC chip.
506
507	  This driver can also be built as a module. If so, the module
508	  will be called rtc-bq32k.
509
510config RTC_DRV_DM355EVM
511	tristate "TI DaVinci DM355 EVM RTC"
512	depends on MFD_DM355EVM_MSP
513	help
514	  Supports the RTC firmware in the MSP430 on the DM355 EVM.
515
516config RTC_DRV_TWL92330
517	bool "TI TWL92330/Menelaus"
518	depends on MENELAUS
519	help
520	  If you say yes here you get support for the RTC on the
521	  TWL92330 "Menelaus" power management chip, used with OMAP2
522	  platforms. The support is integrated with the rest of
523	  the Menelaus driver; it's not separate module.
524
525config RTC_DRV_TWL4030
526	tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
527	depends on TWL4030_CORE
528	depends on OF
529	help
530	  If you say yes here you get support for the RTC on the
531	  TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
532
533	  This driver can also be built as a module. If so, the module
534	  will be called rtc-twl.
535
536config RTC_DRV_PALMAS
537	tristate "TI Palmas RTC driver"
538	depends on MFD_PALMAS
539	help
540	  If you say yes here you get support for the RTC of TI PALMA series PMIC
541	  chips.
542
543	  This driver can also be built as a module. If so, the module
544	  will be called rtc-palma.
545
546config RTC_DRV_TPS6586X
547	tristate "TI TPS6586X RTC driver"
548	depends on MFD_TPS6586X
549	help
550	  TI Power Management IC TPS6586X supports RTC functionality
551	  along with alarm. This driver supports the RTC driver for
552	  the TPS6586X RTC module.
553
554config RTC_DRV_TPS65910
555	tristate "TI TPS65910 RTC driver"
556	depends on RTC_CLASS && MFD_TPS65910
557	help
558	  If you say yes here you get support for the RTC on the
559	  TPS65910 chips.
560
561	  This driver can also be built as a module. If so, the module
562	  will be called rtc-tps65910.
563
564config RTC_DRV_TPS80031
565	tristate "TI TPS80031/TPS80032 RTC driver"
566	depends on MFD_TPS80031
567	help
568	  TI Power Management IC TPS80031 supports RTC functionality
569	  along with alarm. This driver supports the RTC driver for
570	  the TPS80031 RTC module.
571
572config RTC_DRV_RC5T583
573	tristate "RICOH 5T583 RTC driver"
574	depends on MFD_RC5T583
575	help
576	  If you say yes here you get support for the RTC on the
577	  RICOH 5T583 chips.
578
579	  This driver can also be built as a module. If so, the module
580	  will be called rtc-rc5t583.
581
582config RTC_DRV_S35390A
583	tristate "Seiko Instruments S-35390A"
584	select BITREVERSE
585	help
586	  If you say yes here you will get support for the Seiko
587	  Instruments S-35390A.
588
589	  This driver can also be built as a module. If so the module
590	  will be called rtc-s35390a.
591
592config RTC_DRV_FM3130
593	tristate "Ramtron FM3130"
594	help
595	  If you say Y here you will get support for the
596	  Ramtron FM3130 RTC chips.
597	  Ramtron FM3130 is a chip with two separate devices inside,
598	  RTC clock and FRAM. This driver provides only RTC functionality.
599
600	  This driver can also be built as a module. If so the module
601	  will be called rtc-fm3130.
602
603config RTC_DRV_RX8010
604	tristate "Epson RX8010SJ"
605	help
606	  If you say yes here you get support for the Epson RX8010SJ RTC
607	  chip.
608
609	  This driver can also be built as a module. If so, the module
610	  will be called rtc-rx8010.
611
612config RTC_DRV_RX8581
613	tristate "Epson RX-8571/RX-8581"
614	help
615	  If you say yes here you will get support for the Epson RX-8571/
616	  RX-8581.
617
618	  This driver can also be built as a module. If so the module
619	  will be called rtc-rx8581.
620
621config RTC_DRV_RX8025
622	tristate "Epson RX-8025SA/NB"
623	help
624	  If you say yes here you get support for the Epson
625	  RX-8025SA/NB RTC chips.
626
627	  This driver can also be built as a module. If so, the module
628	  will be called rtc-rx8025.
629
630config RTC_DRV_EM3027
631	tristate "EM Microelectronic EM3027"
632	help
633	  If you say yes here you get support for the EM
634	  Microelectronic EM3027 RTC chips.
635
636	  This driver can also be built as a module. If so, the module
637	  will be called rtc-em3027.
638
639config RTC_DRV_RV3028
640	tristate "Micro Crystal RV3028"
641	help
642	  If you say yes here you get support for the Micro Crystal
643	  RV3028.
644
645	  This driver can also be built as a module. If so, the module
646	  will be called rtc-rv3028.
647
648config RTC_DRV_RV8803
649	tristate "Micro Crystal RV8803, Epson RX8900"
650	help
651	  If you say yes here you get support for the Micro Crystal RV8803 and
652	  Epson RX8900 RTC chips.
653
654	  This driver can also be built as a module. If so, the module
655	  will be called rtc-rv8803.
656
657config RTC_DRV_S5M
658	tristate "Samsung S2M/S5M series"
659	depends on MFD_SEC_CORE || COMPILE_TEST
660	select REGMAP_IRQ
661	help
662	  If you say yes here you will get support for the
663	  RTC of Samsung S2MPS14 and S5M PMIC series.
664
665	  This driver can also be built as a module. If so, the module
666	  will be called rtc-s5m.
667
668config RTC_DRV_SD3078
669    tristate "ZXW Shenzhen whwave SD3078"
670    help
671      If you say yes here you get support for the ZXW Shenzhen whwave
672      SD3078 RTC chips.
673
674      This driver can also be built as a module. If so, the module
675      will be called rtc-sd3078
676
677endif # I2C
678
679comment "SPI RTC drivers"
680
681if SPI_MASTER
682
683config RTC_DRV_M41T93
684	tristate "ST M41T93"
685	help
686	  If you say yes here you will get support for the
687	  ST M41T93 SPI RTC chip.
688
689	  This driver can also be built as a module. If so, the module
690	  will be called rtc-m41t93.
