xref: /openbmc/linux/drivers/rtc/Kconfig (revision 65417d9f)
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	help
191	  If you say yes here you get support for Abracon AB080X and AB180X
192	  families of ultra-low-power  battery- and capacitor-backed real-time
193	  clock chips.
194
195	  This driver can also be built as a module. If so, the module
196	  will be called rtc-abx80x.
197
198config RTC_DRV_AC100
199	tristate "X-Powers AC100"
200	depends on MFD_AC100
201	help
202	  If you say yes here you get support for the real-time clock found
203	  in X-Powers AC100 family peripheral ICs.
204
205	  This driver can also be built as a module. If so, the module
206	  will be called rtc-ac100.
207
208config RTC_DRV_BRCMSTB
209	tristate "Broadcom STB wake-timer"
210	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
211	default ARCH_BRCMSTB || BMIPS_GENERIC
212	help
213	  If you say yes here you get support for the wake-timer found on
214	  Broadcom STB SoCs (BCM7xxx).
215
216	  This driver can also be built as a module. If so, the module will
217	  be called rtc-brcmstb-waketimer.
218
219config RTC_DRV_AS3722
220	tristate "ams AS3722 RTC driver"
221	depends on MFD_AS3722
222	help
223	  If you say yes here you get support for the RTC of ams AS3722 PMIC
224	  chips.
225
226	  This driver can also be built as a module. If so, the module
227	  will be called rtc-as3722.
228
229config RTC_DRV_DS1307
230	tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
231	help
232	  If you say yes here you get support for various compatible RTC
233	  chips (often with battery backup) connected with I2C. This driver
234	  should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341,
235	  ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
236	  In some cases the RTC must already have been initialized (by
237	  manufacturing or a bootloader).
238
239	  The first seven registers on these chips hold an RTC, and other
240	  registers may add features such as NVRAM, a trickle charger for
241	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
242	  sysfs, but other chip features may not be available.
243
244	  This driver can also be built as a module. If so, the module
245	  will be called rtc-ds1307.
246
247config RTC_DRV_DS1307_HWMON
248	bool "HWMON support for rtc-ds1307"
249	depends on RTC_DRV_DS1307 && HWMON
250	depends on !(RTC_DRV_DS1307=y && HWMON=m)
251	default y
252	help
253	  Say Y here if you want to expose temperature sensor data on
254	  rtc-ds1307 (only DS3231)
255
256config RTC_DRV_DS1307_CENTURY
257	bool "Century bit support for rtc-ds1307"
258	depends on RTC_DRV_DS1307
259	default n
260	help
261	  The DS1307 driver suffered from a bug where it was enabling the
262	  century bit inconditionnally but never used it when reading the time.
263	  It made the driver unable to support dates beyond 2099.
264	  Setting this option will add proper support for the century bit but if
265	  the time was previously set using a kernel predating this option,
266	  reading the date will return a date in the next century.
267	  To solve that, you could boot a kernel without this option set, set
268	  the RTC date and then boot a kernel with this option set.
269
270config RTC_DRV_DS1374
271	tristate "Dallas/Maxim DS1374"
272	help
273	  If you say yes here you get support for Dallas Semiconductor
274	  DS1374 real-time clock chips. If an interrupt is associated
275	  with the device, the alarm functionality is supported.
276
277	  This driver can also be built as a module. If so, the module
278	  will be called rtc-ds1374.
279
280config RTC_DRV_DS1374_WDT
281	bool "Dallas/Maxim DS1374 watchdog timer"
282	depends on RTC_DRV_DS1374
283	help
284	  If you say Y here you will get support for the
285	  watchdog timer in the Dallas Semiconductor DS1374
286	  real-time clock chips.
287
288config RTC_DRV_DS1672
289	tristate "Dallas/Maxim DS1672"
290	help
291	  If you say yes here you get support for the
292	  Dallas/Maxim DS1672 timekeeping chip.
293
294	  This driver can also be built as a module. If so, the module
295	  will be called rtc-ds1672.
296
297config RTC_DRV_HYM8563
298	tristate "Haoyu Microelectronics HYM8563"
299	depends on OF
300	help
301	  Say Y to enable support for the HYM8563 I2C RTC chip. Apart
302	  from the usual rtc functions it provides a clock output of
303	  up to 32kHz.
304
305	  This driver can also be built as a module. If so, the module
306	  will be called rtc-hym8563.
307
308config RTC_DRV_LP8788
309	tristate "TI LP8788 RTC driver"
310	depends on MFD_LP8788
311	help
312	  Say Y to enable support for the LP8788 RTC/ALARM driver.
313
314config RTC_DRV_MAX6900
315	tristate "Maxim MAX6900"
316	help
317	  If you say yes here you will get support for the
318	  Maxim MAX6900 I2C RTC chip.
319
320	  This driver can also be built as a module. If so, the module
321	  will be called rtc-max6900.
322
323config RTC_DRV_MAX8907
324	tristate "Maxim MAX8907"
325	depends on MFD_MAX8907 || COMPILE_TEST
326	help
327	  If you say yes here you will get support for the
328	  RTC of Maxim MAX8907 PMIC.
329
330	  This driver can also be built as a module. If so, the module
331	  will be called rtc-max8907.
332
333config RTC_DRV_MAX8925
334	tristate "Maxim MAX8925"
335	depends on MFD_MAX8925
336	help
337	  If you say yes here you will get support for the
338	  RTC of Maxim MAX8925 PMIC.
339
340	  This driver can also be built as a module. If so, the module
341	  will be called rtc-max8925.
342
343config RTC_DRV_MAX8998
344	tristate "Maxim MAX8998"
345	depends on MFD_MAX8998
346	help
347	  If you say yes here you will get support for the
348	  RTC of Maxim MAX8998 PMIC.
349
350	  This driver can also be built as a module. If so, the module
351	  will be called rtc-max8998.
352
353config RTC_DRV_MAX8997
354	tristate "Maxim MAX8997"
355	depends on MFD_MAX8997
356	help
357	  If you say yes here you will get support for the
358	  RTC of Maxim MAX8997 PMIC.
359
360	  This driver can also be built as a module. If so, the module
361	  will be called rtc-max8997.
362
363config RTC_DRV_MAX77686
364	tristate "Maxim MAX77686"
365	depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
366	help
367	  If you say yes here you will get support for the
368	  RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
369
370	  This driver can also be built as a module. If so, the module
371	  will be called rtc-max77686.
372
373config RTC_DRV_RK808
374	tristate "Rockchip RK805/RK808/RK818 RTC"
375	depends on MFD_RK808
376	help
377	  If you say yes here you will get support for the
378	  RTC of RK805, RK808 and RK818 PMIC.
379
380	  This driver can also be built as a module. If so, the module
381	  will be called rk808-rtc.
382
383config RTC_DRV_RS5C372
384	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
385	help
386	  If you say yes here you get support for the
387	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
388
389	  This driver can also be built as a module. If so, the module
390	  will be called rtc-rs5c372.
391
392config RTC_DRV_ISL1208
393	tristate "Intersil ISL1208"
394	help
395	  If you say yes here you get support for the
396	  Intersil ISL1208 RTC chip.
397
398	  This driver can also be built as a module. If so, the module
399	  will be called rtc-isl1208.
