xref: /openbmc/linux/drivers/rtc/Kconfig (revision c8ec3743)
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_ABX80X
189	tristate "Abracon ABx80x"
190	select WATCHDOG_CORE if WATCHDOG
191	help
192	  If you say yes here you get support for Abracon AB080X and AB180X
193	  families of ultra-low-power  battery- and capacitor-backed real-time
194	  clock chips.
195
196	  This driver can also be built as a module. If so, the module
197	  will be called rtc-abx80x.
198
199config RTC_DRV_AC100
200	tristate "X-Powers AC100"
201	depends on MFD_AC100
202	help
203	  If you say yes here you get support for the real-time clock found
204	  in X-Powers AC100 family peripheral ICs.
205
206	  This driver can also be built as a module. If so, the module
207	  will be called rtc-ac100.
208
209config RTC_DRV_BRCMSTB
210	tristate "Broadcom STB wake-timer"
211	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
212	default ARCH_BRCMSTB || BMIPS_GENERIC
213	help
214	  If you say yes here you get support for the wake-timer found on
215	  Broadcom STB SoCs (BCM7xxx).
216
217	  This driver can also be built as a module. If so, the module will
218	  be called rtc-brcmstb-waketimer.
219
220config RTC_DRV_AS3722
221	tristate "ams AS3722 RTC driver"
222	depends on MFD_AS3722
223	help
224	  If you say yes here you get support for the RTC of ams AS3722 PMIC
225	  chips.
226
227	  This driver can also be built as a module. If so, the module
228	  will be called rtc-as3722.
229
230config RTC_DRV_DS1307
231	tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
232	help
233	  If you say yes here you get support for various compatible RTC
234	  chips (often with battery backup) connected with I2C. This driver
235	  should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341,
236	  ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
237	  In some cases the RTC must already have been initialized (by
238	  manufacturing or a bootloader).
239
240	  The first seven registers on these chips hold an RTC, and other
241	  registers may add features such as NVRAM, a trickle charger for
242	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
243	  sysfs, but other chip features may not be available.
244
245	  This driver can also be built as a module. If so, the module
246	  will be called rtc-ds1307.
247
248config RTC_DRV_DS1307_CENTURY
249	bool "Century bit support for rtc-ds1307"
250	depends on RTC_DRV_DS1307
251	default n
252	help
253	  The DS1307 driver suffered from a bug where it was enabling the
254	  century bit inconditionnally but never used it when reading the time.
255	  It made the driver unable to support dates beyond 2099.
256	  Setting this option will add proper support for the century bit but if
257	  the time was previously set using a kernel predating this option,
258	  reading the date will return a date in the next century.
259	  To solve that, you could boot a kernel without this option set, set
260	  the RTC date and then boot a kernel with this option set.
261
262config RTC_DRV_DS1374
263	tristate "Dallas/Maxim DS1374"
264	help
265	  If you say yes here you get support for Dallas Semiconductor
266	  DS1374 real-time clock chips. If an interrupt is associated
267	  with the device, the alarm functionality is supported.
268
269	  This driver can also be built as a module. If so, the module
270	  will be called rtc-ds1374.
271
272config RTC_DRV_DS1374_WDT
273	bool "Dallas/Maxim DS1374 watchdog timer"
274	depends on RTC_DRV_DS1374
275	help
276	  If you say Y here you will get support for the
277	  watchdog timer in the Dallas Semiconductor DS1374
278	  real-time clock chips.
279
280config RTC_DRV_DS1672
281	tristate "Dallas/Maxim DS1672"
282	help
283	  If you say yes here you get support for the
284	  Dallas/Maxim DS1672 timekeeping chip.
285
286	  This driver can also be built as a module. If so, the module
287	  will be called rtc-ds1672.
288
289config RTC_DRV_HYM8563
290	tristate "Haoyu Microelectronics HYM8563"
291	depends on OF
292	help
293	  Say Y to enable support for the HYM8563 I2C RTC chip. Apart
294	  from the usual rtc functions it provides a clock output of
295	  up to 32kHz.
296
297	  This driver can also be built as a module. If so, the module
298	  will be called rtc-hym8563.
299
300config RTC_DRV_LP8788
301	tristate "TI LP8788 RTC driver"
302	depends on MFD_LP8788
303	help
304	  Say Y to enable support for the LP8788 RTC/ALARM driver.
305
306config RTC_DRV_MAX6900
307	tristate "Maxim MAX6900"
308	help
309	  If you say yes here you will get support for the
310	  Maxim MAX6900 I2C RTC chip.
311
312	  This driver can also be built as a module. If so, the module
313	  will be called rtc-max6900.
314
315config RTC_DRV_MAX8907
316	tristate "Maxim MAX8907"
317	depends on MFD_MAX8907 || COMPILE_TEST
318	help
319	  If you say yes here you will get support for the
320	  RTC of Maxim MAX8907 PMIC.
321
322	  This driver can also be built as a module. If so, the module
323	  will be called rtc-max8907.
324
325config RTC_DRV_MAX8925
326	tristate "Maxim MAX8925"
327	depends on MFD_MAX8925
328	help
329	  If you say yes here you will get support for the
330	  RTC of Maxim MAX8925 PMIC.
331
332	  This driver can also be built as a module. If so, the module
333	  will be called rtc-max8925.
334
335config RTC_DRV_MAX8998
336	tristate "Maxim MAX8998"
337	depends on MFD_MAX8998
338	help
339	  If you say yes here you will get support for the
340	  RTC of Maxim MAX8998 PMIC.
341
342	  This driver can also be built as a module. If so, the module
343	  will be called rtc-max8998.
344
345config RTC_DRV_MAX8997
346	tristate "Maxim MAX8997"
347	depends on MFD_MAX8997
348	help
349	  If you say yes here you will get support for the
350	  RTC of Maxim MAX8997 PMIC.
351
352	  This driver can also be built as a module. If so, the module
353	  will be called rtc-max8997.
354
355config RTC_DRV_MAX77686
356	tristate "Maxim MAX77686"
357	depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
358	help
359	  If you say yes here you will get support for the
360	  RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
361
362	  This driver can also be built as a module. If so, the module
363	  will be called rtc-max77686.
364
365config RTC_DRV_RK808
366	tristate "Rockchip RK805/RK808/RK818 RTC"
367	depends on MFD_RK808
368	help
369	  If you say yes here you will get support for the
370	  RTC of RK805, RK808 and RK818 PMIC.
371
372	  This driver can also be built as a module. If so, the module
373	  will be called rk808-rtc.
374
375config RTC_DRV_RS5C372
376	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
377	help
378	  If you say yes here you get support for the
379	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
380
381	  This driver can also be built as a module. If so, the module
382	  will be called rtc-rs5c372.
383
384config RTC_DRV_ISL1208
385	tristate "Intersil ISL1208"
386	help
387	  If you say yes here you get support for the
388	  Intersil ISL1208 RTC chip.
389
390	  This driver can also be built as a module. If so, the module
391	  will be called rtc-isl1208.