691
692config RTC_DRV_M41T94
693	tristate "ST M41T94"
694	help
695	  If you say yes here you will get support for the
696	  ST M41T94 SPI RTC chip.
697
698	  This driver can also be built as a module. If so, the module
699	  will be called rtc-m41t94.
700
701config RTC_DRV_DS1302
702	tristate "Dallas/Maxim DS1302"
703	depends on SPI
704	help
705	  If you say yes here you get support for the Dallas DS1302 RTC chips.
706
707	  This driver can also be built as a module. If so, the module
708	  will be called rtc-ds1302.
709
710config RTC_DRV_DS1305
711	tristate "Dallas/Maxim DS1305/DS1306"
712	help
713	  Select this driver to get support for the Dallas/Maxim DS1305
714	  and DS1306 real time clock chips. These support a trickle
715	  charger, alarms, and NVRAM in addition to the clock.
716
717	  This driver can also be built as a module. If so, the module
718	  will be called rtc-ds1305.
719
720config RTC_DRV_DS1343
721	select REGMAP_SPI
722	tristate "Dallas/Maxim DS1343/DS1344"
723	help
724	  If you say yes here you get support for the
725	  Dallas/Maxim DS1343 and DS1344 real time clock chips.
726	  Support for trickle charger, alarm is provided.
727
728	  This driver can also be built as a module. If so, the module
729	  will be called rtc-ds1343.
730
731config RTC_DRV_DS1347
732	select REGMAP_SPI
733	tristate "Dallas/Maxim DS1347"
734	help
735	  If you say yes here you get support for the
736	  Dallas/Maxim DS1347 chips.
737
738	  This driver only supports the RTC feature, and not other chip
739	  features such as alarms.
740
741	  This driver can also be built as a module. If so, the module
742	  will be called rtc-ds1347.
743
744config RTC_DRV_DS1390
745	tristate "Dallas/Maxim DS1390/93/94"
746	help
747	  If you say yes here you get support for the
748	  Dallas/Maxim DS1390/93/94 chips.
749
750	  This driver supports the RTC feature and trickle charging but not
751	  other chip features such as alarms.
752
753	  This driver can also be built as a module. If so, the module
754	  will be called rtc-ds1390.
755
756config RTC_DRV_MAX6916
757	tristate "Maxim MAX6916"
758	help
759	  If you say yes here you will get support for the
760	  Maxim MAX6916 SPI RTC chip.
761
762	  This driver only supports the RTC feature, and not other chip
763	  features such as alarms.
764
765	  This driver can also be built as a module. If so, the module
766	  will be called rtc-max6916.
767
768config RTC_DRV_R9701
769	tristate "Epson RTC-9701JE"
770	help
771	  If you say yes here you will get support for the
772	  Epson RTC-9701JE SPI RTC chip.
773
774	  This driver can also be built as a module. If so, the module
775	  will be called rtc-r9701.
776
777config RTC_DRV_RX4581
778	tristate "Epson RX-4581"
779	help
780	  If you say yes here you will get support for the Epson RX-4581.
781
782	  This driver can also be built as a module. If so the module
783	  will be called rtc-rx4581.
784
785config RTC_DRV_RX6110
786	tristate "Epson RX-6110"
787	select REGMAP_SPI
788	help
789	  If you say yes here you will get support for the Epson RX-6610.
790
791	  This driver can also be built as a module. If so the module
792	  will be called rtc-rx6110.
793
794config RTC_DRV_RS5C348
795	tristate "Ricoh RS5C348A/B"
796	help
797	  If you say yes here you get support for the
798	  Ricoh RS5C348A and RS5C348B RTC chips.
799
800	  This driver can also be built as a module. If so, the module
801	  will be called rtc-rs5c348.
802
803config RTC_DRV_MAX6902
804	tristate "Maxim MAX6902"
805	help
806	  If you say yes here you will get support for the
807	  Maxim MAX6902 SPI RTC chip.
808
809	  This driver can also be built as a module. If so, the module
810	  will be called rtc-max6902.
811
812config RTC_DRV_PCF2123
813	tristate "NXP PCF2123"
814	help
815	  If you say yes here you get support for the NXP PCF2123
816	  RTC chip.
817
818	  This driver can also be built as a module. If so, the module
819	  will be called rtc-pcf2123.
820
821config RTC_DRV_MCP795
822	tristate "Microchip MCP795"
823	help
824	  If you say yes here you will get support for the Microchip MCP795.
825
826	  This driver can also be built as a module. If so the module
827	  will be called rtc-mcp795.
828
829endif # SPI_MASTER
830
831#
832# Helper to resolve issues with configs that have SPI enabled but I2C
833# modular.  See SND_SOC_I2C_AND_SPI for more information
834#
835config RTC_I2C_AND_SPI
836	tristate
837	default m if I2C=m
838	default y if I2C=y
839	default y if SPI_MASTER=y
840	select REGMAP_I2C if I2C
841	select REGMAP_SPI if SPI_MASTER
842
843comment "SPI and I2C RTC drivers"
844
845config RTC_DRV_DS3232
846	tristate "Dallas/Maxim DS3232/DS3234"
847	depends on RTC_I2C_AND_SPI
848	help
849	  If you say yes here you get support for Dallas Semiconductor
850	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
851	  with the device, the alarm functionality is supported.
852
853	  This driver can also be built as a module.  If so, the module
854	  will be called rtc-ds3232.
855
856config RTC_DRV_DS3232_HWMON
857	bool "HWMON support for Dallas/Maxim DS3232/DS3234"
858	depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
859	default y
860	help
861	  Say Y here if you want to expose temperature sensor data on
862	  rtc-ds3232
863
864config RTC_DRV_PCF2127
865	tristate "NXP PCF2127"
866	depends on RTC_I2C_AND_SPI
867	help
868	  If you say yes here you get support for the NXP PCF2127/29 RTC
869	  chips.
870
871	  This driver can also be built as a module. If so, the module
872	  will be called rtc-pcf2127.