400
401config RTC_DRV_ISL12022
402	tristate "Intersil ISL12022"
403	help
404	  If you say yes here you get support for the
405	  Intersil ISL12022 RTC chip.
406
407	  This driver can also be built as a module. If so, the module
408	  will be called rtc-isl12022.
409
410config RTC_DRV_X1205
411	tristate "Xicor/Intersil X1205"
412	help
413	  If you say yes here you get support for the
414	  Xicor/Intersil X1205 RTC chip.
415
416	  This driver can also be built as a module. If so, the module
417	  will be called rtc-x1205.
418
419config RTC_DRV_PCF8523
420	tristate "NXP PCF8523"
421	help
422	  If you say yes here you get support for the NXP PCF8523 RTC
423	  chips.
424
425	  This driver can also be built as a module. If so, the module
426	  will be called rtc-pcf8523.
427
428config RTC_DRV_PCF85063
429	tristate "NXP PCF85063"
430	help
431	  If you say yes here you get support for the PCF85063 RTC chip
432
433	  This driver can also be built as a module. If so, the module
434	  will be called rtc-pcf85063.
435
436config RTC_DRV_PCF85363
437	tristate "NXP PCF85363"
438	depends on I2C
439	select REGMAP_I2C
440	help
441	  If you say yes here you get support for the PCF85363 RTC chip.
442
443	  This driver can also be built as a module. If so, the module
444	  will be called rtc-pcf85363.
445
446	  The nvmem interface will be named pcf85363-#, where # is the
447	  zero-based instance number.
448
449config RTC_DRV_PCF8563
450	tristate "Philips PCF8563/Epson RTC8564"
451	help
452	  If you say yes here you get support for the
453	  Philips PCF8563 RTC chip. The Epson RTC8564
454	  should work as well.
455
456	  This driver can also be built as a module. If so, the module
457	  will be called rtc-pcf8563.
458
459config RTC_DRV_PCF8583
460	tristate "Philips PCF8583"
461	help
462	  If you say yes here you get support for the Philips PCF8583
463	  RTC chip found on Acorn RiscPCs. This driver supports the
464	  platform specific method of retrieving the current year from
465	  the RTC's SRAM. It will work on other platforms with the same
466	  chip, but the year will probably have to be tweaked.
467
468	  This driver can also be built as a module. If so, the module
469	  will be called rtc-pcf8583.
470
471config RTC_DRV_M41T80
472	tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
473	help
474	  If you say Y here you will get support for the ST M41T60
475	  and M41T80 RTC chips series. Currently, the following chips are
476	  supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
477	  M41ST85, M41ST87, and MicroCrystal RV4162.
478
479	  This driver can also be built as a module. If so, the module
480	  will be called rtc-m41t80.
481
482config RTC_DRV_M41T80_WDT
483	bool "ST M41T65/M41T80 series RTC watchdog timer"
484	depends on RTC_DRV_M41T80
485	help
486	  If you say Y here you will get support for the
487	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
488
489config RTC_DRV_BQ32K
490	tristate "TI BQ32000"
491	help
492	  If you say Y here you will get support for the TI
493	  BQ32000 I2C RTC chip.
494
495	  This driver can also be built as a module. If so, the module
496	  will be called rtc-bq32k.
497
498config RTC_DRV_DM355EVM
499	tristate "TI DaVinci DM355 EVM RTC"
500	depends on MFD_DM355EVM_MSP
501	help
502	  Supports the RTC firmware in the MSP430 on the DM355 EVM.
503
504config RTC_DRV_TWL92330
505	bool "TI TWL92330/Menelaus"
506	depends on MENELAUS
507	help
508	  If you say yes here you get support for the RTC on the
509	  TWL92330 "Menelaus" power management chip, used with OMAP2
510	  platforms. The support is integrated with the rest of
511	  the Menelaus driver; it's not separate module.
512
513config RTC_DRV_TWL4030
514	tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
515	depends on TWL4030_CORE
516	depends on OF
517	help
518	  If you say yes here you get support for the RTC on the
519	  TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
520
521	  This driver can also be built as a module. If so, the module
522	  will be called rtc-twl.
523
524config RTC_DRV_PALMAS
525	tristate "TI Palmas RTC driver"
526	depends on MFD_PALMAS
527	help
528	  If you say yes here you get support for the RTC of TI PALMA series PMIC
529	  chips.
530
531	  This driver can also be built as a module. If so, the module
532	  will be called rtc-palma.
533
534config RTC_DRV_TPS6586X
535	tristate "TI TPS6586X RTC driver"
536	depends on MFD_TPS6586X
537	help
538	  TI Power Management IC TPS6586X supports RTC functionality
539	  along with alarm. This driver supports the RTC driver for
540	  the TPS6586X RTC module.
541
542config RTC_DRV_TPS65910
543	tristate "TI TPS65910 RTC driver"
544	depends on RTC_CLASS && MFD_TPS65910
545	help
546	  If you say yes here you get support for the RTC on the
547	  TPS65910 chips.
548
549	  This driver can also be built as a module. If so, the module
550	  will be called rtc-tps65910.
551
552config RTC_DRV_TPS80031
553	tristate "TI TPS80031/TPS80032 RTC driver"
554	depends on MFD_TPS80031
555	help
556	  TI Power Management IC TPS80031 supports RTC functionality
557	  along with alarm. This driver supports the RTC driver for
558	  the TPS80031 RTC module.
559
560config RTC_DRV_RC5T583
561	tristate "RICOH 5T583 RTC driver"
562	depends on MFD_RC5T583
563	help
564	  If you say yes here you get support for the RTC on the
565	  RICOH 5T583 chips.
566
567	  This driver can also be built as a module. If so, the module
568	  will be called rtc-rc5t583.
569
570config RTC_DRV_S35390A
571	tristate "Seiko Instruments S-35390A"
572	select BITREVERSE
573	help
574	  If you say yes here you will get support for the Seiko
575	  Instruments S-35390A.
576
577	  This driver can also be built as a module. If so the module
578	  will be called rtc-s35390a.
579
580config RTC_DRV_FM3130
581	tristate "Ramtron FM3130"
582	help
583	  If you say Y here you will get support for the
584	  Ramtron FM3130 RTC chips.
585	  Ramtron FM3130 is a chip with two separate devices inside,
586	  RTC clock and FRAM. This driver provides only RTC functionality.
587
588	  This driver can also be built as a module. If so the module
589	  will be called rtc-fm3130.
590
591config RTC_DRV_RX8010
592	tristate "Epson RX8010SJ"
593	depends on I2C
594	help
595	  If you say yes here you get support for the Epson RX8010SJ RTC
596	  chip.
597
598	  This driver can also be built as a module. If so, the module
599	  will be called rtc-rx8010.
600
601config RTC_DRV_RX8581
602	tristate "Epson RX-8581"
603	help
604	  If you say yes here you will get support for the Epson RX-8581.
605
606	  This driver can also be built as a module. If so the module
607	  will be called rtc-rx8581.
608
609config RTC_DRV_RX8025
610	tristate "Epson RX-8025SA/NB"
611	help
612	  If you say yes here you get support for the Epson
613	  RX-8025SA/NB RTC chips.
614
615	  This driver can also be built as a module. If so, the module
616	  will be called rtc-rx8025.
