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1# SPDX-License-Identifier: GPL-2.0-only
2#
3# RTC class/drivers configuration
4#
5
6config RTC_LIB
7	bool
8
9config RTC_MC146818_LIB
10	bool
11	select RTC_LIB
12
13menuconfig RTC_CLASS
14	bool "Real Time Clock"
15	default n
16	depends on !S390 && !UML
17	select RTC_LIB
18	help
19	  Generic RTC class support. If you say yes here, you will
20	  be allowed to plug one or more RTCs to your system. You will
21	  probably want to enable one or more of the interfaces below.
22
23if RTC_CLASS
24
25config RTC_HCTOSYS
26	bool "Set system time from RTC on startup and resume"
27	default y
28	help
29	  If you say yes here, the system time (wall clock) will be set using
30	  the value read from a specified RTC device. This is useful to avoid
31	  unnecessary fsck runs at boot time, and to network better.
32
33config RTC_HCTOSYS_DEVICE
34	string "RTC used to set the system time"
35	depends on RTC_HCTOSYS
36	default "rtc0"
37	help
38	  The RTC device that will be used to (re)initialize the system
39	  clock, usually rtc0. Initialization is done when the system
40	  starts up, and when it resumes from a low power state. This
41	  device should record time in UTC, since the kernel won't do
42	  timezone correction.
43
44	  This clock should be battery-backed, so that it reads the correct
45	  time when the system boots from a power-off state. Otherwise, your
46	  system will need an external clock source (like an NTP server).
47
48	  If the clock you specify here is not battery backed, it may still
49	  be useful to reinitialize system time when resuming from system
50	  sleep states. Do not specify an RTC here unless it stays powered
51	  during all this system's supported sleep states.
52
53config RTC_SYSTOHC
54	bool "Set the RTC time based on NTP synchronization"
55	default y
56	help
57	  If you say yes here, the system time (wall clock) will be stored
58	  in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
59	  minutes if userspace reports synchronized NTP status.
60
61config RTC_SYSTOHC_DEVICE
62	string "RTC used to synchronize NTP adjustment"
63	depends on RTC_SYSTOHC
64	default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
65	default "rtc0"
66	help
67	  The RTC device used for NTP synchronization. The main difference
68	  between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this
69	  one can sleep when setting time, because it runs in the workqueue
70	  context.
71
72config RTC_DEBUG
73	bool "RTC debug support"
74	help
75	  Say yes here to enable debugging support in the RTC framework
76	  and individual RTC drivers.
77
78config RTC_NVMEM
79	bool "RTC non volatile storage support"
80	select NVMEM
81	default RTC_CLASS
82	help
83	  Say yes here to add support for the non volatile (often battery
84	  backed) storage present on RTCs.
85
86comment "RTC interfaces"
87
88config RTC_INTF_SYSFS
89	bool "/sys/class/rtc/rtcN (sysfs)"
90	depends on SYSFS
91	default RTC_CLASS
92	help
93	  Say yes here if you want to use your RTCs using sysfs interfaces,
94	  /sys/class/rtc/rtc0 through /sys/.../rtcN.
95
96	  If unsure, say Y.
97
98config RTC_INTF_PROC
99	bool "/proc/driver/rtc (procfs for rtcN)"
100	depends on PROC_FS
101	default RTC_CLASS
102	help
103	  Say yes here if you want to use your system clock RTC through
104	  the proc interface, /proc/driver/rtc.
105	  Other RTCs will not be available through that API.
106	  If there is no RTC for the system clock, then the first RTC(rtc0)
107	  is used by default.
108
109	  If unsure, say Y.
110
111config RTC_INTF_DEV
112	bool "/dev/rtcN (character devices)"
113	default RTC_CLASS
114	help
115	  Say yes here if you want to use your RTCs using the /dev
116	  interfaces, which "udev" sets up as /dev/rtc0 through
117	  /dev/rtcN.
118
119	  You may want to set up a symbolic link so one of these
120	  can be accessed as /dev/rtc, which is a name
121	  expected by "hwclock" and some other programs. Recent
122	  versions of "udev" are known to set up the symlink for you.
123
124	  If unsure, say Y.
125
126config RTC_INTF_DEV_UIE_EMUL
127	bool "RTC UIE emulation on dev interface"
128	depends on RTC_INTF_DEV
129	help
130	  Provides an emulation for RTC_UIE if the underlying rtc chip
131	  driver does not expose RTC_UIE ioctls. Those requests generate
132	  once-per-second update interrupts, used for synchronization.
133
134	  The emulation code will read the time from the hardware
135	  clock several times per second, please enable this option
136	  only if you know that you really need it.
137
138config RTC_DRV_TEST
139	tristate "Test driver/device"
140	help
141	  If you say yes here you get support for the
142	  RTC test driver. It's a software RTC which can be
143	  used to test the RTC subsystem APIs. It gets
144	  the time from the system clock.
145	  You want this driver only if you are doing development
146	  on the RTC subsystem. Please read the source code
147	  for further details.
148
149	  This driver can also be built as a module. If so, the module
150	  will be called rtc-test.
151
152comment "I2C RTC drivers"
153
154if I2C
155
156config RTC_DRV_88PM860X
157	tristate "Marvell 88PM860x"
158	depends on MFD_88PM860X
159	help
160	  If you say yes here you get support for RTC function in Marvell
161	  88PM860x chips.
162
163	  This driver can also be built as a module. If so, the module
164	  will be called rtc-88pm860x.
165
166config RTC_DRV_88PM80X
167	tristate "Marvell 88PM80x"
168	depends on MFD_88PM800
169	help
170	  If you say yes here you get support for RTC function in Marvell
171	  88PM80x chips.
172
173	  This driver can also be built as a module. If so, the module
174	  will be called rtc-88pm80x.
175
176config RTC_DRV_ABB5ZES3
177	select REGMAP_I2C
178	tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
179	help
180	  If you say yes here you get support for the Abracon
181	  AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
182
183	  This driver can also be built as a module. If so, the module
184	  will be called rtc-ab-b5ze-s3.
185
186config RTC_DRV_ABEOZ9
187	select REGMAP_I2C
188	tristate "Abracon AB-RTCMC-32.768kHz-EOZ9"
189	help
190	  If you say yes here you get support for the Abracon
191	  AB-RTCMC-32.768kHz-EOA9 I2C RTC chip.
192
193	  This driver can also be built as a module. If so, the module
194	  will be called rtc-ab-e0z9.
195
196config RTC_DRV_ABX80X
197	tristate "Abracon ABx80x"
198	select WATCHDOG_CORE if WATCHDOG
199	help
200	  If you say yes here you get support for Abracon AB080X and AB180X
201	  families of ultra-low-power  battery- and capacitor-backed real-time
202	  clock chips.
203
204	  This driver can also be built as a module. If so, the module
205	  will be called rtc-abx80x.
206
207config RTC_DRV_AC100
208	tristate "X-Powers AC100"
209	depends on MFD_AC100
210	help
211	  If you say yes here you get support for the real-time clock found
212	  in X-Powers AC100 family peripheral ICs.
213
214	  This driver can also be built as a module. If so, the module
215	  will be called rtc-ac100.
216
217config RTC_DRV_BRCMSTB
218	tristate "Broadcom STB wake-timer"
219	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
220	default ARCH_BRCMSTB || BMIPS_GENERIC
221	help
222	  If you say yes here you get support for the wake-timer found on
223	  Broadcom STB SoCs (BCM7xxx).
224
225	  This driver can also be built as a module. If so, the module will
226	  be called rtc-brcmstb-waketimer.
227
228config RTC_DRV_AS3722
229	tristate "ams AS3722 RTC driver"
230	depends on MFD_AS3722
231	help
232	  If you say yes here you get support for the RTC of ams AS3722 PMIC
233	  chips.
234
235	  This driver can also be built as a module. If so, the module
236	  will be called rtc-as3722.
237
238config RTC_DRV_DS1307
239	tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
240	select REGMAP_I2C
241	select WATCHDOG_CORE if WATCHDOG
242	help
243	  If you say yes here you get support for various compatible RTC
244	  chips (often with battery backup) connected with I2C. This driver
245	  should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341,
246	  ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
247	  In some cases the RTC must already have been initialized (by
248	  manufacturing or a bootloader).
249
250	  The first seven registers on these chips hold an RTC, and other
251	  registers may add features such as NVRAM, a trickle charger for
252	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
253	  sysfs, but other chip features may not be available.
254
255	  This driver can also be built as a module. If so, the module
256	  will be called rtc-ds1307.