873
874config RTC_DRV_RV3029C2
875	tristate "Micro Crystal RV3029/3049"
876	depends on RTC_I2C_AND_SPI
877	help
878	  If you say yes here you get support for the Micro Crystal
879	  RV3029 and RV3049 RTC chips.
880
881	  This driver can also be built as a module. If so, the module
882	  will be called rtc-rv3029c2.
883
884config RTC_DRV_RV3029_HWMON
885	bool "HWMON support for RV3029/3049"
886	depends on RTC_DRV_RV3029C2 && HWMON
887	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
888	default y
889	help
890	  Say Y here if you want to expose temperature sensor data on
891	  rtc-rv3029.
892
893comment "Platform RTC drivers"
894
895# this 'CMOS' RTC driver is arch dependent because it requires
896# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
897# global rtc_lock ... it's not yet just another platform_device.
898
899config RTC_DRV_CMOS
900	tristate "PC-style 'CMOS'"
901	depends on X86 || ARM || PPC || MIPS || SPARC64
902	default y if X86
903	select RTC_MC146818_LIB
904	help
905	  Say "yes" here to get direct support for the real time clock
906	  found in every PC or ACPI-based system, and some other boards.
907	  Specifically the original MC146818, compatibles like those in
908	  PC south bridges, the DS12887 or M48T86, some multifunction
909	  or LPC bus chips, and so on.
910
911	  Your system will need to define the platform device used by
912	  this driver, otherwise it won't be accessible. This means
913	  you can safely enable this driver if you don't know whether
914	  or not your board has this kind of hardware.
915
916	  This driver can also be built as a module. If so, the module
917	  will be called rtc-cmos.
918
919config RTC_DRV_ALPHA
920	bool "Alpha PC-style CMOS"
921	depends on ALPHA
922	select RTC_MC146818_LIB
923	default y
924	help
925	  Direct support for the real-time clock found on every Alpha
926	  system, specifically MC146818 compatibles.  If in doubt, say Y.
927
928config RTC_DRV_VRTC
929	tristate "Virtual RTC for Intel MID platforms"
930	depends on X86_INTEL_MID
931	default y if X86_INTEL_MID
932
933	help
934	Say "yes" here to get direct support for the real time clock
935	found on Moorestown platforms. The VRTC is a emulated RTC that
936	derives its clock source from a real RTC in the PMIC. The MC146818
937	style programming interface is mostly conserved, but any
938	updates are done via IPC calls to the system controller FW.
939
940config RTC_DRV_DS1216
941	tristate "Dallas DS1216"
942	depends on SNI_RM
943	help
944	  If you say yes here you get support for the Dallas DS1216 RTC chips.
945
946config RTC_DRV_DS1286
947	tristate "Dallas DS1286"
948	depends on HAS_IOMEM
949	help
950	  If you say yes here you get support for the Dallas DS1286 RTC chips.
951
952config RTC_DRV_DS1511
953	tristate "Dallas DS1511"
954	depends on HAS_IOMEM
955	help
956	  If you say yes here you get support for the
957	  Dallas DS1511 timekeeping/watchdog chip.
958
959	  This driver can also be built as a module. If so, the module
960	  will be called rtc-ds1511.
961
962config RTC_DRV_DS1553
963	tristate "Maxim/Dallas DS1553"
964	depends on HAS_IOMEM
965	help
966	  If you say yes here you get support for the
967	  Maxim/Dallas DS1553 timekeeping chip.
968
969	  This driver can also be built as a module. If so, the module
970	  will be called rtc-ds1553.
971
972config RTC_DRV_DS1685_FAMILY
973	tristate "Dallas/Maxim DS1685 Family"
974	help
975	  If you say yes here you get support for the Dallas/Maxim DS1685
976	  family of real time chips.  This family includes the DS1685/DS1687,
977	  DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
978	  DS17885/DS17887 chips.
979
980	  This driver can also be built as a module. If so, the module
981	  will be called rtc-ds1685.
982
983choice
984	prompt "Subtype"
985	depends on RTC_DRV_DS1685_FAMILY
986	default RTC_DRV_DS1685
987
988config RTC_DRV_DS1685
989	bool "DS1685/DS1687"
990	help
991	  This enables support for the Dallas/Maxim DS1685/DS1687 real time
992	  clock chip.
993
994	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
995	  systems, as well as EPPC-405-UC modules by electronic system design
996	  GmbH.
997
998config RTC_DRV_DS1689
999	bool "DS1689/DS1693"
1000	help
1001	  This enables support for the Dallas/Maxim DS1689/DS1693 real time
1002	  clock chip.
1003
1004	  This is an older RTC chip, supplanted by the DS1685/DS1687 above,
1005	  which supports a few minor features such as Vcc, Vbat, and Power
1006	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
1007
1008	  It also works for the even older DS1688/DS1691 RTC chips, which are
1009	  virtually the same and carry the same model number.  Both chips
1010	  have 114 bytes of user NVRAM.
1011
1012config RTC_DRV_DS17285
1013	bool "DS17285/DS17287"
1014	help
1015	  This enables support for the Dallas/Maxim DS17285/DS17287 real time
1016	  clock chip.
1017
1018	  This chip features 2kb of extended NV-SRAM.  It may possibly be
1019	  found in some SGI O2 systems (rare).
1020
1021config RTC_DRV_DS17485
1022	bool "DS17485/DS17487"
1023	help
1024	  This enables support for the Dallas/Maxim DS17485/DS17487 real time
1025	  clock chip.
1026
1027	  This chip features 4kb of extended NV-SRAM.
1028
1029config RTC_DRV_DS17885
1030	bool "DS17885/DS17887"
1031	help
1032	  This enables support for the Dallas/Maxim DS17885/DS17887 real time
1033	  clock chip.
1034
1035	  This chip features 8kb of extended NV-SRAM.
1036
1037endchoice
1038
1039config RTC_DRV_DS1742
1040	tristate "Maxim/Dallas DS1742/1743"
1041	depends on HAS_IOMEM
1042	help
1043	  If you say yes here you get support for the
1044	  Maxim/Dallas DS1742/1743 timekeeping chip.
1045
1046	  This driver can also be built as a module. If so, the module
1047	  will be called rtc-ds1742.