617
618config RTC_DRV_EM3027
619	tristate "EM Microelectronic EM3027"
620	help
621	  If you say yes here you get support for the EM
622	  Microelectronic EM3027 RTC chips.
623
624	  This driver can also be built as a module. If so, the module
625	  will be called rtc-em3027.
626
627config RTC_DRV_RV8803
628	tristate "Micro Crystal RV8803, Epson RX8900"
629	help
630	  If you say yes here you get support for the Micro Crystal RV8803 and
631	  Epson RX8900 RTC chips.
632
633	  This driver can also be built as a module. If so, the module
634	  will be called rtc-rv8803.
635
636config RTC_DRV_S5M
637	tristate "Samsung S2M/S5M series"
638	depends on MFD_SEC_CORE || COMPILE_TEST
639	select REGMAP_IRQ
640	help
641	  If you say yes here you will get support for the
642	  RTC of Samsung S2MPS14 and S5M PMIC series.
643
644	  This driver can also be built as a module. If so, the module
645	  will be called rtc-s5m.
646
647endif # I2C
648
649comment "SPI RTC drivers"
650
651if SPI_MASTER
652
653config RTC_DRV_M41T93
654	tristate "ST M41T93"
655	help
656	  If you say yes here you will get support for the
657	  ST M41T93 SPI RTC chip.
658
659	  This driver can also be built as a module. If so, the module
660	  will be called rtc-m41t93.
661
662config RTC_DRV_M41T94
663	tristate "ST M41T94"
664	help
665	  If you say yes here you will get support for the
666	  ST M41T94 SPI RTC chip.
667
668	  This driver can also be built as a module. If so, the module
669	  will be called rtc-m41t94.
670
671config RTC_DRV_DS1302
672	tristate "Dallas/Maxim DS1302"
673	depends on SPI
674	help
675	  If you say yes here you get support for the Dallas DS1302 RTC chips.
676
677	  This driver can also be built as a module. If so, the module
678	  will be called rtc-ds1302.
679
680config RTC_DRV_DS1305
681	tristate "Dallas/Maxim DS1305/DS1306"
682	help
683	  Select this driver to get support for the Dallas/Maxim DS1305
684	  and DS1306 real time clock chips. These support a trickle
685	  charger, alarms, and NVRAM in addition to the clock.
686
687	  This driver can also be built as a module. If so, the module
688	  will be called rtc-ds1305.
689
690config RTC_DRV_DS1343
691	select REGMAP_SPI
692	tristate "Dallas/Maxim DS1343/DS1344"
693	help
694	  If you say yes here you get support for the
695	  Dallas/Maxim DS1343 and DS1344 real time clock chips.
696	  Support for trickle charger, alarm is provided.
697
698	  This driver can also be built as a module. If so, the module
699	  will be called rtc-ds1343.
700
701config RTC_DRV_DS1347
702	select REGMAP_SPI
703	tristate "Dallas/Maxim DS1347"
704	help
705	  If you say yes here you get support for the
706	  Dallas/Maxim DS1347 chips.
707
708	  This driver only supports the RTC feature, and not other chip
709	  features such as alarms.
710
711	  This driver can also be built as a module. If so, the module
712	  will be called rtc-ds1347.
713
714config RTC_DRV_DS1390
715	tristate "Dallas/Maxim DS1390/93/94"
716	help
717	  If you say yes here you get support for the
718	  Dallas/Maxim DS1390/93/94 chips.
719
720	  This driver supports the RTC feature and trickle charging but not
721	  other chip features such as alarms.
722
723	  This driver can also be built as a module. If so, the module
724	  will be called rtc-ds1390.
725
726config RTC_DRV_MAX6916
727	tristate "Maxim MAX6916"
728	help
729	  If you say yes here you will get support for the
730	  Maxim MAX6916 SPI RTC chip.
731
732	  This driver only supports the RTC feature, and not other chip
733	  features such as alarms.
734
735	  This driver can also be built as a module. If so, the module
736	  will be called rtc-max6916.
737
738config RTC_DRV_R9701
739	tristate "Epson RTC-9701JE"
740	help
741	  If you say yes here you will get support for the
742	  Epson RTC-9701JE SPI RTC chip.
743
744	  This driver can also be built as a module. If so, the module
745	  will be called rtc-r9701.
746
747config RTC_DRV_RX4581
748	tristate "Epson RX-4581"
749	help
750	  If you say yes here you will get support for the Epson RX-4581.
751
752	  This driver can also be built as a module. If so the module
753	  will be called rtc-rx4581.
754
755config RTC_DRV_RX6110
756	tristate "Epson RX-6110"
757	select REGMAP_SPI
758	help
759	  If you say yes here you will get support for the Epson RX-6610.
760
761	  This driver can also be built as a module. If so the module
762	  will be called rtc-rx6110.
763
764config RTC_DRV_RS5C348
765	tristate "Ricoh RS5C348A/B"
766	help
767	  If you say yes here you get support for the
768	  Ricoh RS5C348A and RS5C348B RTC chips.
769
770	  This driver can also be built as a module. If so, the module
771	  will be called rtc-rs5c348.
772
773config RTC_DRV_MAX6902
774	tristate "Maxim MAX6902"
775	help
776	  If you say yes here you will get support for the
777	  Maxim MAX6902 SPI RTC chip.
778
779	  This driver can also be built as a module. If so, the module
780	  will be called rtc-max6902.
781
782config RTC_DRV_PCF2123
783	tristate "NXP PCF2123"
784	help
785	  If you say yes here you get support for the NXP PCF2123
786	  RTC chip.
787
788	  This driver can also be built as a module. If so, the module
789	  will be called rtc-pcf2123.
790
791config RTC_DRV_MCP795
792	tristate "Microchip MCP795"
793	help
794	  If you say yes here you will get support for the Microchip MCP795.
795
796	  This driver can also be built as a module. If so the module
797	  will be called rtc-mcp795.
798
799endif # SPI_MASTER
800
801#
802# Helper to resolve issues with configs that have SPI enabled but I2C
803# modular.  See SND_SOC_I2C_AND_SPI for more information
804#
805config RTC_I2C_AND_SPI
806	tristate
807	default m if I2C=m
808	default y if I2C=y
809	default y if SPI_MASTER=y
810	select REGMAP_I2C if I2C
811	select REGMAP_SPI if SPI_MASTER
812
813comment "SPI and I2C RTC drivers"
814
815config RTC_DRV_DS3232
816	tristate "Dallas/Maxim DS3232/DS3234"
817	depends on RTC_I2C_AND_SPI
818	help
819	  If you say yes here you get support for Dallas Semiconductor
820	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
821	  with the device, the alarm functionality is supported.
822
823	  This driver can also be built as a module.  If so, the module
824	  will be called rtc-ds3232.
825
826config RTC_DRV_DS3232_HWMON
827	bool "HWMON support for Dallas/Maxim DS3232/DS3234"
828	depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
829	default y
830	help
831	  Say Y here if you want to expose temperature sensor data on
832	  rtc-ds3232
833
834config RTC_DRV_PCF2127
835	tristate "NXP PCF2127"
836	depends on RTC_I2C_AND_SPI
837	help
838	  If you say yes here you get support for the NXP PCF2127/29 RTC
839	  chips.
