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1#
2# RTC class/drivers configuration
3#
4
5config RTC_LIB
6	bool
7
8config RTC_MC146818_LIB
9	bool
10	select RTC_LIB
11
12menuconfig RTC_CLASS
13	bool "Real Time Clock"
14	default n
15	depends on !S390 && !UML
16	select RTC_LIB
17	help
18	  Generic RTC class support. If you say yes here, you will
19	  be allowed to plug one or more RTCs to your system. You will
20	  probably want to enable one or more of the interfaces below.
21
22if RTC_CLASS
23
24config RTC_HCTOSYS
25	bool "Set system time from RTC on startup and resume"
26	default y
27	help
28	  If you say yes here, the system time (wall clock) will be set using
29	  the value read from a specified RTC device. This is useful to avoid
30	  unnecessary fsck runs at boot time, and to network better.
31
32config RTC_HCTOSYS_DEVICE
33	string "RTC used to set the system time"
34	depends on RTC_HCTOSYS
35	default "rtc0"
36	help
37	  The RTC device that will be used to (re)initialize the system
38	  clock, usually rtc0. Initialization is done when the system
39	  starts up, and when it resumes from a low power state. This
40	  device should record time in UTC, since the kernel won't do
41	  timezone correction.
42
43	  The driver for this RTC device must be loaded before late_initcall
44	  functions run, so it must usually be statically linked.
45
46	  This clock should be battery-backed, so that it reads the correct
47	  time when the system boots from a power-off state. Otherwise, your
48	  system will need an external clock source (like an NTP server).
49
50	  If the clock you specify here is not battery backed, it may still
51	  be useful to reinitialize system time when resuming from system
52	  sleep states. Do not specify an RTC here unless it stays powered
53	  during all this system's supported sleep states.
54
55config RTC_SYSTOHC
56	bool "Set the RTC time based on NTP synchronization"
57	default y
58	help
59	  If you say yes here, the system time (wall clock) will be stored
60	  in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
61	  minutes if userspace reports synchronized NTP status.
62
63config RTC_SYSTOHC_DEVICE
64	string "RTC used to synchronize NTP adjustment"
65	depends on RTC_SYSTOHC
66	default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
67	default "rtc0"
68	help
69	  The RTC device used for NTP synchronization. The main difference
70	  between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this
71	  one can sleep when setting time, because it runs in the workqueue
72	  context.
73
74config RTC_DEBUG
75	bool "RTC debug support"
76	help
77	  Say yes here to enable debugging support in the RTC framework
78	  and individual RTC drivers.
79
80config RTC_NVMEM
81	bool "RTC non volatile storage support"
82	select NVMEM
83	default RTC_CLASS
84	help
85	  Say yes here to add support for the non volatile (often battery
86	  backed) storage present on RTCs.
87
88comment "RTC interfaces"
89
90config RTC_INTF_SYSFS
91	bool "/sys/class/rtc/rtcN (sysfs)"
92	depends on SYSFS
93	default RTC_CLASS
94	help
95	  Say yes here if you want to use your RTCs using sysfs interfaces,
96	  /sys/class/rtc/rtc0 through /sys/.../rtcN.
97
98	  If unsure, say Y.
99
100config RTC_INTF_PROC
101	bool "/proc/driver/rtc (procfs for rtcN)"
102	depends on PROC_FS
103	default RTC_CLASS
104	help
105	  Say yes here if you want to use your system clock RTC through
106	  the proc interface, /proc/driver/rtc.
107	  Other RTCs will not be available through that API.
108	  If there is no RTC for the system clock, then the first RTC(rtc0)
109	  is used by default.
110
111	  If unsure, say Y.
112
113config RTC_INTF_DEV
114	bool "/dev/rtcN (character devices)"
115	default RTC_CLASS
116	help
117	  Say yes here if you want to use your RTCs using the /dev
118	  interfaces, which "udev" sets up as /dev/rtc0 through
119	  /dev/rtcN.
120
121	  You may want to set up a symbolic link so one of these
122	  can be accessed as /dev/rtc, which is a name
123	  expected by "hwclock" and some other programs. Recent
124	  versions of "udev" are known to set up the symlink for you.
125
126	  If unsure, say Y.
127
128config RTC_INTF_DEV_UIE_EMUL
129	bool "RTC UIE emulation on dev interface"
130	depends on RTC_INTF_DEV
131	help
132	  Provides an emulation for RTC_UIE if the underlying rtc chip
133	  driver does not expose RTC_UIE ioctls. Those requests generate
134	  once-per-second update interrupts, used for synchronization.
135
136	  The emulation code will read the time from the hardware
137	  clock several times per second, please enable this option
138	  only if you know that you really need it.
139
140config RTC_DRV_TEST
141	tristate "Test driver/device"
142	help
143	  If you say yes here you get support for the
144	  RTC test driver. It's a software RTC which can be
145	  used to test the RTC subsystem APIs. It gets
146	  the time from the system clock.
147	  You want this driver only if you are doing development
148	  on the RTC subsystem. Please read the source code
149	  for further details.
150
151	  This driver can also be built as a module. If so, the module
152	  will be called rtc-test.
153
154comment "I2C RTC drivers"
155
156if I2C
157
158config RTC_DRV_88PM860X
159	tristate "Marvell 88PM860x"
160	depends on MFD_88PM860X
161	help
162	  If you say yes here you get support for RTC function in Marvell
163	  88PM860x chips.
164
165	  This driver can also be built as a module. If so, the module
166	  will be called rtc-88pm860x.
167
168config RTC_DRV_88PM80X
169	tristate "Marvell 88PM80x"
170	depends on MFD_88PM800
171	help
172	  If you say yes here you get support for RTC function in Marvell
173	  88PM80x chips.
174
175	  This driver can also be built as a module. If so, the module
176	  will be called rtc-88pm80x.
177
178config RTC_DRV_ABB5ZES3
179	select REGMAP_I2C
180	tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
181	help
182	  If you say yes here you get support for the Abracon
183	  AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
184
185	  This driver can also be built as a module. If so, the module
186	  will be called rtc-ab-b5ze-s3.
187
188config RTC_DRV_ABX80X
189	tristate "Abracon ABx80x"
190	help
191	  If you say yes here you get support for Abracon AB080X and AB180X
192	  families of ultra-low-power  battery- and capacitor-backed real-time
193	  clock chips.
194
195	  This driver can also be built as a module. If so, the module
196	  will be called rtc-abx80x.
197
198config RTC_DRV_AC100
199	tristate "X-Powers AC100"
200	depends on MFD_AC100
201	help
202	  If you say yes here you get support for the real-time clock found
203	  in X-Powers AC100 family peripheral ICs.
204
205	  This driver can also be built as a module. If so, the module
206	  will be called rtc-ac100.
207
208config RTC_DRV_BRCMSTB
209	tristate "Broadcom STB wake-timer"
210	depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
211	default ARCH_BRCMSTB || BMIPS_GENERIC
212	help
213	  If you say yes here you get support for the wake-timer found on
214	  Broadcom STB SoCs (BCM7xxx).
215
216	  This driver can also be built as a module. If so, the module will
217	  be called rtc-brcmstb-waketimer.
218
219config RTC_DRV_AS3722
220	tristate "ams AS3722 RTC driver"
221	depends on MFD_AS3722
222	help
223	  If you say yes here you get support for the RTC of ams AS3722 PMIC
224	  chips.
225
226	  This driver can also be built as a module. If so, the module
227	  will be called rtc-as3722.
228
229config RTC_DRV_DS1307
230	tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
231	help
232	  If you say yes here you get support for various compatible RTC
233	  chips (often with battery backup) connected with I2C. This driver
234	  should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341,
235	  ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
236	  In some cases the RTC must already have been initialized (by
237	  manufacturing or a bootloader).
