xref: /linux/drivers/rtc/Kconfig (revision 27258e448eb301cf89e351df87aa8cb916653bf2)
1#
2# RTC class/drivers configuration
3#
4
5config RTC_LIB
6	tristate
7
8menuconfig RTC_CLASS
9	tristate "Real Time Clock"
10	default n
11	depends on !S390
12	select RTC_LIB
13	help
14	  Generic RTC class support. If you say yes here, you will
15 	  be allowed to plug one or more RTCs to your system. You will
16	  probably want to enable one or more of the interfaces below.
17
18	  This driver can also be built as a module. If so, the module
19	  will be called rtc-core.
20
21if RTC_CLASS
22
23config RTC_HCTOSYS
24	bool "Set system time from RTC on startup and resume"
25	depends on RTC_CLASS = y
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 = y
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_DEBUG
56	bool "RTC debug support"
57	depends on RTC_CLASS = y
58	help
59	  Say yes here to enable debugging support in the RTC framework
60	  and individual RTC drivers.
61
62comment "RTC interfaces"
63
64config RTC_INTF_SYSFS
65	boolean "/sys/class/rtc/rtcN (sysfs)"
66	depends on SYSFS
67	default RTC_CLASS
68	help
69	  Say yes here if you want to use your RTCs using sysfs interfaces,
70	  /sys/class/rtc/rtc0 through /sys/.../rtcN.
71
72	  If unsure, say Y.
73
74config RTC_INTF_PROC
75	boolean "/proc/driver/rtc (procfs for rtc0)"
76	depends on PROC_FS
77	default RTC_CLASS
78	help
79	  Say yes here if you want to use your first RTC through the proc
80	  interface, /proc/driver/rtc. Other RTCs will not be available
81	  through that API.
82
83	  If unsure, say Y.
84
85config RTC_INTF_DEV
86	boolean "/dev/rtcN (character devices)"
87	default RTC_CLASS
88	help
89	  Say yes here if you want to use your RTCs using the /dev
90	  interfaces, which "udev" sets up as /dev/rtc0 through
91	  /dev/rtcN.
92
93	  You may want to set up a symbolic link so one of these
94	  can be accessed as /dev/rtc, which is a name
95	  expected by "hwclock" and some other programs. Recent
96	  versions of "udev" are known to set up the symlink for you.
97
98	  If unsure, say Y.
99
100config RTC_INTF_DEV_UIE_EMUL
101	bool "RTC UIE emulation on dev interface"
102	depends on RTC_INTF_DEV
103	help
104	  Provides an emulation for RTC_UIE if the underlying rtc chip
105	  driver does not expose RTC_UIE ioctls. Those requests generate
106	  once-per-second update interrupts, used for synchronization.
107
108	  The emulation code will read the time from the hardware
109	  clock several times per second, please enable this option
110	  only if you know that you really need it.
111
112config RTC_DRV_TEST
113	tristate "Test driver/device"
114	help
115	  If you say yes here you get support for the
116	  RTC test driver. It's a software RTC which can be
117	  used to test the RTC subsystem APIs. It gets
118	  the time from the system clock.
119	  You want this driver only if you are doing development
120	  on the RTC subsystem. Please read the source code
121	  for further details.
122
123	  This driver can also be built as a module. If so, the module
124	  will be called rtc-test.
125
126comment "I2C RTC drivers"
127	depends on I2C
128
129if I2C
130
131config RTC_DRV_DS1307
132	tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
133	help
134	  If you say yes here you get support for various compatible RTC
135	  chips (often with battery backup) connected with I2C. This driver
136	  should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
137	  EPSON RX-8025 and probably other chips. In some cases the RTC
138	  must already have been initialized (by manufacturing or a
139	  bootloader).
140
141	  The first seven registers on these chips hold an RTC, and other
142	  registers may add features such as NVRAM, a trickle charger for
143	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
144	  sysfs, but other chip features may not be available.
145
146	  This driver can also be built as a module. If so, the module
147	  will be called rtc-ds1307.
148
149config RTC_DRV_DS1374
150	tristate "Dallas/Maxim DS1374"
151	depends on RTC_CLASS && I2C
152	help
153	  If you say yes here you get support for Dallas Semiconductor
154	  DS1374 real-time clock chips. If an interrupt is associated
155	  with the device, the alarm functionality is supported.