257
258config RTC_DRV_DS1307_CENTURY
259	bool "Century bit support for rtc-ds1307"
260	depends on RTC_DRV_DS1307
261	default n
262	help
263	  The DS1307 driver suffered from a bug where it was enabling the
264	  century bit inconditionnally but never used it when reading the time.
265	  It made the driver unable to support dates beyond 2099.
266	  Setting this option will add proper support for the century bit but if
267	  the time was previously set using a kernel predating this option,
268	  reading the date will return a date in the next century.
269	  To solve that, you could boot a kernel without this option set, set
270	  the RTC date and then boot a kernel with this option set.
271
272config RTC_DRV_DS1374
273	tristate "Dallas/Maxim DS1374"
274	help
275	  If you say yes here you get support for Dallas Semiconductor
276	  DS1374 real-time clock chips. If an interrupt is associated
277	  with the device, the alarm functionality is supported.
278
279	  This driver can also be built as a module. If so, the module
280	  will be called rtc-ds1374.
281
282config RTC_DRV_DS1374_WDT
283	bool "Dallas/Maxim DS1374 watchdog timer"
284	depends on RTC_DRV_DS1374 && WATCHDOG
285	select WATCHDOG_CORE
286	help
287	  If you say Y here you will get support for the
288	  watchdog timer in the Dallas Semiconductor DS1374
289	  real-time clock chips.
290
291config RTC_DRV_DS1672
292	tristate "Dallas/Maxim DS1672"
293	help
294	  If you say yes here you get support for the
295	  Dallas/Maxim DS1672 timekeeping chip.
296
297	  This driver can also be built as a module. If so, the module
298	  will be called rtc-ds1672.
299
300config RTC_DRV_HYM8563
301	tristate "Haoyu Microelectronics HYM8563"
302	depends on OF
303	help
304	  Say Y to enable support for the HYM8563 I2C RTC chip. Apart
305	  from the usual rtc functions it provides a clock output of
306	  up to 32kHz.
307
308	  This driver can also be built as a module. If so, the module
309	  will be called rtc-hym8563.
310
311config RTC_DRV_LP8788
312	tristate "TI LP8788 RTC driver"
313	depends on MFD_LP8788
314	help
315	  Say Y to enable support for the LP8788 RTC/ALARM driver.
316
317config RTC_DRV_MAX6900
318	tristate "Maxim MAX6900"
319	help
320	  If you say yes here you will get support for the
321	  Maxim MAX6900 I2C RTC chip.
322
323	  This driver can also be built as a module. If so, the module
324	  will be called rtc-max6900.
325
326config RTC_DRV_MAX8907
327	tristate "Maxim MAX8907"
328	depends on MFD_MAX8907 || COMPILE_TEST
329	select REGMAP_IRQ
330	help
331	  If you say yes here you will get support for the
332	  RTC of Maxim MAX8907 PMIC.
333
334	  This driver can also be built as a module. If so, the module
335	  will be called rtc-max8907.
336
337config RTC_DRV_MAX8925
338	tristate "Maxim MAX8925"
339	depends on MFD_MAX8925
340	help
341	  If you say yes here you will get support for the
342	  RTC of Maxim MAX8925 PMIC.
343
344	  This driver can also be built as a module. If so, the module
345	  will be called rtc-max8925.
346
347config RTC_DRV_MAX8998
348	tristate "Maxim MAX8998"
349	depends on MFD_MAX8998
350	help
351	  If you say yes here you will get support for the
352	  RTC of Maxim MAX8998 PMIC.
353
354	  This driver can also be built as a module. If so, the module
355	  will be called rtc-max8998.
356
357config RTC_DRV_MAX8997
358	tristate "Maxim MAX8997"
359	depends on MFD_MAX8997
360	help
361	  If you say yes here you will get support for the
362	  RTC of Maxim MAX8997 PMIC.
363
364	  This driver can also be built as a module. If so, the module
365	  will be called rtc-max8997.
366
367config RTC_DRV_MAX77686
368	tristate "Maxim MAX77686"
369	depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
370	help
371	  If you say yes here you will get support for the
372	  RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
373
374	  This driver can also be built as a module. If so, the module
375	  will be called rtc-max77686.
376
377config RTC_DRV_RK808
378	tristate "Rockchip RK805/RK808/RK809/RK817/RK818 RTC"
379	depends on MFD_RK808
380	help
381	  If you say yes here you will get support for the
382	  RTC of RK805, RK809 and RK817, RK808 and RK818 PMIC.
383
384	  This driver can also be built as a module. If so, the module
385	  will be called rk808-rtc.
386
387config RTC_DRV_RS5C372
388	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
389	help
390	  If you say yes here you get support for the
391	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
392
393	  This driver can also be built as a module. If so, the module
394	  will be called rtc-rs5c372.
395
396config RTC_DRV_ISL1208
397	tristate "Intersil ISL1208"
398	help
399	  If you say yes here you get support for the
400	  Intersil ISL1208 RTC chip.
401
402	  This driver can also be built as a module. If so, the module
403	  will be called rtc-isl1208.
404
405config RTC_DRV_ISL12022
406	tristate "Intersil ISL12022"
407	help
408	  If you say yes here you get support for the
409	  Intersil ISL12022 RTC chip.
410
411	  This driver can also be built as a module. If so, the module
412	  will be called rtc-isl12022.
413
414config RTC_DRV_ISL12026
415	tristate "Intersil ISL12026"
416	depends on OF || COMPILE_TEST
417	help
418	  If you say yes here you get support for the
419	  Intersil ISL12026 RTC chip.
420
421	  This driver can also be built as a module. If so, the module
422	  will be called rtc-isl12026.
423
424config RTC_DRV_X1205
425	tristate "Xicor/Intersil X1205"
426	help
427	  If you say yes here you get support for the
428	  Xicor/Intersil X1205 RTC chip.
429
430	  This driver can also be built as a module. If so, the module
431	  will be called rtc-x1205.
432
433config RTC_DRV_PCF8523
434	tristate "NXP PCF8523"
435	help
436	  If you say yes here you get support for the NXP PCF8523 RTC
437	  chips.
438
439	  This driver can also be built as a module. If so, the module
440	  will be called rtc-pcf8523.
441
442config RTC_DRV_PCF85063
443	tristate "NXP PCF85063"
444	select REGMAP_I2C
445	help
446	  If you say yes here you get support for the PCF85063 RTC chip
447
448	  This driver can also be built as a module. If so, the module
449	  will be called rtc-pcf85063.
450
451config RTC_DRV_PCF85363
452	tristate "NXP PCF85363"
453	select REGMAP_I2C
454	help
455	  If you say yes here you get support for the PCF85363 RTC chip.
456
457	  This driver can also be built as a module. If so, the module
458	  will be called rtc-pcf85363.
459
460	  The nvmem interface will be named pcf85363-#, where # is the
461	  zero-based instance number.
462
463config RTC_DRV_PCF8563
464	tristate "Philips PCF8563/Epson RTC8564"
465	help
466	  If you say yes here you get support for the
467	  Philips PCF8563 RTC chip. The Epson RTC8564
468	  should work as well.
469
470	  This driver can also be built as a module. If so, the module
471	  will be called rtc-pcf8563.
472
473config RTC_DRV_PCF8583
474	tristate "Philips PCF8583"
475	help
476	  If you say yes here you get support for the Philips PCF8583
477	  RTC chip found on Acorn RiscPCs. This driver supports the
478	  platform specific method of retrieving the current year from
479	  the RTC's SRAM. It will work on other platforms with the same
480	  chip, but the year will probably have to be tweaked.
481
482	  This driver can also be built as a module. If so, the module
483	  will be called rtc-pcf8583.
484
485config RTC_DRV_M41T80
486	tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
487	help
488	  If you say Y here you will get support for the ST M41T60
489	  and M41T80 RTC chips series. Currently, the following chips are
490	  supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
491	  M41ST85, M41ST87, and MicroCrystal RV4162.
492
493	  This driver can also be built as a module. If so, the module
494	  will be called rtc-m41t80.
495
496config RTC_DRV_M41T80_WDT
497	bool "ST M41T65/M41T80 series RTC watchdog timer"
498	depends on RTC_DRV_M41T80
499	help
500	  If you say Y here you will get support for the
501	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
502
503config RTC_DRV_BD70528
504	tristate "ROHM BD70528 PMIC RTC"
505	depends on MFD_ROHM_BD70528 && (BD70528_WATCHDOG || !BD70528_WATCHDOG)
506	help
507	  If you say Y here you will get support for the RTC
508	  block on ROHM BD70528 and BD71828 Power Management IC.