1048
1049config RTC_DRV_DS2404
1050	tristate "Maxim/Dallas DS2404"
1051	help
1052	  If you say yes here you get support for the
1053	  Dallas DS2404 RTC chip.
1054
1055	  This driver can also be built as a module. If so, the module
1056	  will be called rtc-ds2404.
1057
1058config RTC_DRV_DA9052
1059	tristate "Dialog DA9052/DA9053 RTC"
1060	depends on PMIC_DA9052
1061	help
1062	  Say y here to support the RTC driver for Dialog Semiconductor
1063	  DA9052-BC and DA9053-AA/Bx PMICs.
1064
1065config RTC_DRV_DA9055
1066	tristate "Dialog Semiconductor DA9055 RTC"
1067	depends on MFD_DA9055
1068	help
1069	  If you say yes here you will get support for the
1070	  RTC of the Dialog DA9055 PMIC.
1071
1072	  This driver can also be built as a module. If so, the module
1073	  will be called rtc-da9055
1074
1075config RTC_DRV_DA9063
1076	tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1077	depends on MFD_DA9063 || MFD_DA9062
1078	help
1079	  If you say yes here you will get support for the RTC subsystem
1080	  for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1081
1082	  This driver can also be built as a module. If so, the module
1083	  will be called "rtc-da9063".
1084
1085config RTC_DRV_EFI
1086	tristate "EFI RTC"
1087	depends on EFI && !X86
1088	help
1089	  If you say yes here you will get support for the EFI
1090	  Real Time Clock.
1091
1092	  This driver can also be built as a module. If so, the module
1093	  will be called rtc-efi.
1094
1095config RTC_DRV_STK17TA8
1096	tristate "Simtek STK17TA8"
1097	depends on HAS_IOMEM
1098	help
1099	  If you say yes here you get support for the
1100	  Simtek STK17TA8 timekeeping chip.
1101
1102	  This driver can also be built as a module. If so, the module
1103	  will be called rtc-stk17ta8.
1104
1105config RTC_DRV_M48T86
1106	tristate "ST M48T86/Dallas DS12887"
1107	help
1108	  If you say Y here you will get support for the
1109	  ST M48T86 and Dallas DS12887 RTC chips.
1110
1111	  This driver can also be built as a module. If so, the module
1112	  will be called rtc-m48t86.
1113
1114config RTC_DRV_M48T35
1115	tristate "ST M48T35"
1116	depends on HAS_IOMEM
1117	help
1118	  If you say Y here you will get support for the
1119	  ST M48T35 RTC chip.
1120
1121	  This driver can also be built as a module, if so, the module
1122	  will be called "rtc-m48t35".
1123
1124config RTC_DRV_M48T59
1125	tristate "ST M48T59/M48T08/M48T02"
1126	depends on HAS_IOMEM
1127	help
1128	  If you say Y here you will get support for the
1129	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1130
1131	  These chips are usually found in Sun SPARC and UltraSPARC
1132	  workstations.
1133
1134	  This driver can also be built as a module, if so, the module
1135	  will be called "rtc-m48t59".
1136
1137config RTC_DRV_MSM6242
1138	tristate "Oki MSM6242"
1139	depends on HAS_IOMEM
1140	help
1141	  If you say yes here you get support for the Oki MSM6242
1142	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1143
1144	  This driver can also be built as a module. If so, the module
1145	  will be called rtc-msm6242.
1146
1147config RTC_DRV_BQ4802
1148	tristate "TI BQ4802"
1149	depends on HAS_IOMEM
1150	help
1151	  If you say Y here you will get support for the TI
1152	  BQ4802 RTC chip.
1153
1154	  This driver can also be built as a module. If so, the module
1155	  will be called rtc-bq4802.
1156
1157config RTC_DRV_RP5C01
1158	tristate "Ricoh RP5C01"
1159	depends on HAS_IOMEM
1160	help
1161	  If you say yes here you get support for the Ricoh RP5C01
1162	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1163	  and A4000).
1164
1165	  This driver can also be built as a module. If so, the module
1166	  will be called rtc-rp5c01.
1167
1168config RTC_DRV_V3020
1169	tristate "EM Microelectronic V3020"
1170	help
1171	  If you say yes here you will get support for the
1172	  EM Microelectronic v3020 RTC chip.
1173
1174	  This driver can also be built as a module. If so, the module
1175	  will be called rtc-v3020.
1176
1177config RTC_DRV_WM831X
1178	tristate "Wolfson Microelectronics WM831x RTC"
1179	depends on MFD_WM831X
1180	help
1181	  If you say yes here you will get support for the RTC subsystem
1182	  of the Wolfson Microelectronics WM831X series PMICs.
1183
1184	  This driver can also be built as a module. If so, the module
1185	  will be called "rtc-wm831x".
1186
1187config RTC_DRV_WM8350
1188	tristate "Wolfson Microelectronics WM8350 RTC"
1189	depends on MFD_WM8350
1190	help
1191	  If you say yes here you will get support for the RTC subsystem
1192	  of the Wolfson Microelectronics WM8350.
1193
1194	  This driver can also be built as a module. If so, the module
1195	  will be called "rtc-wm8350".
1196
1197config RTC_DRV_SC27XX
1198	tristate "Spreadtrum SC27xx RTC"
1199	depends on MFD_SC27XX_PMIC || COMPILE_TEST
1200	help
1201	  If you say Y here you will get support for the RTC subsystem
1202	  of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs
1203	  includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.
1204
1205	  This driver can also be built as a module. If so, the module
1206	  will be called rtc-sc27xx.
1207
1208config RTC_DRV_SPEAR
1209	tristate "SPEAR ST RTC"
1210	depends on PLAT_SPEAR || COMPILE_TEST
1211	default y
1212	help
1213	 If you say Y here you will get support for the RTC found on
1214	 spear
1215
1216config RTC_DRV_PCF50633
1217	depends on MFD_PCF50633
1218	tristate "NXP PCF50633 RTC"
1219	help
1220	  If you say yes here you get support for the RTC subsystem of the
1221	  NXP PCF50633 used in embedded systems.
1222
1223config RTC_DRV_AB3100
1224	tristate "ST-Ericsson AB3100 RTC"
1225	depends on AB3100_CORE
1226	default y if AB3100_CORE
1227	help
1228	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1229	  support. This chip contains a battery- and capacitor-backed RTC.