392
393config RTC_DRV_ISL12022
394	tristate "Intersil ISL12022"
395	help
396	  If you say yes here you get support for the
397	  Intersil ISL12022 RTC chip.
398
399	  This driver can also be built as a module. If so, the module
400	  will be called rtc-isl12022.
401
402config RTC_DRV_ISL12026
403	tristate "Intersil ISL12026"
404	depends on OF || COMPILE_TEST
405	help
406	  If you say yes here you get support for the
407	  Intersil ISL12026 RTC chip.
408
409	  This driver can also be built as a module. If so, the module
410	  will be called rtc-isl12026.
411
412config RTC_DRV_X1205
413	tristate "Xicor/Intersil X1205"
414	help
415	  If you say yes here you get support for the
416	  Xicor/Intersil X1205 RTC chip.
417
418	  This driver can also be built as a module. If so, the module
419	  will be called rtc-x1205.
420
421config RTC_DRV_PCF8523
422	tristate "NXP PCF8523"
423	help
424	  If you say yes here you get support for the NXP PCF8523 RTC
425	  chips.
426
427	  This driver can also be built as a module. If so, the module
428	  will be called rtc-pcf8523.
429
430config RTC_DRV_PCF85063
431	tristate "NXP PCF85063"
432	help
433	  If you say yes here you get support for the PCF85063 RTC chip
434
435	  This driver can also be built as a module. If so, the module
436	  will be called rtc-pcf85063.
437
438config RTC_DRV_PCF85363
439	tristate "NXP PCF85363"
440	depends on I2C
441	select REGMAP_I2C
442	help
443	  If you say yes here you get support for the PCF85363 RTC chip.
444
445	  This driver can also be built as a module. If so, the module
446	  will be called rtc-pcf85363.
447
448	  The nvmem interface will be named pcf85363-#, where # is the
449	  zero-based instance number.
450
451config RTC_DRV_PCF8563
452	tristate "Philips PCF8563/Epson RTC8564"
453	help
454	  If you say yes here you get support for the
455	  Philips PCF8563 RTC chip. The Epson RTC8564
456	  should work as well.
457
458	  This driver can also be built as a module. If so, the module
459	  will be called rtc-pcf8563.
460
461config RTC_DRV_PCF8583
462	tristate "Philips PCF8583"
463	help
464	  If you say yes here you get support for the Philips PCF8583
465	  RTC chip found on Acorn RiscPCs. This driver supports the
466	  platform specific method of retrieving the current year from
467	  the RTC's SRAM. It will work on other platforms with the same
468	  chip, but the year will probably have to be tweaked.
469
470	  This driver can also be built as a module. If so, the module
471	  will be called rtc-pcf8583.
472
473config RTC_DRV_M41T80
474	tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
475	help
476	  If you say Y here you will get support for the ST M41T60
477	  and M41T80 RTC chips series. Currently, the following chips are
478	  supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
479	  M41ST85, M41ST87, and MicroCrystal RV4162.
480
481	  This driver can also be built as a module. If so, the module
482	  will be called rtc-m41t80.
483
484config RTC_DRV_M41T80_WDT
485	bool "ST M41T65/M41T80 series RTC watchdog timer"
486	depends on RTC_DRV_M41T80
487	help
488	  If you say Y here you will get support for the
489	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
490
491config RTC_DRV_BQ32K
492	tristate "TI BQ32000"
493	help
494	  If you say Y here you will get support for the TI
495	  BQ32000 I2C RTC chip.
496
497	  This driver can also be built as a module. If so, the module
498	  will be called rtc-bq32k.
499
500config RTC_DRV_DM355EVM
501	tristate "TI DaVinci DM355 EVM RTC"
502	depends on MFD_DM355EVM_MSP
503	help
504	  Supports the RTC firmware in the MSP430 on the DM355 EVM.
505
506config RTC_DRV_TWL92330
507	bool "TI TWL92330/Menelaus"
508	depends on MENELAUS
509	help
510	  If you say yes here you get support for the RTC on the
511	  TWL92330 "Menelaus" power management chip, used with OMAP2
512	  platforms. The support is integrated with the rest of
513	  the Menelaus driver; it's not separate module.
514
515config RTC_DRV_TWL4030
516	tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
517	depends on TWL4030_CORE
518	depends on OF
519	help
520	  If you say yes here you get support for the RTC on the
521	  TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
522
523	  This driver can also be built as a module. If so, the module
524	  will be called rtc-twl.
525
526config RTC_DRV_PALMAS
527	tristate "TI Palmas RTC driver"
528	depends on MFD_PALMAS
529	help
530	  If you say yes here you get support for the RTC of TI PALMA series PMIC
531	  chips.
532
533	  This driver can also be built as a module. If so, the module
534	  will be called rtc-palma.
535
536config RTC_DRV_TPS6586X
537	tristate "TI TPS6586X RTC driver"
538	depends on MFD_TPS6586X
539	help
540	  TI Power Management IC TPS6586X supports RTC functionality
541	  along with alarm. This driver supports the RTC driver for
542	  the TPS6586X RTC module.
543
544config RTC_DRV_TPS65910
545	tristate "TI TPS65910 RTC driver"
546	depends on RTC_CLASS && MFD_TPS65910
547	help
548	  If you say yes here you get support for the RTC on the
549	  TPS65910 chips.
550
551	  This driver can also be built as a module. If so, the module
552	  will be called rtc-tps65910.
553
554config RTC_DRV_TPS80031
555	tristate "TI TPS80031/TPS80032 RTC driver"
556	depends on MFD_TPS80031
557	help
558	  TI Power Management IC TPS80031 supports RTC functionality
559	  along with alarm. This driver supports the RTC driver for
560	  the TPS80031 RTC module.
561
562config RTC_DRV_RC5T583
563	tristate "RICOH 5T583 RTC driver"
564	depends on MFD_RC5T583
565	help
566	  If you say yes here you get support for the RTC on the
567	  RICOH 5T583 chips.
568
569	  This driver can also be built as a module. If so, the module
570	  will be called rtc-rc5t583.
571
572config RTC_DRV_S35390A
573	tristate "Seiko Instruments S-35390A"
574	select BITREVERSE
575	help
576	  If you say yes here you will get support for the Seiko
577	  Instruments S-35390A.
578
579	  This driver can also be built as a module. If so the module
580	  will be called rtc-s35390a.
581
582config RTC_DRV_FM3130
583	tristate "Ramtron FM3130"
584	help
585	  If you say Y here you will get support for the
586	  Ramtron FM3130 RTC chips.
587	  Ramtron FM3130 is a chip with two separate devices inside,
588	  RTC clock and FRAM. This driver provides only RTC functionality.
589
590	  This driver can also be built as a module. If so the module
591	  will be called rtc-fm3130.
592
593config RTC_DRV_RX8010
594	tristate "Epson RX8010SJ"
595	depends on I2C
596	help
597	  If you say yes here you get support for the Epson RX8010SJ RTC
598	  chip.
599
600	  This driver can also be built as a module. If so, the module
601	  will be called rtc-rx8010.
602
603config RTC_DRV_RX8581
604	tristate "Epson RX-8581"
605	help
606	  If you say yes here you will get support for the Epson RX-8581.
607
608	  This driver can also be built as a module. If so the module
609	  will be called rtc-rx8581.