156
157	  This driver can also be built as a module. If so, the module
158	  will be called rtc-ds1374.
159
160config RTC_DRV_DS1672
161	tristate "Dallas/Maxim DS1672"
162	help
163	  If you say yes here you get support for the
164	  Dallas/Maxim DS1672 timekeeping chip.
165
166	  This driver can also be built as a module. If so, the module
167	  will be called rtc-ds1672.
168
169config RTC_DRV_MAX6900
170	tristate "Maxim MAX6900"
171	help
172	  If you say yes here you will get support for the
173	  Maxim MAX6900 I2C RTC chip.
174
175	  This driver can also be built as a module. If so, the module
176	  will be called rtc-max6900.
177
178config RTC_DRV_RS5C372
179	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
180	help
181	  If you say yes here you get support for the
182	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
183
184	  This driver can also be built as a module. If so, the module
185	  will be called rtc-rs5c372.
186
187config RTC_DRV_ISL1208
188	tristate "Intersil ISL1208"
189	help
190	  If you say yes here you get support for the
191	  Intersil ISL1208 RTC chip.
192
193	  This driver can also be built as a module. If so, the module
194	  will be called rtc-isl1208.
195
196config RTC_DRV_X1205
197	tristate "Xicor/Intersil X1205"
198	help
199	  If you say yes here you get support for the
200	  Xicor/Intersil X1205 RTC chip.
201
202	  This driver can also be built as a module. If so, the module
203	  will be called rtc-x1205.
204
205config RTC_DRV_PCF8563
206	tristate "Philips PCF8563/Epson RTC8564"
207	help
208	  If you say yes here you get support for the
209	  Philips PCF8563 RTC chip. The Epson RTC8564
210	  should work as well.
211
212	  This driver can also be built as a module. If so, the module
213	  will be called rtc-pcf8563.
214
215config RTC_DRV_PCF8583
216	tristate "Philips PCF8583"
217	help
218	  If you say yes here you get support for the Philips PCF8583
219	  RTC chip found on Acorn RiscPCs. This driver supports the
220	  platform specific method of retrieving the current year from
221	  the RTC's SRAM. It will work on other platforms with the same
222	  chip, but the year will probably have to be tweaked.
223
224	  This driver can also be built as a module. If so, the module
225	  will be called rtc-pcf8583.
226
227config RTC_DRV_M41T80
228	tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
229	help
230	  If you say Y here you will get support for the ST M41T60
231	  and M41T80 RTC chips series. Currently, the following chips are
232	  supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
233	  M41ST85, and M41ST87.
234
235	  This driver can also be built as a module. If so, the module
236	  will be called rtc-m41t80.
237
238config RTC_DRV_M41T80_WDT
239	bool "ST M41T65/M41T80 series RTC watchdog timer"
240	depends on RTC_DRV_M41T80
241	help
242	  If you say Y here you will get support for the
243	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
244
245config RTC_DRV_DM355EVM
246	tristate "TI DaVinci DM355 EVM RTC"
247	depends on MFD_DM355EVM_MSP
248	help
249	  Supports the RTC firmware in the MSP430 on the DM355 EVM.
250
251config RTC_DRV_TWL92330
252	boolean "TI TWL92330/Menelaus"
253	depends on MENELAUS
254	help
255	  If you say yes here you get support for the RTC on the
256	  TWL92330 "Menelaus" power management chip, used with OMAP2
257	  platforms. The support is integrated with the rest of
258	  the Menelaus driver; it's not separate module.
259
260config RTC_DRV_TWL4030
261	tristate "TI TWL4030/TWL5030/TPS659x0"
262	depends on RTC_CLASS && TWL4030_CORE
263	help
264	  If you say yes here you get support for the RTC on the
265	  TWL4030 family chips, used mostly with OMAP3 platforms.
266
267	  This driver can also be built as a module. If so, the module
268	  will be called rtc-twl4030.
269
270config RTC_DRV_S35390A
271	tristate "Seiko Instruments S-35390A"
272	select BITREVERSE
273	help
274	  If you say yes here you will get support for the Seiko
275	  Instruments S-35390A.
276
277	  This driver can also be built as a module. If so the module
278	  will be called rtc-s35390a.