840
841	  This driver can also be built as a module. If so, the module
842	  will be called rtc-pcf2127.
843
844config RTC_DRV_RV3029C2
845	tristate "Micro Crystal RV3029/3049"
846	depends on RTC_I2C_AND_SPI
847	help
848	  If you say yes here you get support for the Micro Crystal
849	  RV3029 and RV3049 RTC chips.
850
851	  This driver can also be built as a module. If so, the module
852	  will be called rtc-rv3029c2.
853
854config RTC_DRV_RV3029_HWMON
855	bool "HWMON support for RV3029/3049"
856	depends on RTC_DRV_RV3029C2 && HWMON
857	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
858	default y
859	help
860	  Say Y here if you want to expose temperature sensor data on
861	  rtc-rv3029.
862
863comment "Platform RTC drivers"
864
865# this 'CMOS' RTC driver is arch dependent because it requires
866# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
867# global rtc_lock ... it's not yet just another platform_device.
868
869config RTC_DRV_CMOS
870	tristate "PC-style 'CMOS'"
871	depends on X86 || ARM || M32R || PPC || MIPS || SPARC64 || MN10300
872	default y if X86
873	select RTC_MC146818_LIB
874	help
875	  Say "yes" here to get direct support for the real time clock
876	  found in every PC or ACPI-based system, and some other boards.
877	  Specifically the original MC146818, compatibles like those in
878	  PC south bridges, the DS12887 or M48T86, some multifunction
879	  or LPC bus chips, and so on.
880
881	  Your system will need to define the platform device used by
882	  this driver, otherwise it won't be accessible. This means
883	  you can safely enable this driver if you don't know whether
884	  or not your board has this kind of hardware.
885
886	  This driver can also be built as a module. If so, the module
887	  will be called rtc-cmos.
888
889config RTC_DRV_ALPHA
890	bool "Alpha PC-style CMOS"
891	depends on ALPHA
892	select RTC_MC146818_LIB
893	default y
894	help
895	  Direct support for the real-time clock found on every Alpha
896	  system, specifically MC146818 compatibles.  If in doubt, say Y.
897
898config RTC_DRV_VRTC
899	tristate "Virtual RTC for Intel MID platforms"
900	depends on X86_INTEL_MID
901	default y if X86_INTEL_MID
902
903	help
904	Say "yes" here to get direct support for the real time clock
905	found on Moorestown platforms. The VRTC is a emulated RTC that
906	derives its clock source from a real RTC in the PMIC. The MC146818
907	style programming interface is mostly conserved, but any
908	updates are done via IPC calls to the system controller FW.
909
910config RTC_DRV_DS1216
911	tristate "Dallas DS1216"
912	depends on SNI_RM
913	help
914	  If you say yes here you get support for the Dallas DS1216 RTC chips.
915
916config RTC_DRV_DS1286
917	tristate "Dallas DS1286"
918	depends on HAS_IOMEM
919	help
920	  If you say yes here you get support for the Dallas DS1286 RTC chips.
921
922config RTC_DRV_DS1511
923	tristate "Dallas DS1511"
924	depends on HAS_IOMEM
925	help
926	  If you say yes here you get support for the
927	  Dallas DS1511 timekeeping/watchdog chip.
928
929	  This driver can also be built as a module. If so, the module
930	  will be called rtc-ds1511.
931
932config RTC_DRV_DS1553
933	tristate "Maxim/Dallas DS1553"
934	depends on HAS_IOMEM
935	help
936	  If you say yes here you get support for the
937	  Maxim/Dallas DS1553 timekeeping chip.
938
939	  This driver can also be built as a module. If so, the module
940	  will be called rtc-ds1553.
941
942config RTC_DRV_DS1685_FAMILY
943	tristate "Dallas/Maxim DS1685 Family"
944	help
945	  If you say yes here you get support for the Dallas/Maxim DS1685
946	  family of real time chips.  This family includes the DS1685/DS1687,
947	  DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
948	  DS17885/DS17887 chips.
949
950	  This driver can also be built as a module. If so, the module
951	  will be called rtc-ds1685.
952
953choice
954	prompt "Subtype"
955	depends on RTC_DRV_DS1685_FAMILY
956	default RTC_DRV_DS1685
957
958config RTC_DRV_DS1685
959	bool "DS1685/DS1687"
960	help
961	  This enables support for the Dallas/Maxim DS1685/DS1687 real time
962	  clock chip.
963
964	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
965	  systems, as well as EPPC-405-UC modules by electronic system design
966	  GmbH.
967
968config RTC_DRV_DS1689
969	bool "DS1689/DS1693"
970	help
971	  This enables support for the Dallas/Maxim DS1689/DS1693 real time
972	  clock chip.
973
974	  This is an older RTC chip, supplanted by the DS1685/DS1687 above,
975	  which supports a few minor features such as Vcc, Vbat, and Power
976	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
977
978	  It also works for the even older DS1688/DS1691 RTC chips, which are
979	  virtually the same and carry the same model number.  Both chips
980	  have 114 bytes of user NVRAM.
981
982config RTC_DRV_DS17285
983	bool "DS17285/DS17287"
984	help
985	  This enables support for the Dallas/Maxim DS17285/DS17287 real time
986	  clock chip.
987
988	  This chip features 2kb of extended NV-SRAM.  It may possibly be
989	  found in some SGI O2 systems (rare).
990
991config RTC_DRV_DS17485
992	bool "DS17485/DS17487"
993	help
994	  This enables support for the Dallas/Maxim DS17485/DS17487 real time
995	  clock chip.
996
997	  This chip features 4kb of extended NV-SRAM.
998
999config RTC_DRV_DS17885
1000	bool "DS17885/DS17887"
1001	help
1002	  This enables support for the Dallas/Maxim DS17885/DS17887 real time
1003	  clock chip.
1004
1005	  This chip features 8kb of extended NV-SRAM.
1006
1007endchoice
1008
1009config RTC_DS1685_PROC_REGS
1010	bool "Display register values in /proc"
1011	depends on RTC_DRV_DS1685_FAMILY && PROC_FS
1012	help
1013	  Enable this to display a readout of all of the RTC registers in
1014	  /proc/drivers/rtc.  Keep in mind that this can potentially lead
1015	  to lost interrupts, as reading Control Register C will clear
1016	  all pending IRQ flags.
1017
1018	  Unless you are debugging this driver, choose N.
1019
1020config RTC_DS1685_SYSFS_REGS
1021	bool "SysFS access to RTC register bits"
1022	depends on RTC_DRV_DS1685_FAMILY && SYSFS
1023	help
1024	  Enable this to provide access to the RTC control register bits
1025	  in /sys.  Some of the bits are read-write, others are read-only.
1026
1027	  Keep in mind that reading Control C's bits automatically clears
1028	  all pending IRQ flags - this can cause lost interrupts.
1029
1030	  If you know that you need access to these bits, choose Y, Else N.
1031
1032config RTC_DRV_DS1742
1033	tristate "Maxim/Dallas DS1742/1743"
1034	depends on HAS_IOMEM
1035	help
1036	  If you say yes here you get support for the
1037	  Maxim/Dallas DS1742/1743 timekeeping chip.
1038
1039	  This driver can also be built as a module. If so, the module
1040	  will be called rtc-ds1742.