238
239	  The first seven registers on these chips hold an RTC, and other
240	  registers may add features such as NVRAM, a trickle charger for
241	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
242	  sysfs, but other chip features may not be available.
243
244	  This driver can also be built as a module. If so, the module
245	  will be called rtc-ds1307.
246
247config RTC_DRV_DS1307_HWMON
248	bool "HWMON support for rtc-ds1307"
249	depends on RTC_DRV_DS1307 && HWMON
250	depends on !(RTC_DRV_DS1307=y && HWMON=m)
251	default y
252	help
253	  Say Y here if you want to expose temperature sensor data on
254	  rtc-ds1307 (only DS3231)
255
256config RTC_DRV_DS1307_CENTURY
257	bool "Century bit support for rtc-ds1307"
258	depends on RTC_DRV_DS1307
259	default n
260	help
261	  The DS1307 driver suffered from a bug where it was enabling the
262	  century bit inconditionnally but never used it when reading the time.
263	  It made the driver unable to support dates beyond 2099.
264	  Setting this option will add proper support for the century bit but if
265	  the time was previously set using a kernel predating this option,
266	  reading the date will return a date in the next century.
267	  To solve that, you could boot a kernel without this option set, set
268	  the RTC date and then boot a kernel with this option set.
269
270config RTC_DRV_DS1374
271	tristate "Dallas/Maxim DS1374"
272	help
273	  If you say yes here you get support for Dallas Semiconductor
274	  DS1374 real-time clock chips. If an interrupt is associated
275	  with the device, the alarm functionality is supported.
276
277	  This driver can also be built as a module. If so, the module
278	  will be called rtc-ds1374.
279
280config RTC_DRV_DS1374_WDT
281	bool "Dallas/Maxim DS1374 watchdog timer"
282	depends on RTC_DRV_DS1374
283	help
284	  If you say Y here you will get support for the
285	  watchdog timer in the Dallas Semiconductor DS1374
286	  real-time clock chips.
287
288config RTC_DRV_DS1672
289	tristate "Dallas/Maxim DS1672"
290	help
291	  If you say yes here you get support for the
292	  Dallas/Maxim DS1672 timekeeping chip.
293
294	  This driver can also be built as a module. If so, the module
295	  will be called rtc-ds1672.
296
297config RTC_DRV_HYM8563
298	tristate "Haoyu Microelectronics HYM8563"
299	depends on OF
300	help
301	  Say Y to enable support for the HYM8563 I2C RTC chip. Apart
302	  from the usual rtc functions it provides a clock output of
303	  up to 32kHz.
304
305	  This driver can also be built as a module. If so, the module
306	  will be called rtc-hym8563.
307
308config RTC_DRV_LP8788
309	tristate "TI LP8788 RTC driver"
310	depends on MFD_LP8788
311	help
312	  Say Y to enable support for the LP8788 RTC/ALARM driver.
313
314config RTC_DRV_MAX6900
315	tristate "Maxim MAX6900"
316	help
317	  If you say yes here you will get support for the
318	  Maxim MAX6900 I2C RTC chip.
319
320	  This driver can also be built as a module. If so, the module
321	  will be called rtc-max6900.
322
323config RTC_DRV_MAX8907
324	tristate "Maxim MAX8907"
325	depends on MFD_MAX8907 || COMPILE_TEST
326	select REGMAP_IRQ
327	help
328	  If you say yes here you will get support for the
329	  RTC of Maxim MAX8907 PMIC.
330
331	  This driver can also be built as a module. If so, the module
332	  will be called rtc-max8907.
333
334config RTC_DRV_MAX8925
335	tristate "Maxim MAX8925"
336	depends on MFD_MAX8925
337	help
338	  If you say yes here you will get support for the
339	  RTC of Maxim MAX8925 PMIC.
340
341	  This driver can also be built as a module. If so, the module
342	  will be called rtc-max8925.
343
344config RTC_DRV_MAX8998
345	tristate "Maxim MAX8998"
346	depends on MFD_MAX8998
347	help
348	  If you say yes here you will get support for the
349	  RTC of Maxim MAX8998 PMIC.
350
351	  This driver can also be built as a module. If so, the module
352	  will be called rtc-max8998.
353
354config RTC_DRV_MAX8997
355	tristate "Maxim MAX8997"
356	depends on MFD_MAX8997
357	help
358	  If you say yes here you will get support for the
359	  RTC of Maxim MAX8997 PMIC.
360
361	  This driver can also be built as a module. If so, the module
362	  will be called rtc-max8997.
363
364config RTC_DRV_MAX77686
365	tristate "Maxim MAX77686"
366	depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
367	help
368	  If you say yes here you will get support for the
369	  RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
370
371	  This driver can also be built as a module. If so, the module
372	  will be called rtc-max77686.
373
374config RTC_DRV_RK808
375	tristate "Rockchip RK805/RK808/RK818 RTC"
376	depends on MFD_RK808
377	help
378	  If you say yes here you will get support for the
379	  RTC of RK805, RK808 and RK818 PMIC.
380
381	  This driver can also be built as a module. If so, the module
382	  will be called rk808-rtc.
383
384config RTC_DRV_RS5C372
385	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
386	help
387	  If you say yes here you get support for the
388	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
389
390	  This driver can also be built as a module. If so, the module
391	  will be called rtc-rs5c372.
392
393config RTC_DRV_ISL1208
394	tristate "Intersil ISL1208"
395	help
396	  If you say yes here you get support for the
397	  Intersil ISL1208 RTC chip.
398
399	  This driver can also be built as a module. If so, the module
400	  will be called rtc-isl1208.
401
402config RTC_DRV_ISL12022
403	tristate "Intersil ISL12022"
404	help
405	  If you say yes here you get support for the
406	  Intersil ISL12022 RTC chip.
407
408	  This driver can also be built as a module. If so, the module
409	  will be called rtc-isl12022.
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_PCF8563
438	tristate "Philips PCF8563/Epson RTC8564"
439	help
440	  If you say yes here you get support for the
441	  Philips PCF8563 RTC chip. The Epson RTC8564
442	  should work as well.
443
444	  This driver can also be built as a module. If so, the module
445	  will be called rtc-pcf8563.
446
447config RTC_DRV_PCF8583
448	tristate "Philips PCF8583"
449	help
450	  If you say yes here you get support for the Philips PCF8583
451	  RTC chip found on Acorn RiscPCs. This driver supports the
452	  platform specific method of retrieving the current year from
453	  the RTC's SRAM. It will work on other platforms with the same
454	  chip, but the year will probably have to be tweaked.
455
456	  This driver can also be built as a module. If so, the module
457	  will be called rtc-pcf8583.
458
459config RTC_DRV_M41T80
460	tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
461	help
462	  If you say Y here you will get support for the ST M41T60
463	  and M41T80 RTC chips series. Currently, the following chips are
464	  supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
465	  M41ST85, M41ST87, and MicroCrystal RV4162.
466
467	  This driver can also be built as a module. If so, the module
468	  will be called rtc-m41t80.
469
470config RTC_DRV_M41T80_WDT
471	bool "ST M41T65/M41T80 series RTC watchdog timer"
472	depends on RTC_DRV_M41T80
473	help
474	  If you say Y here you will get support for the
475	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
476
477config RTC_DRV_BQ32K
478	tristate "TI BQ32000"
479	help
480	  If you say Y here you will get support for the TI
481	  BQ32000 I2C RTC chip.
482
483	  This driver can also be built as a module. If so, the module
484	  will be called rtc-bq32k.
