summaryrefslogtreecommitdiffstats
path: root/drivers/rtc/Kconfig
blob: c43732ff1800fee154fafe9ab3cc550df25626af (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
#
# RTC class/drivers configuration
#

config RTC_LIB
	tristate

menuconfig RTC_CLASS
	tristate "Real Time Clock"
	default n
	depends on !S390
	select RTC_LIB
	help
	  Generic RTC class support. If you say yes here, you will
 	  be allowed to plug one or more RTCs to your system. You will
	  probably want to enable one or more of the interfaces below.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-core.

if RTC_CLASS

config RTC_HCTOSYS
	bool "Set system time from RTC on startup and resume"
	depends on RTC_CLASS = y
	default y
	help
	  If you say yes here, the system time (wall clock) will be set using
	  the value read from a specified RTC device. This is useful to avoid
	  unnecessary fsck runs at boot time, and to network better.

config RTC_HCTOSYS_DEVICE
	string "RTC used to set the system time"
	depends on RTC_HCTOSYS = y
	default "rtc0"
	help
	  The RTC device that will be used to (re)initialize the system
	  clock, usually rtc0. Initialization is done when the system
	  starts up, and when it resumes from a low power state. This
	  device should record time in UTC, since the kernel won't do
	  timezone correction.

	  The driver for this RTC device must be loaded before late_initcall
	  functions run, so it must usually be statically linked.

	  This clock should be battery-backed, so that it reads the correct
	  time when the system boots from a power-off state. Otherwise, your
	  system will need an external clock source (like an NTP server).

	  If the clock you specify here is not battery backed, it may still
	  be useful to reinitialize system time when resuming from system
	  sleep states. Do not specify an RTC here unless it stays powered
	  during all this system's supported sleep states.

config RTC_DEBUG
	bool "RTC debug support"
	depends on RTC_CLASS = y
	help
	  Say yes here to enable debugging support in the RTC framework
	  and individual RTC drivers.

comment "RTC interfaces"

config RTC_INTF_SYSFS
	boolean "/sys/class/rtc/rtcN (sysfs)"
	depends on SYSFS
	default RTC_CLASS
	help
	  Say yes here if you want to use your RTCs using sysfs interfaces,
	  /sys/class/rtc/rtc0 through /sys/.../rtcN.

	  If unsure, say Y.

config RTC_INTF_PROC
	boolean "/proc/driver/rtc (procfs for rtc0)"
	depends on PROC_FS
	default RTC_CLASS
	help
	  Say yes here if you want to use your first RTC through the proc
	  interface, /proc/driver/rtc. Other RTCs will not be available
	  through that API.

	  If unsure, say Y.

config RTC_INTF_DEV
	boolean "/dev/rtcN (character devices)"
	default RTC_CLASS
	help
	  Say yes here if you want to use your RTCs using the /dev
	  interfaces, which "udev" sets up as /dev/rtc0 through
	  /dev/rtcN.

	  You may want to set up a symbolic link so one of these
	  can be accessed as /dev/rtc, which is a name
	  expected by "hwclock" and some other programs. Recent
	  versions of "udev" are known to set up the symlink for you.

	  If unsure, say Y.

config RTC_INTF_DEV_UIE_EMUL
	bool "RTC UIE emulation on dev interface"
	depends on RTC_INTF_DEV
	help
	  Provides an emulation for RTC_UIE if the underlying rtc chip
	  driver does not expose RTC_UIE ioctls. Those requests generate
	  once-per-second update interrupts, used for synchronization.

	  The emulation code will read the time from the hardware
	  clock several times per second, please enable this option
	  only if you know that you really need it.

config RTC_DRV_TEST
	tristate "Test driver/device"
	help
	  If you say yes here you get support for the
	  RTC test driver. It's a software RTC which can be
	  used to test the RTC subsystem APIs. It gets
	  the time from the system clock.
	  You want this driver only if you are doing development
	  on the RTC subsystem. Please read the source code
	  for further details.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-test.

comment "I2C RTC drivers"
	depends on I2C

if I2C

config RTC_DRV_DS1307
	tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
	help
	  If you say yes here you get support for various compatible RTC
	  chips (often with battery backup) connected with I2C. This driver
	  should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
	  EPSON RX-8025 and probably other chips. In some cases the RTC
	  must already have been initialized (by manufacturing or a
	  bootloader).