1041
1042config RTC_DRV_DS2404
1043	tristate "Maxim/Dallas DS2404"
1044	help
1045	  If you say yes here you get support for the
1046	  Dallas DS2404 RTC chip.
1047
1048	  This driver can also be built as a module. If so, the module
1049	  will be called rtc-ds2404.
1050
1051config RTC_DRV_DA9052
1052	tristate "Dialog DA9052/DA9053 RTC"
1053	depends on PMIC_DA9052
1054	help
1055	  Say y here to support the RTC driver for Dialog Semiconductor
1056	  DA9052-BC and DA9053-AA/Bx PMICs.
1057
1058config RTC_DRV_DA9055
1059	tristate "Dialog Semiconductor DA9055 RTC"
1060	depends on MFD_DA9055
1061	help
1062	  If you say yes here you will get support for the
1063	  RTC of the Dialog DA9055 PMIC.
1064
1065	  This driver can also be built as a module. If so, the module
1066	  will be called rtc-da9055
1067
1068config RTC_DRV_DA9063
1069	tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1070	depends on MFD_DA9063 || MFD_DA9062
1071	help
1072	  If you say yes here you will get support for the RTC subsystem
1073	  for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1074
1075	  This driver can also be built as a module. If so, the module
1076	  will be called "rtc-da9063".
1077
1078config RTC_DRV_EFI
1079	tristate "EFI RTC"
1080	depends on EFI && !X86
1081	help
1082	  If you say yes here you will get support for the EFI
1083	  Real Time Clock.
1084
1085	  This driver can also be built as a module. If so, the module
1086	  will be called rtc-efi.
1087
1088config RTC_DRV_STK17TA8
1089	tristate "Simtek STK17TA8"
1090	depends on HAS_IOMEM
1091	help
1092	  If you say yes here you get support for the
1093	  Simtek STK17TA8 timekeeping chip.
1094
1095	  This driver can also be built as a module. If so, the module
1096	  will be called rtc-stk17ta8.
1097
1098config RTC_DRV_M48T86
1099	tristate "ST M48T86/Dallas DS12887"
1100	help
1101	  If you say Y here you will get support for the
1102	  ST M48T86 and Dallas DS12887 RTC chips.
1103
1104	  This driver can also be built as a module. If so, the module
1105	  will be called rtc-m48t86.
1106
1107config RTC_DRV_M48T35
1108	tristate "ST M48T35"
1109	depends on HAS_IOMEM
1110	help
1111	  If you say Y here you will get support for the
1112	  ST M48T35 RTC chip.
1113
1114	  This driver can also be built as a module, if so, the module
1115	  will be called "rtc-m48t35".
1116
1117config RTC_DRV_M48T59
1118	tristate "ST M48T59/M48T08/M48T02"
1119	depends on HAS_IOMEM
1120	help
1121	  If you say Y here you will get support for the
1122	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1123
1124	  These chips are usually found in Sun SPARC and UltraSPARC
1125	  workstations.
1126
1127	  This driver can also be built as a module, if so, the module
1128	  will be called "rtc-m48t59".
1129
1130config RTC_DRV_MSM6242
1131	tristate "Oki MSM6242"
1132	depends on HAS_IOMEM
1133	help
1134	  If you say yes here you get support for the Oki MSM6242
1135	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1136
1137	  This driver can also be built as a module. If so, the module
1138	  will be called rtc-msm6242.
1139
1140config RTC_DRV_BQ4802
1141	tristate "TI BQ4802"
1142	depends on HAS_IOMEM
1143	help
1144	  If you say Y here you will get support for the TI
1145	  BQ4802 RTC chip.
1146
1147	  This driver can also be built as a module. If so, the module
1148	  will be called rtc-bq4802.
1149
1150config RTC_DRV_RP5C01
1151	tristate "Ricoh RP5C01"
1152	depends on HAS_IOMEM
1153	help
1154	  If you say yes here you get support for the Ricoh RP5C01
1155	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1156	  and A4000).
1157
1158	  This driver can also be built as a module. If so, the module
1159	  will be called rtc-rp5c01.
1160
1161config RTC_DRV_V3020
1162	tristate "EM Microelectronic V3020"
1163	help
1164	  If you say yes here you will get support for the
1165	  EM Microelectronic v3020 RTC chip.
1166
1167	  This driver can also be built as a module. If so, the module
1168	  will be called rtc-v3020.
1169
1170config RTC_DRV_WM831X
1171	tristate "Wolfson Microelectronics WM831x RTC"
1172	depends on MFD_WM831X
1173	help
1174	  If you say yes here you will get support for the RTC subsystem
1175	  of the Wolfson Microelectronics WM831X series PMICs.
1176
1177	  This driver can also be built as a module. If so, the module
1178	  will be called "rtc-wm831x".
1179
1180config RTC_DRV_WM8350
1181	tristate "Wolfson Microelectronics WM8350 RTC"
1182	depends on MFD_WM8350
1183	help
1184	  If you say yes here you will get support for the RTC subsystem
1185	  of the Wolfson Microelectronics WM8350.
1186
1187	  This driver can also be built as a module. If so, the module
1188	  will be called "rtc-wm8350".
1189
1190config RTC_DRV_SC27XX
1191	tristate "Spreadtrum SC27xx RTC"
1192	depends on MFD_SC27XX_PMIC || COMPILE_TEST
1193	help
1194	  If you say Y here you will get support for the RTC subsystem
1195	  of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs
1196	  includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.
1197
1198	  This driver can also be built as a module. If so, the module
1199	  will be called rtc-sc27xx.
1200
1201config RTC_DRV_SPEAR
1202	tristate "SPEAR ST RTC"
1203	depends on PLAT_SPEAR || COMPILE_TEST
1204	default y
1205	help
1206	 If you say Y here you will get support for the RTC found on
1207	 spear
1208
1209config RTC_DRV_PCF50633
1210	depends on MFD_PCF50633
1211	tristate "NXP PCF50633 RTC"
1212	help
1213	  If you say yes here you get support for the RTC subsystem of the
1214	  NXP PCF50633 used in embedded systems.
1215
1216config RTC_DRV_AB3100
1217	tristate "ST-Ericsson AB3100 RTC"
1218	depends on AB3100_CORE
1219	default y if AB3100_CORE
1220	help
1221	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1222	  support. This chip contains a battery- and capacitor-backed RTC.
1223
1224config RTC_DRV_AB8500
1225	tristate "ST-Ericsson AB8500 RTC"
1226	depends on AB8500_CORE
1227	select RTC_INTF_DEV
1228	select RTC_INTF_DEV_UIE_EMUL
1229	help
1230	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1231	  support. This chip contains a battery- and capacitor-backed RTC.
1232
1233config RTC_DRV_NUC900
1234	tristate "NUC910/NUC920 RTC driver"
1235	depends on ARCH_W90X900 || COMPILE_TEST
1236	help
1237	  If you say yes here you get support for the RTC subsystem of the
1238	  NUC910/NUC920 used in embedded systems.
1239
1240config RTC_DRV_OPAL
1241	tristate "IBM OPAL RTC driver"
1242	depends on PPC_POWERNV
1243	default y
1244	help
1245	  If you say yes here you get support for the PowerNV platform RTC
1246	  driver based on OPAL interfaces.
