xref: /openbmc/linux/drivers/rtc/Kconfig (revision 7c768f84)
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_CENTURY
248	bool "Century bit support for rtc-ds1307"
249	depends on RTC_DRV_DS1307
250	default n
251	help
252	  The DS1307 driver suffered from a bug where it was enabling the
253	  century bit inconditionnally but never used it when reading the time.
254	  It made the driver unable to support dates beyond 2099.
255	  Setting this option will add proper support for the century bit but if
256	  the time was previously set using a kernel predating this option,
257	  reading the date will return a date in the next century.
258	  To solve that, you could boot a kernel without this option set, set
259	  the RTC date and then boot a kernel with this option set.
260
261config RTC_DRV_DS1374
262	tristate "Dallas/Maxim DS1374"
263	help
264	  If you say yes here you get support for Dallas Semiconductor
265	  DS1374 real-time clock chips. If an interrupt is associated
266	  with the device, the alarm functionality is supported.
267
268	  This driver can also be built as a module. If so, the module
269	  will be called rtc-ds1374.
270
271config RTC_DRV_DS1374_WDT
272	bool "Dallas/Maxim DS1374 watchdog timer"
273	depends on RTC_DRV_DS1374
274	help
275	  If you say Y here you will get support for the
276	  watchdog timer in the Dallas Semiconductor DS1374
277	  real-time clock chips.
278
279config RTC_DRV_DS1672
280	tristate "Dallas/Maxim DS1672"
281	help
282	  If you say yes here you get support for the
283	  Dallas/Maxim DS1672 timekeeping chip.
284
285	  This driver can also be built as a module. If so, the module
286	  will be called rtc-ds1672.
287
288config RTC_DRV_HYM8563
289	tristate "Haoyu Microelectronics HYM8563"
290	depends on OF
291	help
292	  Say Y to enable support for the HYM8563 I2C RTC chip. Apart
293	  from the usual rtc functions it provides a clock output of
294	  up to 32kHz.
295
296	  This driver can also be built as a module. If so, the module
297	  will be called rtc-hym8563.
298
299config RTC_DRV_LP8788
300	tristate "TI LP8788 RTC driver"
301	depends on MFD_LP8788
302	help
303	  Say Y to enable support for the LP8788 RTC/ALARM driver.
304
305config RTC_DRV_MAX6900
306	tristate "Maxim MAX6900"
307	help
308	  If you say yes here you will get support for the
309	  Maxim MAX6900 I2C RTC chip.
310
311	  This driver can also be built as a module. If so, the module
312	  will be called rtc-max6900.
313
314config RTC_DRV_MAX8907
315	tristate "Maxim MAX8907"
316	depends on MFD_MAX8907 || COMPILE_TEST
317	help
318	  If you say yes here you will get support for the
319	  RTC of Maxim MAX8907 PMIC.
320
321	  This driver can also be built as a module. If so, the module
322	  will be called rtc-max8907.
323
324config RTC_DRV_MAX8925
325	tristate "Maxim MAX8925"
326	depends on MFD_MAX8925
327	help
328	  If you say yes here you will get support for the
329	  RTC of Maxim MAX8925 PMIC.
330
331	  This driver can also be built as a module. If so, the module
332	  will be called rtc-max8925.
333
334config RTC_DRV_MAX8998
335	tristate "Maxim MAX8998"
336	depends on MFD_MAX8998
337	help
338	  If you say yes here you will get support for the
339	  RTC of Maxim MAX8998 PMIC.
340
341	  This driver can also be built as a module. If so, the module
342	  will be called rtc-max8998.
343
344config RTC_DRV_MAX8997
345	tristate "Maxim MAX8997"
346	depends on MFD_MAX8997
347	help
348	  If you say yes here you will get support for the
349	  RTC of Maxim MAX8997 PMIC.
350
351	  This driver can also be built as a module. If so, the module
352	  will be called rtc-max8997.
353
354config RTC_DRV_MAX77686
355	tristate "Maxim MAX77686"
356	depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
357	help
358	  If you say yes here you will get support for the
359	  RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
360
361	  This driver can also be built as a module. If so, the module
362	  will be called rtc-max77686.
363
364config RTC_DRV_RK808
365	tristate "Rockchip RK805/RK808/RK818 RTC"
366	depends on MFD_RK808
367	help
368	  If you say yes here you will get support for the
369	  RTC of RK805, RK808 and RK818 PMIC.
370
371	  This driver can also be built as a module. If so, the module
372	  will be called rk808-rtc.
373
374config RTC_DRV_RS5C372
375	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
376	help
377	  If you say yes here you get support for the
378	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
379
380	  This driver can also be built as a module. If so, the module
381	  will be called rtc-rs5c372.
382
383config RTC_DRV_ISL1208
384	tristate "Intersil ISL1208"
385	help
386	  If you say yes here you get support for the
387	  Intersil ISL1208 RTC chip.
388
389	  This driver can also be built as a module. If so, the module
390	  will be called rtc-isl1208.
391
392config RTC_DRV_ISL12022
393	tristate "Intersil ISL12022"
394	help
395	  If you say yes here you get support for the
396	  Intersil ISL12022 RTC chip.
397
398	  This driver can also be built as a module. If so, the module
399	  will be called rtc-isl12022.
400
401config RTC_DRV_ISL12026
402	tristate "Intersil ISL12026"
403	depends on OF || COMPILE_TEST
404	help
405	  If you say yes here you get support for the
406	  Intersil ISL12026 RTC chip.
407
408	  This driver can also be built as a module. If so, the module
409	  will be called rtc-isl12026.
410
411config RTC_DRV_X1205
412	tristate "Xicor/Intersil X1205"
413	help
414	  If you say yes here you get support for the
415	  Xicor/Intersil X1205 RTC chip.
416
417	  This driver can also be built as a module. If so, the module
418	  will be called rtc-x1205.
419
420config RTC_DRV_PCF8523
421	tristate "NXP PCF8523"
422	help
423	  If you say yes here you get support for the NXP PCF8523 RTC
424	  chips.
425
426	  This driver can also be built as a module. If so, the module
427	  will be called rtc-pcf8523.
428
429config RTC_DRV_PCF85063
430	tristate "NXP PCF85063"
431	help
432	  If you say yes here you get support for the PCF85063 RTC chip
433
434	  This driver can also be built as a module. If so, the module
435	  will be called rtc-pcf85063.
436
437config RTC_DRV_PCF85363
438	tristate "NXP PCF85363"
439	depends on I2C
440	select REGMAP_I2C
441	help
442	  If you say yes here you get support for the PCF85363 RTC chip.
443
444	  This driver can also be built as a module. If so, the module
445	  will be called rtc-pcf85363.
446
447	  The nvmem interface will be named pcf85363-#, where # is the
448	  zero-based instance number.