	  The first seven registers on these chips hold an RTC, and other
	  registers may add features such as NVRAM, a trickle charger for
	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
	  sysfs, but other chip features may not be available.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1307.

config RTC_DRV_DS1374
	tristate "Dallas/Maxim DS1374"
	depends on RTC_CLASS && I2C
	help
	  If you say yes here you get support for Dallas Semiconductor
	  DS1374 real-time clock chips. If an interrupt is associated
	  with the device, the alarm functionality is supported.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1374.

config RTC_DRV_DS1672
	tristate "Dallas/Maxim DS1672"
	help
	  If you say yes here you get support for the
	  Dallas/Maxim DS1672 timekeeping chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1672.

config RTC_DRV_MAX6900
	tristate "Maxim MAX6900"
	help
	  If you say yes here you will get support for the
	  Maxim MAX6900 I2C RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-max6900.

config RTC_DRV_MAX8925
	tristate "Maxim MAX8925"
	depends on MFD_MAX8925
	help
	  If you say yes here you will get support for the
	  RTC of Maxim MAX8925 PMIC.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-max8925.

config RTC_DRV_RS5C372
	tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
	help
	  If you say yes here you get support for the
	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-rs5c372.

config RTC_DRV_ISL1208
	tristate "Intersil ISL1208"
	help
	  If you say yes here you get support for the
	  Intersil ISL1208 RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-isl1208.

config RTC_DRV_X1205
	tristate "Xicor/Intersil X1205"
	help
	  If you say yes here you get support for the
	  Xicor/Intersil X1205 RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-x1205.

config RTC_DRV_PCF8563
	tristate "Philips PCF8563/Epson RTC8564"
	help
	  If you say yes here you get support for the
	  Philips PCF8563 RTC chip. The Epson RTC8564
	  should work as well.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-pcf8563.

config RTC_DRV_PCF8583
	tristate "Philips PCF8583"
	help
	  If you say yes here you get support for the Philips PCF8583
	  RTC chip found on Acorn RiscPCs. This driver supports the
	  platform specific method of retrieving the current year from
	  the RTC's SRAM. It will work on other platforms with the same
	  chip, but the year will probably have to be tweaked.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-pcf8583.

config RTC_DRV_M41T80
	tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
	help
	  If you say Y here you will get support for the ST M41T60
	  and M41T80 RTC chips series. Currently, the following chips are
	  supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
	  M41ST85, and M41ST87.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-m41t80.

config RTC_DRV_M41T80_WDT
	bool "ST M41T65/M41T80 series RTC watchdog timer"
	depends on RTC_DRV_M41T80
	help
	  If you say Y here you will get support for the
	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.

config RTC_DRV_BQ32K
	tristate "TI BQ32000"
	help
	  If you say Y here you will get support for the TI
	  BQ32000 I2C RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-bq32k.

config RTC_DRV_DM355EVM
	tristate "TI DaVinci DM355 EVM RTC"
	depends on MFD_DM355EVM_MSP
	help
	  Supports the RTC firmware in the MSP430 on the DM355 EVM.

config RTC_DRV_TWL92330
	boolean "TI TWL92330/Menelaus"
	depends on MENELAUS
	help
	  If you say yes here you get support for the RTC on the
	  TWL92330 "Menelaus" power management chip, used with OMAP2
	  platforms. The support is integrated with the rest of
	  the Menelaus driver; it's not separate module.

config RTC_DRV_TWL4030
	tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
	depends on RTC_CLASS && TWL4030_CORE
	help
	  If you say yes here you get support for the RTC on the
	  TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-twl.

config RTC_DRV_S35390A
	tristate "Seiko Instruments S-35390A"
	select BITREVERSE
	help
	  If you say yes here you will get support for the Seiko
	  Instruments S-35390A.