610
611config RTC_DRV_RX8025
612	tristate "Epson RX-8025SA/NB"
613	help
614	  If you say yes here you get support for the Epson
615	  RX-8025SA/NB RTC chips.
616
617	  This driver can also be built as a module. If so, the module
618	  will be called rtc-rx8025.
619
620config RTC_DRV_EM3027
621	tristate "EM Microelectronic EM3027"
622	help
623	  If you say yes here you get support for the EM
624	  Microelectronic EM3027 RTC chips.
625
626	  This driver can also be built as a module. If so, the module
627	  will be called rtc-em3027.
628
629config RTC_DRV_RV8803
630	tristate "Micro Crystal RV8803, Epson RX8900"
631	help
632	  If you say yes here you get support for the Micro Crystal RV8803 and
633	  Epson RX8900 RTC chips.
634
635	  This driver can also be built as a module. If so, the module
636	  will be called rtc-rv8803.
637
638config RTC_DRV_S5M
639	tristate "Samsung S2M/S5M series"
640	depends on MFD_SEC_CORE || COMPILE_TEST
641	select REGMAP_IRQ
642	help
643	  If you say yes here you will get support for the
644	  RTC of Samsung S2MPS14 and S5M PMIC series.
645
646	  This driver can also be built as a module. If so, the module
647	  will be called rtc-s5m.
648
649endif # I2C
650
651comment "SPI RTC drivers"
652
653if SPI_MASTER
654
655config RTC_DRV_M41T93
656	tristate "ST M41T93"
657	help
658	  If you say yes here you will get support for the
659	  ST M41T93 SPI RTC chip.
660
661	  This driver can also be built as a module. If so, the module
662	  will be called rtc-m41t93.
663
664config RTC_DRV_M41T94
665	tristate "ST M41T94"
666	help
667	  If you say yes here you will get support for the
668	  ST M41T94 SPI RTC chip.
669
670	  This driver can also be built as a module. If so, the module
671	  will be called rtc-m41t94.
672
673config RTC_DRV_DS1302
674	tristate "Dallas/Maxim DS1302"
675	depends on SPI
676	help
677	  If you say yes here you get support for the Dallas DS1302 RTC chips.
678
679	  This driver can also be built as a module. If so, the module
680	  will be called rtc-ds1302.
681
682config RTC_DRV_DS1305
683	tristate "Dallas/Maxim DS1305/DS1306"
684	help
685	  Select this driver to get support for the Dallas/Maxim DS1305
686	  and DS1306 real time clock chips. These support a trickle
687	  charger, alarms, and NVRAM in addition to the clock.
688
689	  This driver can also be built as a module. If so, the module
690	  will be called rtc-ds1305.
691
692config RTC_DRV_DS1343
693	select REGMAP_SPI
694	tristate "Dallas/Maxim DS1343/DS1344"
695	help
696	  If you say yes here you get support for the
697	  Dallas/Maxim DS1343 and DS1344 real time clock chips.
698	  Support for trickle charger, alarm is provided.
699
700	  This driver can also be built as a module. If so, the module
701	  will be called rtc-ds1343.
702
703config RTC_DRV_DS1347
704	select REGMAP_SPI
705	tristate "Dallas/Maxim DS1347"
706	help
707	  If you say yes here you get support for the
708	  Dallas/Maxim DS1347 chips.
709
710	  This driver only supports the RTC feature, and not other chip
711	  features such as alarms.
712
713	  This driver can also be built as a module. If so, the module
714	  will be called rtc-ds1347.
715
716config RTC_DRV_DS1390
717	tristate "Dallas/Maxim DS1390/93/94"
718	help
719	  If you say yes here you get support for the
720	  Dallas/Maxim DS1390/93/94 chips.
721
722	  This driver supports the RTC feature and trickle charging but not
723	  other chip features such as alarms.
724
725	  This driver can also be built as a module. If so, the module
726	  will be called rtc-ds1390.
727
728config RTC_DRV_MAX6916
729	tristate "Maxim MAX6916"
730	help
731	  If you say yes here you will get support for the
732	  Maxim MAX6916 SPI RTC chip.
733
734	  This driver only supports the RTC feature, and not other chip
735	  features such as alarms.
736
737	  This driver can also be built as a module. If so, the module
738	  will be called rtc-max6916.
739
740config RTC_DRV_R9701
741	tristate "Epson RTC-9701JE"
742	help
743	  If you say yes here you will get support for the
744	  Epson RTC-9701JE SPI RTC chip.
745
746	  This driver can also be built as a module. If so, the module
747	  will be called rtc-r9701.
748
749config RTC_DRV_RX4581
750	tristate "Epson RX-4581"
751	help
752	  If you say yes here you will get support for the Epson RX-4581.
753
754	  This driver can also be built as a module. If so the module
755	  will be called rtc-rx4581.
756
757config RTC_DRV_RX6110
758	tristate "Epson RX-6110"
759	select REGMAP_SPI
760	help
761	  If you say yes here you will get support for the Epson RX-6610.
762
763	  This driver can also be built as a module. If so the module
764	  will be called rtc-rx6110.
765
766config RTC_DRV_RS5C348
767	tristate "Ricoh RS5C348A/B"
768	help
769	  If you say yes here you get support for the
770	  Ricoh RS5C348A and RS5C348B RTC chips.
771
772	  This driver can also be built as a module. If so, the module
773	  will be called rtc-rs5c348.
774
775config RTC_DRV_MAX6902
776	tristate "Maxim MAX6902"
777	help
778	  If you say yes here you will get support for the
779	  Maxim MAX6902 SPI RTC chip.
780
781	  This driver can also be built as a module. If so, the module
782	  will be called rtc-max6902.
783
784config RTC_DRV_PCF2123
785	tristate "NXP PCF2123"
786	help
787	  If you say yes here you get support for the NXP PCF2123
788	  RTC chip.
789
790	  This driver can also be built as a module. If so, the module
791	  will be called rtc-pcf2123.
792
793config RTC_DRV_MCP795
794	tristate "Microchip MCP795"
795	help
796	  If you say yes here you will get support for the Microchip MCP795.
797
798	  This driver can also be built as a module. If so the module
799	  will be called rtc-mcp795.
800
801endif # SPI_MASTER
802
803#
804# Helper to resolve issues with configs that have SPI enabled but I2C
805# modular.  See SND_SOC_I2C_AND_SPI for more information
806#
807config RTC_I2C_AND_SPI
808	tristate
809	default m if I2C=m
810	default y if I2C=y
811	default y if SPI_MASTER=y
812	select REGMAP_I2C if I2C
813	select REGMAP_SPI if SPI_MASTER
814
815comment "SPI and I2C RTC drivers"
816
817config RTC_DRV_DS3232
818	tristate "Dallas/Maxim DS3232/DS3234"
819	depends on RTC_I2C_AND_SPI
820	help
821	  If you say yes here you get support for Dallas Semiconductor
822	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
823	  with the device, the alarm functionality is supported.
824
825	  This driver can also be built as a module.  If so, the module
826	  will be called rtc-ds3232.