1230
1231config RTC_DRV_AB8500
1232	tristate "ST-Ericsson AB8500 RTC"
1233	depends on AB8500_CORE
1234	select RTC_INTF_DEV
1235	select RTC_INTF_DEV_UIE_EMUL
1236	help
1237	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1238	  support. This chip contains a battery- and capacitor-backed RTC.
1239
1240config RTC_DRV_NUC900
1241	tristate "NUC910/NUC920 RTC driver"
1242	depends on ARCH_W90X900 || COMPILE_TEST
1243	help
1244	  If you say yes here you get support for the RTC subsystem of the
1245	  NUC910/NUC920 used in embedded systems.
1246
1247config RTC_DRV_OPAL
1248	tristate "IBM OPAL RTC driver"
1249	depends on PPC_POWERNV
1250	default y
1251	help
1252	  If you say yes here you get support for the PowerNV platform RTC
1253	  driver based on OPAL interfaces.
1254
1255	  This driver can also be built as a module. If so, the module
1256	  will be called rtc-opal.
1257
1258config RTC_DRV_ZYNQMP
1259	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1260	depends on OF
1261	help
1262	  If you say yes here you get support for the RTC controller found on
1263	  Xilinx Zynq Ultrascale+ MPSoC.
1264
1265config RTC_DRV_CROS_EC
1266	tristate "Chrome OS EC RTC driver"
1267	depends on MFD_CROS_EC
1268	help
1269	  If you say yes here you will get support for the
1270	  Chrome OS Embedded Controller's RTC.
1271
1272	  This driver can also be built as a module. If so, the module
1273	  will be called rtc-cros-ec.
1274
1275comment "on-CPU RTC drivers"
1276
1277config RTC_DRV_ASM9260
1278	tristate "Alphascale asm9260 RTC"
1279	depends on MACH_ASM9260 || COMPILE_TEST
1280	help
1281	  If you say yes here you get support for the RTC on the
1282	  Alphascale asm9260 SoC.
1283
1284	  This driver can also be built as a module. If so, the module
1285	  will be called rtc-asm9260.
1286
1287config RTC_DRV_DAVINCI
1288	tristate "TI DaVinci RTC"
1289	depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1290	help
1291	  If you say yes here you get support for the RTC on the
1292	  DaVinci platforms (DM365).
1293
1294	  This driver can also be built as a module. If so, the module
1295	  will be called rtc-davinci.
1296
1297config RTC_DRV_DIGICOLOR
1298	tristate "Conexant Digicolor RTC"
1299	depends on ARCH_DIGICOLOR || COMPILE_TEST
1300	help
1301	  If you say yes here you get support for the RTC on Conexant
1302	  Digicolor platforms. This currently includes the CX92755 SoC.
1303
1304	  This driver can also be built as a module. If so, the module
1305	  will be called rtc-digicolor.
1306
1307config RTC_DRV_IMXDI
1308	tristate "Freescale IMX DryIce Real Time Clock"
1309	depends on ARCH_MXC
1310	help
1311	   Support for Freescale IMX DryIce RTC
1312
1313	   This driver can also be built as a module, if so, the module
1314	   will be called "rtc-imxdi".
1315
1316config RTC_DRV_MESON
1317	tristate "Amlogic Meson RTC"
1318	depends on (ARM && ARCH_MESON) || COMPILE_TEST
1319	select REGMAP_MMIO
1320	help
1321	   Support for the RTC block on the Amlogic Meson6, Meson8, Meson8b
1322	   and Meson8m2 SoCs.
1323
1324	   This driver can also be built as a module, if so, the module
1325	   will be called "rtc-meson".
1326
1327config RTC_DRV_OMAP
1328	tristate "TI OMAP Real Time Clock"
1329	depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1330	depends on OF
1331	depends on PINCTRL
1332	select GENERIC_PINCONF
1333	help
1334	  Say "yes" here to support the on chip real time clock
1335	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1336
1337	  This driver can also be built as a module, if so, module
1338	  will be called rtc-omap.
1339
1340config HAVE_S3C_RTC
1341	bool
1342	help
1343	  This will include RTC support for Samsung SoCs. If
1344	  you want to include RTC support for any machine, kindly
1345	  select this in the respective mach-XXXX/Kconfig file.
1346
1347config RTC_DRV_S3C
1348	tristate "Samsung S3C series SoC RTC"
1349	depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1350	help
1351	  RTC (Realtime Clock) driver for the clock inbuilt into the
1352	  Samsung S3C24XX series of SoCs. This can provide periodic
1353	  interrupt rates from 1Hz to 64Hz for user programs, and
1354	  wakeup from Alarm.
1355
1356	  The driver currently supports the common features on all the
1357	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1358	  and S3C2442.
1359
1360	  This driver can also be build as a module. If so, the module
1361	  will be called rtc-s3c.
1362
1363config RTC_DRV_EP93XX
1364	tristate "Cirrus Logic EP93XX"
1365	depends on ARCH_EP93XX || COMPILE_TEST
1366	help
1367	  If you say yes here you get support for the
1368	  RTC embedded in the Cirrus Logic EP93XX processors.
1369
1370	  This driver can also be built as a module. If so, the module
1371	  will be called rtc-ep93xx.
1372
1373config RTC_DRV_SA1100
1374	tristate "SA11x0/PXA2xx/PXA910"
1375	depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1376	help
1377	  If you say Y here you will get access to the real time clock
1378	  built into your SA11x0 or PXA2xx CPU.
1379
1380	  To compile this driver as a module, choose M here: the
1381	  module will be called rtc-sa1100.
1382
1383config RTC_DRV_SH
1384	tristate "SuperH On-Chip RTC"
1385	depends on SUPERH || ARCH_RENESAS
1386	help
1387	  Say Y here to enable support for the on-chip RTC found in
1388	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1389
1390	  To compile this driver as a module, choose M here: the
1391	  module will be called rtc-sh.