	  This driver can also be built as a module. If so the module
	  will be called rtc-s35390a.

config RTC_DRV_FM3130
	tristate "Ramtron FM3130"
	help
	  If you say Y here you will get support for the
	  Ramtron FM3130 RTC chips.
	  Ramtron FM3130 is a chip with two separate devices inside,
	  RTC clock and FRAM. This driver provides only RTC functionality.

	  This driver can also be built as a module. If so the module
	  will be called rtc-fm3130.

config RTC_DRV_RX8581
	tristate "Epson RX-8581"
	help
	  If you say yes here you will get support for the Epson RX-8581.

	  This driver can also be built as a module. If so the module
	  will be called rtc-rx8581.

config RTC_DRV_RX8025
	tristate "Epson RX-8025SA/NB"
	help
	  If you say yes here you get support for the Epson
	  RX-8025SA/NB RTC chips.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-rx8025.

endif # I2C

comment "SPI RTC drivers"

if SPI_MASTER

config RTC_DRV_M41T94
	tristate "ST M41T94"
	help
	  If you say yes here you will get support for the
	  ST M41T94 SPI RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-m41t94.

config RTC_DRV_DS1305
	tristate "Dallas/Maxim DS1305/DS1306"
	help
	  Select this driver to get support for the Dallas/Maxim DS1305
	  and DS1306 real time clock chips. These support a trickle
	  charger, alarms, and NVRAM in addition to the clock.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1305.

config RTC_DRV_DS1390
	tristate "Dallas/Maxim DS1390/93/94"
	help
	  If you say yes here you get support for the
	  Dallas/Maxim DS1390/93/94 chips.

	  This driver only supports the RTC feature, and not other chip
	  features such as alarms and trickle charging.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1390.

config RTC_DRV_MAX6902
	tristate "Maxim MAX6902"
	help
	  If you say yes here you will get support for the
	  Maxim MAX6902 SPI RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-max6902.

config RTC_DRV_R9701
	tristate "Epson RTC-9701JE"
	help
	  If you say yes here you will get support for the
	  Epson RTC-9701JE SPI RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-r9701.

config RTC_DRV_RS5C348
	tristate "Ricoh RS5C348A/B"
	help
	  If you say yes here you get support for the
	  Ricoh RS5C348A and RS5C348B RTC chips.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-rs5c348.

config RTC_DRV_DS3234
	tristate "Maxim/Dallas DS3234"
	help
	  If you say yes here you get support for the
	  Maxim/Dallas DS3234 SPI RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds3234.

config RTC_DRV_PCF2123
	tristate "NXP PCF2123"
	help
	  If you say yes here you get support for the NXP PCF2123
	  RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-pcf2123.

endif # SPI_MASTER

comment "Platform RTC drivers"

# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
# global rtc_lock ... it's not yet just another platform_device.

config RTC_DRV_CMOS
	tristate "PC-style 'CMOS'"
	depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
	default y if X86
	help
	  Say "yes" here to get direct support for the real time clock
	  found in every PC or ACPI-based system, and some other boards.
	  Specifically the original MC146818, compatibles like those in
	  PC south bridges, the DS12887 or M48T86, some multifunction
	  or LPC bus chips, and so on.

	  Your system will need to define the platform device used by
	  this driver, otherwise it won't be accessible. This means
	  you can safely enable this driver if you don't know whether
	  or not your board has this kind of hardware.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-cmos.

config RTC_DRV_DS1216
	tristate "Dallas DS1216"
	depends on SNI_RM
	help
	  If you say yes here you get support for the Dallas DS1216 RTC chips.

config RTC_DRV_DS1286
	tristate "Dallas DS1286"
	help
	  If you say yes here you get support for the Dallas DS1286 RTC chips.

config RTC_DRV_DS1302
	tristate "Dallas DS1302"
	depends on SH_SECUREEDGE5410
	help
	  If you say yes here you get support for the Dallas DS1302 RTC chips.

config RTC_DRV_DS1511
	tristate "Dallas DS1511"
	depends on RTC_CLASS
	help
	  If you say yes here you get support for the
	  Dallas DS1511 timekeeping/watchdog chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1511.

config RTC_DRV_DS1553
	tristate "Maxim/Dallas DS1553"
	help
	  If you say yes here you get support for the
	  Maxim/Dallas DS1553 timekeeping chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1553.