279
280config RTC_DRV_FM3130
281	tristate "Ramtron FM3130"
282	help
283	  If you say Y here you will get support for the
284	  Ramtron FM3130 RTC chips.
285	  Ramtron FM3130 is a chip with two separate devices inside,
286	  RTC clock and FRAM. This driver provides only RTC functionality.
287
288	  This driver can also be built as a module. If so the module
289	  will be called rtc-fm3130.
290
291config RTC_DRV_RX8581
292	tristate "Epson RX-8581"
293	help
294	  If you say yes here you will get support for the Epson RX-8581.
295
296	  This driver can also be built as a module. If so the module
297	  will be called rtc-rx8581.
298
299config RTC_DRV_RX8025
300	tristate "Epson RX-8025SA/NB"
301	help
302	  If you say yes here you get support for the Epson
303	  RX-8025SA/NB RTC chips.
304
305	  This driver can also be built as a module. If so, the module
306	  will be called rtc-rx8025.
307
308endif # I2C
309
310comment "SPI RTC drivers"
311
312if SPI_MASTER
313
314config RTC_DRV_M41T94
315	tristate "ST M41T94"
316	help
317	  If you say yes here you will get support for the
318	  ST M41T94 SPI RTC chip.
319
320	  This driver can also be built as a module. If so, the module
321	  will be called rtc-m41t94.
322
323config RTC_DRV_DS1305
324	tristate "Dallas/Maxim DS1305/DS1306"
325	help
326	  Select this driver to get support for the Dallas/Maxim DS1305
327	  and DS1306 real time clock chips. These support a trickle
328	  charger, alarms, and NVRAM in addition to the clock.
329
330	  This driver can also be built as a module. If so, the module
331	  will be called rtc-ds1305.
332
333config RTC_DRV_DS1390
334	tristate "Dallas/Maxim DS1390/93/94"
335	help
336	  If you say yes here you get support for the
337	  Dallas/Maxim DS1390/93/94 chips.
338
339	  This driver only supports the RTC feature, and not other chip
340	  features such as alarms and trickle charging.
341
342	  This driver can also be built as a module. If so, the module
343	  will be called rtc-ds1390.
344
345config RTC_DRV_MAX6902
346	tristate "Maxim MAX6902"
347	help
348	  If you say yes here you will get support for the
349	  Maxim MAX6902 SPI RTC chip.
350
351	  This driver can also be built as a module. If so, the module
352	  will be called rtc-max6902.
353
354config RTC_DRV_R9701
355	tristate "Epson RTC-9701JE"
356	help
357	  If you say yes here you will get support for the
358	  Epson RTC-9701JE SPI RTC chip.
359
360	  This driver can also be built as a module. If so, the module
361	  will be called rtc-r9701.
362
363config RTC_DRV_RS5C348
364	tristate "Ricoh RS5C348A/B"
365	help
366	  If you say yes here you get support for the
367	  Ricoh RS5C348A and RS5C348B RTC chips.
368
369	  This driver can also be built as a module. If so, the module
370	  will be called rtc-rs5c348.
371
372config RTC_DRV_DS3234
373	tristate "Maxim/Dallas DS3234"
374	help
375	  If you say yes here you get support for the
376	  Maxim/Dallas DS3234 SPI RTC chip.
377
378	  This driver can also be built as a module. If so, the module
379	  will be called rtc-ds3234.
380
381endif # SPI_MASTER
382
383comment "Platform RTC drivers"
384
385# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
386# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
387# global rtc_lock ... it's not yet just another platform_device.
388
389config RTC_DRV_CMOS
390	tristate "PC-style 'CMOS'"
391	depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
392	default y if X86
393	help
394	  Say "yes" here to get direct support for the real time clock
395	  found in every PC or ACPI-based system, and some other boards.
396	  Specifically the original MC146818, compatibles like those in
397	  PC south bridges, the DS12887 or M48T86, some multifunction
398	  or LPC bus chips, and so on.
399
400	  Your system will need to define the platform device used by
401	  this driver, otherwise it won't be accessible. This means
402	  you can safely enable this driver if you don't know whether
403	  or not your board has this kind of hardware.
404
405	  This driver can also be built as a module. If so, the module
406	  will be called rtc-cmos.