1247
1248	  This driver can also be built as a module. If so, the module
1249	  will be called rtc-opal.
1250
1251config RTC_DRV_ZYNQMP
1252	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1253	depends on OF
1254	help
1255	  If you say yes here you get support for the RTC controller found on
1256	  Xilinx Zynq Ultrascale+ MPSoC.
1257
1258comment "on-CPU RTC drivers"
1259
1260config RTC_DRV_ASM9260
1261	tristate "Alphascale asm9260 RTC"
1262	depends on MACH_ASM9260 || COMPILE_TEST
1263	help
1264	  If you say yes here you get support for the RTC on the
1265	  Alphascale asm9260 SoC.
1266
1267	  This driver can also be built as a module. If so, the module
1268	  will be called rtc-asm9260.
1269
1270config RTC_DRV_DAVINCI
1271	tristate "TI DaVinci RTC"
1272	depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1273	help
1274	  If you say yes here you get support for the RTC on the
1275	  DaVinci platforms (DM365).
1276
1277	  This driver can also be built as a module. If so, the module
1278	  will be called rtc-davinci.
1279
1280config RTC_DRV_DIGICOLOR
1281	tristate "Conexant Digicolor RTC"
1282	depends on ARCH_DIGICOLOR || COMPILE_TEST
1283	help
1284	  If you say yes here you get support for the RTC on Conexant
1285	  Digicolor platforms. This currently includes the CX92755 SoC.
1286
1287	  This driver can also be built as a module. If so, the module
1288	  will be called rtc-digicolor.
1289
1290config RTC_DRV_IMXDI
1291	tristate "Freescale IMX DryIce Real Time Clock"
1292	depends on ARCH_MXC
1293	help
1294	   Support for Freescale IMX DryIce RTC
1295
1296	   This driver can also be built as a module, if so, the module
1297	   will be called "rtc-imxdi".
1298
1299config RTC_DRV_OMAP
1300	tristate "TI OMAP Real Time Clock"
1301	depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1302	depends on OF
1303	depends on PINCTRL
1304	select GENERIC_PINCONF
1305	help
1306	  Say "yes" here to support the on chip real time clock
1307	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1308
1309	  This driver can also be built as a module, if so, module
1310	  will be called rtc-omap.
1311
1312config HAVE_S3C_RTC
1313	bool
1314	help
1315	  This will include RTC support for Samsung SoCs. If
1316	  you want to include RTC support for any machine, kindly
1317	  select this in the respective mach-XXXX/Kconfig file.
1318
1319config RTC_DRV_S3C
1320	tristate "Samsung S3C series SoC RTC"
1321	depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1322	help
1323	  RTC (Realtime Clock) driver for the clock inbuilt into the
1324	  Samsung S3C24XX series of SoCs. This can provide periodic
1325	  interrupt rates from 1Hz to 64Hz for user programs, and
1326	  wakeup from Alarm.
1327
1328	  The driver currently supports the common features on all the
1329	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1330	  and S3C2442.
1331
1332	  This driver can also be build as a module. If so, the module
1333	  will be called rtc-s3c.
1334
1335config RTC_DRV_EP93XX
1336	tristate "Cirrus Logic EP93XX"
1337	depends on ARCH_EP93XX || COMPILE_TEST
1338	help
1339	  If you say yes here you get support for the
1340	  RTC embedded in the Cirrus Logic EP93XX processors.
1341
1342	  This driver can also be built as a module. If so, the module
1343	  will be called rtc-ep93xx.
1344
1345config RTC_DRV_SA1100
1346	tristate "SA11x0/PXA2xx/PXA910"
1347	depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1348	help
1349	  If you say Y here you will get access to the real time clock
1350	  built into your SA11x0 or PXA2xx CPU.
1351
1352	  To compile this driver as a module, choose M here: the
1353	  module will be called rtc-sa1100.
1354
1355config RTC_DRV_SH
1356	tristate "SuperH On-Chip RTC"
1357	depends on SUPERH || ARCH_RENESAS
1358	help
1359	  Say Y here to enable support for the on-chip RTC found in
1360	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1361
1362	  To compile this driver as a module, choose M here: the
1363	  module will be called rtc-sh.
1364
1365config RTC_DRV_VR41XX
1366	tristate "NEC VR41XX"
1367	depends on CPU_VR41XX || COMPILE_TEST
1368	help
1369	  If you say Y here you will get access to the real time clock
1370	  built into your NEC VR41XX CPU.
1371
1372	  To compile this driver as a module, choose M here: the
1373	  module will be called rtc-vr41xx.
1374
1375config RTC_DRV_PL030
1376	tristate "ARM AMBA PL030 RTC"
1377	depends on ARM_AMBA
1378	help
1379	  If you say Y here you will get access to ARM AMBA
1380	  PrimeCell PL030 RTC found on certain ARM SOCs.
1381
1382	  To compile this driver as a module, choose M here: the
1383	  module will be called rtc-pl030.
1384
1385config RTC_DRV_PL031
1386	tristate "ARM AMBA PL031 RTC"
1387	depends on ARM_AMBA
1388	help
1389	  If you say Y here you will get access to ARM AMBA
1390	  PrimeCell PL031 RTC found on certain ARM SOCs.
1391
1392	  To compile this driver as a module, choose M here: the
1393	  module will be called rtc-pl031.
1394
1395config RTC_DRV_AT32AP700X
1396	tristate "AT32AP700X series RTC"
1397	depends on PLATFORM_AT32AP || COMPILE_TEST
1398	help
1399	  Driver for the internal RTC (Realtime Clock) on Atmel AVR32
1400	  AT32AP700x family processors.
1401
1402config RTC_DRV_AT91RM9200
1403	tristate "AT91RM9200 or some AT91SAM9 RTC"
1404	depends on ARCH_AT91 || COMPILE_TEST
1405	help
1406	  Driver for the internal RTC (Realtime Clock) module found on
1407	  Atmel AT91RM9200's and some  AT91SAM9 chips. On AT91SAM9 chips
1408	  this is powered by the backup power supply.
1409
1410config RTC_DRV_AT91SAM9
1411	tristate "AT91SAM9 RTT as RTC"
1412	depends on ARCH_AT91 || COMPILE_TEST
1413	select MFD_SYSCON
1414	help
1415	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1416	  can be used as an RTC thanks to the backup power supply (e.g. a
1417	  small coin cell battery) which keeps this block and the GPBR
1418	  (General Purpose Backup Registers) block powered when the device
1419	  is shutdown.
1420	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1421	  probably want to use the real RTC block instead of the "RTT as an
1422	  RTC" driver.
1423
1424config RTC_DRV_AU1XXX
1425	tristate "Au1xxx Counter0 RTC support"
1426	depends on MIPS_ALCHEMY
1427	help
1428	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1429	  counter) to be used as a RTC.
1430
1431	  This driver can also be built as a module. If so, the module
1432	  will be called rtc-au1xxx.