827
828config RTC_DRV_DS3232_HWMON
829	bool "HWMON support for Dallas/Maxim DS3232/DS3234"
830	depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
831	default y
832	help
833	  Say Y here if you want to expose temperature sensor data on
834	  rtc-ds3232
835
836config RTC_DRV_PCF2127
837	tristate "NXP PCF2127"
838	depends on RTC_I2C_AND_SPI
839	help
840	  If you say yes here you get support for the NXP PCF2127/29 RTC
841	  chips.
842
843	  This driver can also be built as a module. If so, the module
844	  will be called rtc-pcf2127.
845
846config RTC_DRV_RV3029C2
847	tristate "Micro Crystal RV3029/3049"
848	depends on RTC_I2C_AND_SPI
849	help
850	  If you say yes here you get support for the Micro Crystal
851	  RV3029 and RV3049 RTC chips.
852
853	  This driver can also be built as a module. If so, the module
854	  will be called rtc-rv3029c2.
855
856config RTC_DRV_RV3029_HWMON
857	bool "HWMON support for RV3029/3049"
858	depends on RTC_DRV_RV3029C2 && HWMON
859	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
860	default y
861	help
862	  Say Y here if you want to expose temperature sensor data on
863	  rtc-rv3029.
864
865comment "Platform RTC drivers"
866
867# this 'CMOS' RTC driver is arch dependent because it requires
868# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
869# global rtc_lock ... it's not yet just another platform_device.
870
871config RTC_DRV_CMOS
872	tristate "PC-style 'CMOS'"
873	depends on X86 || ARM || PPC || MIPS || SPARC64
874	default y if X86
875	select RTC_MC146818_LIB
876	help
877	  Say "yes" here to get direct support for the real time clock
878	  found in every PC or ACPI-based system, and some other boards.
879	  Specifically the original MC146818, compatibles like those in
880	  PC south bridges, the DS12887 or M48T86, some multifunction
881	  or LPC bus chips, and so on.
882
883	  Your system will need to define the platform device used by
884	  this driver, otherwise it won't be accessible. This means
885	  you can safely enable this driver if you don't know whether
886	  or not your board has this kind of hardware.
887
888	  This driver can also be built as a module. If so, the module
889	  will be called rtc-cmos.
890
891config RTC_DRV_ALPHA
892	bool "Alpha PC-style CMOS"
893	depends on ALPHA
894	select RTC_MC146818_LIB
895	default y
896	help
897	  Direct support for the real-time clock found on every Alpha
898	  system, specifically MC146818 compatibles.  If in doubt, say Y.
899
900config RTC_DRV_VRTC
901	tristate "Virtual RTC for Intel MID platforms"
902	depends on X86_INTEL_MID
903	default y if X86_INTEL_MID
904
905	help
906	Say "yes" here to get direct support for the real time clock
907	found on Moorestown platforms. The VRTC is a emulated RTC that
908	derives its clock source from a real RTC in the PMIC. The MC146818
909	style programming interface is mostly conserved, but any
910	updates are done via IPC calls to the system controller FW.
911
912config RTC_DRV_DS1216
913	tristate "Dallas DS1216"
914	depends on SNI_RM
915	help
916	  If you say yes here you get support for the Dallas DS1216 RTC chips.
917
918config RTC_DRV_DS1286
919	tristate "Dallas DS1286"
920	depends on HAS_IOMEM
921	help
922	  If you say yes here you get support for the Dallas DS1286 RTC chips.
923
924config RTC_DRV_DS1511
925	tristate "Dallas DS1511"
926	depends on HAS_IOMEM
927	help
928	  If you say yes here you get support for the
929	  Dallas DS1511 timekeeping/watchdog chip.
930
931	  This driver can also be built as a module. If so, the module
932	  will be called rtc-ds1511.
933
934config RTC_DRV_DS1553
935	tristate "Maxim/Dallas DS1553"
936	depends on HAS_IOMEM
937	help
938	  If you say yes here you get support for the
939	  Maxim/Dallas DS1553 timekeeping chip.
940
941	  This driver can also be built as a module. If so, the module
942	  will be called rtc-ds1553.
943
944config RTC_DRV_DS1685_FAMILY
945	tristate "Dallas/Maxim DS1685 Family"
946	help
947	  If you say yes here you get support for the Dallas/Maxim DS1685
948	  family of real time chips.  This family includes the DS1685/DS1687,
949	  DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
950	  DS17885/DS17887 chips.
951
952	  This driver can also be built as a module. If so, the module
953	  will be called rtc-ds1685.
954
955choice
956	prompt "Subtype"
957	depends on RTC_DRV_DS1685_FAMILY
958	default RTC_DRV_DS1685
959
960config RTC_DRV_DS1685
961	bool "DS1685/DS1687"
962	help
963	  This enables support for the Dallas/Maxim DS1685/DS1687 real time
964	  clock chip.
965
966	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
967	  systems, as well as EPPC-405-UC modules by electronic system design
968	  GmbH.
969
970config RTC_DRV_DS1689
971	bool "DS1689/DS1693"
972	help
973	  This enables support for the Dallas/Maxim DS1689/DS1693 real time
974	  clock chip.
975
976	  This is an older RTC chip, supplanted by the DS1685/DS1687 above,
977	  which supports a few minor features such as Vcc, Vbat, and Power
978	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
979
980	  It also works for the even older DS1688/DS1691 RTC chips, which are
981	  virtually the same and carry the same model number.  Both chips
982	  have 114 bytes of user NVRAM.
983
984config RTC_DRV_DS17285
985	bool "DS17285/DS17287"
986	help
987	  This enables support for the Dallas/Maxim DS17285/DS17287 real time
988	  clock chip.
989
990	  This chip features 2kb of extended NV-SRAM.  It may possibly be
991	  found in some SGI O2 systems (rare).
992
993config RTC_DRV_DS17485
994	bool "DS17485/DS17487"
995	help
996	  This enables support for the Dallas/Maxim DS17485/DS17487 real time
997	  clock chip.
998
999	  This chip features 4kb of extended NV-SRAM.
1000
1001config RTC_DRV_DS17885
1002	bool "DS17885/DS17887"
1003	help
1004	  This enables support for the Dallas/Maxim DS17885/DS17887 real time
1005	  clock chip.
1006
1007	  This chip features 8kb of extended NV-SRAM.
1008
1009endchoice
1010
1011config RTC_DRV_DS1742
1012	tristate "Maxim/Dallas DS1742/1743"
1013	depends on HAS_IOMEM
1014	help
1015	  If you say yes here you get support for the
1016	  Maxim/Dallas DS1742/1743 timekeeping chip.
1017
1018	  This driver can also be built as a module. If so, the module
1019	  will be called rtc-ds1742.
1020
1021config RTC_DRV_DS2404
1022	tristate "Maxim/Dallas DS2404"
1023	help
1024	  If you say yes here you get support for the
1025	  Dallas DS2404 RTC chip.
1026
1027	  This driver can also be built as a module. If so, the module
1028	  will be called rtc-ds2404.