407
408config RTC_DRV_DS1216
409	tristate "Dallas DS1216"
410	depends on SNI_RM
411	help
412	  If you say yes here you get support for the Dallas DS1216 RTC chips.
413
414config RTC_DRV_DS1286
415	tristate "Dallas DS1286"
416	help
417	  If you say yes here you get support for the Dallas DS1286 RTC chips.
418
419config RTC_DRV_DS1302
420	tristate "Dallas DS1302"
421	depends on SH_SECUREEDGE5410
422	help
423	  If you say yes here you get support for the Dallas DS1302 RTC chips.
424
425config RTC_DRV_DS1511
426	tristate "Dallas DS1511"
427	depends on RTC_CLASS
428	help
429	  If you say yes here you get support for the
430	  Dallas DS1511 timekeeping/watchdog chip.
431
432	  This driver can also be built as a module. If so, the module
433	  will be called rtc-ds1511.
434
435config RTC_DRV_DS1553
436	tristate "Maxim/Dallas DS1553"
437	help
438	  If you say yes here you get support for the
439	  Maxim/Dallas DS1553 timekeeping chip.
440
441	  This driver can also be built as a module. If so, the module
442	  will be called rtc-ds1553.
443
444config RTC_DRV_DS1742
445	tristate "Maxim/Dallas DS1742/1743"
446	help
447	  If you say yes here you get support for the
448	  Maxim/Dallas DS1742/1743 timekeeping chip.
449
450	  This driver can also be built as a module. If so, the module
451	  will be called rtc-ds1742.
452
453config RTC_DRV_EFI
454	tristate "EFI RTC"
455	depends on IA64
456	help
457	  If you say yes here you will get support for the EFI
458	  Real Time Clock.
459
460	  This driver can also be built as a module. If so, the module
461	  will be called rtc-efi.
462
463config RTC_DRV_STK17TA8
464	tristate "Simtek STK17TA8"
465	depends on RTC_CLASS
466	help
467	  If you say yes here you get support for the
468	  Simtek STK17TA8 timekeeping chip.
469
470	  This driver can also be built as a module. If so, the module
471	  will be called rtc-stk17ta8.
472
473config RTC_DRV_M48T86
474	tristate "ST M48T86/Dallas DS12887"
475	help
476	  If you say Y here you will get support for the
477	  ST M48T86 and Dallas DS12887 RTC chips.
478
479	  This driver can also be built as a module. If so, the module
480	  will be called rtc-m48t86.
481
482config RTC_DRV_M48T35
483	tristate "ST M48T35"
484	help
485	  If you say Y here you will get support for the
486	  ST M48T35 RTC chip.
487
488	  This driver can also be built as a module, if so, the module
489	  will be called "rtc-m48t35".
490
491config RTC_DRV_M48T59
492	tristate "ST M48T59/M48T08/M48T02"
493	help
494	  If you say Y here you will get support for the
495	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
496
497	  These chips are usually found in Sun SPARC and UltraSPARC
498	  workstations.
499
500	  This driver can also be built as a module, if so, the module
501	  will be called "rtc-m48t59".
502
503config RTC_DRV_BQ4802
504	tristate "TI BQ4802"
505	help
506	  If you say Y here you will get support for the TI
507	  BQ4802 RTC chip.
508
509	  This driver can also be built as a module. If so, the module
510	  will be called rtc-bq4802.
511
512config RTC_DRV_V3020
513	tristate "EM Microelectronic V3020"
514	help
515	  If you say yes here you will get support for the
516	  EM Microelectronic v3020 RTC chip.
517
518	  This driver can also be built as a module. If so, the module
519	  will be called rtc-v3020.
520
521config RTC_DRV_WM831X
522	tristate "Wolfson Microelectronics WM831x RTC"
523	depends on MFD_WM831X
524	help
525	  If you say yes here you will get support for the RTC subsystem
526	  of the Wolfson Microelectronics WM831X series PMICs.
527
528	  This driver can also be built as a module. If so, the module
529	  will be called "rtc-wm831x".
530
531config RTC_DRV_WM8350
532	tristate "Wolfson Microelectronics WM8350 RTC"
533	depends on MFD_WM8350
534	help
535	  If you say yes here you will get support for the RTC subsystem
536	  of the Wolfson Microelectronics WM8350.