449
450config RTC_DRV_PCF8563
451	tristate "Philips PCF8563/Epson RTC8564"
452	help
453	  If you say yes here you get support for the
454	  Philips PCF8563 RTC chip. The Epson RTC8564
455	  should work as well.
456
457	  This driver can also be built as a module. If so, the module
458	  will be called rtc-pcf8563.
459
460config RTC_DRV_PCF8583
461	tristate "Philips PCF8583"
462	help
463	  If you say yes here you get support for the Philips PCF8583
464	  RTC chip found on Acorn RiscPCs. This driver supports the
465	  platform specific method of retrieving the current year from
466	  the RTC's SRAM. It will work on other platforms with the same
467	  chip, but the year will probably have to be tweaked.
468
469	  This driver can also be built as a module. If so, the module
470	  will be called rtc-pcf8583.
471
472config RTC_DRV_M41T80
473	tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
474	help
475	  If you say Y here you will get support for the ST M41T60
476	  and M41T80 RTC chips series. Currently, the following chips are
477	  supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
478	  M41ST85, M41ST87, and MicroCrystal RV4162.
479
480	  This driver can also be built as a module. If so, the module
481	  will be called rtc-m41t80.
482
483config RTC_DRV_M41T80_WDT
484	bool "ST M41T65/M41T80 series RTC watchdog timer"
485	depends on RTC_DRV_M41T80
486	help
487	  If you say Y here you will get support for the
488	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
489
490config RTC_DRV_BQ32K
491	tristate "TI BQ32000"
492	help
493	  If you say Y here you will get support for the TI
494	  BQ32000 I2C RTC chip.
495
496	  This driver can also be built as a module. If so, the module
497	  will be called rtc-bq32k.
498
499config RTC_DRV_DM355EVM
500	tristate "TI DaVinci DM355 EVM RTC"
501	depends on MFD_DM355EVM_MSP
502	help
503	  Supports the RTC firmware in the MSP430 on the DM355 EVM.
504
505config RTC_DRV_TWL92330
506	bool "TI TWL92330/Menelaus"
507	depends on MENELAUS
508	help
509	  If you say yes here you get support for the RTC on the
510	  TWL92330 "Menelaus" power management chip, used with OMAP2
511	  platforms. The support is integrated with the rest of
512	  the Menelaus driver; it's not separate module.
513
514config RTC_DRV_TWL4030
515	tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
516	depends on TWL4030_CORE
517	depends on OF
518	help
519	  If you say yes here you get support for the RTC on the
520	  TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
521
522	  This driver can also be built as a module. If so, the module
523	  will be called rtc-twl.
524
525config RTC_DRV_PALMAS
526	tristate "TI Palmas RTC driver"
527	depends on MFD_PALMAS
528	help
529	  If you say yes here you get support for the RTC of TI PALMA series PMIC
530	  chips.
531
532	  This driver can also be built as a module. If so, the module
533	  will be called rtc-palma.
534
535config RTC_DRV_TPS6586X
536	tristate "TI TPS6586X RTC driver"
537	depends on MFD_TPS6586X
538	help
539	  TI Power Management IC TPS6586X supports RTC functionality
540	  along with alarm. This driver supports the RTC driver for
541	  the TPS6586X RTC module.
542
543config RTC_DRV_TPS65910
544	tristate "TI TPS65910 RTC driver"
545	depends on RTC_CLASS && MFD_TPS65910
546	help
547	  If you say yes here you get support for the RTC on the
548	  TPS65910 chips.
549
550	  This driver can also be built as a module. If so, the module
551	  will be called rtc-tps65910.
552
553config RTC_DRV_TPS80031
554	tristate "TI TPS80031/TPS80032 RTC driver"
555	depends on MFD_TPS80031
556	help
557	  TI Power Management IC TPS80031 supports RTC functionality
558	  along with alarm. This driver supports the RTC driver for
559	  the TPS80031 RTC module.
560
561config RTC_DRV_RC5T583
562	tristate "RICOH 5T583 RTC driver"
563	depends on MFD_RC5T583
564	help
565	  If you say yes here you get support for the RTC on the
566	  RICOH 5T583 chips.
567
568	  This driver can also be built as a module. If so, the module
569	  will be called rtc-rc5t583.
570
571config RTC_DRV_S35390A
572	tristate "Seiko Instruments S-35390A"
573	select BITREVERSE
574	help
575	  If you say yes here you will get support for the Seiko
576	  Instruments S-35390A.
577
578	  This driver can also be built as a module. If so the module
579	  will be called rtc-s35390a.
580
581config RTC_DRV_FM3130
582	tristate "Ramtron FM3130"
583	help
584	  If you say Y here you will get support for the
585	  Ramtron FM3130 RTC chips.
586	  Ramtron FM3130 is a chip with two separate devices inside,
587	  RTC clock and FRAM. This driver provides only RTC functionality.
588
589	  This driver can also be built as a module. If so the module
590	  will be called rtc-fm3130.
591
592config RTC_DRV_RX8010
593	tristate "Epson RX8010SJ"
594	depends on I2C
595	help
596	  If you say yes here you get support for the Epson RX8010SJ RTC
597	  chip.
598
599	  This driver can also be built as a module. If so, the module
600	  will be called rtc-rx8010.
601
602config RTC_DRV_RX8581
603	tristate "Epson RX-8581"
604	help
605	  If you say yes here you will get support for the Epson RX-8581.
606
607	  This driver can also be built as a module. If so the module
608	  will be called rtc-rx8581.
609
610config RTC_DRV_RX8025
611	tristate "Epson RX-8025SA/NB"
612	help
613	  If you say yes here you get support for the Epson
614	  RX-8025SA/NB RTC chips.
615
616	  This driver can also be built as a module. If so, the module
617	  will be called rtc-rx8025.
618
619config RTC_DRV_EM3027
620	tristate "EM Microelectronic EM3027"
621	help
622	  If you say yes here you get support for the EM
623	  Microelectronic EM3027 RTC chips.
624
625	  This driver can also be built as a module. If so, the module
626	  will be called rtc-em3027.
627
628config RTC_DRV_RV8803
629	tristate "Micro Crystal RV8803, Epson RX8900"
630	help
631	  If you say yes here you get support for the Micro Crystal RV8803 and
632	  Epson RX8900 RTC chips.
633
634	  This driver can also be built as a module. If so, the module
635	  will be called rtc-rv8803.
636
637config RTC_DRV_S5M
638	tristate "Samsung S2M/S5M series"
639	depends on MFD_SEC_CORE || COMPILE_TEST
640	select REGMAP_IRQ
641	help
642	  If you say yes here you will get support for the
643	  RTC of Samsung S2MPS14 and S5M PMIC series.
644
645	  This driver can also be built as a module. If so, the module
646	  will be called rtc-s5m.
647
648endif # I2C
649
650comment "SPI RTC drivers"
651
652if SPI_MASTER
653
654config RTC_DRV_M41T93
655	tristate "ST M41T93"
656	help
657	  If you say yes here you will get support for the
658	  ST M41T93 SPI RTC chip.
659
660	  This driver can also be built as a module. If so, the module
661	  will be called rtc-m41t93.