1029
1030config RTC_DRV_DA9052
1031	tristate "Dialog DA9052/DA9053 RTC"
1032	depends on PMIC_DA9052
1033	help
1034	  Say y here to support the RTC driver for Dialog Semiconductor
1035	  DA9052-BC and DA9053-AA/Bx PMICs.
1036
1037config RTC_DRV_DA9055
1038	tristate "Dialog Semiconductor DA9055 RTC"
1039	depends on MFD_DA9055
1040	help
1041	  If you say yes here you will get support for the
1042	  RTC of the Dialog DA9055 PMIC.
1043
1044	  This driver can also be built as a module. If so, the module
1045	  will be called rtc-da9055
1046
1047config RTC_DRV_DA9063
1048	tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1049	depends on MFD_DA9063 || MFD_DA9062
1050	help
1051	  If you say yes here you will get support for the RTC subsystem
1052	  for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1053
1054	  This driver can also be built as a module. If so, the module
1055	  will be called "rtc-da9063".
1056
1057config RTC_DRV_EFI
1058	tristate "EFI RTC"
1059	depends on EFI && !X86
1060	help
1061	  If you say yes here you will get support for the EFI
1062	  Real Time Clock.
1063
1064	  This driver can also be built as a module. If so, the module
1065	  will be called rtc-efi.
1066
1067config RTC_DRV_STK17TA8
1068	tristate "Simtek STK17TA8"
1069	depends on HAS_IOMEM
1070	help
1071	  If you say yes here you get support for the
1072	  Simtek STK17TA8 timekeeping chip.
1073
1074	  This driver can also be built as a module. If so, the module
1075	  will be called rtc-stk17ta8.
1076
1077config RTC_DRV_M48T86
1078	tristate "ST M48T86/Dallas DS12887"
1079	help
1080	  If you say Y here you will get support for the
1081	  ST M48T86 and Dallas DS12887 RTC chips.
1082
1083	  This driver can also be built as a module. If so, the module
1084	  will be called rtc-m48t86.
1085
1086config RTC_DRV_M48T35
1087	tristate "ST M48T35"
1088	depends on HAS_IOMEM
1089	help
1090	  If you say Y here you will get support for the
1091	  ST M48T35 RTC chip.
1092
1093	  This driver can also be built as a module, if so, the module
1094	  will be called "rtc-m48t35".
1095
1096config RTC_DRV_M48T59
1097	tristate "ST M48T59/M48T08/M48T02"
1098	depends on HAS_IOMEM
1099	help
1100	  If you say Y here you will get support for the
1101	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1102
1103	  These chips are usually found in Sun SPARC and UltraSPARC
1104	  workstations.
1105
1106	  This driver can also be built as a module, if so, the module
1107	  will be called "rtc-m48t59".
1108
1109config RTC_DRV_MSM6242
1110	tristate "Oki MSM6242"
1111	depends on HAS_IOMEM
1112	help
1113	  If you say yes here you get support for the Oki MSM6242
1114	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1115
1116	  This driver can also be built as a module. If so, the module
1117	  will be called rtc-msm6242.
1118
1119config RTC_DRV_BQ4802
1120	tristate "TI BQ4802"
1121	depends on HAS_IOMEM
1122	help
1123	  If you say Y here you will get support for the TI
1124	  BQ4802 RTC chip.
1125
1126	  This driver can also be built as a module. If so, the module
1127	  will be called rtc-bq4802.
1128
1129config RTC_DRV_RP5C01
1130	tristate "Ricoh RP5C01"
1131	depends on HAS_IOMEM
1132	help
1133	  If you say yes here you get support for the Ricoh RP5C01
1134	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1135	  and A4000).
1136
1137	  This driver can also be built as a module. If so, the module
1138	  will be called rtc-rp5c01.
1139
1140config RTC_DRV_V3020
1141	tristate "EM Microelectronic V3020"
1142	help
1143	  If you say yes here you will get support for the
1144	  EM Microelectronic v3020 RTC chip.
1145
1146	  This driver can also be built as a module. If so, the module
1147	  will be called rtc-v3020.
1148
1149config RTC_DRV_WM831X
1150	tristate "Wolfson Microelectronics WM831x RTC"
1151	depends on MFD_WM831X
1152	help
1153	  If you say yes here you will get support for the RTC subsystem
1154	  of the Wolfson Microelectronics WM831X series PMICs.
1155
1156	  This driver can also be built as a module. If so, the module
1157	  will be called "rtc-wm831x".
1158
1159config RTC_DRV_WM8350
1160	tristate "Wolfson Microelectronics WM8350 RTC"
1161	depends on MFD_WM8350
1162	help
1163	  If you say yes here you will get support for the RTC subsystem
1164	  of the Wolfson Microelectronics WM8350.
1165
1166	  This driver can also be built as a module. If so, the module
1167	  will be called "rtc-wm8350".
1168
1169config RTC_DRV_SC27XX
1170	tristate "Spreadtrum SC27xx RTC"
1171	depends on MFD_SC27XX_PMIC || COMPILE_TEST
1172	help
1173	  If you say Y here you will get support for the RTC subsystem
1174	  of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs
1175	  includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.
1176
1177	  This driver can also be built as a module. If so, the module
1178	  will be called rtc-sc27xx.
1179
1180config RTC_DRV_SPEAR
1181	tristate "SPEAR ST RTC"
1182	depends on PLAT_SPEAR || COMPILE_TEST
1183	default y
1184	help
1185	 If you say Y here you will get support for the RTC found on
1186	 spear
1187
1188config RTC_DRV_PCF50633
1189	depends on MFD_PCF50633
1190	tristate "NXP PCF50633 RTC"
1191	help
1192	  If you say yes here you get support for the RTC subsystem of the
1193	  NXP PCF50633 used in embedded systems.
1194
1195config RTC_DRV_AB3100
1196	tristate "ST-Ericsson AB3100 RTC"
1197	depends on AB3100_CORE
1198	default y if AB3100_CORE
1199	help
1200	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1201	  support. This chip contains a battery- and capacitor-backed RTC.
1202
1203config RTC_DRV_AB8500
1204	tristate "ST-Ericsson AB8500 RTC"
1205	depends on AB8500_CORE
1206	select RTC_INTF_DEV
1207	select RTC_INTF_DEV_UIE_EMUL
1208	help
1209	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1210	  support. This chip contains a battery- and capacitor-backed RTC.
1211
1212config RTC_DRV_NUC900
1213	tristate "NUC910/NUC920 RTC driver"
1214	depends on ARCH_W90X900 || COMPILE_TEST
1215	help
1216	  If you say yes here you get support for the RTC subsystem of the
1217	  NUC910/NUC920 used in embedded systems.
1218
1219config RTC_DRV_OPAL
1220	tristate "IBM OPAL RTC driver"
1221	depends on PPC_POWERNV
1222	default y
1223	help
1224	  If you say yes here you get support for the PowerNV platform RTC
1225	  driver based on OPAL interfaces.
1226
1227	  This driver can also be built as a module. If so, the module
1228	  will be called rtc-opal.