537
538	  This driver can also be built as a module. If so, the module
539	  will be called "rtc-wm8350".
540
541config RTC_DRV_PCF50633
542	depends on MFD_PCF50633
543	tristate "NXP PCF50633 RTC"
544	help
545	  If you say yes here you get support for the RTC subsystem of the
546	  NXP PCF50633 used in embedded systems.
547
548config RTC_DRV_AB3100
549	tristate "ST-Ericsson AB3100 RTC"
550	depends on AB3100_CORE
551	default y if AB3100_CORE
552	help
553	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
554	  support. This chip contains a battery- and capacitor-backed RTC.
555
556
557comment "on-CPU RTC drivers"
558
559config RTC_DRV_OMAP
560	tristate "TI OMAP1"
561	depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730
562	help
563	  Say "yes" here to support the real time clock on TI OMAP1 chips.
564	  This driver can also be built as a module called rtc-omap.
565
566config RTC_DRV_S3C
567	tristate "Samsung S3C series SoC RTC"
568	depends on ARCH_S3C2410
569	help
570	  RTC (Realtime Clock) driver for the clock inbuilt into the
571	  Samsung S3C24XX series of SoCs. This can provide periodic
572	  interrupt rates from 1Hz to 64Hz for user programs, and
573	  wakeup from Alarm.
574
575	  The driver currently supports the common features on all the
576	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
577	  and S3C2442.
578
579	  This driver can also be build as a module. If so, the module
580	  will be called rtc-s3c.
581
582config RTC_DRV_EP93XX
583	tristate "Cirrus Logic EP93XX"
584	depends on ARCH_EP93XX
585	help
586	  If you say yes here you get support for the
587	  RTC embedded in the Cirrus Logic EP93XX processors.
588
589	  This driver can also be built as a module. If so, the module
590	  will be called rtc-ep93xx.
591
592config RTC_DRV_SA1100
593	tristate "SA11x0/PXA2xx"
594	depends on ARCH_SA1100 || ARCH_PXA
595	help
596	  If you say Y here you will get access to the real time clock
597	  built into your SA11x0 or PXA2xx CPU.
598
599	  To compile this driver as a module, choose M here: the
600	  module will be called rtc-sa1100.
601
602config RTC_DRV_SH
603	tristate "SuperH On-Chip RTC"
604	depends on RTC_CLASS && SUPERH && HAVE_CLK
605	help
606	  Say Y here to enable support for the on-chip RTC found in
607	  most SuperH processors.
608
609 	  To compile this driver as a module, choose M here: the
610	  module will be called rtc-sh.
611
612config RTC_DRV_VR41XX
613	tristate "NEC VR41XX"
614	depends on CPU_VR41XX
615	help
616	  If you say Y here you will get access to the real time clock
617	  built into your NEC VR41XX CPU.
618
619	  To compile this driver as a module, choose M here: the
620	  module will be called rtc-vr41xx.
621
622config RTC_DRV_PL030
623	tristate "ARM AMBA PL030 RTC"
624	depends on ARM_AMBA
625	help
626	  If you say Y here you will get access to ARM AMBA
627	  PrimeCell PL030 RTC found on certain ARM SOCs.
628
629	  To compile this driver as a module, choose M here: the
630	  module will be called rtc-pl030.
631
632config RTC_DRV_PL031
633	tristate "ARM AMBA PL031 RTC"
634	depends on ARM_AMBA
635	help
636	  If you say Y here you will get access to ARM AMBA
637	  PrimeCell PL031 RTC found on certain ARM SOCs.
638
639	  To compile this driver as a module, choose M here: the
640	  module will be called rtc-pl031.
641
642config RTC_DRV_AT32AP700X
643	tristate "AT32AP700X series RTC"
644	depends on PLATFORM_AT32AP
645	help
646	  Driver for the internal RTC (Realtime Clock) on Atmel AVR32
647	  AT32AP700x family processors.
648
649config RTC_DRV_AT91RM9200
650	tristate "AT91RM9200 or AT91SAM9RL"
651	depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL
652	help
653	  Driver for the internal RTC (Realtime Clock) module found on
654	  Atmel AT91RM9200's and AT91SAM9RL chips. On SAM9RL chips
655	  this is powered by the backup power supply.