662
663config RTC_DRV_M41T94
664	tristate "ST M41T94"
665	help
666	  If you say yes here you will get support for the
667	  ST M41T94 SPI RTC chip.
668
669	  This driver can also be built as a module. If so, the module
670	  will be called rtc-m41t94.
671
672config RTC_DRV_DS1302
673	tristate "Dallas/Maxim DS1302"
674	depends on SPI
675	help
676	  If you say yes here you get support for the Dallas DS1302 RTC chips.
677
678	  This driver can also be built as a module. If so, the module
679	  will be called rtc-ds1302.
680
681config RTC_DRV_DS1305
682	tristate "Dallas/Maxim DS1305/DS1306"
683	help
684	  Select this driver to get support for the Dallas/Maxim DS1305
685	  and DS1306 real time clock chips. These support a trickle
686	  charger, alarms, and NVRAM in addition to the clock.
687
688	  This driver can also be built as a module. If so, the module
689	  will be called rtc-ds1305.
690
691config RTC_DRV_DS1343
692	select REGMAP_SPI
693	tristate "Dallas/Maxim DS1343/DS1344"
694	help
695	  If you say yes here you get support for the
696	  Dallas/Maxim DS1343 and DS1344 real time clock chips.
697	  Support for trickle charger, alarm is provided.
698
699	  This driver can also be built as a module. If so, the module
700	  will be called rtc-ds1343.
701
702config RTC_DRV_DS1347
703	select REGMAP_SPI
704	tristate "Dallas/Maxim DS1347"
705	help
706	  If you say yes here you get support for the
707	  Dallas/Maxim DS1347 chips.
708
709	  This driver only supports the RTC feature, and not other chip
710	  features such as alarms.
711
712	  This driver can also be built as a module. If so, the module
713	  will be called rtc-ds1347.
714
715config RTC_DRV_DS1390
716	tristate "Dallas/Maxim DS1390/93/94"
717	help
718	  If you say yes here you get support for the
719	  Dallas/Maxim DS1390/93/94 chips.
720
721	  This driver supports the RTC feature and trickle charging but not
722	  other chip features such as alarms.
723
724	  This driver can also be built as a module. If so, the module
725	  will be called rtc-ds1390.
726
727config RTC_DRV_MAX6916
728	tristate "Maxim MAX6916"
729	help
730	  If you say yes here you will get support for the
731	  Maxim MAX6916 SPI RTC chip.
732
733	  This driver only supports the RTC feature, and not other chip
734	  features such as alarms.
735
736	  This driver can also be built as a module. If so, the module
737	  will be called rtc-max6916.
738
739config RTC_DRV_R9701
740	tristate "Epson RTC-9701JE"
741	help
742	  If you say yes here you will get support for the
743	  Epson RTC-9701JE SPI RTC chip.
744
745	  This driver can also be built as a module. If so, the module
746	  will be called rtc-r9701.
747
748config RTC_DRV_RX4581
749	tristate "Epson RX-4581"
750	help
751	  If you say yes here you will get support for the Epson RX-4581.
752
753	  This driver can also be built as a module. If so the module
754	  will be called rtc-rx4581.
755
756config RTC_DRV_RX6110
757	tristate "Epson RX-6110"
758	select REGMAP_SPI
759	help
760	  If you say yes here you will get support for the Epson RX-6610.
761
762	  This driver can also be built as a module. If so the module
763	  will be called rtc-rx6110.
764
765config RTC_DRV_RS5C348
766	tristate "Ricoh RS5C348A/B"
767	help
768	  If you say yes here you get support for the
769	  Ricoh RS5C348A and RS5C348B RTC chips.
770
771	  This driver can also be built as a module. If so, the module
772	  will be called rtc-rs5c348.
773
774config RTC_DRV_MAX6902
775	tristate "Maxim MAX6902"
776	help
777	  If you say yes here you will get support for the
778	  Maxim MAX6902 SPI RTC chip.
779
780	  This driver can also be built as a module. If so, the module
781	  will be called rtc-max6902.
782
783config RTC_DRV_PCF2123
784	tristate "NXP PCF2123"
785	help
786	  If you say yes here you get support for the NXP PCF2123
787	  RTC chip.
788
789	  This driver can also be built as a module. If so, the module
790	  will be called rtc-pcf2123.
791
792config RTC_DRV_MCP795
793	tristate "Microchip MCP795"
794	help
795	  If you say yes here you will get support for the Microchip MCP795.
796
797	  This driver can also be built as a module. If so the module
798	  will be called rtc-mcp795.
799
800endif # SPI_MASTER
801
802#
803# Helper to resolve issues with configs that have SPI enabled but I2C
804# modular.  See SND_SOC_I2C_AND_SPI for more information
805#
806config RTC_I2C_AND_SPI
807	tristate
808	default m if I2C=m
809	default y if I2C=y
810	default y if SPI_MASTER=y
811	select REGMAP_I2C if I2C
812	select REGMAP_SPI if SPI_MASTER
813
814comment "SPI and I2C RTC drivers"
815
816config RTC_DRV_DS3232
817	tristate "Dallas/Maxim DS3232/DS3234"
818	depends on RTC_I2C_AND_SPI
819	help
820	  If you say yes here you get support for Dallas Semiconductor
821	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
822	  with the device, the alarm functionality is supported.
823
824	  This driver can also be built as a module.  If so, the module
825	  will be called rtc-ds3232.
826
827config RTC_DRV_DS3232_HWMON
828	bool "HWMON support for Dallas/Maxim DS3232/DS3234"
829	depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
830	default y
831	help
832	  Say Y here if you want to expose temperature sensor data on
833	  rtc-ds3232
834
835config RTC_DRV_PCF2127
836	tristate "NXP PCF2127"
837	depends on RTC_I2C_AND_SPI
838	help
839	  If you say yes here you get support for the NXP PCF2127/29 RTC
840	  chips.
841
842	  This driver can also be built as a module. If so, the module
843	  will be called rtc-pcf2127.
844
845config RTC_DRV_RV3029C2
846	tristate "Micro Crystal RV3029/3049"
847	depends on RTC_I2C_AND_SPI
848	help
849	  If you say yes here you get support for the Micro Crystal
850	  RV3029 and RV3049 RTC chips.
851
852	  This driver can also be built as a module. If so, the module
853	  will be called rtc-rv3029c2.
854
855config RTC_DRV_RV3029_HWMON
856	bool "HWMON support for RV3029/3049"
857	depends on RTC_DRV_RV3029C2 && HWMON
858	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
859	default y
860	help
861	  Say Y here if you want to expose temperature sensor data on
862	  rtc-rv3029.