485
486config RTC_DRV_DM355EVM
487	tristate "TI DaVinci DM355 EVM RTC"
488	depends on MFD_DM355EVM_MSP
489	help
490	  Supports the RTC firmware in the MSP430 on the DM355 EVM.
491
492config RTC_DRV_TWL92330
493	bool "TI TWL92330/Menelaus"
494	depends on MENELAUS
495	help
496	  If you say yes here you get support for the RTC on the
497	  TWL92330 "Menelaus" power management chip, used with OMAP2
498	  platforms. The support is integrated with the rest of
499	  the Menelaus driver; it's not separate module.
500
501config RTC_DRV_TWL4030
502	tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
503	depends on TWL4030_CORE
504	depends on OF
505	help
506	  If you say yes here you get support for the RTC on the
507	  TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
508
509	  This driver can also be built as a module. If so, the module
510	  will be called rtc-twl.
511
512config RTC_DRV_PALMAS
513	tristate "TI Palmas RTC driver"
514	depends on MFD_PALMAS
515	help
516	  If you say yes here you get support for the RTC of TI PALMA series PMIC
517	  chips.
518
519	  This driver can also be built as a module. If so, the module
520	  will be called rtc-palma.
521
522config RTC_DRV_TPS6586X
523	tristate "TI TPS6586X RTC driver"
524	depends on MFD_TPS6586X
525	help
526	  TI Power Management IC TPS6586X supports RTC functionality
527	  along with alarm. This driver supports the RTC driver for
528	  the TPS6586X RTC module.
529
530config RTC_DRV_TPS65910
531	tristate "TI TPS65910 RTC driver"
532	depends on RTC_CLASS && MFD_TPS65910
533	help
534	  If you say yes here you get support for the RTC on the
535	  TPS65910 chips.
536
537	  This driver can also be built as a module. If so, the module
538	  will be called rtc-tps65910.
539
540config RTC_DRV_TPS80031
541	tristate "TI TPS80031/TPS80032 RTC driver"
542	depends on MFD_TPS80031
543	help
544	  TI Power Management IC TPS80031 supports RTC functionality
545	  along with alarm. This driver supports the RTC driver for
546	  the TPS80031 RTC module.
547
548config RTC_DRV_RC5T583
549	tristate "RICOH 5T583 RTC driver"
550	depends on MFD_RC5T583
551	help
552	  If you say yes here you get support for the RTC on the
553	  RICOH 5T583 chips.
554
555	  This driver can also be built as a module. If so, the module
556	  will be called rtc-rc5t583.
557
558config RTC_DRV_S35390A
559	tristate "Seiko Instruments S-35390A"
560	select BITREVERSE
561	help
562	  If you say yes here you will get support for the Seiko
563	  Instruments S-35390A.
564
565	  This driver can also be built as a module. If so the module
566	  will be called rtc-s35390a.
567
568config RTC_DRV_FM3130
569	tristate "Ramtron FM3130"
570	help
571	  If you say Y here you will get support for the
572	  Ramtron FM3130 RTC chips.
573	  Ramtron FM3130 is a chip with two separate devices inside,
574	  RTC clock and FRAM. This driver provides only RTC functionality.
575
576	  This driver can also be built as a module. If so the module
577	  will be called rtc-fm3130.
578
579config RTC_DRV_RX8010
580	tristate "Epson RX8010SJ"
581	depends on I2C
582	help
583	  If you say yes here you get support for the Epson RX8010SJ RTC
584	  chip.
585
586	  This driver can also be built as a module. If so, the module
587	  will be called rtc-rx8010.
588
589config RTC_DRV_RX8581
590	tristate "Epson RX-8581"
591	help
592	  If you say yes here you will get support for the Epson RX-8581.
593
594	  This driver can also be built as a module. If so the module
595	  will be called rtc-rx8581.
596
597config RTC_DRV_RX8025
598	tristate "Epson RX-8025SA/NB"
599	help
600	  If you say yes here you get support for the Epson
601	  RX-8025SA/NB RTC chips.
602
603	  This driver can also be built as a module. If so, the module
604	  will be called rtc-rx8025.
605
606config RTC_DRV_EM3027
607	tristate "EM Microelectronic EM3027"
608	help
609	  If you say yes here you get support for the EM
610	  Microelectronic EM3027 RTC chips.
611
612	  This driver can also be built as a module. If so, the module
613	  will be called rtc-em3027.
614
615config RTC_DRV_RV8803
616	tristate "Micro Crystal RV8803, Epson RX8900"
617	help
618	  If you say yes here you get support for the Micro Crystal RV8803 and
619	  Epson RX8900 RTC chips.
620
621	  This driver can also be built as a module. If so, the module
622	  will be called rtc-rv8803.
623
624config RTC_DRV_S5M
625	tristate "Samsung S2M/S5M series"
626	depends on MFD_SEC_CORE || COMPILE_TEST
627	select REGMAP_IRQ
628	help
629	  If you say yes here you will get support for the
630	  RTC of Samsung S2MPS14 and S5M PMIC series.
631
632	  This driver can also be built as a module. If so, the module
633	  will be called rtc-s5m.
634
635endif # I2C
636
637comment "SPI RTC drivers"
638
639if SPI_MASTER
640
641config RTC_DRV_M41T93
642	tristate "ST M41T93"
643	help
644	  If you say yes here you will get support for the
645	  ST M41T93 SPI RTC chip.
646
647	  This driver can also be built as a module. If so, the module
648	  will be called rtc-m41t93.
649
650config RTC_DRV_M41T94
651	tristate "ST M41T94"
652	help
653	  If you say yes here you will get support for the
654	  ST M41T94 SPI RTC chip.
655
656	  This driver can also be built as a module. If so, the module
657	  will be called rtc-m41t94.
658
659config RTC_DRV_DS1302
660	tristate "Dallas/Maxim DS1302"
661	depends on SPI
662	help
663	  If you say yes here you get support for the Dallas DS1302 RTC chips.
664
665	  This driver can also be built as a module. If so, the module
666	  will be called rtc-ds1302.
667
668config RTC_DRV_DS1305
669	tristate "Dallas/Maxim DS1305/DS1306"
670	help
671	  Select this driver to get support for the Dallas/Maxim DS1305
672	  and DS1306 real time clock chips. These support a trickle
673	  charger, alarms, and NVRAM in addition to the clock.
674
675	  This driver can also be built as a module. If so, the module
676	  will be called rtc-ds1305.
677
678config RTC_DRV_DS1343
679	select REGMAP_SPI
680	tristate "Dallas/Maxim DS1343/DS1344"
681	help
682	  If you say yes here you get support for the
683	  Dallas/Maxim DS1343 and DS1344 real time clock chips.
684	  Support for trickle charger, alarm is provided.
685
686	  This driver can also be built as a module. If so, the module
687	  will be called rtc-ds1343.
688
689config RTC_DRV_DS1347
690	select REGMAP_SPI
691	tristate "Dallas/Maxim DS1347"
692	help
693	  If you say yes here you get support for the
694	  Dallas/Maxim DS1347 chips.
695
696	  This driver only supports the RTC feature, and not other chip
697	  features such as alarms.
698
699	  This driver can also be built as a module. If so, the module
700	  will be called rtc-ds1347.
701
702config RTC_DRV_DS1390
703	tristate "Dallas/Maxim DS1390/93/94"
704	help
705	  If you say yes here you get support for the
706	  Dallas/Maxim DS1390/93/94 chips.
707
708	  This driver supports the RTC feature and trickle charging but not
709	  other chip features such as alarms.
710
711	  This driver can also be built as a module. If so, the module
712	  will be called rtc-ds1390.
713
714config RTC_DRV_MAX6916
715	tristate "Maxim MAX6916"
716	help
717	  If you say yes here you will get support for the
718	  Maxim MAX6916 SPI RTC chip.
719
720	  This driver only supports the RTC feature, and not other chip
721	  features such as alarms.