1229
1230config RTC_DRV_ZYNQMP
1231	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1232	depends on OF
1233	help
1234	  If you say yes here you get support for the RTC controller found on
1235	  Xilinx Zynq Ultrascale+ MPSoC.
1236
1237config RTC_DRV_CROS_EC
1238	tristate "Chrome OS EC RTC driver"
1239	depends on MFD_CROS_EC
1240	help
1241	  If you say yes here you will get support for the
1242	  Chrome OS Embedded Controller's RTC.
1243
1244	  This driver can also be built as a module. If so, the module
1245	  will be called rtc-cros-ec.
1246
1247comment "on-CPU RTC drivers"
1248
1249config RTC_DRV_ASM9260
1250	tristate "Alphascale asm9260 RTC"
1251	depends on MACH_ASM9260 || COMPILE_TEST
1252	help
1253	  If you say yes here you get support for the RTC on the
1254	  Alphascale asm9260 SoC.
1255
1256	  This driver can also be built as a module. If so, the module
1257	  will be called rtc-asm9260.
1258
1259config RTC_DRV_DAVINCI
1260	tristate "TI DaVinci RTC"
1261	depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1262	help
1263	  If you say yes here you get support for the RTC on the
1264	  DaVinci platforms (DM365).
1265
1266	  This driver can also be built as a module. If so, the module
1267	  will be called rtc-davinci.
1268
1269config RTC_DRV_DIGICOLOR
1270	tristate "Conexant Digicolor RTC"
1271	depends on ARCH_DIGICOLOR || COMPILE_TEST
1272	help
1273	  If you say yes here you get support for the RTC on Conexant
1274	  Digicolor platforms. This currently includes the CX92755 SoC.
1275
1276	  This driver can also be built as a module. If so, the module
1277	  will be called rtc-digicolor.
1278
1279config RTC_DRV_IMXDI
1280	tristate "Freescale IMX DryIce Real Time Clock"
1281	depends on ARCH_MXC
1282	help
1283	   Support for Freescale IMX DryIce RTC
1284
1285	   This driver can also be built as a module, if so, the module
1286	   will be called "rtc-imxdi".
1287
1288config RTC_DRV_OMAP
1289	tristate "TI OMAP Real Time Clock"
1290	depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1291	depends on OF
1292	depends on PINCTRL
1293	select GENERIC_PINCONF
1294	help
1295	  Say "yes" here to support the on chip real time clock
1296	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1297
1298	  This driver can also be built as a module, if so, module
1299	  will be called rtc-omap.
1300
1301config HAVE_S3C_RTC
1302	bool
1303	help
1304	  This will include RTC support for Samsung SoCs. If
1305	  you want to include RTC support for any machine, kindly
1306	  select this in the respective mach-XXXX/Kconfig file.
1307
1308config RTC_DRV_S3C
1309	tristate "Samsung S3C series SoC RTC"
1310	depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1311	help
1312	  RTC (Realtime Clock) driver for the clock inbuilt into the
1313	  Samsung S3C24XX series of SoCs. This can provide periodic
1314	  interrupt rates from 1Hz to 64Hz for user programs, and
1315	  wakeup from Alarm.
1316
1317	  The driver currently supports the common features on all the
1318	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1319	  and S3C2442.
1320
1321	  This driver can also be build as a module. If so, the module
1322	  will be called rtc-s3c.
1323
1324config RTC_DRV_EP93XX
1325	tristate "Cirrus Logic EP93XX"
1326	depends on ARCH_EP93XX || COMPILE_TEST
1327	help
1328	  If you say yes here you get support for the
1329	  RTC embedded in the Cirrus Logic EP93XX processors.
1330
1331	  This driver can also be built as a module. If so, the module
1332	  will be called rtc-ep93xx.
1333
1334config RTC_DRV_SA1100
1335	tristate "SA11x0/PXA2xx/PXA910"
1336	depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1337	help
1338	  If you say Y here you will get access to the real time clock
1339	  built into your SA11x0 or PXA2xx CPU.
1340
1341	  To compile this driver as a module, choose M here: the
1342	  module will be called rtc-sa1100.
1343
1344config RTC_DRV_SH
1345	tristate "SuperH On-Chip RTC"
1346	depends on SUPERH || ARCH_RENESAS
1347	help
1348	  Say Y here to enable support for the on-chip RTC found in
1349	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1350
1351	  To compile this driver as a module, choose M here: the
1352	  module will be called rtc-sh.
1353
1354config RTC_DRV_VR41XX
1355	tristate "NEC VR41XX"
1356	depends on CPU_VR41XX || COMPILE_TEST
1357	help
1358	  If you say Y here you will get access to the real time clock
1359	  built into your NEC VR41XX CPU.
1360
1361	  To compile this driver as a module, choose M here: the
1362	  module will be called rtc-vr41xx.
1363
1364config RTC_DRV_PL030
1365	tristate "ARM AMBA PL030 RTC"
1366	depends on ARM_AMBA
1367	help
1368	  If you say Y here you will get access to ARM AMBA
1369	  PrimeCell PL030 RTC found on certain ARM SOCs.
1370
1371	  To compile this driver as a module, choose M here: the
1372	  module will be called rtc-pl030.
1373
1374config RTC_DRV_PL031
1375	tristate "ARM AMBA PL031 RTC"
1376	depends on ARM_AMBA
1377	help
1378	  If you say Y here you will get access to ARM AMBA
1379	  PrimeCell PL031 RTC found on certain ARM SOCs.
1380
1381	  To compile this driver as a module, choose M here: the
1382	  module will be called rtc-pl031.
1383
1384config RTC_DRV_AT91RM9200
1385	tristate "AT91RM9200 or some AT91SAM9 RTC"
1386	depends on ARCH_AT91 || COMPILE_TEST
1387	help
1388	  Driver for the internal RTC (Realtime Clock) module found on
1389	  Atmel AT91RM9200's and some  AT91SAM9 chips. On AT91SAM9 chips
1390	  this is powered by the backup power supply.
1391
1392config RTC_DRV_AT91SAM9
1393	tristate "AT91SAM9 RTT as RTC"
1394	depends on ARCH_AT91 || COMPILE_TEST
1395	depends on HAS_IOMEM
1396	select MFD_SYSCON
1397	help
1398	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1399	  can be used as an RTC thanks to the backup power supply (e.g. a
1400	  small coin cell battery) which keeps this block and the GPBR
1401	  (General Purpose Backup Registers) block powered when the device
1402	  is shutdown.
1403	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1404	  probably want to use the real RTC block instead of the "RTT as an
1405	  RTC" driver.
1406
1407config RTC_DRV_AU1XXX
1408	tristate "Au1xxx Counter0 RTC support"
1409	depends on MIPS_ALCHEMY
1410	help
1411	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1412	  counter) to be used as a RTC.
1413
1414	  This driver can also be built as a module. If so, the module
1415	  will be called rtc-au1xxx.
1416
1417config RTC_DRV_RS5C313
1418	tristate "Ricoh RS5C313"
1419	depends on SH_LANDISK
1420	help
1421	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1422
1423config RTC_DRV_GENERIC
1424	tristate "Generic RTC support"
1425	# Please consider writing a new RTC driver instead of using the generic
1426	# RTC abstraction
1427	depends on PARISC || M68K || PPC || SUPERH32 || COMPILE_TEST
1428	help
1429	  Say Y or M here to enable RTC support on systems using the generic
1430	  RTC abstraction. If you do not know what you are doing, you should
1431	  just say Y.