863
864comment "Platform RTC drivers"
865
866# this 'CMOS' RTC driver is arch dependent because it requires
867# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
868# global rtc_lock ... it's not yet just another platform_device.
869
870config RTC_DRV_CMOS
871	tristate "PC-style 'CMOS'"
872	depends on X86 || ARM || PPC || MIPS || SPARC64
873	default y if X86
874	select RTC_MC146818_LIB
875	help
876	  Say "yes" here to get direct support for the real time clock
877	  found in every PC or ACPI-based system, and some other boards.
878	  Specifically the original MC146818, compatibles like those in
879	  PC south bridges, the DS12887 or M48T86, some multifunction
880	  or LPC bus chips, and so on.
881
882	  Your system will need to define the platform device used by
883	  this driver, otherwise it won't be accessible. This means
884	  you can safely enable this driver if you don't know whether
885	  or not your board has this kind of hardware.
886
887	  This driver can also be built as a module. If so, the module
888	  will be called rtc-cmos.
889
890config RTC_DRV_ALPHA
891	bool "Alpha PC-style CMOS"
892	depends on ALPHA
893	select RTC_MC146818_LIB
894	default y
895	help
896	  Direct support for the real-time clock found on every Alpha
897	  system, specifically MC146818 compatibles.  If in doubt, say Y.
898
899config RTC_DRV_VRTC
900	tristate "Virtual RTC for Intel MID platforms"
901	depends on X86_INTEL_MID
902	default y if X86_INTEL_MID
903
904	help
905	Say "yes" here to get direct support for the real time clock
906	found on Moorestown platforms. The VRTC is a emulated RTC that
907	derives its clock source from a real RTC in the PMIC. The MC146818
908	style programming interface is mostly conserved, but any
909	updates are done via IPC calls to the system controller FW.
910
911config RTC_DRV_DS1216
912	tristate "Dallas DS1216"
913	depends on SNI_RM
914	help
915	  If you say yes here you get support for the Dallas DS1216 RTC chips.
916
917config RTC_DRV_DS1286
918	tristate "Dallas DS1286"
919	depends on HAS_IOMEM
920	help
921	  If you say yes here you get support for the Dallas DS1286 RTC chips.
922
923config RTC_DRV_DS1511
924	tristate "Dallas DS1511"
925	depends on HAS_IOMEM
926	help
927	  If you say yes here you get support for the
928	  Dallas DS1511 timekeeping/watchdog chip.
929
930	  This driver can also be built as a module. If so, the module
931	  will be called rtc-ds1511.
932
933config RTC_DRV_DS1553
934	tristate "Maxim/Dallas DS1553"
935	depends on HAS_IOMEM
936	help
937	  If you say yes here you get support for the
938	  Maxim/Dallas DS1553 timekeeping chip.
939
940	  This driver can also be built as a module. If so, the module
941	  will be called rtc-ds1553.
942
943config RTC_DRV_DS1685_FAMILY
944	tristate "Dallas/Maxim DS1685 Family"
945	help
946	  If you say yes here you get support for the Dallas/Maxim DS1685
947	  family of real time chips.  This family includes the DS1685/DS1687,
948	  DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
949	  DS17885/DS17887 chips.
950
951	  This driver can also be built as a module. If so, the module
952	  will be called rtc-ds1685.
953
954choice
955	prompt "Subtype"
956	depends on RTC_DRV_DS1685_FAMILY
957	default RTC_DRV_DS1685
958
959config RTC_DRV_DS1685
960	bool "DS1685/DS1687"
961	help
962	  This enables support for the Dallas/Maxim DS1685/DS1687 real time
963	  clock chip.
964
965	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
966	  systems, as well as EPPC-405-UC modules by electronic system design
967	  GmbH.
968
969config RTC_DRV_DS1689
970	bool "DS1689/DS1693"
971	help
972	  This enables support for the Dallas/Maxim DS1689/DS1693 real time
973	  clock chip.
974
975	  This is an older RTC chip, supplanted by the DS1685/DS1687 above,
976	  which supports a few minor features such as Vcc, Vbat, and Power
977	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
978
979	  It also works for the even older DS1688/DS1691 RTC chips, which are
980	  virtually the same and carry the same model number.  Both chips
981	  have 114 bytes of user NVRAM.
982
983config RTC_DRV_DS17285
984	bool "DS17285/DS17287"
985	help
986	  This enables support for the Dallas/Maxim DS17285/DS17287 real time
987	  clock chip.
988
989	  This chip features 2kb of extended NV-SRAM.  It may possibly be
990	  found in some SGI O2 systems (rare).
991
992config RTC_DRV_DS17485
993	bool "DS17485/DS17487"
994	help
995	  This enables support for the Dallas/Maxim DS17485/DS17487 real time
996	  clock chip.
997
998	  This chip features 4kb of extended NV-SRAM.
999
1000config RTC_DRV_DS17885
1001	bool "DS17885/DS17887"
1002	help
1003	  This enables support for the Dallas/Maxim DS17885/DS17887 real time
1004	  clock chip.
1005
1006	  This chip features 8kb of extended NV-SRAM.
1007
1008endchoice
1009
1010config RTC_DS1685_PROC_REGS
1011	bool "Display register values in /proc"
1012	depends on RTC_DRV_DS1685_FAMILY && PROC_FS
1013	help
1014	  Enable this to display a readout of all of the RTC registers in
1015	  /proc/drivers/rtc.  Keep in mind that this can potentially lead
1016	  to lost interrupts, as reading Control Register C will clear
1017	  all pending IRQ flags.
1018
1019	  Unless you are debugging this driver, choose N.
1020
1021config RTC_DRV_DS1742
1022	tristate "Maxim/Dallas DS1742/1743"
1023	depends on HAS_IOMEM
1024	help
1025	  If you say yes here you get support for the
1026	  Maxim/Dallas DS1742/1743 timekeeping chip.
1027
1028	  This driver can also be built as a module. If so, the module
1029	  will be called rtc-ds1742.
1030
1031config RTC_DRV_DS2404
1032	tristate "Maxim/Dallas DS2404"
1033	help
1034	  If you say yes here you get support for the
1035	  Dallas DS2404 RTC chip.
1036
1037	  This driver can also be built as a module. If so, the module
1038	  will be called rtc-ds2404.
1039
1040config RTC_DRV_DA9052
1041	tristate "Dialog DA9052/DA9053 RTC"
1042	depends on PMIC_DA9052
1043	help
1044	  Say y here to support the RTC driver for Dialog Semiconductor
1045	  DA9052-BC and DA9053-AA/Bx PMICs.
1046
1047config RTC_DRV_DA9055
1048	tristate "Dialog Semiconductor DA9055 RTC"
1049	depends on MFD_DA9055
1050	help
1051	  If you say yes here you will get support for the
1052	  RTC of the Dialog DA9055 PMIC.
1053
1054	  This driver can also be built as a module. If so, the module
1055	  will be called rtc-da9055
1056
1057config RTC_DRV_DA9063
1058	tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1059	depends on MFD_DA9063 || MFD_DA9062
1060	help
1061	  If you say yes here you will get support for the RTC subsystem
1062	  for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1063
1064	  This driver can also be built as a module. If so, the module
1065	  will be called "rtc-da9063".