722
723	  This driver can also be built as a module. If so, the module
724	  will be called rtc-max6916.
725
726config RTC_DRV_R9701
727	tristate "Epson RTC-9701JE"
728	help
729	  If you say yes here you will get support for the
730	  Epson RTC-9701JE SPI RTC chip.
731
732	  This driver can also be built as a module. If so, the module
733	  will be called rtc-r9701.
734
735config RTC_DRV_RX4581
736	tristate "Epson RX-4581"
737	help
738	  If you say yes here you will get support for the Epson RX-4581.
739
740	  This driver can also be built as a module. If so the module
741	  will be called rtc-rx4581.
742
743config RTC_DRV_RX6110
744	tristate "Epson RX-6110"
745	select REGMAP_SPI
746	help
747	  If you say yes here you will get support for the Epson RX-6610.
748
749	  This driver can also be built as a module. If so the module
750	  will be called rtc-rx6110.
751
752config RTC_DRV_RS5C348
753	tristate "Ricoh RS5C348A/B"
754	help
755	  If you say yes here you get support for the
756	  Ricoh RS5C348A and RS5C348B RTC chips.
757
758	  This driver can also be built as a module. If so, the module
759	  will be called rtc-rs5c348.
760
761config RTC_DRV_MAX6902
762	tristate "Maxim MAX6902"
763	help
764	  If you say yes here you will get support for the
765	  Maxim MAX6902 SPI RTC chip.
766
767	  This driver can also be built as a module. If so, the module
768	  will be called rtc-max6902.
769
770config RTC_DRV_PCF2123
771	tristate "NXP PCF2123"
772	help
773	  If you say yes here you get support for the NXP PCF2123
774	  RTC chip.
775
776	  This driver can also be built as a module. If so, the module
777	  will be called rtc-pcf2123.
778
779config RTC_DRV_MCP795
780	tristate "Microchip MCP795"
781	help
782	  If you say yes here you will get support for the Microchip MCP795.
783
784	  This driver can also be built as a module. If so the module
785	  will be called rtc-mcp795.
786
787endif # SPI_MASTER
788
789#
790# Helper to resolve issues with configs that have SPI enabled but I2C
791# modular.  See SND_SOC_I2C_AND_SPI for more information
792#
793config RTC_I2C_AND_SPI
794	tristate
795	default m if I2C=m
796	default y if I2C=y
797	default y if SPI_MASTER=y
798	select REGMAP_I2C if I2C
799	select REGMAP_SPI if SPI_MASTER
800
801comment "SPI and I2C RTC drivers"
802
803config RTC_DRV_DS3232
804	tristate "Dallas/Maxim DS3232/DS3234"
805	depends on RTC_I2C_AND_SPI
806	help
807	  If you say yes here you get support for Dallas Semiconductor
808	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
809	  with the device, the alarm functionality is supported.
810
811	  This driver can also be built as a module.  If so, the module
812	  will be called rtc-ds3232.
813
814config RTC_DRV_DS3232_HWMON
815	bool "HWMON support for Dallas/Maxim DS3232/DS3234"
816	depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
817	default y
818	help
819	  Say Y here if you want to expose temperature sensor data on
820	  rtc-ds3232
821
822config RTC_DRV_PCF2127
823	tristate "NXP PCF2127"
824	depends on RTC_I2C_AND_SPI
825	help
826	  If you say yes here you get support for the NXP PCF2127/29 RTC
827	  chips.
828
829	  This driver can also be built as a module. If so, the module
830	  will be called rtc-pcf2127.
831
832config RTC_DRV_RV3029C2
833	tristate "Micro Crystal RV3029/3049"
834	depends on RTC_I2C_AND_SPI
835	help
836	  If you say yes here you get support for the Micro Crystal
837	  RV3029 and RV3049 RTC chips.
838
839	  This driver can also be built as a module. If so, the module
840	  will be called rtc-rv3029c2.
841
842config RTC_DRV_RV3029_HWMON
843	bool "HWMON support for RV3029/3049"
844	depends on RTC_DRV_RV3029C2 && HWMON
845	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
846	default y
847	help
848	  Say Y here if you want to expose temperature sensor data on
849	  rtc-rv3029.
850
851comment "Platform RTC drivers"
852
853# this 'CMOS' RTC driver is arch dependent because it requires
854# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
855# global rtc_lock ... it's not yet just another platform_device.
856
857config RTC_DRV_CMOS
858	tristate "PC-style 'CMOS'"
859	depends on X86 || ARM || M32R || PPC || MIPS || SPARC64 || MN10300
860	default y if X86
861	select RTC_MC146818_LIB
862	help
863	  Say "yes" here to get direct support for the real time clock
864	  found in every PC or ACPI-based system, and some other boards.
865	  Specifically the original MC146818, compatibles like those in
866	  PC south bridges, the DS12887 or M48T86, some multifunction
867	  or LPC bus chips, and so on.
868
869	  Your system will need to define the platform device used by
870	  this driver, otherwise it won't be accessible. This means
871	  you can safely enable this driver if you don't know whether
872	  or not your board has this kind of hardware.
873
874	  This driver can also be built as a module. If so, the module
875	  will be called rtc-cmos.
876
877config RTC_DRV_ALPHA
878	bool "Alpha PC-style CMOS"
879	depends on ALPHA
880	select RTC_MC146818_LIB
881	default y
882	help
883	  Direct support for the real-time clock found on every Alpha
884	  system, specifically MC146818 compatibles.  If in doubt, say Y.
885
886config RTC_DRV_VRTC
887	tristate "Virtual RTC for Intel MID platforms"
888	depends on X86_INTEL_MID
889	default y if X86_INTEL_MID
890
891	help
892	Say "yes" here to get direct support for the real time clock
893	found on Moorestown platforms. The VRTC is a emulated RTC that
894	derives its clock source from a real RTC in the PMIC. The MC146818
895	style programming interface is mostly conserved, but any
896	updates are done via IPC calls to the system controller FW.
897
898config RTC_DRV_DS1216
899	tristate "Dallas DS1216"
900	depends on SNI_RM
901	help
902	  If you say yes here you get support for the Dallas DS1216 RTC chips.
903
904config RTC_DRV_DS1286
905	tristate "Dallas DS1286"
906	depends on HAS_IOMEM
907	help
908	  If you say yes here you get support for the Dallas DS1286 RTC chips.
909
910config RTC_DRV_DS1511
911	tristate "Dallas DS1511"
912	depends on HAS_IOMEM
913	help
914	  If you say yes here you get support for the
915	  Dallas DS1511 timekeeping/watchdog chip.
916
917	  This driver can also be built as a module. If so, the module
918	  will be called rtc-ds1511.
919
920config RTC_DRV_DS1553
921	tristate "Maxim/Dallas DS1553"
922	depends on HAS_IOMEM
923	help
924	  If you say yes here you get support for the
925	  Maxim/Dallas DS1553 timekeeping chip.
926
927	  This driver can also be built as a module. If so, the module
928	  will be called rtc-ds1553.
929
930config RTC_DRV_DS1685_FAMILY
931	tristate "Dallas/Maxim DS1685 Family"
932	help
933	  If you say yes here you get support for the Dallas/Maxim DS1685
934	  family of real time chips.  This family includes the DS1685/DS1687,
935	  DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
936	  DS17885/DS17887 chips.
937
938	  This driver can also be built as a module. If so, the module
939	  will be called rtc-ds1685.
940
941choice
942	prompt "Subtype"
943	depends on RTC_DRV_DS1685_FAMILY
944	default RTC_DRV_DS1685
945
946config RTC_DRV_DS1685
947	bool "DS1685/DS1687"
948	help
949	  This enables support for the Dallas/Maxim DS1685/DS1687 real time
950	  clock chip.