509
510	  This driver can also be built as a module. If so, the module
511	  will be called rtc-bd70528.
512
513config RTC_DRV_BQ32K
514	tristate "TI BQ32000"
515	help
516	  If you say Y here you will get support for the TI
517	  BQ32000 I2C RTC chip.
518
519	  This driver can also be built as a module. If so, the module
520	  will be called rtc-bq32k.
521
522config RTC_DRV_DM355EVM
523	tristate "TI DaVinci DM355 EVM RTC"
524	depends on MFD_DM355EVM_MSP
525	help
526	  Supports the RTC firmware in the MSP430 on the DM355 EVM.
527
528config RTC_DRV_TWL92330
529	bool "TI TWL92330/Menelaus"
530	depends on MENELAUS
531	help
532	  If you say yes here you get support for the RTC on the
533	  TWL92330 "Menelaus" power management chip, used with OMAP2
534	  platforms. The support is integrated with the rest of
535	  the Menelaus driver; it's not separate module.
536
537config RTC_DRV_TWL4030
538	tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
539	depends on TWL4030_CORE
540	depends on OF
541	help
542	  If you say yes here you get support for the RTC on the
543	  TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
544
545	  This driver can also be built as a module. If so, the module
546	  will be called rtc-twl.
547
548config RTC_DRV_PALMAS
549	tristate "TI Palmas RTC driver"
550	depends on MFD_PALMAS
551	help
552	  If you say yes here you get support for the RTC of TI PALMA series PMIC
553	  chips.
554
555	  This driver can also be built as a module. If so, the module
556	  will be called rtc-palma.
557
558config RTC_DRV_TPS6586X
559	tristate "TI TPS6586X RTC driver"
560	depends on MFD_TPS6586X
561	help
562	  TI Power Management IC TPS6586X supports RTC functionality
563	  along with alarm. This driver supports the RTC driver for
564	  the TPS6586X RTC module.
565
566config RTC_DRV_TPS65910
567	tristate "TI TPS65910 RTC driver"
568	depends on MFD_TPS65910
569	help
570	  If you say yes here you get support for the RTC on the
571	  TPS65910 chips.
572
573	  This driver can also be built as a module. If so, the module
574	  will be called rtc-tps65910.
575
576config RTC_DRV_TPS80031
577	tristate "TI TPS80031/TPS80032 RTC driver"
578	depends on MFD_TPS80031
579	help
580	  TI Power Management IC TPS80031 supports RTC functionality
581	  along with alarm. This driver supports the RTC driver for
582	  the TPS80031 RTC module.
583
584config RTC_DRV_RC5T583
585	tristate "RICOH 5T583 RTC driver"
586	depends on MFD_RC5T583
587	help
588	  If you say yes here you get support for the RTC on the
589	  RICOH 5T583 chips.
590
591	  This driver can also be built as a module. If so, the module
592	  will be called rtc-rc5t583.
593
594config RTC_DRV_RC5T619
595	tristate "RICOH RC5T619 RTC driver"
596	depends on MFD_RN5T618
597	help
598	  If you say yes here you get support for the RTC on the
599	  RICOH RC5T619 chips.
600
601	  This driver can also be built as a module. If so, the module
602	  will be called rtc-rc5t619.
603
604config RTC_DRV_S35390A
605	tristate "Seiko Instruments S-35390A"
606	select BITREVERSE
607	help
608	  If you say yes here you will get support for the Seiko
609	  Instruments S-35390A.
610
611	  This driver can also be built as a module. If so the module
612	  will be called rtc-s35390a.
613
614config RTC_DRV_FM3130
615	tristate "Ramtron FM3130"
616	help
617	  If you say Y here you will get support for the
618	  Ramtron FM3130 RTC chips.
619	  Ramtron FM3130 is a chip with two separate devices inside,
620	  RTC clock and FRAM. This driver provides only RTC functionality.
621
622	  This driver can also be built as a module. If so the module
623	  will be called rtc-fm3130.
624
625config RTC_DRV_RX8010
626	tristate "Epson RX8010SJ"
627	select REGMAP_I2C
628	help
629	  If you say yes here you get support for the Epson RX8010SJ RTC
630	  chip.
631
632	  This driver can also be built as a module. If so, the module
633	  will be called rtc-rx8010.
634
635config RTC_DRV_RX8581
636	tristate "Epson RX-8571/RX-8581"
637	select REGMAP_I2C
638	help
639	  If you say yes here you will get support for the Epson RX-8571/
640	  RX-8581.
641
642	  This driver can also be built as a module. If so the module
643	  will be called rtc-rx8581.
644
645config RTC_DRV_RX8025
646	tristate "Epson RX-8025SA/NB"
647	help
648	  If you say yes here you get support for the Epson
649	  RX-8025SA/NB RTC chips.
650
651	  This driver can also be built as a module. If so, the module
652	  will be called rtc-rx8025.
653
654config RTC_DRV_EM3027
655	tristate "EM Microelectronic EM3027"
656	help
657	  If you say yes here you get support for the EM
658	  Microelectronic EM3027 RTC chips.
659
660	  This driver can also be built as a module. If so, the module
661	  will be called rtc-em3027.
662
663config RTC_DRV_RV3028
664	tristate "Micro Crystal RV3028"
665	select REGMAP_I2C
666	help
667	  If you say yes here you get support for the Micro Crystal
668	  RV3028.
669
670	  This driver can also be built as a module. If so, the module
671	  will be called rtc-rv3028.
672
673config RTC_DRV_RV3032
674	tristate "Micro Crystal RV3032"
675	select REGMAP_I2C
676	help
677	  If you say yes here you get support for the Micro Crystal
678	  RV3032.
679
680	  This driver can also be built as a module. If so, the module
681	  will be called rtc-rv3032.
682
683config RTC_DRV_RV8803
684	tristate "Micro Crystal RV8803, Epson RX8900"
685	help
686	  If you say yes here you get support for the Micro Crystal RV8803 and
687	  Epson RX8900 RTC chips.
688
689	  This driver can also be built as a module. If so, the module
690	  will be called rtc-rv8803.
691
692config RTC_DRV_S5M
693	tristate "Samsung S2M/S5M series"
694	depends on MFD_SEC_CORE || COMPILE_TEST
695	select REGMAP_IRQ
696	select REGMAP_I2C
697	help
698	  If you say yes here you will get support for the
699	  RTC of Samsung S2MPS14 and S5M PMIC series.
700
701	  This driver can also be built as a module. If so, the module
702	  will be called rtc-s5m.
703
704config RTC_DRV_SD3078
705	tristate "ZXW Shenzhen whwave SD3078"
706	select REGMAP_I2C
707	help
708	  If you say yes here you get support for the ZXW Shenzhen whwave
709	  SD3078 RTC chips.
710
711	  This driver can also be built as a module. If so, the module
712	  will be called rtc-sd3078
713
714endif # I2C
715
716comment "SPI RTC drivers"
717
718if SPI_MASTER
719
720config RTC_DRV_M41T93
721	tristate "ST M41T93"
722	help
723	  If you say yes here you will get support for the
724	  ST M41T93 SPI RTC chip.
725
726	  This driver can also be built as a module. If so, the module
727	  will be called rtc-m41t93.
728
729config RTC_DRV_M41T94
730	tristate "ST M41T94"
731	help
732	  If you say yes here you will get support for the
733	  ST M41T94 SPI RTC chip.
734
735	  This driver can also be built as a module. If so, the module
736	  will be called rtc-m41t94.
737
738config RTC_DRV_DS1302
739	tristate "Dallas/Maxim DS1302"
740	depends on SPI
741	help
742	  If you say yes here you get support for the Dallas DS1302 RTC chips.
743
744	  This driver can also be built as a module. If so, the module
745	  will be called rtc-ds1302.
746
747config RTC_DRV_DS1305
748	tristate "Dallas/Maxim DS1305/DS1306"
749	help
750	  Select this driver to get support for the Dallas/Maxim DS1305
751	  and DS1306 real time clock chips. These support a trickle
752	  charger, alarms, and NVRAM in addition to the clock.
753
754	  This driver can also be built as a module. If so, the module
755	  will be called rtc-ds1305.
756
757config RTC_DRV_DS1343
758	select REGMAP_SPI
759	tristate "Dallas/Maxim DS1343/DS1344"
760	help
761	  If you say yes here you get support for the
762	  Dallas/Maxim DS1343 and DS1344 real time clock chips.
763	  Support for trickle charger, alarm is provided.
764
765	  This driver can also be built as a module. If so, the module
766	  will be called rtc-ds1343.