1066
1067config RTC_DRV_EFI
1068	tristate "EFI RTC"
1069	depends on EFI && !X86
1070	help
1071	  If you say yes here you will get support for the EFI
1072	  Real Time Clock.
1073
1074	  This driver can also be built as a module. If so, the module
1075	  will be called rtc-efi.
1076
1077config RTC_DRV_STK17TA8
1078	tristate "Simtek STK17TA8"
1079	depends on HAS_IOMEM
1080	help
1081	  If you say yes here you get support for the
1082	  Simtek STK17TA8 timekeeping chip.
1083
1084	  This driver can also be built as a module. If so, the module
1085	  will be called rtc-stk17ta8.
1086
1087config RTC_DRV_M48T86
1088	tristate "ST M48T86/Dallas DS12887"
1089	help
1090	  If you say Y here you will get support for the
1091	  ST M48T86 and Dallas DS12887 RTC chips.
1092
1093	  This driver can also be built as a module. If so, the module
1094	  will be called rtc-m48t86.
1095
1096config RTC_DRV_M48T35
1097	tristate "ST M48T35"
1098	depends on HAS_IOMEM
1099	help
1100	  If you say Y here you will get support for the
1101	  ST M48T35 RTC chip.
1102
1103	  This driver can also be built as a module, if so, the module
1104	  will be called "rtc-m48t35".
1105
1106config RTC_DRV_M48T59
1107	tristate "ST M48T59/M48T08/M48T02"
1108	depends on HAS_IOMEM
1109	help
1110	  If you say Y here you will get support for the
1111	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1112
1113	  These chips are usually found in Sun SPARC and UltraSPARC
1114	  workstations.
1115
1116	  This driver can also be built as a module, if so, the module
1117	  will be called "rtc-m48t59".
1118
1119config RTC_DRV_MSM6242
1120	tristate "Oki MSM6242"
1121	depends on HAS_IOMEM
1122	help
1123	  If you say yes here you get support for the Oki MSM6242
1124	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1125
1126	  This driver can also be built as a module. If so, the module
1127	  will be called rtc-msm6242.
1128
1129config RTC_DRV_BQ4802
1130	tristate "TI BQ4802"
1131	depends on HAS_IOMEM
1132	help
1133	  If you say Y here you will get support for the TI
1134	  BQ4802 RTC chip.
1135
1136	  This driver can also be built as a module. If so, the module
1137	  will be called rtc-bq4802.
1138
1139config RTC_DRV_RP5C01
1140	tristate "Ricoh RP5C01"
1141	depends on HAS_IOMEM
1142	help
1143	  If you say yes here you get support for the Ricoh RP5C01
1144	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1145	  and A4000).
1146
1147	  This driver can also be built as a module. If so, the module
1148	  will be called rtc-rp5c01.
1149
1150config RTC_DRV_V3020
1151	tristate "EM Microelectronic V3020"
1152	help
1153	  If you say yes here you will get support for the
1154	  EM Microelectronic v3020 RTC chip.
1155
1156	  This driver can also be built as a module. If so, the module
1157	  will be called rtc-v3020.
1158
1159config RTC_DRV_WM831X
1160	tristate "Wolfson Microelectronics WM831x RTC"
1161	depends on MFD_WM831X
1162	help
1163	  If you say yes here you will get support for the RTC subsystem
1164	  of the Wolfson Microelectronics WM831X series PMICs.
1165
1166	  This driver can also be built as a module. If so, the module
1167	  will be called "rtc-wm831x".
1168
1169config RTC_DRV_WM8350
1170	tristate "Wolfson Microelectronics WM8350 RTC"
1171	depends on MFD_WM8350
1172	help
1173	  If you say yes here you will get support for the RTC subsystem
1174	  of the Wolfson Microelectronics WM8350.
1175
1176	  This driver can also be built as a module. If so, the module
1177	  will be called "rtc-wm8350".
1178
1179config RTC_DRV_SC27XX
1180	tristate "Spreadtrum SC27xx RTC"
1181	depends on MFD_SC27XX_PMIC || COMPILE_TEST
1182	help
1183	  If you say Y here you will get support for the RTC subsystem
1184	  of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs
1185	  includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.
1186
1187	  This driver can also be built as a module. If so, the module
1188	  will be called rtc-sc27xx.
1189
1190config RTC_DRV_SPEAR
1191	tristate "SPEAR ST RTC"
1192	depends on PLAT_SPEAR || COMPILE_TEST
1193	default y
1194	help
1195	 If you say Y here you will get support for the RTC found on
1196	 spear
1197
1198config RTC_DRV_PCF50633
1199	depends on MFD_PCF50633
1200	tristate "NXP PCF50633 RTC"
1201	help
1202	  If you say yes here you get support for the RTC subsystem of the
1203	  NXP PCF50633 used in embedded systems.
1204
1205config RTC_DRV_AB3100
1206	tristate "ST-Ericsson AB3100 RTC"
1207	depends on AB3100_CORE
1208	default y if AB3100_CORE
1209	help
1210	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1211	  support. This chip contains a battery- and capacitor-backed RTC.
1212
1213config RTC_DRV_AB8500
1214	tristate "ST-Ericsson AB8500 RTC"
1215	depends on AB8500_CORE
1216	select RTC_INTF_DEV
1217	select RTC_INTF_DEV_UIE_EMUL
1218	help
1219	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1220	  support. This chip contains a battery- and capacitor-backed RTC.
1221
1222config RTC_DRV_NUC900
1223	tristate "NUC910/NUC920 RTC driver"
1224	depends on ARCH_W90X900 || COMPILE_TEST
1225	help
1226	  If you say yes here you get support for the RTC subsystem of the
1227	  NUC910/NUC920 used in embedded systems.
1228
1229config RTC_DRV_OPAL
1230	tristate "IBM OPAL RTC driver"
1231	depends on PPC_POWERNV
1232	default y
1233	help
1234	  If you say yes here you get support for the PowerNV platform RTC
1235	  driver based on OPAL interfaces.
1236
1237	  This driver can also be built as a module. If so, the module
1238	  will be called rtc-opal.
1239
1240config RTC_DRV_ZYNQMP
1241	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1242	depends on OF
1243	help
1244	  If you say yes here you get support for the RTC controller found on
1245	  Xilinx Zynq Ultrascale+ MPSoC.
1246
1247config RTC_DRV_CROS_EC
1248	tristate "Chrome OS EC RTC driver"
1249	depends on MFD_CROS_EC
1250	help
1251	  If you say yes here you will get support for the
1252	  Chrome OS Embedded Controller's RTC.
1253
1254	  This driver can also be built as a module. If so, the module
1255	  will be called rtc-cros-ec.