1392
1393config RTC_DRV_VR41XX
1394	tristate "NEC VR41XX"
1395	depends on CPU_VR41XX || COMPILE_TEST
1396	help
1397	  If you say Y here you will get access to the real time clock
1398	  built into your NEC VR41XX CPU.
1399
1400	  To compile this driver as a module, choose M here: the
1401	  module will be called rtc-vr41xx.
1402
1403config RTC_DRV_PL030
1404	tristate "ARM AMBA PL030 RTC"
1405	depends on ARM_AMBA
1406	help
1407	  If you say Y here you will get access to ARM AMBA
1408	  PrimeCell PL030 RTC found on certain ARM SOCs.
1409
1410	  To compile this driver as a module, choose M here: the
1411	  module will be called rtc-pl030.
1412
1413config RTC_DRV_PL031
1414	tristate "ARM AMBA PL031 RTC"
1415	depends on ARM_AMBA
1416	help
1417	  If you say Y here you will get access to ARM AMBA
1418	  PrimeCell PL031 RTC found on certain ARM SOCs.
1419
1420	  To compile this driver as a module, choose M here: the
1421	  module will be called rtc-pl031.
1422
1423config RTC_DRV_AT91RM9200
1424	tristate "AT91RM9200 or some AT91SAM9 RTC"
1425	depends on ARCH_AT91 || COMPILE_TEST
1426	help
1427	  Driver for the internal RTC (Realtime Clock) module found on
1428	  Atmel AT91RM9200's and some  AT91SAM9 chips. On AT91SAM9 chips
1429	  this is powered by the backup power supply.
1430
1431config RTC_DRV_AT91SAM9
1432	tristate "AT91SAM9 RTT as RTC"
1433	depends on ARCH_AT91 || COMPILE_TEST
1434	depends on OF && HAS_IOMEM
1435	select MFD_SYSCON
1436	help
1437	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1438	  can be used as an RTC thanks to the backup power supply (e.g. a
1439	  small coin cell battery) which keeps this block and the GPBR
1440	  (General Purpose Backup Registers) block powered when the device
1441	  is shutdown.
1442	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1443	  probably want to use the real RTC block instead of the "RTT as an
1444	  RTC" driver.
1445
1446config RTC_DRV_AU1XXX
1447	tristate "Au1xxx Counter0 RTC support"
1448	depends on MIPS_ALCHEMY
1449	help
1450	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1451	  counter) to be used as a RTC.
1452
1453	  This driver can also be built as a module. If so, the module
1454	  will be called rtc-au1xxx.
1455
1456config RTC_DRV_RS5C313
1457	tristate "Ricoh RS5C313"
1458	depends on SH_LANDISK
1459	help
1460	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1461
1462config RTC_DRV_GENERIC
1463	tristate "Generic RTC support"
1464	# Please consider writing a new RTC driver instead of using the generic
1465	# RTC abstraction
1466	depends on PARISC || M68K || PPC || SUPERH32 || COMPILE_TEST
1467	help
1468	  Say Y or M here to enable RTC support on systems using the generic
1469	  RTC abstraction. If you do not know what you are doing, you should
1470	  just say Y.
1471
1472config RTC_DRV_PXA
1473	tristate "PXA27x/PXA3xx"
1474	depends on ARCH_PXA
1475	select RTC_DRV_SA1100
1476	help
1477         If you say Y here you will get access to the real time clock
1478         built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1479         consisting of an SA1100 compatible RTC and the extended PXA RTC.
1480
1481	 This RTC driver uses PXA RTC registers available since pxa27x
1482	 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1483
1484config RTC_DRV_VT8500
1485	tristate "VIA/WonderMedia 85xx SoC RTC"
1486	depends on ARCH_VT8500 || COMPILE_TEST
1487	help
1488	  If you say Y here you will get access to the real time clock
1489	  built into your VIA VT8500 SoC or its relatives.
1490
1491
1492config RTC_DRV_SUN4V
1493	bool "SUN4V Hypervisor RTC"
1494	depends on SPARC64
1495	help
1496	  If you say Y here you will get support for the Hypervisor
1497	  based RTC on SUN4V systems.
1498
1499config RTC_DRV_SUN6I
1500	bool "Allwinner A31 RTC"
1501	default MACH_SUN6I || MACH_SUN8I
1502	depends on COMMON_CLK
1503	depends on ARCH_SUNXI || COMPILE_TEST
1504	help
1505	  If you say Y here you will get support for the RTC found in
1506	  some Allwinner SoCs like the A31 or the A64.
1507
1508config RTC_DRV_SUNXI
1509	tristate "Allwinner sun4i/sun7i RTC"
1510	depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1511	help
1512	  If you say Y here you will get support for the RTC found on
1513	  Allwinner A10/A20.
1514
1515config RTC_DRV_STARFIRE
1516	bool "Starfire RTC"
1517	depends on SPARC64
1518	help
1519	  If you say Y here you will get support for the RTC found on
1520	  Starfire systems.
1521
1522config RTC_DRV_TX4939
1523	tristate "TX4939 SoC"
1524	depends on SOC_TX4939 || COMPILE_TEST
1525	help
1526	  Driver for the internal RTC (Realtime Clock) module found on
1527	  Toshiba TX4939 SoC.
1528
1529config RTC_DRV_MV
1530	tristate "Marvell SoC RTC"
1531	depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1532	help
1533	  If you say yes here you will get support for the in-chip RTC
1534	  that can be found in some of Marvell's SoC devices, such as
1535	  the Kirkwood 88F6281 and 88F6192.
1536
1537	  This driver can also be built as a module. If so, the module
1538	  will be called rtc-mv.
1539
1540config RTC_DRV_ARMADA38X
1541	tristate "Armada 38x Marvell SoC RTC"
1542	depends on ARCH_MVEBU || COMPILE_TEST
1543	help
1544	  If you say yes here you will get support for the in-chip RTC
1545	  that can be found in the Armada 38x Marvell's SoC device
1546
1547	  This driver can also be built as a module. If so, the module
1548	  will be called armada38x-rtc.