656
657config RTC_DRV_AT91SAM9
658	tristate "AT91SAM9x/AT91CAP9"
659	depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
660	help
661	  RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
662	  (Real Time Timer). These timers are powered by the backup power
663	  supply (such as a small coin cell battery), but do not need to
664	  be used as RTCs.
665
666	  (On AT91SAM9rl chips you probably want to use the dedicated RTC
667	  module and leave the RTT available for other uses.)
668
669config RTC_DRV_AT91SAM9_RTT
670	int
671	range 0 1
672	default 0
673	prompt "RTT module Number" if ARCH_AT91SAM9263
674	depends on RTC_DRV_AT91SAM9
675	help
676	  More than one RTT module is available. You can choose which
677	  one will be used as an RTC. The default of zero is normally
678	  OK to use, though some systems use that for non-RTC purposes.
679
680config RTC_DRV_AT91SAM9_GPBR
681	int
682	range 0 3 if !ARCH_AT91SAM9263
683	range 0 15 if ARCH_AT91SAM9263
684	default 0
685	prompt "Backup Register Number"
686	depends on RTC_DRV_AT91SAM9
687	help
688	  The RTC driver needs to use one of the General Purpose Backup
689	  Registers (GPBRs) as well as the RTT. You can choose which one
690	  will be used. The default of zero is normally OK to use, but
691	  on some systems other software needs to use that register.
692
693config RTC_DRV_AU1XXX
694	tristate "Au1xxx Counter0 RTC support"
695	depends on SOC_AU1X00
696	help
697	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
698	  counter) to be used as a RTC.
699
700	  This driver can also be built as a module. If so, the module
701	  will be called rtc-au1xxx.
702
703config RTC_DRV_BFIN
704	tristate "Blackfin On-Chip RTC"
705	depends on BLACKFIN && !BF561
706	help
707	  If you say yes here you will get support for the
708	  Blackfin On-Chip Real Time Clock.
709
710	  This driver can also be built as a module. If so, the module
711	  will be called rtc-bfin.
712
713config RTC_DRV_RS5C313
714	tristate "Ricoh RS5C313"
715	depends on SH_LANDISK
716	help
717	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
718
719config RTC_DRV_GENERIC
720	tristate "Generic RTC support"
721	# Please consider writing a new RTC driver instead of using the generic
722	# RTC abstraction
723	depends on PARISC || M68K || PPC || SUPERH32
724	help
725	  Say Y or M here to enable RTC support on systems using the generic
726	  RTC abstraction. If you do not know what you are doing, you should
727	  just say Y.
728
729config RTC_DRV_PXA
730       tristate "PXA27x/PXA3xx"
731       depends on ARCH_PXA
732       help
733         If you say Y here you will get access to the real time clock
734         built into your PXA27x or PXA3xx CPU.
735
736         This RTC driver uses PXA RTC registers available since pxa27x
737         series (RDxR, RYxR) instead of legacy RCNR, RTAR.
738
739
740config RTC_DRV_SUN4V
741	bool "SUN4V Hypervisor RTC"
742	depends on SPARC64
743	help
744	  If you say Y here you will get support for the Hypervisor
745	  based RTC on SUN4V systems.
746
747config RTC_DRV_STARFIRE
748	bool "Starfire RTC"
749	depends on SPARC64
750	help
751	  If you say Y here you will get support for the RTC found on
752	  Starfire systems.
753
754config RTC_DRV_TX4939
755	tristate "TX4939 SoC"
756	depends on SOC_TX4939
757	help
758	  Driver for the internal RTC (Realtime Clock) module found on
759	  Toshiba TX4939 SoC.
760
761config RTC_DRV_MV
762	tristate "Marvell SoC RTC"
763	depends on ARCH_KIRKWOOD
764	help
765	  If you say yes here you will get support for the in-chip RTC
766	  that can be found in some of Marvell's SoC devices, such as
767	  the Kirkwood 88F6281 and 88F6192.
768
769	  This driver can also be built as a module. If so, the module
770	  will be called rtc-mv.
771
772config RTC_DRV_PS3
773	tristate "PS3 RTC"
774	depends on PPC_PS3
775	help
776	  If you say yes here you will get support for the RTC on PS3.
777
778	  This driver can also be built as a module. If so, the module
779	  will be called rtc-ps3.
780
781endif # RTC_CLASS
782