1256
1257comment "on-CPU RTC drivers"
1258
1259config RTC_DRV_ASM9260
1260	tristate "Alphascale asm9260 RTC"
1261	depends on MACH_ASM9260 || COMPILE_TEST
1262	help
1263	  If you say yes here you get support for the RTC on the
1264	  Alphascale asm9260 SoC.
1265
1266	  This driver can also be built as a module. If so, the module
1267	  will be called rtc-asm9260.
1268
1269config RTC_DRV_DAVINCI
1270	tristate "TI DaVinci RTC"
1271	depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1272	help
1273	  If you say yes here you get support for the RTC on the
1274	  DaVinci platforms (DM365).
1275
1276	  This driver can also be built as a module. If so, the module
1277	  will be called rtc-davinci.
1278
1279config RTC_DRV_DIGICOLOR
1280	tristate "Conexant Digicolor RTC"
1281	depends on ARCH_DIGICOLOR || COMPILE_TEST
1282	help
1283	  If you say yes here you get support for the RTC on Conexant
1284	  Digicolor platforms. This currently includes the CX92755 SoC.
1285
1286	  This driver can also be built as a module. If so, the module
1287	  will be called rtc-digicolor.
1288
1289config RTC_DRV_IMXDI
1290	tristate "Freescale IMX DryIce Real Time Clock"
1291	depends on ARCH_MXC
1292	help
1293	   Support for Freescale IMX DryIce RTC
1294
1295	   This driver can also be built as a module, if so, the module
1296	   will be called "rtc-imxdi".
1297
1298config RTC_DRV_OMAP
1299	tristate "TI OMAP Real Time Clock"
1300	depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1301	depends on OF
1302	depends on PINCTRL
1303	select GENERIC_PINCONF
1304	help
1305	  Say "yes" here to support the on chip real time clock
1306	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1307
1308	  This driver can also be built as a module, if so, module
1309	  will be called rtc-omap.
1310
1311config HAVE_S3C_RTC
1312	bool
1313	help
1314	  This will include RTC support for Samsung SoCs. If
1315	  you want to include RTC support for any machine, kindly
1316	  select this in the respective mach-XXXX/Kconfig file.
1317
1318config RTC_DRV_S3C
1319	tristate "Samsung S3C series SoC RTC"
1320	depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1321	help
1322	  RTC (Realtime Clock) driver for the clock inbuilt into the
1323	  Samsung S3C24XX series of SoCs. This can provide periodic
1324	  interrupt rates from 1Hz to 64Hz for user programs, and
1325	  wakeup from Alarm.
1326
1327	  The driver currently supports the common features on all the
1328	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1329	  and S3C2442.
1330
1331	  This driver can also be build as a module. If so, the module
1332	  will be called rtc-s3c.
1333
1334config RTC_DRV_EP93XX
1335	tristate "Cirrus Logic EP93XX"
1336	depends on ARCH_EP93XX || COMPILE_TEST
1337	help
1338	  If you say yes here you get support for the
1339	  RTC embedded in the Cirrus Logic EP93XX processors.
1340
1341	  This driver can also be built as a module. If so, the module
1342	  will be called rtc-ep93xx.
1343
1344config RTC_DRV_SA1100
1345	tristate "SA11x0/PXA2xx/PXA910"
1346	depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1347	help
1348	  If you say Y here you will get access to the real time clock
1349	  built into your SA11x0 or PXA2xx CPU.
1350
1351	  To compile this driver as a module, choose M here: the
1352	  module will be called rtc-sa1100.
1353
1354config RTC_DRV_SH
1355	tristate "SuperH On-Chip RTC"
1356	depends on SUPERH || ARCH_RENESAS
1357	help
1358	  Say Y here to enable support for the on-chip RTC found in
1359	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1360
1361	  To compile this driver as a module, choose M here: the
1362	  module will be called rtc-sh.
1363
1364config RTC_DRV_VR41XX
1365	tristate "NEC VR41XX"
1366	depends on CPU_VR41XX || COMPILE_TEST
1367	help
1368	  If you say Y here you will get access to the real time clock
1369	  built into your NEC VR41XX CPU.
1370
1371	  To compile this driver as a module, choose M here: the
1372	  module will be called rtc-vr41xx.
1373
1374config RTC_DRV_PL030
1375	tristate "ARM AMBA PL030 RTC"
1376	depends on ARM_AMBA
1377	help
1378	  If you say Y here you will get access to ARM AMBA
1379	  PrimeCell PL030 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-pl030.
1383
1384config RTC_DRV_PL031
1385	tristate "ARM AMBA PL031 RTC"
1386	depends on ARM_AMBA
1387	help
1388	  If you say Y here you will get access to ARM AMBA
1389	  PrimeCell PL031 RTC found on certain ARM SOCs.
1390
1391	  To compile this driver as a module, choose M here: the
1392	  module will be called rtc-pl031.
1393
1394config RTC_DRV_AT91RM9200
1395	tristate "AT91RM9200 or some AT91SAM9 RTC"
1396	depends on ARCH_AT91 || COMPILE_TEST
1397	help
1398	  Driver for the internal RTC (Realtime Clock) module found on
1399	  Atmel AT91RM9200's and some  AT91SAM9 chips. On AT91SAM9 chips
1400	  this is powered by the backup power supply.
1401
1402config RTC_DRV_AT91SAM9
1403	tristate "AT91SAM9 RTT as RTC"
1404	depends on ARCH_AT91 || COMPILE_TEST
1405	depends on HAS_IOMEM
1406	select MFD_SYSCON
1407	help
1408	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1409	  can be used as an RTC thanks to the backup power supply (e.g. a
1410	  small coin cell battery) which keeps this block and the GPBR
1411	  (General Purpose Backup Registers) block powered when the device
1412	  is shutdown.
1413	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1414	  probably want to use the real RTC block instead of the "RTT as an
1415	  RTC" driver.
1416
1417config RTC_DRV_AU1XXX
1418	tristate "Au1xxx Counter0 RTC support"
1419	depends on MIPS_ALCHEMY
1420	help
1421	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1422	  counter) to be used as a RTC.
1423
1424	  This driver can also be built as a module. If so, the module
1425	  will be called rtc-au1xxx.
1426
1427config RTC_DRV_RS5C313
1428	tristate "Ricoh RS5C313"
1429	depends on SH_LANDISK
1430	help
1431	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1432
1433config RTC_DRV_GENERIC
1434	tristate "Generic RTC support"
1435	# Please consider writing a new RTC driver instead of using the generic
1436	# RTC abstraction
1437	depends on PARISC || M68K || PPC || SUPERH32 || COMPILE_TEST
1438	help
1439	  Say Y or M here to enable RTC support on systems using the generic
1440	  RTC abstraction. If you do not know what you are doing, you should
1441	  just say Y.