951
952	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
953	  systems, as well as EPPC-405-UC modules by electronic system design
954	  GmbH.
955
956config RTC_DRV_DS1689
957	bool "DS1689/DS1693"
958	help
959	  This enables support for the Dallas/Maxim DS1689/DS1693 real time
960	  clock chip.
961
962	  This is an older RTC chip, supplanted by the DS1685/DS1687 above,
963	  which supports a few minor features such as Vcc, Vbat, and Power
964	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
965
966	  It also works for the even older DS1688/DS1691 RTC chips, which are
967	  virtually the same and carry the same model number.  Both chips
968	  have 114 bytes of user NVRAM.
969
970config RTC_DRV_DS17285
971	bool "DS17285/DS17287"
972	help
973	  This enables support for the Dallas/Maxim DS17285/DS17287 real time
974	  clock chip.
975
976	  This chip features 2kb of extended NV-SRAM.  It may possibly be
977	  found in some SGI O2 systems (rare).
978
979config RTC_DRV_DS17485
980	bool "DS17485/DS17487"
981	help
982	  This enables support for the Dallas/Maxim DS17485/DS17487 real time
983	  clock chip.
984
985	  This chip features 4kb of extended NV-SRAM.
986
987config RTC_DRV_DS17885
988	bool "DS17885/DS17887"
989	help
990	  This enables support for the Dallas/Maxim DS17885/DS17887 real time
991	  clock chip.
992
993	  This chip features 8kb of extended NV-SRAM.
994
995endchoice
996
997config RTC_DS1685_PROC_REGS
998	bool "Display register values in /proc"
999	depends on RTC_DRV_DS1685_FAMILY && PROC_FS
1000	help
1001	  Enable this to display a readout of all of the RTC registers in
1002	  /proc/drivers/rtc.  Keep in mind that this can potentially lead
1003	  to lost interrupts, as reading Control Register C will clear
1004	  all pending IRQ flags.
1005
1006	  Unless you are debugging this driver, choose N.
1007
1008config RTC_DS1685_SYSFS_REGS
1009	bool "SysFS access to RTC register bits"
1010	depends on RTC_DRV_DS1685_FAMILY && SYSFS
1011	help
1012	  Enable this to provide access to the RTC control register bits
1013	  in /sys.  Some of the bits are read-write, others are read-only.
1014
1015	  Keep in mind that reading Control C's bits automatically clears
1016	  all pending IRQ flags - this can cause lost interrupts.
1017
1018	  If you know that you need access to these bits, choose Y, Else N.
1019
1020config RTC_DRV_DS1742
1021	tristate "Maxim/Dallas DS1742/1743"
1022	depends on HAS_IOMEM
1023	help
1024	  If you say yes here you get support for the
1025	  Maxim/Dallas DS1742/1743 timekeeping chip.
1026
1027	  This driver can also be built as a module. If so, the module
1028	  will be called rtc-ds1742.
1029
1030config RTC_DRV_DS2404
1031	tristate "Maxim/Dallas DS2404"
1032	help
1033	  If you say yes here you get support for the
1034	  Dallas DS2404 RTC chip.
1035
1036	  This driver can also be built as a module. If so, the module
1037	  will be called rtc-ds2404.
1038
1039config RTC_DRV_DA9052
1040	tristate "Dialog DA9052/DA9053 RTC"
1041	depends on PMIC_DA9052
1042	help
1043	  Say y here to support the RTC driver for Dialog Semiconductor
1044	  DA9052-BC and DA9053-AA/Bx PMICs.
1045
1046config RTC_DRV_DA9055
1047	tristate "Dialog Semiconductor DA9055 RTC"
1048	depends on MFD_DA9055
1049	help
1050	  If you say yes here you will get support for the
1051	  RTC of the Dialog DA9055 PMIC.
1052
1053	  This driver can also be built as a module. If so, the module
1054	  will be called rtc-da9055
1055
1056config RTC_DRV_DA9063
1057	tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1058	depends on MFD_DA9063 || MFD_DA9062
1059	help
1060	  If you say yes here you will get support for the RTC subsystem
1061	  for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1062
1063	  This driver can also be built as a module. If so, the module
1064	  will be called "rtc-da9063".
1065
1066config RTC_DRV_EFI
1067	tristate "EFI RTC"
1068	depends on EFI && !X86
1069	help
1070	  If you say yes here you will get support for the EFI
1071	  Real Time Clock.
1072
1073	  This driver can also be built as a module. If so, the module
1074	  will be called rtc-efi.
1075
1076config RTC_DRV_STK17TA8
1077	tristate "Simtek STK17TA8"
1078	depends on HAS_IOMEM
1079	help
1080	  If you say yes here you get support for the
1081	  Simtek STK17TA8 timekeeping chip.
1082
1083	  This driver can also be built as a module. If so, the module
1084	  will be called rtc-stk17ta8.
1085
1086config RTC_DRV_M48T86
1087	tristate "ST M48T86/Dallas DS12887"
1088	help
1089	  If you say Y here you will get support for the
1090	  ST M48T86 and Dallas DS12887 RTC chips.
1091
1092	  This driver can also be built as a module. If so, the module
1093	  will be called rtc-m48t86.
1094
1095config RTC_DRV_M48T35
1096	tristate "ST M48T35"
1097	depends on HAS_IOMEM
1098	help
1099	  If you say Y here you will get support for the
1100	  ST M48T35 RTC chip.
1101
1102	  This driver can also be built as a module, if so, the module
1103	  will be called "rtc-m48t35".
1104
1105config RTC_DRV_M48T59
1106	tristate "ST M48T59/M48T08/M48T02"
1107	depends on HAS_IOMEM
1108	help
1109	  If you say Y here you will get support for the
1110	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1111
1112	  These chips are usually found in Sun SPARC and UltraSPARC
1113	  workstations.
1114
1115	  This driver can also be built as a module, if so, the module
1116	  will be called "rtc-m48t59".
1117
1118config RTC_DRV_MSM6242
1119	tristate "Oki MSM6242"
1120	depends on HAS_IOMEM
1121	help
1122	  If you say yes here you get support for the Oki MSM6242
1123	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1124
1125	  This driver can also be built as a module. If so, the module
1126	  will be called rtc-msm6242.
1127
1128config RTC_DRV_BQ4802
1129	tristate "TI BQ4802"
1130	depends on HAS_IOMEM
1131	help
1132	  If you say Y here you will get support for the TI
1133	  BQ4802 RTC chip.
1134
1135	  This driver can also be built as a module. If so, the module
1136	  will be called rtc-bq4802.
1137
1138config RTC_DRV_RP5C01
1139	tristate "Ricoh RP5C01"
1140	depends on HAS_IOMEM
1141	help
1142	  If you say yes here you get support for the Ricoh RP5C01
1143	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1144	  and A4000).
1145
1146	  This driver can also be built as a module. If so, the module
1147	  will be called rtc-rp5c01.
1148
1149config RTC_DRV_V3020
1150	tristate "EM Microelectronic V3020"
1151	help
1152	  If you say yes here you will get support for the
1153	  EM Microelectronic v3020 RTC chip.
1154
1155	  This driver can also be built as a module. If so, the module
1156	  will be called rtc-v3020.
1157
1158config RTC_DRV_WM831X
1159	tristate "Wolfson Microelectronics WM831x RTC"
1160	depends on MFD_WM831X
1161	help
1162	  If you say yes here you will get support for the RTC subsystem
1163	  of the Wolfson Microelectronics WM831X series PMICs.
1164
1165	  This driver can also be built as a module. If so, the module
1166	  will be called "rtc-wm831x".