767
768config RTC_DRV_DS1347
769	select REGMAP_SPI
770	tristate "Dallas/Maxim DS1347"
771	help
772	  If you say yes here you get support for the
773	  Dallas/Maxim DS1347 chips.
774
775	  This driver only supports the RTC feature, and not other chip
776	  features such as alarms.
777
778	  This driver can also be built as a module. If so, the module
779	  will be called rtc-ds1347.
780
781config RTC_DRV_DS1390
782	tristate "Dallas/Maxim DS1390/93/94"
783	help
784	  If you say yes here you get support for the
785	  Dallas/Maxim DS1390/93/94 chips.
786
787	  This driver supports the RTC feature and trickle charging but not
788	  other chip features such as alarms.
789
790	  This driver can also be built as a module. If so, the module
791	  will be called rtc-ds1390.
792
793config RTC_DRV_MAX6916
794	tristate "Maxim MAX6916"
795	help
796	  If you say yes here you will get support for the
797	  Maxim MAX6916 SPI RTC chip.
798
799	  This driver only supports the RTC feature, and not other chip
800	  features such as alarms.
801
802	  This driver can also be built as a module. If so, the module
803	  will be called rtc-max6916.
804
805config RTC_DRV_R9701
806	tristate "Epson RTC-9701JE"
807	help
808	  If you say yes here you will get support for the
809	  Epson RTC-9701JE SPI RTC chip.
810
811	  This driver can also be built as a module. If so, the module
812	  will be called rtc-r9701.
813
814config RTC_DRV_RX4581
815	tristate "Epson RX-4581"
816	help
817	  If you say yes here you will get support for the Epson RX-4581.
818
819	  This driver can also be built as a module. If so the module
820	  will be called rtc-rx4581.
821
822config RTC_DRV_RX6110
823	tristate "Epson RX-6110"
824	select REGMAP_SPI
825	help
826	  If you say yes here you will get support for the Epson RX-6610.
827
828	  This driver can also be built as a module. If so the module
829	  will be called rtc-rx6110.
830
831config RTC_DRV_RS5C348
832	tristate "Ricoh RS5C348A/B"
833	help
834	  If you say yes here you get support for the
835	  Ricoh RS5C348A and RS5C348B RTC chips.
836
837	  This driver can also be built as a module. If so, the module
838	  will be called rtc-rs5c348.
839
840config RTC_DRV_MAX6902
841	tristate "Maxim MAX6902"
842	help
843	  If you say yes here you will get support for the
844	  Maxim MAX6902 SPI RTC chip.
845
846	  This driver can also be built as a module. If so, the module
847	  will be called rtc-max6902.
848
849config RTC_DRV_PCF2123
850	tristate "NXP PCF2123"
851	select REGMAP_SPI
852	help
853	  If you say yes here you get support for the NXP PCF2123
854	  RTC chip.
855
856	  This driver can also be built as a module. If so, the module
857	  will be called rtc-pcf2123.
858
859config RTC_DRV_MCP795
860	tristate "Microchip MCP795"
861	help
862	  If you say yes here you will get support for the Microchip MCP795.
863
864	  This driver can also be built as a module. If so the module
865	  will be called rtc-mcp795.
866
867endif # SPI_MASTER
868
869#
870# Helper to resolve issues with configs that have SPI enabled but I2C
871# modular.  See SND_SOC_I2C_AND_SPI for more information
872#
873config RTC_I2C_AND_SPI
874	tristate
875	default m if I2C=m
876	default y if I2C=y
877	default y if SPI_MASTER=y
878
879comment "SPI and I2C RTC drivers"
880
881config RTC_DRV_DS3232
882	tristate "Dallas/Maxim DS3232/DS3234"
883	depends on RTC_I2C_AND_SPI
884	select REGMAP_I2C if I2C
885	select REGMAP_SPI if SPI_MASTER
886	help
887	  If you say yes here you get support for Dallas Semiconductor
888	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
889	  with the device, the alarm functionality is supported.
890
891	  This driver can also be built as a module.  If so, the module
892	  will be called rtc-ds3232.
893
894config RTC_DRV_DS3232_HWMON
895	bool "HWMON support for Dallas/Maxim DS3232/DS3234"
896	depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
897	default y
898	help
899	  Say Y here if you want to expose temperature sensor data on
900	  rtc-ds3232
901
902config RTC_DRV_PCF2127
903	tristate "NXP PCF2127"
904	depends on RTC_I2C_AND_SPI
905	select REGMAP_I2C if I2C
906	select REGMAP_SPI if SPI_MASTER
907	select WATCHDOG_CORE if WATCHDOG
908	help
909	  If you say yes here you get support for the NXP PCF2127/29 RTC
910	  chips with integrated quartz crystal for industrial applications.
911	  Both chips also have watchdog timer and tamper switch detection
912	  features.
913
914	  PCF2127 has an additional feature of 512 bytes battery backed
915	  memory that's accessible using nvmem interface.
916
917	  This driver can also be built as a module. If so, the module
918	  will be called rtc-pcf2127.
919
920config RTC_DRV_RV3029C2
921	tristate "Micro Crystal RV3029/3049"
922	depends on RTC_I2C_AND_SPI
923	select REGMAP_I2C if I2C
924	select REGMAP_SPI if SPI_MASTER
925	help
926	  If you say yes here you get support for the Micro Crystal
927	  RV3029 and RV3049 RTC chips.
928
929	  This driver can also be built as a module. If so, the module
930	  will be called rtc-rv3029c2.
931
932config RTC_DRV_RV3029_HWMON
933	bool "HWMON support for RV3029/3049"
934	depends on RTC_DRV_RV3029C2 && HWMON
935	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
936	default y
937	help
938	  Say Y here if you want to expose temperature sensor data on
939	  rtc-rv3029.
940
941comment "Platform RTC drivers"
942
943# this 'CMOS' RTC driver is arch dependent because it requires
944# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
945# global rtc_lock ... it's not yet just another platform_device.
946
947config RTC_DRV_CMOS
948	tristate "PC-style 'CMOS'"
949	depends on X86 || ARM || PPC || MIPS || SPARC64
950	default y if X86
951	select RTC_MC146818_LIB
952	help
953	  Say "yes" here to get direct support for the real time clock
954	  found in every PC or ACPI-based system, and some other boards.
955	  Specifically the original MC146818, compatibles like those in
956	  PC south bridges, the DS12887 or M48T86, some multifunction
957	  or LPC bus chips, and so on.
958
959	  Your system will need to define the platform device used by
960	  this driver, otherwise it won't be accessible. This means
961	  you can safely enable this driver if you don't know whether
962	  or not your board has this kind of hardware.
963
964	  This driver can also be built as a module. If so, the module
965	  will be called rtc-cmos.
966
967config RTC_DRV_ALPHA
968	bool "Alpha PC-style CMOS"
969	depends on ALPHA
970	select RTC_MC146818_LIB
971	default y
972	help
973	  Direct support for the real-time clock found on every Alpha
974	  system, specifically MC146818 compatibles.  If in doubt, say Y.
975
976config RTC_DRV_VRTC
977	tristate "Virtual RTC for Intel MID platforms"
978	depends on X86_INTEL_MID
979	default y if X86_INTEL_MID
980
981	help
982	Say "yes" here to get direct support for the real time clock
983	found on Moorestown platforms. The VRTC is a emulated RTC that
984	derives its clock source from a real RTC in the PMIC. The MC146818
985	style programming interface is mostly conserved, but any
986	updates are done via IPC calls to the system controller FW.
987
988config RTC_DRV_DS1216
989	tristate "Dallas DS1216"
990	depends on SNI_RM
991	help
992	  If you say yes here you get support for the Dallas DS1216 RTC chips.
993
994config RTC_DRV_DS1286
995	tristate "Dallas DS1286"
996	depends on HAS_IOMEM
997	help
998	  If you say yes here you get support for the Dallas DS1286 RTC chips.
999
1000config RTC_DRV_DS1511
1001	tristate "Dallas DS1511"
1002	depends on HAS_IOMEM
1003	help
1004	  If you say yes here you get support for the
1005	  Dallas DS1511 timekeeping/watchdog chip.
1006
1007	  This driver can also be built as a module. If so, the module
1008	  will be called rtc-ds1511.
1009
1010config RTC_DRV_DS1553
1011	tristate "Maxim/Dallas DS1553"
1012	depends on HAS_IOMEM
1013	help
1014	  If you say yes here you get support for the
1015	  Maxim/Dallas DS1553 timekeeping chip.
1016
1017	  This driver can also be built as a module. If so, the module
1018	  will be called rtc-ds1553.