1442
1443config RTC_DRV_PXA
1444	tristate "PXA27x/PXA3xx"
1445	depends on ARCH_PXA
1446	select RTC_DRV_SA1100
1447	help
1448         If you say Y here you will get access to the real time clock
1449         built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1450         consisting of an SA1100 compatible RTC and the extended PXA RTC.
1451
1452	 This RTC driver uses PXA RTC registers available since pxa27x
1453	 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1454
1455config RTC_DRV_VT8500
1456	tristate "VIA/WonderMedia 85xx SoC RTC"
1457	depends on ARCH_VT8500 || COMPILE_TEST
1458	help
1459	  If you say Y here you will get access to the real time clock
1460	  built into your VIA VT8500 SoC or its relatives.
1461
1462
1463config RTC_DRV_SUN4V
1464	bool "SUN4V Hypervisor RTC"
1465	depends on SPARC64
1466	help
1467	  If you say Y here you will get support for the Hypervisor
1468	  based RTC on SUN4V systems.
1469
1470config RTC_DRV_SUN6I
1471	bool "Allwinner A31 RTC"
1472	default MACH_SUN6I || MACH_SUN8I
1473	depends on COMMON_CLK
1474	depends on ARCH_SUNXI || COMPILE_TEST
1475	help
1476	  If you say Y here you will get support for the RTC found in
1477	  some Allwinner SoCs like the A31 or the A64.
1478
1479config RTC_DRV_SUNXI
1480	tristate "Allwinner sun4i/sun7i RTC"
1481	depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1482	help
1483	  If you say Y here you will get support for the RTC found on
1484	  Allwinner A10/A20.
1485
1486config RTC_DRV_STARFIRE
1487	bool "Starfire RTC"
1488	depends on SPARC64
1489	help
1490	  If you say Y here you will get support for the RTC found on
1491	  Starfire systems.
1492
1493config RTC_DRV_TX4939
1494	tristate "TX4939 SoC"
1495	depends on SOC_TX4939 || COMPILE_TEST
1496	help
1497	  Driver for the internal RTC (Realtime Clock) module found on
1498	  Toshiba TX4939 SoC.
1499
1500config RTC_DRV_MV
1501	tristate "Marvell SoC RTC"
1502	depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1503	help
1504	  If you say yes here you will get support for the in-chip RTC
1505	  that can be found in some of Marvell's SoC devices, such as
1506	  the Kirkwood 88F6281 and 88F6192.
1507
1508	  This driver can also be built as a module. If so, the module
1509	  will be called rtc-mv.
1510
1511config RTC_DRV_ARMADA38X
1512	tristate "Armada 38x Marvell SoC RTC"
1513	depends on ARCH_MVEBU || COMPILE_TEST
1514	help
1515	  If you say yes here you will get support for the in-chip RTC
1516	  that can be found in the Armada 38x Marvell's SoC device
1517
1518	  This driver can also be built as a module. If so, the module
1519	  will be called armada38x-rtc.
1520
1521config RTC_DRV_FTRTC010
1522	tristate "Faraday Technology FTRTC010 RTC"
1523	depends on HAS_IOMEM
1524	default ARCH_GEMINI
1525	help
1526	  If you say Y here you will get support for the
1527	  Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
1528
1529	  This driver can also be built as a module. If so, the module
1530	  will be called rtc-ftrtc010.
1531
1532config RTC_DRV_PS3
1533	tristate "PS3 RTC"
1534	depends on PPC_PS3
1535	help
1536	  If you say yes here you will get support for the RTC on PS3.
1537
1538	  This driver can also be built as a module. If so, the module
1539	  will be called rtc-ps3.
1540
1541config RTC_DRV_COH901331
1542	tristate "ST-Ericsson COH 901 331 RTC"
1543	depends on ARCH_U300 || COMPILE_TEST
1544	help
1545	  If you say Y here you will get access to ST-Ericsson
1546	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
1547	  Platforms.
1548
1549	  This driver can also be built as a module. If so, the module
1550	  will be called "rtc-coh901331".
1551
1552
1553config RTC_DRV_STMP
1554	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1555	depends on ARCH_MXS || COMPILE_TEST
1556	select STMP_DEVICE
1557	help
1558	  If you say yes here you will get support for the onboard
1559	  STMP3xxx/i.MX23/i.MX28 RTC.
1560
1561	  This driver can also be built as a module. If so, the module
1562	  will be called rtc-stmp3xxx.
1563
1564config RTC_DRV_PCAP
1565	tristate "PCAP RTC"
1566	depends on EZX_PCAP
1567	help
1568	  If you say Y here you will get support for the RTC found on
1569	  the PCAP2 ASIC used on some Motorola phones.
1570
1571config RTC_DRV_MC13XXX
1572	depends on MFD_MC13XXX
1573	tristate "Freescale MC13xxx RTC"
1574	help
1575	  This enables support for the RTCs found on Freescale's PMICs
1576	  MC13783 and MC13892.
1577
1578config RTC_DRV_MPC5121
1579	tristate "Freescale MPC5121 built-in RTC"
1580	depends on PPC_MPC512x || PPC_MPC52xx
1581	help
1582	  If you say yes here you will get support for the
1583	  built-in RTC on MPC5121 or on MPC5200.
1584
1585	  This driver can also be built as a module. If so, the module
1586	  will be called rtc-mpc5121.
1587
1588config RTC_DRV_JZ4740
1589	tristate "Ingenic JZ4740 SoC"
1590	depends on MACH_INGENIC || COMPILE_TEST
1591	help
1592	  If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1593	  controllers.
1594
1595	  This driver can also be built as a module. If so, the module
1596	  will be called rtc-jz4740.
1597
1598config RTC_DRV_LPC24XX
1599	tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1600	depends on ARCH_LPC18XX || COMPILE_TEST
1601	depends on OF && HAS_IOMEM
1602	help
1603	  This enables support for the NXP RTC found which can be found on
1604	  NXP LPC178x/18xx/408x/43xx devices.
1605
1606	  If you have one of the devices above enable this driver to use
1607	  the hardware RTC. This driver can also be built as a module. If
1608	  so, the module will be called rtc-lpc24xx.
1609
1610config RTC_DRV_LPC32XX
1611	depends on ARCH_LPC32XX || COMPILE_TEST
1612	tristate "NXP LPC32XX RTC"
1613	help
1614	  This enables support for the NXP RTC in the LPC32XX
1615
1616	  This driver can also be built as a module. If so, the module
1617	  will be called rtc-lpc32xx.
1618
1619config RTC_DRV_PM8XXX
1620	tristate "Qualcomm PMIC8XXX RTC"
1621	depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1622	help
1623	  If you say yes here you get support for the
1624	  Qualcomm PMIC8XXX RTC.
1625
1626	  To compile this driver as a module, choose M here: the
1627	  module will be called rtc-pm8xxx.