1432
1433config RTC_DRV_PXA
1434	tristate "PXA27x/PXA3xx"
1435	depends on ARCH_PXA
1436	select RTC_DRV_SA1100
1437	help
1438         If you say Y here you will get access to the real time clock
1439         built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1440         consisting of an SA1100 compatible RTC and the extended PXA RTC.
1441
1442	 This RTC driver uses PXA RTC registers available since pxa27x
1443	 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1444
1445config RTC_DRV_VT8500
1446	tristate "VIA/WonderMedia 85xx SoC RTC"
1447	depends on ARCH_VT8500 || COMPILE_TEST
1448	help
1449	  If you say Y here you will get access to the real time clock
1450	  built into your VIA VT8500 SoC or its relatives.
1451
1452
1453config RTC_DRV_SUN4V
1454	bool "SUN4V Hypervisor RTC"
1455	depends on SPARC64
1456	help
1457	  If you say Y here you will get support for the Hypervisor
1458	  based RTC on SUN4V systems.
1459
1460config RTC_DRV_SUN6I
1461	bool "Allwinner A31 RTC"
1462	default MACH_SUN6I || MACH_SUN8I
1463	depends on COMMON_CLK
1464	depends on ARCH_SUNXI || COMPILE_TEST
1465	help
1466	  If you say Y here you will get support for the RTC found in
1467	  some Allwinner SoCs like the A31 or the A64.
1468
1469config RTC_DRV_SUNXI
1470	tristate "Allwinner sun4i/sun7i RTC"
1471	depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1472	help
1473	  If you say Y here you will get support for the RTC found on
1474	  Allwinner A10/A20.
1475
1476config RTC_DRV_STARFIRE
1477	bool "Starfire RTC"
1478	depends on SPARC64
1479	help
1480	  If you say Y here you will get support for the RTC found on
1481	  Starfire systems.
1482
1483config RTC_DRV_TX4939
1484	tristate "TX4939 SoC"
1485	depends on SOC_TX4939 || COMPILE_TEST
1486	help
1487	  Driver for the internal RTC (Realtime Clock) module found on
1488	  Toshiba TX4939 SoC.
1489
1490config RTC_DRV_MV
1491	tristate "Marvell SoC RTC"
1492	depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1493	help
1494	  If you say yes here you will get support for the in-chip RTC
1495	  that can be found in some of Marvell's SoC devices, such as
1496	  the Kirkwood 88F6281 and 88F6192.
1497
1498	  This driver can also be built as a module. If so, the module
1499	  will be called rtc-mv.
1500
1501config RTC_DRV_ARMADA38X
1502	tristate "Armada 38x Marvell SoC RTC"
1503	depends on ARCH_MVEBU || COMPILE_TEST
1504	help
1505	  If you say yes here you will get support for the in-chip RTC
1506	  that can be found in the Armada 38x Marvell's SoC device
1507
1508	  This driver can also be built as a module. If so, the module
1509	  will be called armada38x-rtc.
1510
1511config RTC_DRV_FTRTC010
1512	tristate "Faraday Technology FTRTC010 RTC"
1513	depends on HAS_IOMEM
1514	default ARCH_GEMINI
1515	help
1516	  If you say Y here you will get support for the
1517	  Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
1518
1519	  This driver can also be built as a module. If so, the module
1520	  will be called rtc-ftrtc010.
1521
1522config RTC_DRV_PS3
1523	tristate "PS3 RTC"
1524	depends on PPC_PS3
1525	help
1526	  If you say yes here you will get support for the RTC on PS3.
1527
1528	  This driver can also be built as a module. If so, the module
1529	  will be called rtc-ps3.
1530
1531config RTC_DRV_COH901331
1532	tristate "ST-Ericsson COH 901 331 RTC"
1533	depends on ARCH_U300 || COMPILE_TEST
1534	help
1535	  If you say Y here you will get access to ST-Ericsson
1536	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
1537	  Platforms.
1538
1539	  This driver can also be built as a module. If so, the module
1540	  will be called "rtc-coh901331".
1541
1542
1543config RTC_DRV_STMP
1544	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1545	depends on ARCH_MXS || COMPILE_TEST
1546	select STMP_DEVICE
1547	help
1548	  If you say yes here you will get support for the onboard
1549	  STMP3xxx/i.MX23/i.MX28 RTC.
1550
1551	  This driver can also be built as a module. If so, the module
1552	  will be called rtc-stmp3xxx.
1553
1554config RTC_DRV_PCAP
1555	tristate "PCAP RTC"
1556	depends on EZX_PCAP
1557	help
1558	  If you say Y here you will get support for the RTC found on
1559	  the PCAP2 ASIC used on some Motorola phones.
1560
1561config RTC_DRV_MC13XXX
1562	depends on MFD_MC13XXX
1563	tristate "Freescale MC13xxx RTC"
1564	help
1565	  This enables support for the RTCs found on Freescale's PMICs
1566	  MC13783 and MC13892.
1567
1568config RTC_DRV_MPC5121
1569	tristate "Freescale MPC5121 built-in RTC"
1570	depends on PPC_MPC512x || PPC_MPC52xx
1571	help
1572	  If you say yes here you will get support for the
1573	  built-in RTC on MPC5121 or on MPC5200.
1574
1575	  This driver can also be built as a module. If so, the module
1576	  will be called rtc-mpc5121.
1577
1578config RTC_DRV_JZ4740
1579	tristate "Ingenic JZ4740 SoC"
1580	depends on MIPS || COMPILE_TEST
1581	help
1582	  If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1583	  controllers.
1584
1585	  This driver can also be built as a module. If so, the module
1586	  will be called rtc-jz4740.
1587
1588config RTC_DRV_LPC24XX
1589	tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1590	depends on ARCH_LPC18XX || COMPILE_TEST
1591	depends on OF && HAS_IOMEM
1592	help
1593	  This enables support for the NXP RTC found which can be found on
1594	  NXP LPC178x/18xx/408x/43xx devices.
1595
1596	  If you have one of the devices above enable this driver to use
1597	  the hardware RTC. This driver can also be built as a module. If
1598	  so, the module will be called rtc-lpc24xx.
1599
1600config RTC_DRV_LPC32XX
1601	depends on ARCH_LPC32XX || COMPILE_TEST
1602	tristate "NXP LPC32XX RTC"
1603	help
1604	  This enables support for the NXP RTC in the LPC32XX
1605
1606	  This driver can also be built as a module. If so, the module
1607	  will be called rtc-lpc32xx.
1608
1609config RTC_DRV_PM8XXX
1610	tristate "Qualcomm PMIC8XXX RTC"
1611	depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1612	help
1613	  If you say yes here you get support for the
1614	  Qualcomm PMIC8XXX RTC.
1615
1616	  To compile this driver as a module, choose M here: the
1617	  module will be called rtc-pm8xxx.