1019
1020config RTC_DRV_DS1685_FAMILY
1021	tristate "Dallas/Maxim DS1685 Family"
1022	help
1023	  If you say yes here you get support for the Dallas/Maxim DS1685
1024	  family of real time chips.  This family includes the DS1685/DS1687,
1025	  DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
1026	  DS17885/DS17887 chips.
1027
1028	  This driver can also be built as a module. If so, the module
1029	  will be called rtc-ds1685.
1030
1031choice
1032	prompt "Subtype"
1033	depends on RTC_DRV_DS1685_FAMILY
1034	default RTC_DRV_DS1685
1035
1036config RTC_DRV_DS1685
1037	bool "DS1685/DS1687"
1038	help
1039	  This enables support for the Dallas/Maxim DS1685/DS1687 real time
1040	  clock chip.
1041
1042	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
1043	  systems, as well as EPPC-405-UC modules by electronic system design
1044	  GmbH.
1045
1046config RTC_DRV_DS1689
1047	bool "DS1689/DS1693"
1048	help
1049	  This enables support for the Dallas/Maxim DS1689/DS1693 real time
1050	  clock chip.
1051
1052	  This is an older RTC chip, supplanted by the DS1685/DS1687 above,
1053	  which supports a few minor features such as Vcc, Vbat, and Power
1054	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
1055
1056	  It also works for the even older DS1688/DS1691 RTC chips, which are
1057	  virtually the same and carry the same model number.  Both chips
1058	  have 114 bytes of user NVRAM.
1059
1060config RTC_DRV_DS17285
1061	bool "DS17285/DS17287"
1062	help
1063	  This enables support for the Dallas/Maxim DS17285/DS17287 real time
1064	  clock chip.
1065
1066	  This chip features 2kb of extended NV-SRAM.  It may possibly be
1067	  found in some SGI O2 systems (rare).
1068
1069config RTC_DRV_DS17485
1070	bool "DS17485/DS17487"
1071	help
1072	  This enables support for the Dallas/Maxim DS17485/DS17487 real time
1073	  clock chip.
1074
1075	  This chip features 4kb of extended NV-SRAM.
1076
1077config RTC_DRV_DS17885
1078	bool "DS17885/DS17887"
1079	help
1080	  This enables support for the Dallas/Maxim DS17885/DS17887 real time
1081	  clock chip.
1082
1083	  This chip features 8kb of extended NV-SRAM.
1084
1085endchoice
1086
1087config RTC_DRV_DS1742
1088	tristate "Maxim/Dallas DS1742/1743"
1089	depends on HAS_IOMEM
1090	help
1091	  If you say yes here you get support for the
1092	  Maxim/Dallas DS1742/1743 timekeeping chip.
1093
1094	  This driver can also be built as a module. If so, the module
1095	  will be called rtc-ds1742.
1096
1097config RTC_DRV_DS2404
1098	tristate "Maxim/Dallas DS2404"
1099	help
1100	  If you say yes here you get support for the
1101	  Dallas DS2404 RTC chip.
1102
1103	  This driver can also be built as a module. If so, the module
1104	  will be called rtc-ds2404.
1105
1106config RTC_DRV_DA9052
1107	tristate "Dialog DA9052/DA9053 RTC"
1108	depends on PMIC_DA9052
1109	help
1110	  Say y here to support the RTC driver for Dialog Semiconductor
1111	  DA9052-BC and DA9053-AA/Bx PMICs.
1112
1113config RTC_DRV_DA9055
1114	tristate "Dialog Semiconductor DA9055 RTC"
1115	depends on MFD_DA9055
1116	help
1117	  If you say yes here you will get support for the
1118	  RTC of the Dialog DA9055 PMIC.
1119
1120	  This driver can also be built as a module. If so, the module
1121	  will be called rtc-da9055
1122
1123config RTC_DRV_DA9063
1124	tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1125	depends on MFD_DA9063 || MFD_DA9062
1126	help
1127	  If you say yes here you will get support for the RTC subsystem
1128	  for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1129
1130	  This driver can also be built as a module. If so, the module
1131	  will be called "rtc-da9063".
1132
1133config RTC_DRV_EFI
1134	tristate "EFI RTC"
1135	depends on EFI && !X86
1136	help
1137	  If you say yes here you will get support for the EFI
1138	  Real Time Clock.
1139
1140	  This driver can also be built as a module. If so, the module
1141	  will be called rtc-efi.
1142
1143config RTC_DRV_STK17TA8
1144	tristate "Simtek STK17TA8"
1145	depends on HAS_IOMEM
1146	help
1147	  If you say yes here you get support for the
1148	  Simtek STK17TA8 timekeeping chip.
1149
1150	  This driver can also be built as a module. If so, the module
1151	  will be called rtc-stk17ta8.
1152
1153config RTC_DRV_M48T86
1154	tristate "ST M48T86/Dallas DS12887"
1155	help
1156	  If you say Y here you will get support for the
1157	  ST M48T86 and Dallas DS12887 RTC chips.
1158
1159	  This driver can also be built as a module. If so, the module
1160	  will be called rtc-m48t86.
1161
1162config RTC_DRV_M48T35
1163	tristate "ST M48T35"
1164	depends on HAS_IOMEM
1165	help
1166	  If you say Y here you will get support for the
1167	  ST M48T35 RTC chip.
1168
1169	  This driver can also be built as a module, if so, the module
1170	  will be called "rtc-m48t35".
1171
1172config RTC_DRV_M48T59
1173	tristate "ST M48T59/M48T08/M48T02"
1174	depends on HAS_IOMEM
1175	help
1176	  If you say Y here you will get support for the
1177	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1178
1179	  These chips are usually found in Sun SPARC and UltraSPARC
1180	  workstations.
1181
1182	  This driver can also be built as a module, if so, the module
1183	  will be called "rtc-m48t59".
1184
1185config RTC_DRV_MSM6242
1186	tristate "Oki MSM6242"
1187	depends on HAS_IOMEM
1188	help
1189	  If you say yes here you get support for the Oki MSM6242
1190	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1191
1192	  This driver can also be built as a module. If so, the module
1193	  will be called rtc-msm6242.
1194
1195config RTC_DRV_BQ4802
1196	tristate "TI BQ4802"
1197	depends on HAS_IOMEM
1198	help
1199	  If you say Y here you will get support for the TI
1200	  BQ4802 RTC chip.
1201
1202	  This driver can also be built as a module. If so, the module
1203	  will be called rtc-bq4802.
1204
1205config RTC_DRV_RP5C01
1206	tristate "Ricoh RP5C01"
1207	depends on HAS_IOMEM
1208	help
1209	  If you say yes here you get support for the Ricoh RP5C01
1210	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1211	  and A4000).
1212
1213	  This driver can also be built as a module. If so, the module
1214	  will be called rtc-rp5c01.
1215
1216config RTC_DRV_V3020
1217	tristate "EM Microelectronic V3020"
1218	help
1219	  If you say yes here you will get support for the
1220	  EM Microelectronic v3020 RTC chip.
1221
1222	  This driver can also be built as a module. If so, the module
1223	  will be called rtc-v3020.
1224
1225config RTC_DRV_WM831X
1226	tristate "Wolfson Microelectronics WM831x RTC"
1227	depends on MFD_WM831X
1228	help
1229	  If you say yes here you will get support for the RTC subsystem
1230	  of the Wolfson Microelectronics WM831X series PMICs.
1231
1232	  This driver can also be built as a module. If so, the module
1233	  will be called "rtc-wm831x".
1234
1235config RTC_DRV_WM8350
1236	tristate "Wolfson Microelectronics WM8350 RTC"
1237	depends on MFD_WM8350
1238	help
1239	  If you say yes here you will get support for the RTC subsystem
1240	  of the Wolfson Microelectronics WM8350.
1241
1242	  This driver can also be built as a module. If so, the module
1243	  will be called "rtc-wm8350".
1244
1245config RTC_DRV_SC27XX
1246	tristate "Spreadtrum SC27xx RTC"
1247	depends on MFD_SC27XX_PMIC || COMPILE_TEST
1248	help
1249	  If you say Y here you will get support for the RTC subsystem
1250	  of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs
1251	  includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.
1252
1253	  This driver can also be built as a module. If so, the module
1254	  will be called rtc-sc27xx.