1549
1550config RTC_DRV_CADENCE
1551	tristate "Cadence RTC driver"
1552	depends on OF && HAS_IOMEM
1553	help
1554	  If you say Y here you will get access to Cadence RTC IP
1555	  found on certain SOCs.
1556
1557	  To compile this driver as a module, choose M here: the
1558	  module will be called rtc-cadence.
1559
1560config RTC_DRV_FTRTC010
1561	tristate "Faraday Technology FTRTC010 RTC"
1562	depends on HAS_IOMEM
1563	default ARCH_GEMINI
1564	help
1565	  If you say Y here you will get support for the
1566	  Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
1567
1568	  This driver can also be built as a module. If so, the module
1569	  will be called rtc-ftrtc010.
1570
1571config RTC_DRV_PS3
1572	tristate "PS3 RTC"
1573	depends on PPC_PS3
1574	help
1575	  If you say yes here you will get support for the RTC on PS3.
1576
1577	  This driver can also be built as a module. If so, the module
1578	  will be called rtc-ps3.
1579
1580config RTC_DRV_COH901331
1581	tristate "ST-Ericsson COH 901 331 RTC"
1582	depends on ARCH_U300 || COMPILE_TEST
1583	help
1584	  If you say Y here you will get access to ST-Ericsson
1585	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
1586	  Platforms.
1587
1588	  This driver can also be built as a module. If so, the module
1589	  will be called "rtc-coh901331".
1590
1591
1592config RTC_DRV_STMP
1593	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1594	depends on ARCH_MXS || COMPILE_TEST
1595	select STMP_DEVICE
1596	help
1597	  If you say yes here you will get support for the onboard
1598	  STMP3xxx/i.MX23/i.MX28 RTC.
1599
1600	  This driver can also be built as a module. If so, the module
1601	  will be called rtc-stmp3xxx.
1602
1603config RTC_DRV_PCAP
1604	tristate "PCAP RTC"
1605	depends on EZX_PCAP
1606	help
1607	  If you say Y here you will get support for the RTC found on
1608	  the PCAP2 ASIC used on some Motorola phones.
1609
1610config RTC_DRV_MC13XXX
1611	depends on MFD_MC13XXX
1612	tristate "Freescale MC13xxx RTC"
1613	help
1614	  This enables support for the RTCs found on Freescale's PMICs
1615	  MC13783 and MC13892.
1616
1617config RTC_DRV_MPC5121
1618	tristate "Freescale MPC5121 built-in RTC"
1619	depends on PPC_MPC512x || PPC_MPC52xx
1620	help
1621	  If you say yes here you will get support for the
1622	  built-in RTC on MPC5121 or on MPC5200.
1623
1624	  This driver can also be built as a module. If so, the module
1625	  will be called rtc-mpc5121.
1626
1627config RTC_DRV_JZ4740
1628	tristate "Ingenic JZ4740 SoC"
1629	depends on MIPS || COMPILE_TEST
1630	help
1631	  If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1632	  controllers.
1633
1634	  This driver can also be built as a module. If so, the module
1635	  will be called rtc-jz4740.
1636
1637config RTC_DRV_LPC24XX
1638	tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1639	depends on ARCH_LPC18XX || COMPILE_TEST
1640	depends on OF && HAS_IOMEM
1641	help
1642	  This enables support for the NXP RTC found which can be found on
1643	  NXP LPC178x/18xx/408x/43xx devices.
1644
1645	  If you have one of the devices above enable this driver to use
1646	  the hardware RTC. This driver can also be built as a module. If
1647	  so, the module will be called rtc-lpc24xx.
1648
1649config RTC_DRV_LPC32XX
1650	depends on ARCH_LPC32XX || COMPILE_TEST
1651	tristate "NXP LPC32XX RTC"
1652	help
1653	  This enables support for the NXP RTC in the LPC32XX
1654
1655	  This driver can also be built as a module. If so, the module
1656	  will be called rtc-lpc32xx.
1657
1658config RTC_DRV_PM8XXX
1659	tristate "Qualcomm PMIC8XXX RTC"
1660	depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1661	help
1662	  If you say yes here you get support for the
1663	  Qualcomm PMIC8XXX RTC.
1664
1665	  To compile this driver as a module, choose M here: the
1666	  module will be called rtc-pm8xxx.
1667
1668config RTC_DRV_TEGRA
1669	tristate "NVIDIA Tegra Internal RTC driver"
1670	depends on ARCH_TEGRA || COMPILE_TEST
1671	help
1672	  If you say yes here you get support for the
1673	  Tegra 200 series internal RTC module.
1674
1675	  This drive can also be built as a module. If so, the module
1676	  will be called rtc-tegra.
1677
1678config RTC_DRV_PUV3
1679	tristate "PKUnity v3 RTC support"
1680	depends on ARCH_PUV3
1681	help
1682	  This enables support for the RTC in the PKUnity-v3 SoCs.
1683
1684	  This drive can also be built as a module. If so, the module
1685	  will be called rtc-puv3.
1686
1687config RTC_DRV_LOONGSON1
1688	tristate "loongson1 RTC support"
1689	depends on MACH_LOONGSON32
1690	help
1691	  This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1692	  counter) to be used as a RTC.
1693
1694	  This driver can also be built as a module. If so, the module
1695	  will be called rtc-ls1x.
1696
1697config RTC_DRV_MXC
1698	tristate "Freescale MXC Real Time Clock"
1699	depends on ARCH_MXC
1700	help
1701	   If you say yes here you get support for the Freescale MXC
1702	   RTC module.
1703
1704	   This driver can also be built as a module, if so, the module
1705	   will be called "rtc-mxc".
1706
1707config RTC_DRV_MXC_V2
1708	tristate "Freescale MXC Real Time Clock for i.MX53"
1709	depends on ARCH_MXC
1710	help
1711	   If you say yes here you get support for the Freescale MXC
1712	   SRTC module in i.MX53 processor.
1713
1714	   This driver can also be built as a module, if so, the module
1715	   will be called "rtc-mxc_v2".