1167
1168config RTC_DRV_WM8350
1169	tristate "Wolfson Microelectronics WM8350 RTC"
1170	depends on MFD_WM8350
1171	help
1172	  If you say yes here you will get support for the RTC subsystem
1173	  of the Wolfson Microelectronics WM8350.
1174
1175	  This driver can also be built as a module. If so, the module
1176	  will be called "rtc-wm8350".
1177
1178config RTC_DRV_SPEAR
1179	tristate "SPEAR ST RTC"
1180	depends on PLAT_SPEAR || COMPILE_TEST
1181	default y
1182	help
1183	 If you say Y here you will get support for the RTC found on
1184	 spear
1185
1186config RTC_DRV_PCF50633
1187	depends on MFD_PCF50633
1188	tristate "NXP PCF50633 RTC"
1189	help
1190	  If you say yes here you get support for the RTC subsystem of the
1191	  NXP PCF50633 used in embedded systems.
1192
1193config RTC_DRV_AB3100
1194	tristate "ST-Ericsson AB3100 RTC"
1195	depends on AB3100_CORE
1196	default y if AB3100_CORE
1197	help
1198	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1199	  support. This chip contains a battery- and capacitor-backed RTC.
1200
1201config RTC_DRV_AB8500
1202	tristate "ST-Ericsson AB8500 RTC"
1203	depends on AB8500_CORE
1204	select RTC_INTF_DEV
1205	select RTC_INTF_DEV_UIE_EMUL
1206	help
1207	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1208	  support. This chip contains a battery- and capacitor-backed RTC.
1209
1210config RTC_DRV_NUC900
1211	tristate "NUC910/NUC920 RTC driver"
1212	depends on ARCH_W90X900 || COMPILE_TEST
1213	help
1214	  If you say yes here you get support for the RTC subsystem of the
1215	  NUC910/NUC920 used in embedded systems.
1216
1217config RTC_DRV_OPAL
1218	tristate "IBM OPAL RTC driver"
1219	depends on PPC_POWERNV
1220	default y
1221	help
1222	  If you say yes here you get support for the PowerNV platform RTC
1223	  driver based on OPAL interfaces.
1224
1225	  This driver can also be built as a module. If so, the module
1226	  will be called rtc-opal.
1227
1228config RTC_DRV_ZYNQMP
1229	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1230	depends on OF
1231	help
1232	  If you say yes here you get support for the RTC controller found on
1233	  Xilinx Zynq Ultrascale+ MPSoC.
1234
1235comment "on-CPU RTC drivers"
1236
1237config RTC_DRV_ASM9260
1238	tristate "Alphascale asm9260 RTC"
1239	depends on MACH_ASM9260 || COMPILE_TEST
1240	help
1241	  If you say yes here you get support for the RTC on the
1242	  Alphascale asm9260 SoC.
1243
1244	  This driver can also be built as a module. If so, the module
1245	  will be called rtc-asm9260.
1246
1247config RTC_DRV_DAVINCI
1248	tristate "TI DaVinci RTC"
1249	depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1250	help
1251	  If you say yes here you get support for the RTC on the
1252	  DaVinci platforms (DM365).
1253
1254	  This driver can also be built as a module. If so, the module
1255	  will be called rtc-davinci.
1256
1257config RTC_DRV_DIGICOLOR
1258	tristate "Conexant Digicolor RTC"
1259	depends on ARCH_DIGICOLOR || COMPILE_TEST
1260	help
1261	  If you say yes here you get support for the RTC on Conexant
1262	  Digicolor platforms. This currently includes the CX92755 SoC.
1263
1264	  This driver can also be built as a module. If so, the module
1265	  will be called rtc-digicolor.
1266
1267config RTC_DRV_IMXDI
1268	tristate "Freescale IMX DryIce Real Time Clock"
1269	depends on ARCH_MXC
1270	help
1271	   Support for Freescale IMX DryIce RTC
1272
1273	   This driver can also be built as a module, if so, the module
1274	   will be called "rtc-imxdi".
1275
1276config RTC_DRV_OMAP
1277	tristate "TI OMAP Real Time Clock"
1278	depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1279	depends on OF
1280	depends on PINCTRL
1281	select GENERIC_PINCONF
1282	help
1283	  Say "yes" here to support the on chip real time clock
1284	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1285
1286	  This driver can also be built as a module, if so, module
1287	  will be called rtc-omap.
1288
1289config HAVE_S3C_RTC
1290	bool
1291	help
1292	  This will include RTC support for Samsung SoCs. If
1293	  you want to include RTC support for any machine, kindly
1294	  select this in the respective mach-XXXX/Kconfig file.
1295
1296config RTC_DRV_S3C
1297	tristate "Samsung S3C series SoC RTC"
1298	depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1299	help
1300	  RTC (Realtime Clock) driver for the clock inbuilt into the
1301	  Samsung S3C24XX series of SoCs. This can provide periodic
1302	  interrupt rates from 1Hz to 64Hz for user programs, and
1303	  wakeup from Alarm.
1304
1305	  The driver currently supports the common features on all the
1306	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1307	  and S3C2442.
1308
1309	  This driver can also be build as a module. If so, the module
1310	  will be called rtc-s3c.
1311
1312config RTC_DRV_EP93XX
1313	tristate "Cirrus Logic EP93XX"
1314	depends on ARCH_EP93XX || COMPILE_TEST
1315	help
1316	  If you say yes here you get support for the
1317	  RTC embedded in the Cirrus Logic EP93XX processors.
1318
1319	  This driver can also be built as a module. If so, the module
1320	  will be called rtc-ep93xx.
1321
1322config RTC_DRV_SA1100
1323	tristate "SA11x0/PXA2xx/PXA910"
1324	depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1325	help
1326	  If you say Y here you will get access to the real time clock
1327	  built into your SA11x0 or PXA2xx CPU.
1328
1329	  To compile this driver as a module, choose M here: the
1330	  module will be called rtc-sa1100.
1331
1332config RTC_DRV_SH
1333	tristate "SuperH On-Chip RTC"
1334	depends on SUPERH || ARCH_RENESAS
1335	help
1336	  Say Y here to enable support for the on-chip RTC found in
1337	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1338
1339	  To compile this driver as a module, choose M here: the
1340	  module will be called rtc-sh.
1341
1342config RTC_DRV_VR41XX
1343	tristate "NEC VR41XX"
1344	depends on CPU_VR41XX || COMPILE_TEST
1345	help
1346	  If you say Y here you will get access to the real time clock
1347	  built into your NEC VR41XX CPU.
1348
1349	  To compile this driver as a module, choose M here: the
1350	  module will be called rtc-vr41xx.
1351
1352config RTC_DRV_PL030
1353	tristate "ARM AMBA PL030 RTC"
1354	depends on ARM_AMBA
1355	help
1356	  If you say Y here you will get access to ARM AMBA
1357	  PrimeCell PL030 RTC found on certain ARM SOCs.
1358
1359	  To compile this driver as a module, choose M here: the
1360	  module will be called rtc-pl030.
1361
1362config RTC_DRV_PL031
1363	tristate "ARM AMBA PL031 RTC"
1364	depends on ARM_AMBA
1365	help
1366	  If you say Y here you will get access to ARM AMBA
1367	  PrimeCell PL031 RTC found on certain ARM SOCs.
1368
1369	  To compile this driver as a module, choose M here: the
1370	  module will be called rtc-pl031.
1371
1372config RTC_DRV_AT32AP700X
1373	tristate "AT32AP700X series RTC"
1374	depends on PLATFORM_AT32AP || COMPILE_TEST
1375	help
1376	  Driver for the internal RTC (Realtime Clock) on Atmel AVR32
1377	  AT32AP700x family processors.
1378
1379config RTC_DRV_AT91RM9200
1380	tristate "AT91RM9200 or some AT91SAM9 RTC"
1381	depends on ARCH_AT91 || COMPILE_TEST
1382	help
1383	  Driver for the internal RTC (Realtime Clock) module found on
1384	  Atmel AT91RM9200's and some  AT91SAM9 chips. On AT91SAM9 chips
1385	  this is powered by the backup power supply.