1255
1256config RTC_DRV_SPEAR
1257	tristate "SPEAR ST RTC"
1258	depends on PLAT_SPEAR || COMPILE_TEST
1259	default y
1260	help
1261	 If you say Y here you will get support for the RTC found on
1262	 spear
1263
1264config RTC_DRV_PCF50633
1265	depends on MFD_PCF50633
1266	tristate "NXP PCF50633 RTC"
1267	help
1268	  If you say yes here you get support for the RTC subsystem of the
1269	  NXP PCF50633 used in embedded systems.
1270
1271config RTC_DRV_AB3100
1272	tristate "ST-Ericsson AB3100 RTC"
1273	depends on AB3100_CORE
1274	default y if AB3100_CORE
1275	help
1276	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1277	  support. This chip contains a battery- and capacitor-backed RTC.
1278
1279config RTC_DRV_AB8500
1280	tristate "ST-Ericsson AB8500 RTC"
1281	depends on AB8500_CORE
1282	select RTC_INTF_DEV
1283	select RTC_INTF_DEV_UIE_EMUL
1284	help
1285	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1286	  support. This chip contains a battery- and capacitor-backed RTC.
1287
1288config RTC_DRV_OPAL
1289	tristate "IBM OPAL RTC driver"
1290	depends on PPC_POWERNV
1291	default y
1292	help
1293	  If you say yes here you get support for the PowerNV platform RTC
1294	  driver based on OPAL interfaces.
1295
1296	  This driver can also be built as a module. If so, the module
1297	  will be called rtc-opal.
1298
1299config RTC_DRV_ZYNQMP
1300	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1301	depends on OF && HAS_IOMEM
1302	help
1303	  If you say yes here you get support for the RTC controller found on
1304	  Xilinx Zynq Ultrascale+ MPSoC.
1305
1306config RTC_DRV_CROS_EC
1307	tristate "Chrome OS EC RTC driver"
1308	depends on CROS_EC
1309	help
1310	  If you say yes here you will get support for the
1311	  Chrome OS Embedded Controller's RTC.
1312
1313	  This driver can also be built as a module. If so, the module
1314	  will be called rtc-cros-ec.
1315
1316comment "on-CPU RTC drivers"
1317
1318config RTC_DRV_ASM9260
1319	tristate "Alphascale asm9260 RTC"
1320	depends on MACH_ASM9260 || COMPILE_TEST
1321	help
1322	  If you say yes here you get support for the RTC on the
1323	  Alphascale asm9260 SoC.
1324
1325	  This driver can also be built as a module. If so, the module
1326	  will be called rtc-asm9260.
1327
1328config RTC_DRV_DAVINCI
1329	tristate "TI DaVinci RTC"
1330	depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1331	help
1332	  If you say yes here you get support for the RTC on the
1333	  DaVinci platforms (DM365).
1334
1335	  This driver can also be built as a module. If so, the module
1336	  will be called rtc-davinci.
1337
1338config RTC_DRV_DIGICOLOR
1339	tristate "Conexant Digicolor RTC"
1340	depends on ARCH_DIGICOLOR || COMPILE_TEST
1341	help
1342	  If you say yes here you get support for the RTC on Conexant
1343	  Digicolor platforms. This currently includes the CX92755 SoC.
1344
1345	  This driver can also be built as a module. If so, the module
1346	  will be called rtc-digicolor.
1347
1348config RTC_DRV_IMXDI
1349	tristate "Freescale IMX DryIce Real Time Clock"
1350	depends on ARCH_MXC
1351	help
1352	   Support for Freescale IMX DryIce RTC
1353
1354	   This driver can also be built as a module, if so, the module
1355	   will be called "rtc-imxdi".
1356
1357config RTC_DRV_FSL_FTM_ALARM
1358	tristate "Freescale FlexTimer alarm timer"
1359	depends on ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST
1360	help
1361	   For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A,
1362	   LS1088A, LS208xA, we can use FTM as the wakeup source.
1363
1364	   Say y here to enable FTM alarm support. The FTM alarm provides
1365	   alarm functions for wakeup system from deep sleep.
1366
1367	   This driver can also be built as a module, if so, the module
1368	   will be called "rtc-fsl-ftm-alarm".
1369
1370config RTC_DRV_MESON
1371	tristate "Amlogic Meson RTC"
1372	depends on (ARM && ARCH_MESON) || COMPILE_TEST
1373	select REGMAP_MMIO
1374	help
1375	   Support for the RTC block on the Amlogic Meson6, Meson8, Meson8b
1376	   and Meson8m2 SoCs.
1377
1378	   This driver can also be built as a module, if so, the module
1379	   will be called "rtc-meson".
1380
1381config RTC_DRV_MESON_VRTC
1382	tristate "Amlogic Meson Virtual RTC"
1383	depends on ARCH_MESON || COMPILE_TEST
1384	default m if ARCH_MESON
1385	help
1386	  If you say yes here you will get support for the
1387	  Virtual RTC of Amlogic SoCs.
1388
1389	  This driver can also be built as a module. If so, the module
1390	  will be called rtc-meson-vrtc.
1391
1392config RTC_DRV_OMAP
1393	tristate "TI OMAP Real Time Clock"
1394	depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1395	depends on OF
1396	depends on PINCTRL
1397	select GENERIC_PINCONF
1398	help
1399	  Say "yes" here to support the on chip real time clock
1400	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1401
1402	  This driver can also be built as a module, if so, module
1403	  will be called rtc-omap.
1404
1405config HAVE_S3C_RTC
1406	bool
1407	help
1408	  This will include RTC support for Samsung SoCs. If
1409	  you want to include RTC support for any machine, kindly
1410	  select this in the respective mach-XXXX/Kconfig file.
1411
1412config RTC_DRV_S3C
1413	tristate "Samsung S3C series SoC RTC"
1414	depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1415	help
1416	  RTC (Realtime Clock) driver for the clock inbuilt into the
1417	  Samsung S3C24XX series of SoCs. This can provide periodic
1418	  interrupt rates from 1Hz to 64Hz for user programs, and
1419	  wakeup from Alarm.
1420
1421	  The driver currently supports the common features on all the
1422	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1423	  and S3C2442.
1424
1425	  This driver can also be build as a module. If so, the module
1426	  will be called rtc-s3c.
1427
1428config RTC_DRV_EP93XX
1429	tristate "Cirrus Logic EP93XX"
1430	depends on ARCH_EP93XX || COMPILE_TEST
1431	help
1432	  If you say yes here you get support for the
1433	  RTC embedded in the Cirrus Logic EP93XX processors.
1434
1435	  This driver can also be built as a module. If so, the module
1436	  will be called rtc-ep93xx.
1437
1438config RTC_DRV_SA1100
1439	tristate "SA11x0/PXA2xx/PXA910"
1440	depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1441	help
1442	  If you say Y here you will get access to the real time clock
1443	  built into your SA11x0 or PXA2xx CPU.
1444
1445	  To compile this driver as a module, choose M here: the
1446	  module will be called rtc-sa1100.
1447
1448config RTC_DRV_SH
1449	tristate "SuperH On-Chip RTC"
1450	depends on SUPERH || ARCH_RENESAS
1451	help
1452	  Say Y here to enable support for the on-chip RTC found in
1453	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1454
1455	  To compile this driver as a module, choose M here: the
1456	  module will be called rtc-sh.
1457
1458config RTC_DRV_VR41XX
1459	tristate "NEC VR41XX"
1460	depends on CPU_VR41XX || COMPILE_TEST
1461	help
1462	  If you say Y here you will get access to the real time clock
1463	  built into your NEC VR41XX CPU.
1464
1465	  To compile this driver as a module, choose M here: the
1466	  module will be called rtc-vr41xx.
1467
1468config RTC_DRV_PL030
1469	tristate "ARM AMBA PL030 RTC"
1470	depends on ARM_AMBA
1471	help
1472	  If you say Y here you will get access to ARM AMBA
1473	  PrimeCell PL030 RTC found on certain ARM SOCs.
1474
1475	  To compile this driver as a module, choose M here: the
1476	  module will be called rtc-pl030.
1477
1478config RTC_DRV_PL031
1479	tristate "ARM AMBA PL031 RTC"
1480	depends on ARM_AMBA
1481	help
1482	  If you say Y here you will get access to ARM AMBA
1483	  PrimeCell PL031 RTC found on certain ARM SOCs.
1484
1485	  To compile this driver as a module, choose M here: the
1486	  module will be called rtc-pl031.