1628
1629config RTC_DRV_TEGRA
1630	tristate "NVIDIA Tegra Internal RTC driver"
1631	depends on ARCH_TEGRA || COMPILE_TEST
1632	help
1633	  If you say yes here you get support for the
1634	  Tegra 200 series internal RTC module.
1635
1636	  This drive can also be built as a module. If so, the module
1637	  will be called rtc-tegra.
1638
1639config RTC_DRV_PUV3
1640	tristate "PKUnity v3 RTC support"
1641	depends on ARCH_PUV3
1642	help
1643	  This enables support for the RTC in the PKUnity-v3 SoCs.
1644
1645	  This drive can also be built as a module. If so, the module
1646	  will be called rtc-puv3.
1647
1648config RTC_DRV_LOONGSON1
1649	tristate "loongson1 RTC support"
1650	depends on MACH_LOONGSON32
1651	help
1652	  This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1653	  counter) to be used as a RTC.
1654
1655	  This driver can also be built as a module. If so, the module
1656	  will be called rtc-ls1x.
1657
1658config RTC_DRV_MXC
1659	tristate "Freescale MXC Real Time Clock"
1660	depends on ARCH_MXC
1661	help
1662	   If you say yes here you get support for the Freescale MXC
1663	   RTC module.
1664
1665	   This driver can also be built as a module, if so, the module
1666	   will be called "rtc-mxc".
1667
1668config RTC_DRV_MXC_V2
1669	tristate "Freescale MXC Real Time Clock for i.MX53"
1670	depends on ARCH_MXC
1671	help
1672	   If you say yes here you get support for the Freescale MXC
1673	   SRTC module in i.MX53 processor.
1674
1675	   This driver can also be built as a module, if so, the module
1676	   will be called "rtc-mxc_v2".
1677
1678config RTC_DRV_SNVS
1679	tristate "Freescale SNVS RTC support"
1680	select REGMAP_MMIO
1681	depends on HAS_IOMEM
1682	depends on OF
1683	help
1684	   If you say yes here you get support for the Freescale SNVS
1685	   Low Power (LP) RTC module.
1686
1687	   This driver can also be built as a module, if so, the module
1688	   will be called "rtc-snvs".
1689
1690config RTC_DRV_SIRFSOC
1691	tristate "SiRFSOC RTC"
1692	depends on ARCH_SIRF
1693	help
1694	  Say "yes" here to support the real time clock on SiRF SOC chips.
1695	  This driver can also be built as a module called rtc-sirfsoc.
1696
1697config RTC_DRV_ST_LPC
1698	tristate "STMicroelectronics LPC RTC"
1699	depends on ARCH_STI
1700	depends on OF
1701	help
1702	  Say Y here to include STMicroelectronics Low Power Controller
1703	  (LPC) based RTC support.
1704
1705	  To compile this driver as a module, choose M here: the
1706	  module will be called rtc-st-lpc.
1707
1708config RTC_DRV_MOXART
1709	tristate "MOXA ART RTC"
1710	depends on ARCH_MOXART || COMPILE_TEST
1711	help
1712	   If you say yes here you get support for the MOXA ART
1713	   RTC module.
1714
1715	   This driver can also be built as a module. If so, the module
1716	   will be called rtc-moxart
1717
1718config RTC_DRV_MT6397
1719	tristate "MediaTek PMIC based RTC"
1720	depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1721	help
1722	  This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
1723	  MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1724	  MediaTek(R) RTC driver.
1725
1726	  If you want to use MediaTek(R) RTC interface, select Y or M here.
1727
1728config RTC_DRV_MT7622
1729	tristate "MediaTek SoC based RTC"
1730	depends on ARCH_MEDIATEK || COMPILE_TEST
1731	help
1732	  This enables support for the real time clock built in the MediaTek
1733	  SoCs.
1734
1735	  This drive can also be built as a module. If so, the module
1736	  will be called rtc-mt7622.
1737
1738config RTC_DRV_XGENE
1739	tristate "APM X-Gene RTC"
1740	depends on HAS_IOMEM
1741	depends on ARCH_XGENE || COMPILE_TEST
1742	help
1743	  If you say yes here you get support for the APM X-Gene SoC real time
1744	  clock.
1745
1746	  This driver can also be built as a module, if so, the module
1747	  will be called "rtc-xgene".
1748
1749config RTC_DRV_PIC32
1750	tristate "Microchip PIC32 RTC"
1751	depends on MACH_PIC32
1752	default y
1753	help
1754	   If you say yes here you get support for the PIC32 RTC module.
1755
1756	   This driver can also be built as a module. If so, the module
1757	   will be called rtc-pic32
1758
1759config RTC_DRV_R7301
1760	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1761	select REGMAP_MMIO
1762	depends on OF && HAS_IOMEM
1763	help
1764	   If you say yes here you get support for the EPSON TOYOCOM
1765	   RTC-7301SF/DG chips.
1766
1767	   This driver can also be built as a module. If so, the module
1768	   will be called rtc-r7301.
1769
1770config RTC_DRV_STM32
1771	tristate "STM32 RTC"
1772	select REGMAP_MMIO
1773	depends on ARCH_STM32 || COMPILE_TEST
1774	help
1775	   If you say yes here you get support for the STM32 On-Chip
1776	   Real Time Clock.
1777
1778	   This driver can also be built as a module, if so, the module
1779	   will be called "rtc-stm32".
1780
1781config RTC_DRV_CPCAP
1782	depends on MFD_CPCAP
1783	tristate "Motorola CPCAP RTC"
1784	help
1785	   Say y here for CPCAP rtc found on some Motorola phones
1786	   and tablets such as Droid 4.
1787
1788config RTC_DRV_RTD119X
1789	bool "Realtek RTD129x RTC"
1790	depends on ARCH_REALTEK || COMPILE_TEST
1791	default ARCH_REALTEK
1792	help
1793	  If you say yes here, you get support for the RTD1295 SoC
1794	  Real Time Clock.
1795
1796comment "HID Sensor RTC drivers"
1797
1798config RTC_DRV_HID_SENSOR_TIME
1799	tristate "HID Sensor Time"
1800	depends on USB_HID
1801	select IIO
1802	select HID_SENSOR_HUB
1803	select HID_SENSOR_IIO_COMMON
1804	help
1805	  Say yes here to build support for the HID Sensors of type Time.
1806	  This drivers makes such sensors available as RTCs.
1807
1808	  If this driver is compiled as a module, it will be named
1809	  rtc-hid-sensor-time.
1810
1811config RTC_DRV_GOLDFISH
1812	tristate "Goldfish Real Time Clock"
1813	depends on MIPS && (GOLDFISH || COMPILE_TEST)
1814	help
1815	  Say yes to enable RTC driver for the Goldfish based virtual platform.
1816
1817	  Goldfish is a code name for the virtual platform developed by Google
1818	  for Android emulation.
1819
1820endif # RTC_CLASS
1821