1618
1619config RTC_DRV_TEGRA
1620	tristate "NVIDIA Tegra Internal RTC driver"
1621	depends on ARCH_TEGRA || COMPILE_TEST
1622	help
1623	  If you say yes here you get support for the
1624	  Tegra 200 series internal RTC module.
1625
1626	  This drive can also be built as a module. If so, the module
1627	  will be called rtc-tegra.
1628
1629config RTC_DRV_PUV3
1630	tristate "PKUnity v3 RTC support"
1631	depends on ARCH_PUV3
1632	help
1633	  This enables support for the RTC in the PKUnity-v3 SoCs.
1634
1635	  This drive can also be built as a module. If so, the module
1636	  will be called rtc-puv3.
1637
1638config RTC_DRV_LOONGSON1
1639	tristate "loongson1 RTC support"
1640	depends on MACH_LOONGSON32
1641	help
1642	  This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1643	  counter) to be used as a RTC.
1644
1645	  This driver can also be built as a module. If so, the module
1646	  will be called rtc-ls1x.
1647
1648config RTC_DRV_MXC
1649	tristate "Freescale MXC Real Time Clock"
1650	depends on ARCH_MXC
1651	help
1652	   If you say yes here you get support for the Freescale MXC
1653	   RTC module.
1654
1655	   This driver can also be built as a module, if so, the module
1656	   will be called "rtc-mxc".
1657
1658config RTC_DRV_MXC_V2
1659	tristate "Freescale MXC Real Time Clock for i.MX53"
1660	depends on ARCH_MXC
1661	help
1662	   If you say yes here you get support for the Freescale MXC
1663	   SRTC module in i.MX53 processor.
1664
1665	   This driver can also be built as a module, if so, the module
1666	   will be called "rtc-mxc_v2".
1667
1668config RTC_DRV_SNVS
1669	tristate "Freescale SNVS RTC support"
1670	select REGMAP_MMIO
1671	depends on HAS_IOMEM
1672	depends on OF
1673	help
1674	   If you say yes here you get support for the Freescale SNVS
1675	   Low Power (LP) RTC module.
1676
1677	   This driver can also be built as a module, if so, the module
1678	   will be called "rtc-snvs".
1679
1680config RTC_DRV_IMX_SC
1681	depends on IMX_SCU
1682	tristate "NXP i.MX System Controller RTC support"
1683	help
1684	   If you say yes here you get support for the NXP i.MX System
1685	   Controller RTC module.
1686
1687config RTC_DRV_SIRFSOC
1688	tristate "SiRFSOC RTC"
1689	depends on ARCH_SIRF
1690	help
1691	  Say "yes" here to support the real time clock on SiRF SOC chips.
1692	  This driver can also be built as a module called rtc-sirfsoc.
1693
1694config RTC_DRV_ST_LPC
1695	tristate "STMicroelectronics LPC RTC"
1696	depends on ARCH_STI
1697	depends on OF
1698	help
1699	  Say Y here to include STMicroelectronics Low Power Controller
1700	  (LPC) based RTC support.
1701
1702	  To compile this driver as a module, choose M here: the
1703	  module will be called rtc-st-lpc.
1704
1705config RTC_DRV_MOXART
1706	tristate "MOXA ART RTC"
1707	depends on ARCH_MOXART || COMPILE_TEST
1708	help
1709	   If you say yes here you get support for the MOXA ART
1710	   RTC module.
1711
1712	   This driver can also be built as a module. If so, the module
1713	   will be called rtc-moxart
1714
1715config RTC_DRV_MT6397
1716	tristate "MediaTek PMIC based RTC"
1717	depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1718	help
1719	  This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
1720	  MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1721	  MediaTek(R) RTC driver.
1722
1723	  If you want to use MediaTek(R) RTC interface, select Y or M here.
1724
1725config RTC_DRV_MT7622
1726	tristate "MediaTek SoC based RTC"
1727	depends on ARCH_MEDIATEK || COMPILE_TEST
1728	help
1729	  This enables support for the real time clock built in the MediaTek
1730	  SoCs.
1731
1732	  This drive can also be built as a module. If so, the module
1733	  will be called rtc-mt7622.
1734
1735config RTC_DRV_XGENE
1736	tristate "APM X-Gene RTC"
1737	depends on HAS_IOMEM
1738	depends on ARCH_XGENE || COMPILE_TEST
1739	help
1740	  If you say yes here you get support for the APM X-Gene SoC real time
1741	  clock.
1742
1743	  This driver can also be built as a module, if so, the module
1744	  will be called "rtc-xgene".
1745
1746config RTC_DRV_PIC32
1747	tristate "Microchip PIC32 RTC"
1748	depends on MACH_PIC32
1749	default y
1750	help
1751	   If you say yes here you get support for the PIC32 RTC module.
1752
1753	   This driver can also be built as a module. If so, the module
1754	   will be called rtc-pic32
1755
1756config RTC_DRV_R7301
1757	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1758	select REGMAP_MMIO
1759	depends on OF && HAS_IOMEM
1760	help
1761	   If you say yes here you get support for the EPSON TOYOCOM
1762	   RTC-7301SF/DG chips.
1763
1764	   This driver can also be built as a module. If so, the module
1765	   will be called rtc-r7301.
1766
1767config RTC_DRV_STM32
1768	tristate "STM32 RTC"
1769	select REGMAP_MMIO
1770	depends on ARCH_STM32 || COMPILE_TEST
1771	help
1772	   If you say yes here you get support for the STM32 On-Chip
1773	   Real Time Clock.
1774
1775	   This driver can also be built as a module, if so, the module
1776	   will be called "rtc-stm32".
1777
1778config RTC_DRV_CPCAP
1779	depends on MFD_CPCAP
1780	tristate "Motorola CPCAP RTC"
1781	help
1782	   Say y here for CPCAP rtc found on some Motorola phones
1783	   and tablets such as Droid 4.
1784
1785config RTC_DRV_RTD119X
1786	bool "Realtek RTD129x RTC"
1787	depends on ARCH_REALTEK || COMPILE_TEST
1788	default ARCH_REALTEK
1789	help
1790	  If you say yes here, you get support for the RTD1295 SoC
1791	  Real Time Clock.
1792
1793comment "HID Sensor RTC drivers"
1794
1795config RTC_DRV_HID_SENSOR_TIME
1796	tristate "HID Sensor Time"
1797	depends on USB_HID
1798	select IIO
1799	select HID_SENSOR_HUB
1800	select HID_SENSOR_IIO_COMMON
1801	help
1802	  Say yes here to build support for the HID Sensors of type Time.
1803	  This drivers makes such sensors available as RTCs.
1804
1805	  If this driver is compiled as a module, it will be named
1806	  rtc-hid-sensor-time.
1807
1808config RTC_DRV_GOLDFISH
1809	tristate "Goldfish Real Time Clock"
1810	depends on MIPS && (GOLDFISH || COMPILE_TEST)
1811	help
1812	  Say yes to enable RTC driver for the Goldfish based virtual platform.
1813
1814	  Goldfish is a code name for the virtual platform developed by Google
1815	  for Android emulation.
1816
1817endif # RTC_CLASS
1818