1386
1387config RTC_DRV_AT91SAM9
1388	tristate "AT91SAM9 RTT as RTC"
1389	depends on ARCH_AT91 || COMPILE_TEST
1390	select MFD_SYSCON
1391	help
1392	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1393	  can be used as an RTC thanks to the backup power supply (e.g. a
1394	  small coin cell battery) which keeps this block and the GPBR
1395	  (General Purpose Backup Registers) block powered when the device
1396	  is shutdown.
1397	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1398	  probably want to use the real RTC block instead of the "RTT as an
1399	  RTC" driver.
1400
1401config RTC_DRV_AU1XXX
1402	tristate "Au1xxx Counter0 RTC support"
1403	depends on MIPS_ALCHEMY
1404	help
1405	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1406	  counter) to be used as a RTC.
1407
1408	  This driver can also be built as a module. If so, the module
1409	  will be called rtc-au1xxx.
1410
1411config RTC_DRV_BFIN
1412	tristate "Blackfin On-Chip RTC"
1413	depends on BLACKFIN && !BF561
1414	help
1415	  If you say yes here you will get support for the
1416	  Blackfin On-Chip Real Time Clock.
1417
1418	  This driver can also be built as a module. If so, the module
1419	  will be called rtc-bfin.
1420
1421config RTC_DRV_RS5C313
1422	tristate "Ricoh RS5C313"
1423	depends on SH_LANDISK
1424	help
1425	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1426
1427config RTC_DRV_GENERIC
1428	tristate "Generic RTC support"
1429	# Please consider writing a new RTC driver instead of using the generic
1430	# RTC abstraction
1431	depends on PARISC || M68K || PPC || SUPERH32 || COMPILE_TEST
1432	help
1433	  Say Y or M here to enable RTC support on systems using the generic
1434	  RTC abstraction. If you do not know what you are doing, you should
1435	  just say Y.
1436
1437config RTC_DRV_PXA
1438	tristate "PXA27x/PXA3xx"
1439	depends on ARCH_PXA
1440	select RTC_DRV_SA1100
1441	help
1442         If you say Y here you will get access to the real time clock
1443         built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1444         consisting of an SA1100 compatible RTC and the extended PXA RTC.
1445
1446	 This RTC driver uses PXA RTC registers available since pxa27x
1447	 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1448
1449config RTC_DRV_VT8500
1450	tristate "VIA/WonderMedia 85xx SoC RTC"
1451	depends on ARCH_VT8500 || COMPILE_TEST
1452	help
1453	  If you say Y here you will get access to the real time clock
1454	  built into your VIA VT8500 SoC or its relatives.
1455
1456
1457config RTC_DRV_SUN4V
1458	bool "SUN4V Hypervisor RTC"
1459	depends on SPARC64
1460	help
1461	  If you say Y here you will get support for the Hypervisor
1462	  based RTC on SUN4V systems.
1463
1464config RTC_DRV_SUN6I
1465	bool "Allwinner A31 RTC"
1466	default MACH_SUN6I || MACH_SUN8I
1467	depends on COMMON_CLK
1468	depends on ARCH_SUNXI || COMPILE_TEST
1469	help
1470	  If you say Y here you will get support for the RTC found in
1471	  some Allwinner SoCs like the A31 or the A64.
1472
1473config RTC_DRV_SUNXI
1474	tristate "Allwinner sun4i/sun7i RTC"
1475	depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1476	help
1477	  If you say Y here you will get support for the RTC found on
1478	  Allwinner A10/A20.
1479
1480config RTC_DRV_STARFIRE
1481	bool "Starfire RTC"
1482	depends on SPARC64
1483	help
1484	  If you say Y here you will get support for the RTC found on
1485	  Starfire systems.
1486
1487config RTC_DRV_TX4939
1488	tristate "TX4939 SoC"
1489	depends on SOC_TX4939
1490	help
1491	  Driver for the internal RTC (Realtime Clock) module found on
1492	  Toshiba TX4939 SoC.
1493
1494config RTC_DRV_MV
1495	tristate "Marvell SoC RTC"
1496	depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1497	help
1498	  If you say yes here you will get support for the in-chip RTC
1499	  that can be found in some of Marvell's SoC devices, such as
1500	  the Kirkwood 88F6281 and 88F6192.
1501
1502	  This driver can also be built as a module. If so, the module
1503	  will be called rtc-mv.
1504
1505config RTC_DRV_ARMADA38X
1506	tristate "Armada 38x Marvell SoC RTC"
1507	depends on ARCH_MVEBU || COMPILE_TEST
1508	help
1509	  If you say yes here you will get support for the in-chip RTC
1510	  that can be found in the Armada 38x Marvell's SoC device
1511
1512	  This driver can also be built as a module. If so, the module
1513	  will be called armada38x-rtc.
1514
1515config RTC_DRV_FTRTC010
1516	tristate "Faraday Technology FTRTC010 RTC"
1517	depends on HAS_IOMEM
1518	default ARCH_GEMINI
1519	help
1520	  If you say Y here you will get support for the
1521	  Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
1522
1523	  This driver can also be built as a module. If so, the module
1524	  will be called rtc-ftrtc010.
1525
1526config RTC_DRV_PS3
1527	tristate "PS3 RTC"
1528	depends on PPC_PS3
1529	help
1530	  If you say yes here you will get support for the RTC on PS3.
1531
1532	  This driver can also be built as a module. If so, the module
1533	  will be called rtc-ps3.
1534
1535config RTC_DRV_COH901331
1536	tristate "ST-Ericsson COH 901 331 RTC"
1537	depends on ARCH_U300 || COMPILE_TEST
1538	help
1539	  If you say Y here you will get access to ST-Ericsson
1540	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
1541	  Platforms.
1542
1543	  This driver can also be built as a module. If so, the module
1544	  will be called "rtc-coh901331".
1545
1546
1547config RTC_DRV_STMP
1548	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1549	depends on ARCH_MXS || COMPILE_TEST
1550	select STMP_DEVICE
1551	help
1552	  If you say yes here you will get support for the onboard
1553	  STMP3xxx/i.MX23/i.MX28 RTC.
1554
1555	  This driver can also be built as a module. If so, the module
1556	  will be called rtc-stmp3xxx.
1557
1558config RTC_DRV_PCAP
1559	tristate "PCAP RTC"
1560	depends on EZX_PCAP
1561	help
1562	  If you say Y here you will get support for the RTC found on
1563	  the PCAP2 ASIC used on some Motorola phones.
1564
1565config RTC_DRV_MC13XXX
1566	depends on MFD_MC13XXX
1567	tristate "Freescale MC13xxx RTC"
1568	help
1569	  This enables support for the RTCs found on Freescale's PMICs
1570	  MC13783 and MC13892.
1571
1572config RTC_DRV_MPC5121
1573	tristate "Freescale MPC5121 built-in RTC"
1574	depends on PPC_MPC512x || PPC_MPC52xx
1575	help
1576	  If you say yes here you will get support for the
1577	  built-in RTC on MPC5121 or on MPC5200.
1578
1579	  This driver can also be built as a module. If so, the module
1580	  will be called rtc-mpc5121.
1581
1582config RTC_DRV_JZ4740
1583	tristate "Ingenic JZ4740 SoC"
1584	depends on MACH_INGENIC || COMPILE_TEST
1585	help
1586	  If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1587	  controllers.
1588
1589	  This driver can also be buillt as a module. If so, the module
1590	  will be called rtc-jz4740.