1487
1488config RTC_DRV_AT91RM9200
1489	tristate "AT91RM9200 or some AT91SAM9 RTC"
1490	depends on ARCH_AT91 || COMPILE_TEST
1491	depends on OF
1492	help
1493	  Driver for the internal RTC (Realtime Clock) module found on
1494	  Atmel AT91RM9200's and some  AT91SAM9 chips. On AT91SAM9 chips
1495	  this is powered by the backup power supply.
1496
1497config RTC_DRV_AT91SAM9
1498	tristate "AT91SAM9 RTT as RTC"
1499	depends on ARCH_AT91 || COMPILE_TEST
1500	depends on OF && HAS_IOMEM
1501	select MFD_SYSCON
1502	help
1503	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1504	  can be used as an RTC thanks to the backup power supply (e.g. a
1505	  small coin cell battery) which keeps this block and the GPBR
1506	  (General Purpose Backup Registers) block powered when the device
1507	  is shutdown.
1508	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1509	  probably want to use the real RTC block instead of the "RTT as an
1510	  RTC" driver.
1511
1512config RTC_DRV_AU1XXX
1513	tristate "Au1xxx Counter0 RTC support"
1514	depends on MIPS_ALCHEMY
1515	help
1516	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1517	  counter) to be used as a RTC.
1518
1519	  This driver can also be built as a module. If so, the module
1520	  will be called rtc-au1xxx.
1521
1522config RTC_DRV_RS5C313
1523	tristate "Ricoh RS5C313"
1524	depends on SH_LANDISK
1525	help
1526	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1527
1528config RTC_DRV_GENERIC
1529	tristate "Generic RTC support"
1530	# Please consider writing a new RTC driver instead of using the generic
1531	# RTC abstraction
1532	depends on PARISC || M68K || PPC || SUPERH || COMPILE_TEST
1533	help
1534	  Say Y or M here to enable RTC support on systems using the generic
1535	  RTC abstraction. If you do not know what you are doing, you should
1536	  just say Y.
1537
1538config RTC_DRV_PXA
1539	tristate "PXA27x/PXA3xx"
1540	depends on ARCH_PXA
1541	select RTC_DRV_SA1100
1542	help
1543	 If you say Y here you will get access to the real time clock
1544	 built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1545	 consisting of an SA1100 compatible RTC and the extended PXA RTC.
1546
1547	 This RTC driver uses PXA RTC registers available since pxa27x
1548	 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1549
1550config RTC_DRV_VT8500
1551	tristate "VIA/WonderMedia 85xx SoC RTC"
1552	depends on ARCH_VT8500 || COMPILE_TEST
1553	help
1554	  If you say Y here you will get access to the real time clock
1555	  built into your VIA VT8500 SoC or its relatives.
1556
1557
1558config RTC_DRV_SUN4V
1559	bool "SUN4V Hypervisor RTC"
1560	depends on SPARC64
1561	help
1562	  If you say Y here you will get support for the Hypervisor
1563	  based RTC on SUN4V systems.
1564
1565config RTC_DRV_SUN6I
1566	bool "Allwinner A31 RTC"
1567	default MACH_SUN6I || MACH_SUN8I
1568	depends on COMMON_CLK
1569	depends on ARCH_SUNXI || COMPILE_TEST
1570	help
1571	  If you say Y here you will get support for the RTC found in
1572	  some Allwinner SoCs like the A31 or the A64.
1573
1574config RTC_DRV_SUNXI
1575	tristate "Allwinner sun4i/sun7i RTC"
1576	depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1577	help
1578	  If you say Y here you will get support for the RTC found on
1579	  Allwinner A10/A20.
1580
1581config RTC_DRV_STARFIRE
1582	bool "Starfire RTC"
1583	depends on SPARC64
1584	help
1585	  If you say Y here you will get support for the RTC found on
1586	  Starfire systems.
1587
1588config RTC_DRV_TX4939
1589	tristate "TX4939 SoC"
1590	depends on SOC_TX4939 || COMPILE_TEST
1591	help
1592	  Driver for the internal RTC (Realtime Clock) module found on
1593	  Toshiba TX4939 SoC.
1594
1595config RTC_DRV_MV
1596	tristate "Marvell SoC RTC"
1597	depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1598	help
1599	  If you say yes here you will get support for the in-chip RTC
1600	  that can be found in some of Marvell's SoC devices, such as
1601	  the Kirkwood 88F6281 and 88F6192.
1602
1603	  This driver can also be built as a module. If so, the module
1604	  will be called rtc-mv.
1605
1606config RTC_DRV_ARMADA38X
1607	tristate "Armada 38x Marvell SoC RTC"
1608	depends on ARCH_MVEBU || COMPILE_TEST
1609	help
1610	  If you say yes here you will get support for the in-chip RTC
1611	  that can be found in the Armada 38x Marvell's SoC device
1612
1613	  This driver can also be built as a module. If so, the module
1614	  will be called armada38x-rtc.
1615
1616config RTC_DRV_CADENCE
1617	tristate "Cadence RTC driver"
1618	depends on OF && HAS_IOMEM
1619	help
1620	  If you say Y here you will get access to Cadence RTC IP
1621	  found on certain SOCs.
1622
1623	  To compile this driver as a module, choose M here: the
1624	  module will be called rtc-cadence.
1625
1626config RTC_DRV_FTRTC010
1627	tristate "Faraday Technology FTRTC010 RTC"
1628	depends on HAS_IOMEM
1629	default ARCH_GEMINI
1630	help
1631	  If you say Y here you will get support for the
1632	  Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
1633
1634	  This driver can also be built as a module. If so, the module
1635	  will be called rtc-ftrtc010.
1636
1637config RTC_DRV_PS3
1638	tristate "PS3 RTC"
1639	depends on PPC_PS3
1640	help
1641	  If you say yes here you will get support for the RTC on PS3.
1642
1643	  This driver can also be built as a module. If so, the module
1644	  will be called rtc-ps3.
1645
1646config RTC_DRV_COH901331
1647	tristate "ST-Ericsson COH 901 331 RTC"
1648	depends on ARCH_U300 || COMPILE_TEST
1649	help
1650	  If you say Y here you will get access to ST-Ericsson
1651	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
1652	  Platforms.
1653
1654	  This driver can also be built as a module. If so, the module
1655	  will be called "rtc-coh901331".
1656
1657
1658config RTC_DRV_STMP
1659	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1660	depends on ARCH_MXS || COMPILE_TEST
1661	select STMP_DEVICE
1662	help
1663	  If you say yes here you will get support for the onboard
1664	  STMP3xxx/i.MX23/i.MX28 RTC.
1665
1666	  This driver can also be built as a module. If so, the module
1667	  will be called rtc-stmp3xxx.
1668
1669config RTC_DRV_PCAP
1670	tristate "PCAP RTC"
1671	depends on EZX_PCAP
1672	help
1673	  If you say Y here you will get support for the RTC found on
1674	  the PCAP2 ASIC used on some Motorola phones.
1675
1676config RTC_DRV_MC13XXX
1677	depends on MFD_MC13XXX
1678	tristate "Freescale MC13xxx RTC"
1679	help
1680	  This enables support for the RTCs found on Freescale's PMICs
1681	  MC13783 and MC13892.
1682
1683config RTC_DRV_MPC5121
1684	tristate "Freescale MPC5121 built-in RTC"
1685	depends on PPC_MPC512x || PPC_MPC52xx
1686	help
1687	  If you say yes here you will get support for the
1688	  built-in RTC on MPC5121 or on MPC5200.
1689
1690	  This driver can also be built as a module. If so, the module
1691	  will be called rtc-mpc5121.
1692
1693config RTC_DRV_JZ4740
1694	tristate "Ingenic JZ4740 SoC"
1695	depends on MIPS || COMPILE_TEST
1696	depends on OF
1697	help
1698	  If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1699	  controllers.
1700
1701	  This driver can also be built as a module. If so, the module
1702	  will be called rtc-jz4740.
1703
1704config RTC_DRV_LPC24XX
1705	tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1706	depends on ARCH_LPC18XX || COMPILE_TEST
1707	depends on OF && HAS_IOMEM
1708	help
1709	  This enables support for the NXP RTC found which can be found on
1710	  NXP LPC178x/18xx/408x/43xx devices.
1711
1712	  If you have one of the devices above enable this driver to use
1713	  the hardware RTC. This driver can also be built as a module. If
1714	  so, the module will be called rtc-lpc24xx.
1715
1716config RTC_DRV_LPC32XX
1717	depends on ARCH_LPC32XX || COMPILE_TEST
1718	tristate "NXP LPC32XX RTC"
1719	help
1720	  This enables support for the NXP RTC in the LPC32XX
1721
1722	  This driver can also be built as a module. If so, the module
1723	  will be called rtc-lpc32xx.