1433
1434config RTC_DRV_BFIN
1435	tristate "Blackfin On-Chip RTC"
1436	depends on BLACKFIN && !BF561
1437	help
1438	  If you say yes here you will get support for the
1439	  Blackfin On-Chip Real Time Clock.
1440
1441	  This driver can also be built as a module. If so, the module
1442	  will be called rtc-bfin.
1443
1444config RTC_DRV_RS5C313
1445	tristate "Ricoh RS5C313"
1446	depends on SH_LANDISK
1447	help
1448	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1449
1450config RTC_DRV_GENERIC
1451	tristate "Generic RTC support"
1452	# Please consider writing a new RTC driver instead of using the generic
1453	# RTC abstraction
1454	depends on PARISC || M68K || PPC || SUPERH32 || COMPILE_TEST
1455	help
1456	  Say Y or M here to enable RTC support on systems using the generic
1457	  RTC abstraction. If you do not know what you are doing, you should
1458	  just say Y.
1459
1460config RTC_DRV_PXA
1461	tristate "PXA27x/PXA3xx"
1462	depends on ARCH_PXA
1463	select RTC_DRV_SA1100
1464	help
1465         If you say Y here you will get access to the real time clock
1466         built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1467         consisting of an SA1100 compatible RTC and the extended PXA RTC.
1468
1469	 This RTC driver uses PXA RTC registers available since pxa27x
1470	 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1471
1472config RTC_DRV_VT8500
1473	tristate "VIA/WonderMedia 85xx SoC RTC"
1474	depends on ARCH_VT8500 || COMPILE_TEST
1475	help
1476	  If you say Y here you will get access to the real time clock
1477	  built into your VIA VT8500 SoC or its relatives.
1478
1479
1480config RTC_DRV_SUN4V
1481	bool "SUN4V Hypervisor RTC"
1482	depends on SPARC64
1483	help
1484	  If you say Y here you will get support for the Hypervisor
1485	  based RTC on SUN4V systems.
1486
1487config RTC_DRV_SUN6I
1488	bool "Allwinner A31 RTC"
1489	default MACH_SUN6I || MACH_SUN8I
1490	depends on COMMON_CLK
1491	depends on ARCH_SUNXI || COMPILE_TEST
1492	help
1493	  If you say Y here you will get support for the RTC found in
1494	  some Allwinner SoCs like the A31 or the A64.
1495
1496config RTC_DRV_SUNXI
1497	tristate "Allwinner sun4i/sun7i RTC"
1498	depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1499	help
1500	  If you say Y here you will get support for the RTC found on
1501	  Allwinner A10/A20.
1502
1503config RTC_DRV_STARFIRE
1504	bool "Starfire RTC"
1505	depends on SPARC64
1506	help
1507	  If you say Y here you will get support for the RTC found on
1508	  Starfire systems.
1509
1510config RTC_DRV_TX4939
1511	tristate "TX4939 SoC"
1512	depends on SOC_TX4939
1513	help
1514	  Driver for the internal RTC (Realtime Clock) module found on
1515	  Toshiba TX4939 SoC.
1516
1517config RTC_DRV_MV
1518	tristate "Marvell SoC RTC"
1519	depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1520	help
1521	  If you say yes here you will get support for the in-chip RTC
1522	  that can be found in some of Marvell's SoC devices, such as
1523	  the Kirkwood 88F6281 and 88F6192.
1524
1525	  This driver can also be built as a module. If so, the module
1526	  will be called rtc-mv.
1527
1528config RTC_DRV_ARMADA38X
1529	tristate "Armada 38x Marvell SoC RTC"
1530	depends on ARCH_MVEBU || COMPILE_TEST
1531	help
1532	  If you say yes here you will get support for the in-chip RTC
1533	  that can be found in the Armada 38x Marvell's SoC device
1534
1535	  This driver can also be built as a module. If so, the module
1536	  will be called armada38x-rtc.
1537
1538config RTC_DRV_FTRTC010
1539	tristate "Faraday Technology FTRTC010 RTC"
1540	depends on HAS_IOMEM
1541	default ARCH_GEMINI
1542	help
1543	  If you say Y here you will get support for the
1544	  Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
1545
1546	  This driver can also be built as a module. If so, the module
1547	  will be called rtc-ftrtc010.
1548
1549config RTC_DRV_PS3
1550	tristate "PS3 RTC"
1551	depends on PPC_PS3
1552	help
1553	  If you say yes here you will get support for the RTC on PS3.
1554
1555	  This driver can also be built as a module. If so, the module
1556	  will be called rtc-ps3.
1557
1558config RTC_DRV_COH901331
1559	tristate "ST-Ericsson COH 901 331 RTC"
1560	depends on ARCH_U300 || COMPILE_TEST
1561	help
1562	  If you say Y here you will get access to ST-Ericsson
1563	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
1564	  Platforms.
1565
1566	  This driver can also be built as a module. If so, the module
1567	  will be called "rtc-coh901331".
1568
1569
1570config RTC_DRV_STMP
1571	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1572	depends on ARCH_MXS || COMPILE_TEST
1573	select STMP_DEVICE
1574	help
1575	  If you say yes here you will get support for the onboard
1576	  STMP3xxx/i.MX23/i.MX28 RTC.
1577
1578	  This driver can also be built as a module. If so, the module
1579	  will be called rtc-stmp3xxx.
1580
1581config RTC_DRV_PCAP
1582	tristate "PCAP RTC"
1583	depends on EZX_PCAP
1584	help
1585	  If you say Y here you will get support for the RTC found on
1586	  the PCAP2 ASIC used on some Motorola phones.
1587
1588config RTC_DRV_MC13XXX
1589	depends on MFD_MC13XXX
1590	tristate "Freescale MC13xxx RTC"
1591	help
1592	  This enables support for the RTCs found on Freescale's PMICs
1593	  MC13783 and MC13892.
1594
1595config RTC_DRV_MPC5121
1596	tristate "Freescale MPC5121 built-in RTC"
1597	depends on PPC_MPC512x || PPC_MPC52xx
1598	help
1599	  If you say yes here you will get support for the
1600	  built-in RTC on MPC5121 or on MPC5200.
1601
1602	  This driver can also be built as a module. If so, the module
1603	  will be called rtc-mpc5121.
1604
1605config RTC_DRV_JZ4740
1606	tristate "Ingenic JZ4740 SoC"
1607	depends on MACH_INGENIC || COMPILE_TEST
1608	help
1609	  If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1610	  controllers.
1611
1612	  This driver can also be buillt as a module. If so, the module
1613	  will be called rtc-jz4740.
1614
1615config RTC_DRV_LPC24XX
1616	tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1617	depends on ARCH_LPC18XX || COMPILE_TEST
1618	depends on OF && HAS_IOMEM
1619	help
1620	  This enables support for the NXP RTC found which can be found on
1621	  NXP LPC178x/18xx/408x/43xx devices.
1622
1623	  If you have one of the devices above enable this driver to use
1624	  the hardware RTC. This driver can also be built as a module. If
1625	  so, the module will be called rtc-lpc24xx.
1626
1627config RTC_DRV_LPC32XX
1628	depends on ARCH_LPC32XX || COMPILE_TEST
1629	tristate "NXP LPC32XX RTC"
1630	help
1631	  This enables support for the NXP RTC in the LPC32XX
1632
1633	  This driver can also be built as a module. If so, the module
1634	  will be called rtc-lpc32xx.