1591
1592config RTC_DRV_LPC24XX
1593	tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1594	depends on ARCH_LPC18XX || COMPILE_TEST
1595	depends on OF && HAS_IOMEM
1596	help
1597	  This enables support for the NXP RTC found which can be found on
1598	  NXP LPC178x/18xx/408x/43xx devices.
1599
1600	  If you have one of the devices above enable this driver to use
1601	  the hardware RTC. This driver can also be built as a module. If
1602	  so, the module will be called rtc-lpc24xx.
1603
1604config RTC_DRV_LPC32XX
1605	depends on ARCH_LPC32XX || COMPILE_TEST
1606	tristate "NXP LPC32XX RTC"
1607	help
1608	  This enables support for the NXP RTC in the LPC32XX
1609
1610	  This driver can also be built as a module. If so, the module
1611	  will be called rtc-lpc32xx.
1612
1613config RTC_DRV_PM8XXX
1614	tristate "Qualcomm PMIC8XXX RTC"
1615	depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1616	help
1617	  If you say yes here you get support for the
1618	  Qualcomm PMIC8XXX RTC.
1619
1620	  To compile this driver as a module, choose M here: the
1621	  module will be called rtc-pm8xxx.
1622
1623config RTC_DRV_TEGRA
1624	tristate "NVIDIA Tegra Internal RTC driver"
1625	depends on ARCH_TEGRA || COMPILE_TEST
1626	help
1627	  If you say yes here you get support for the
1628	  Tegra 200 series internal RTC module.
1629
1630	  This drive can also be built as a module. If so, the module
1631	  will be called rtc-tegra.
1632
1633config RTC_DRV_TILE
1634	tristate "Tilera hypervisor RTC support"
1635	depends on TILE
1636	help
1637	  Enable support for the Linux driver side of the Tilera
1638	  hypervisor's real-time clock interface.
1639
1640config RTC_DRV_PUV3
1641	tristate "PKUnity v3 RTC support"
1642	depends on ARCH_PUV3
1643	help
1644	  This enables support for the RTC in the PKUnity-v3 SoCs.
1645
1646	  This drive can also be built as a module. If so, the module
1647	  will be called rtc-puv3.
1648
1649config RTC_DRV_LOONGSON1
1650	tristate "loongson1 RTC support"
1651	depends on MACH_LOONGSON32
1652	help
1653	  This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1654	  counter) to be used as a RTC.
1655
1656	  This driver can also be built as a module. If so, the module
1657	  will be called rtc-ls1x.
1658
1659config RTC_DRV_MXC
1660	tristate "Freescale MXC Real Time Clock"
1661	depends on ARCH_MXC
1662	help
1663	   If you say yes here you get support for the Freescale MXC
1664	   RTC module.
1665
1666	   This driver can also be built as a module, if so, the module
1667	   will be called "rtc-mxc".
1668
1669config RTC_DRV_SNVS
1670	tristate "Freescale SNVS RTC support"
1671	select REGMAP_MMIO
1672	depends on HAS_IOMEM
1673	depends on OF
1674	help
1675	   If you say yes here you get support for the Freescale SNVS
1676	   Low Power (LP) RTC module.
1677
1678	   This driver can also be built as a module, if so, the module
1679	   will be called "rtc-snvs".
1680
1681config RTC_DRV_SIRFSOC
1682	tristate "SiRFSOC RTC"
1683	depends on ARCH_SIRF
1684	help
1685	  Say "yes" here to support the real time clock on SiRF SOC chips.
1686	  This driver can also be built as a module called rtc-sirfsoc.
1687
1688config RTC_DRV_ST_LPC
1689	tristate "STMicroelectronics LPC RTC"
1690	depends on ARCH_STI
1691	depends on OF
1692	help
1693	  Say Y here to include STMicroelectronics Low Power Controller
1694	  (LPC) based RTC support.
1695
1696	  To compile this driver as a module, choose M here: the
1697	  module will be called rtc-st-lpc.
1698
1699config RTC_DRV_MOXART
1700	tristate "MOXA ART RTC"
1701	depends on ARCH_MOXART || COMPILE_TEST
1702	help
1703	   If you say yes here you get support for the MOXA ART
1704	   RTC module.
1705
1706	   This driver can also be built as a module. If so, the module
1707	   will be called rtc-moxart
1708
1709config RTC_DRV_MT6397
1710	tristate "Mediatek Real Time Clock driver"
1711	depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1712	help
1713	  This selects the Mediatek(R) RTC driver. RTC is part of Mediatek
1714	  MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1715	  Mediatek(R) RTC driver.
1716
1717	  If you want to use Mediatek(R) RTC interface, select Y or M here.
1718
1719config RTC_DRV_XGENE
1720	tristate "APM X-Gene RTC"
1721	depends on HAS_IOMEM
1722	depends on ARCH_XGENE || COMPILE_TEST
1723	help
1724	  If you say yes here you get support for the APM X-Gene SoC real time
1725	  clock.
1726
1727	  This driver can also be built as a module, if so, the module
1728	  will be called "rtc-xgene".
1729
1730config RTC_DRV_PIC32
1731	tristate "Microchip PIC32 RTC"
1732	depends on MACH_PIC32
1733	default y
1734	help
1735	   If you say yes here you get support for the PIC32 RTC module.
1736
1737	   This driver can also be built as a module. If so, the module
1738	   will be called rtc-pic32
1739
1740config RTC_DRV_R7301
1741	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1742	select REGMAP_MMIO
1743	depends on OF && HAS_IOMEM
1744	help
1745	   If you say yes here you get support for the EPSON TOYOCOM
1746	   RTC-7301SF/DG chips.
1747
1748	   This driver can also be built as a module. If so, the module
1749	   will be called rtc-r7301.
1750
1751config RTC_DRV_STM32
1752	tristate "STM32 RTC"
1753	select REGMAP_MMIO
1754	depends on ARCH_STM32 || COMPILE_TEST
1755	help
1756	   If you say yes here you get support for the STM32 On-Chip
1757	   Real Time Clock.
1758
1759	   This driver can also be built as a module, if so, the module
1760	   will be called "rtc-stm32".
1761
1762config RTC_DRV_CPCAP
1763	depends on MFD_CPCAP
1764	tristate "Motorola CPCAP RTC"
1765	help
1766	   Say y here for CPCAP rtc found on some Motorola phones
1767	   and tablets such as Droid 4.
1768
1769config RTC_DRV_RTD119X
1770	bool "Realtek RTD129x RTC"
1771	depends on ARCH_REALTEK || COMPILE_TEST
1772	default ARCH_REALTEK
1773	help
1774	  If you say yes here, you get support for the RTD1295 SoC
1775	  Real Time Clock.
1776
1777comment "HID Sensor RTC drivers"
1778
1779config RTC_DRV_HID_SENSOR_TIME
1780	tristate "HID Sensor Time"
1781	depends on USB_HID
1782	select IIO
1783	select HID_SENSOR_HUB
1784	select HID_SENSOR_IIO_COMMON
1785	help
1786	  Say yes here to build support for the HID Sensors of type Time.
1787	  This drivers makes such sensors available as RTCs.
1788
1789	  If this driver is compiled as a module, it will be named
1790	  rtc-hid-sensor-time.
1791
1792config RTC_DRV_GOLDFISH
1793	tristate "Goldfish Real Time Clock"
1794	depends on MIPS && (GOLDFISH || COMPILE_TEST)
1795	help
1796	  Say yes to enable RTC driver for the Goldfish based virtual platform.
1797
1798	  Goldfish is a code name for the virtual platform developed by Google
1799	  for Android emulation.
1800
1801endif # RTC_CLASS
1802