1716
1717config RTC_DRV_SNVS
1718	tristate "Freescale SNVS RTC support"
1719	select REGMAP_MMIO
1720	depends on HAS_IOMEM
1721	depends on OF
1722	help
1723	   If you say yes here you get support for the Freescale SNVS
1724	   Low Power (LP) RTC module.
1725
1726	   This driver can also be built as a module, if so, the module
1727	   will be called "rtc-snvs".
1728
1729config RTC_DRV_IMX_SC
1730	depends on IMX_SCU
1731	depends on HAVE_ARM_SMCCC
1732	tristate "NXP i.MX System Controller RTC support"
1733	help
1734	   If you say yes here you get support for the NXP i.MX System
1735	   Controller RTC module.
1736
1737config RTC_DRV_SIRFSOC
1738	tristate "SiRFSOC RTC"
1739	depends on ARCH_SIRF
1740	help
1741	  Say "yes" here to support the real time clock on SiRF SOC chips.
1742	  This driver can also be built as a module called rtc-sirfsoc.
1743
1744config RTC_DRV_ST_LPC
1745	tristate "STMicroelectronics LPC RTC"
1746	depends on ARCH_STI
1747	depends on OF
1748	help
1749	  Say Y here to include STMicroelectronics Low Power Controller
1750	  (LPC) based RTC support.
1751
1752	  To compile this driver as a module, choose M here: the
1753	  module will be called rtc-st-lpc.
1754
1755config RTC_DRV_MOXART
1756	tristate "MOXA ART RTC"
1757	depends on ARCH_MOXART || COMPILE_TEST
1758	help
1759	   If you say yes here you get support for the MOXA ART
1760	   RTC module.
1761
1762	   This driver can also be built as a module. If so, the module
1763	   will be called rtc-moxart
1764
1765config RTC_DRV_MT6397
1766	tristate "MediaTek PMIC based RTC"
1767	depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1768	help
1769	  This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
1770	  MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1771	  MediaTek(R) RTC driver.
1772
1773	  If you want to use MediaTek(R) RTC interface, select Y or M here.
1774
1775config RTC_DRV_MT7622
1776	tristate "MediaTek SoC based RTC"
1777	depends on ARCH_MEDIATEK || COMPILE_TEST
1778	help
1779	  This enables support for the real time clock built in the MediaTek
1780	  SoCs.
1781
1782	  This drive can also be built as a module. If so, the module
1783	  will be called rtc-mt7622.
1784
1785config RTC_DRV_XGENE
1786	tristate "APM X-Gene RTC"
1787	depends on HAS_IOMEM
1788	depends on ARCH_XGENE || COMPILE_TEST
1789	help
1790	  If you say yes here you get support for the APM X-Gene SoC real time
1791	  clock.
1792
1793	  This driver can also be built as a module, if so, the module
1794	  will be called "rtc-xgene".
1795
1796config RTC_DRV_PIC32
1797	tristate "Microchip PIC32 RTC"
1798	depends on MACH_PIC32
1799	default y
1800	help
1801	   If you say yes here you get support for the PIC32 RTC module.
1802
1803	   This driver can also be built as a module. If so, the module
1804	   will be called rtc-pic32
1805
1806config RTC_DRV_R7301
1807	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1808	select REGMAP_MMIO
1809	depends on OF && HAS_IOMEM
1810	help
1811	   If you say yes here you get support for the EPSON TOYOCOM
1812	   RTC-7301SF/DG chips.
1813
1814	   This driver can also be built as a module. If so, the module
1815	   will be called rtc-r7301.
1816
1817config RTC_DRV_STM32
1818	tristate "STM32 RTC"
1819	select REGMAP_MMIO
1820	depends on ARCH_STM32 || COMPILE_TEST
1821	help
1822	   If you say yes here you get support for the STM32 On-Chip
1823	   Real Time Clock.
1824
1825	   This driver can also be built as a module, if so, the module
1826	   will be called "rtc-stm32".
1827
1828config RTC_DRV_CPCAP
1829	depends on MFD_CPCAP
1830	tristate "Motorola CPCAP RTC"
1831	help
1832	   Say y here for CPCAP rtc found on some Motorola phones
1833	   and tablets such as Droid 4.
1834
1835config RTC_DRV_RTD119X
1836	bool "Realtek RTD129x RTC"
1837	depends on ARCH_REALTEK || COMPILE_TEST
1838	default ARCH_REALTEK
1839	help
1840	  If you say yes here, you get support for the RTD1295 SoC
1841	  Real Time Clock.
1842
1843config RTC_DRV_ASPEED
1844	tristate "ASPEED RTC"
1845	depends on OF
1846	depends on ARCH_ASPEED || COMPILE_TEST
1847	help
1848	  If you say yes here you get support for the ASPEED BMC SoC real time
1849	  clocks.
1850
1851	  This driver can also be built as a module, if so, the module
1852	  will be called "rtc-aspeed".
1853
1854comment "HID Sensor RTC drivers"
1855
1856config RTC_DRV_HID_SENSOR_TIME
1857	tristate "HID Sensor Time"
1858	depends on USB_HID
1859	depends on HID_SENSOR_HUB && IIO
1860	select HID_SENSOR_IIO_COMMON
1861	help
1862	  Say yes here to build support for the HID Sensors of type Time.
1863	  This drivers makes such sensors available as RTCs.
1864
1865	  If this driver is compiled as a module, it will be named
1866	  rtc-hid-sensor-time.
1867
1868config RTC_DRV_GOLDFISH
1869	tristate "Goldfish Real Time Clock"
1870	depends on OF && HAS_IOMEM
1871	depends on GOLDFISH || COMPILE_TEST
1872	help
1873	  Say yes to enable RTC driver for the Goldfish based virtual platform.
1874
1875	  Goldfish is a code name for the virtual platform developed by Google
1876	  for Android emulation.
1877
1878config RTC_DRV_WILCO_EC
1879	tristate "Wilco EC RTC"
1880	depends on WILCO_EC
1881	default m
1882	help
1883	  If you say yes here, you get read/write support for the Real Time
1884	  Clock on the Wilco Embedded Controller (Wilco is a kind of Chromebook)
1885
1886	  This can also be built as a module. If so, the module will
1887	  be named "rtc_wilco_ec".
1888
1889endif # RTC_CLASS
1890