1724
1725config RTC_DRV_PM8XXX
1726	tristate "Qualcomm PMIC8XXX RTC"
1727	depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1728	help
1729	  If you say yes here you get support for the
1730	  Qualcomm PMIC8XXX RTC.
1731
1732	  To compile this driver as a module, choose M here: the
1733	  module will be called rtc-pm8xxx.
1734
1735config RTC_DRV_TEGRA
1736	tristate "NVIDIA Tegra Internal RTC driver"
1737	depends on ARCH_TEGRA || COMPILE_TEST
1738	help
1739	  If you say yes here you get support for the
1740	  Tegra 200 series internal RTC module.
1741
1742	  This drive can also be built as a module. If so, the module
1743	  will be called rtc-tegra.
1744
1745config RTC_DRV_LOONGSON1
1746	tristate "loongson1 RTC support"
1747	depends on MACH_LOONGSON32
1748	help
1749	  This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1750	  counter) to be used as a RTC.
1751
1752	  This driver can also be built as a module. If so, the module
1753	  will be called rtc-ls1x.
1754
1755config RTC_DRV_MXC
1756	tristate "Freescale MXC Real Time Clock"
1757	depends on ARCH_MXC
1758	help
1759	   If you say yes here you get support for the Freescale MXC
1760	   RTC module.
1761
1762	   This driver can also be built as a module, if so, the module
1763	   will be called "rtc-mxc".
1764
1765config RTC_DRV_MXC_V2
1766	tristate "Freescale MXC Real Time Clock for i.MX53"
1767	depends on ARCH_MXC
1768	help
1769	   If you say yes here you get support for the Freescale MXC
1770	   SRTC module in i.MX53 processor.
1771
1772	   This driver can also be built as a module, if so, the module
1773	   will be called "rtc-mxc_v2".
1774
1775config RTC_DRV_SNVS
1776	tristate "Freescale SNVS RTC support"
1777	select REGMAP_MMIO
1778	depends on ARCH_MXC || COMPILE_TEST
1779	depends on HAS_IOMEM
1780	depends on OF
1781	help
1782	   If you say yes here you get support for the Freescale SNVS
1783	   Low Power (LP) RTC module.
1784
1785	   This driver can also be built as a module, if so, the module
1786	   will be called "rtc-snvs".
1787
1788config RTC_DRV_IMX_SC
1789	depends on IMX_SCU
1790	depends on HAVE_ARM_SMCCC
1791	tristate "NXP i.MX System Controller RTC support"
1792	help
1793	   If you say yes here you get support for the NXP i.MX System
1794	   Controller RTC module.
1795
1796config RTC_DRV_SIRFSOC
1797	tristate "SiRFSOC RTC"
1798	depends on ARCH_SIRF
1799	help
1800	  Say "yes" here to support the real time clock on SiRF SOC chips.
1801	  This driver can also be built as a module called rtc-sirfsoc.
1802
1803config RTC_DRV_ST_LPC
1804	tristate "STMicroelectronics LPC RTC"
1805	depends on ARCH_STI
1806	depends on OF
1807	help
1808	  Say Y here to include STMicroelectronics Low Power Controller
1809	  (LPC) based RTC support.
1810
1811	  To compile this driver as a module, choose M here: the
1812	  module will be called rtc-st-lpc.
1813
1814config RTC_DRV_MOXART
1815	tristate "MOXA ART RTC"
1816	depends on ARCH_MOXART || COMPILE_TEST
1817	help
1818	   If you say yes here you get support for the MOXA ART
1819	   RTC module.
1820
1821	   This driver can also be built as a module. If so, the module
1822	   will be called rtc-moxart
1823
1824config RTC_DRV_MT2712
1825	tristate "MediaTek MT2712 SoC based RTC"
1826	depends on ARCH_MEDIATEK || COMPILE_TEST
1827	help
1828	  This enables support for the real time clock built in the MediaTek
1829	  SoCs for MT2712.
1830
1831	  This drive can also be built as a module. If so, the module
1832	  will be called rtc-mt2712.
1833
1834config RTC_DRV_MT6397
1835	tristate "MediaTek PMIC based RTC"
1836	depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1837	help
1838	  This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
1839	  MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1840	  MediaTek(R) RTC driver.
1841
1842	  If you want to use MediaTek(R) RTC interface, select Y or M here.
1843
1844config RTC_DRV_MT7622
1845	tristate "MediaTek SoC based RTC"
1846	depends on ARCH_MEDIATEK || COMPILE_TEST
1847	help
1848	  This enables support for the real time clock built in the MediaTek
1849	  SoCs.
1850
1851	  This drive can also be built as a module. If so, the module
1852	  will be called rtc-mt7622.
1853
1854config RTC_DRV_XGENE
1855	tristate "APM X-Gene RTC"
1856	depends on HAS_IOMEM
1857	depends on ARCH_XGENE || COMPILE_TEST
1858	help
1859	  If you say yes here you get support for the APM X-Gene SoC real time
1860	  clock.
1861
1862	  This driver can also be built as a module, if so, the module
1863	  will be called "rtc-xgene".
1864
1865config RTC_DRV_PIC32
1866	tristate "Microchip PIC32 RTC"
1867	depends on MACH_PIC32
1868	default y
1869	help
1870	   If you say yes here you get support for the PIC32 RTC module.
1871
1872	   This driver can also be built as a module. If so, the module
1873	   will be called rtc-pic32
1874
1875config RTC_DRV_R7301
1876	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1877	select REGMAP_MMIO
1878	depends on OF && HAS_IOMEM
1879	help
1880	   If you say yes here you get support for the EPSON TOYOCOM
1881	   RTC-7301SF/DG chips.
1882
1883	   This driver can also be built as a module. If so, the module
1884	   will be called rtc-r7301.
1885
1886config RTC_DRV_STM32
1887	tristate "STM32 RTC"
1888	select REGMAP_MMIO
1889	depends on ARCH_STM32 || COMPILE_TEST
1890	help
1891	   If you say yes here you get support for the STM32 On-Chip
1892	   Real Time Clock.
1893
1894	   This driver can also be built as a module, if so, the module
1895	   will be called "rtc-stm32".
1896
1897config RTC_DRV_CPCAP
1898	depends on MFD_CPCAP
1899	tristate "Motorola CPCAP RTC"
1900	help
1901	   Say y here for CPCAP rtc found on some Motorola phones
1902	   and tablets such as Droid 4.
1903
1904config RTC_DRV_RTD119X
1905	bool "Realtek RTD129x RTC"
1906	depends on ARCH_REALTEK || COMPILE_TEST
1907	default ARCH_REALTEK
1908	help
1909	  If you say yes here, you get support for the RTD1295 SoC
1910	  Real Time Clock.
1911
1912config RTC_DRV_ASPEED
1913	tristate "ASPEED RTC"
1914	depends on OF
1915	depends on ARCH_ASPEED || COMPILE_TEST
1916	help
1917	  If you say yes here you get support for the ASPEED BMC SoC real time
1918	  clocks.
1919
1920	  This driver can also be built as a module, if so, the module
1921	  will be called "rtc-aspeed".
1922
1923comment "HID Sensor RTC drivers"
1924
1925config RTC_DRV_HID_SENSOR_TIME
1926	tristate "HID Sensor Time"
1927	depends on USB_HID
1928	depends on HID_SENSOR_HUB && IIO
1929	select HID_SENSOR_IIO_COMMON
1930	help
1931	  Say yes here to build support for the HID Sensors of type Time.
1932	  This drivers makes such sensors available as RTCs.
1933
1934	  If this driver is compiled as a module, it will be named
1935	  rtc-hid-sensor-time.
1936
1937config RTC_DRV_GOLDFISH
1938	tristate "Goldfish Real Time Clock"
1939	depends on OF && HAS_IOMEM
1940	depends on GOLDFISH || COMPILE_TEST
1941	help
1942	  Say yes to enable RTC driver for the Goldfish based virtual platform.
1943
1944	  Goldfish is a code name for the virtual platform developed by Google
1945	  for Android emulation.
1946
1947config RTC_DRV_WILCO_EC
1948	tristate "Wilco EC RTC"
1949	depends on WILCO_EC
1950	default m
1951	help
1952	  If you say yes here, you get read/write support for the Real Time
1953	  Clock on the Wilco Embedded Controller (Wilco is a kind of Chromebook)
1954
1955	  This can also be built as a module. If so, the module will
1956	  be named "rtc_wilco_ec".
1957
1958endif # RTC_CLASS
1959