1635
1636config RTC_DRV_PM8XXX
1637	tristate "Qualcomm PMIC8XXX RTC"
1638	depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1639	help
1640	  If you say yes here you get support for the
1641	  Qualcomm PMIC8XXX RTC.
1642
1643	  To compile this driver as a module, choose M here: the
1644	  module will be called rtc-pm8xxx.
1645
1646config RTC_DRV_TEGRA
1647	tristate "NVIDIA Tegra Internal RTC driver"
1648	depends on ARCH_TEGRA || COMPILE_TEST
1649	help
1650	  If you say yes here you get support for the
1651	  Tegra 200 series internal RTC module.
1652
1653	  This drive can also be built as a module. If so, the module
1654	  will be called rtc-tegra.
1655
1656config RTC_DRV_TILE
1657	tristate "Tilera hypervisor RTC support"
1658	depends on TILE
1659	help
1660	  Enable support for the Linux driver side of the Tilera
1661	  hypervisor's real-time clock interface.
1662
1663config RTC_DRV_PUV3
1664	tristate "PKUnity v3 RTC support"
1665	depends on ARCH_PUV3
1666	help
1667	  This enables support for the RTC in the PKUnity-v3 SoCs.
1668
1669	  This drive can also be built as a module. If so, the module
1670	  will be called rtc-puv3.
1671
1672config RTC_DRV_LOONGSON1
1673	tristate "loongson1 RTC support"
1674	depends on MACH_LOONGSON32
1675	help
1676	  This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1677	  counter) to be used as a RTC.
1678
1679	  This driver can also be built as a module. If so, the module
1680	  will be called rtc-ls1x.
1681
1682config RTC_DRV_MXC
1683	tristate "Freescale MXC Real Time Clock"
1684	depends on ARCH_MXC
1685	help
1686	   If you say yes here you get support for the Freescale MXC
1687	   RTC module.
1688
1689	   This driver can also be built as a module, if so, the module
1690	   will be called "rtc-mxc".
1691
1692config RTC_DRV_SNVS
1693	tristate "Freescale SNVS RTC support"
1694	select REGMAP_MMIO
1695	depends on HAS_IOMEM
1696	depends on OF
1697	help
1698	   If you say yes here you get support for the Freescale SNVS
1699	   Low Power (LP) RTC module.
1700
1701	   This driver can also be built as a module, if so, the module
1702	   will be called "rtc-snvs".
1703
1704config RTC_DRV_SIRFSOC
1705	tristate "SiRFSOC RTC"
1706	depends on ARCH_SIRF
1707	help
1708	  Say "yes" here to support the real time clock on SiRF SOC chips.
1709	  This driver can also be built as a module called rtc-sirfsoc.
1710
1711config RTC_DRV_ST_LPC
1712	tristate "STMicroelectronics LPC RTC"
1713	depends on ARCH_STI
1714	depends on OF
1715	help
1716	  Say Y here to include STMicroelectronics Low Power Controller
1717	  (LPC) based RTC support.
1718
1719	  To compile this driver as a module, choose M here: the
1720	  module will be called rtc-st-lpc.
1721
1722config RTC_DRV_MOXART
1723	tristate "MOXA ART RTC"
1724	depends on ARCH_MOXART || COMPILE_TEST
1725	help
1726	   If you say yes here you get support for the MOXA ART
1727	   RTC module.
1728
1729	   This driver can also be built as a module. If so, the module
1730	   will be called rtc-moxart
1731
1732config RTC_DRV_MT6397
1733	tristate "MediaTek PMIC based RTC"
1734	depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1735	help
1736	  This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
1737	  MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1738	  MediaTek(R) RTC driver.
1739
1740	  If you want to use MediaTek(R) RTC interface, select Y or M here.
1741
1742config RTC_DRV_MT7622
1743	tristate "MediaTek SoC based RTC"
1744	depends on ARCH_MEDIATEK || COMPILE_TEST
1745	help
1746	  This enables support for the real time clock built in the MediaTek
1747	  SoCs.
1748
1749	  This drive can also be built as a module. If so, the module
1750	  will be called rtc-mt7622.
1751
1752config RTC_DRV_XGENE
1753	tristate "APM X-Gene RTC"
1754	depends on HAS_IOMEM
1755	depends on ARCH_XGENE || COMPILE_TEST
1756	help
1757	  If you say yes here you get support for the APM X-Gene SoC real time
1758	  clock.
1759
1760	  This driver can also be built as a module, if so, the module
1761	  will be called "rtc-xgene".
1762
1763config RTC_DRV_PIC32
1764	tristate "Microchip PIC32 RTC"
1765	depends on MACH_PIC32
1766	default y
1767	help
1768	   If you say yes here you get support for the PIC32 RTC module.
1769
1770	   This driver can also be built as a module. If so, the module
1771	   will be called rtc-pic32
1772
1773config RTC_DRV_R7301
1774	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1775	select REGMAP_MMIO
1776	depends on OF && HAS_IOMEM
1777	help
1778	   If you say yes here you get support for the EPSON TOYOCOM
1779	   RTC-7301SF/DG chips.
1780
1781	   This driver can also be built as a module. If so, the module
1782	   will be called rtc-r7301.
1783
1784config RTC_DRV_STM32
1785	tristate "STM32 RTC"
1786	select REGMAP_MMIO
1787	depends on ARCH_STM32 || COMPILE_TEST
1788	help
1789	   If you say yes here you get support for the STM32 On-Chip
1790	   Real Time Clock.
1791
1792	   This driver can also be built as a module, if so, the module
1793	   will be called "rtc-stm32".
1794
1795config RTC_DRV_CPCAP
1796	depends on MFD_CPCAP
1797	tristate "Motorola CPCAP RTC"
1798	help
1799	   Say y here for CPCAP rtc found on some Motorola phones
1800	   and tablets such as Droid 4.
1801
1802config RTC_DRV_RTD119X
1803	bool "Realtek RTD129x RTC"
1804	depends on ARCH_REALTEK || COMPILE_TEST
1805	default ARCH_REALTEK
1806	help
1807	  If you say yes here, you get support for the RTD1295 SoC
1808	  Real Time Clock.
1809
1810comment "HID Sensor RTC drivers"
1811
1812config RTC_DRV_HID_SENSOR_TIME
1813	tristate "HID Sensor Time"
1814	depends on USB_HID
1815	select IIO
1816	select HID_SENSOR_HUB
1817	select HID_SENSOR_IIO_COMMON
1818	help
1819	  Say yes here to build support for the HID Sensors of type Time.
1820	  This drivers makes such sensors available as RTCs.
1821
1822	  If this driver is compiled as a module, it will be named
1823	  rtc-hid-sensor-time.
1824
1825config RTC_DRV_GOLDFISH
1826	tristate "Goldfish Real Time Clock"
1827	depends on MIPS && (GOLDFISH || COMPILE_TEST)
1828	help
1829	  Say yes to enable RTC driver for the Goldfish based virtual platform.
1830
1831	  Goldfish is a code name for the virtual platform developed by Google
1832	  for Android emulation.
1833
1834endif # RTC_CLASS
1835