config RTC_DRV_DS1742
	tristate "Maxim/Dallas DS1742/1743"
	help
	  If you say yes here you get support for the
	  Maxim/Dallas DS1742/1743 timekeeping chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ds1742.

config RTC_DRV_EFI
	tristate "EFI RTC"
	depends on IA64
	help
	  If you say yes here you will get support for the EFI
	  Real Time Clock.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-efi.

config RTC_DRV_STK17TA8
	tristate "Simtek STK17TA8"
	depends on RTC_CLASS
	help
	  If you say yes here you get support for the
	  Simtek STK17TA8 timekeeping chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-stk17ta8.

config RTC_DRV_M48T86
	tristate "ST M48T86/Dallas DS12887"
	help
	  If you say Y here you will get support for the
	  ST M48T86 and Dallas DS12887 RTC chips.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-m48t86.

config RTC_DRV_M48T35
	tristate "ST M48T35"
	help
	  If you say Y here you will get support for the
	  ST M48T35 RTC chip.

	  This driver can also be built as a module, if so, the module
	  will be called "rtc-m48t35".

config RTC_DRV_M48T59
	tristate "ST M48T59/M48T08/M48T02"
	help
	  If you say Y here you will get support for the
	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.

	  These chips are usually found in Sun SPARC and UltraSPARC
	  workstations.

	  This driver can also be built as a module, if so, the module
	  will be called "rtc-m48t59".

config RTC_DRV_MSM6242
	tristate "Oki MSM6242"
	help
	  If you say yes here you get support for the Oki MSM6242
	  timekeeping chip. It is used in some Amiga models (e.g. A2000).

	  This driver can also be built as a module. If so, the module
	  will be called rtc-msm6242.

config RTC_MXC
	tristate "Freescale MXC Real Time Clock"
	depends on ARCH_MXC
	depends on RTC_CLASS
	help
	   If you say yes here you get support for the Freescale MXC
	   RTC module.

	   This driver can also be built as a module, if so, the module
	   will be called "rtc-mxc".

config RTC_DRV_BQ4802
	tristate "TI BQ4802"
	help
	  If you say Y here you will get support for the TI
	  BQ4802 RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-bq4802.

config RTC_DRV_RP5C01
	tristate "Ricoh RP5C01"
	help
	  If you say yes here you get support for the Ricoh RP5C01
	  timekeeping chip. It is used in some Amiga models (e.g. A3000
	  and A4000).

	  This driver can also be built as a module. If so, the module
	  will be called rtc-rp5c01.

config RTC_DRV_V3020
	tristate "EM Microelectronic V3020"
	help
	  If you say yes here you will get support for the
	  EM Microelectronic v3020 RTC chip.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-v3020.

config RTC_DRV_WM831X
	tristate "Wolfson Microelectronics WM831x RTC"
	depends on MFD_WM831X
	help
	  If you say yes here you will get support for the RTC subsystem
	  of the Wolfson Microelectronics WM831X series PMICs.

	  This driver can also be built as a module. If so, the module
	  will be called "rtc-wm831x".

config RTC_DRV_WM8350
	tristate "Wolfson Microelectronics WM8350 RTC"
	depends on MFD_WM8350
	help
	  If you say yes here you will get support for the RTC subsystem
	  of the Wolfson Microelectronics WM8350.

	  This driver can also be built as a module. If so, the module
	  will be called "rtc-wm8350".

config RTC_DRV_PCF50633
	depends on MFD_PCF50633
	tristate "NXP PCF50633 RTC"
	help
	  If you say yes here you get support for the RTC subsystem of the
	  NXP PCF50633 used in embedded systems.

config RTC_DRV_AB3100
	tristate "ST-Ericsson AB3100 RTC"
	depends on AB3100_CORE
	default y if AB3100_CORE
	help
	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
	  support. This chip contains a battery- and capacitor-backed RTC.

config RTC_DRV_AB8500
	tristate "ST-Ericsson AB8500 RTC"
	depends on AB8500_CORE
	help
	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
	  support. This chip contains a battery- and capacitor-backed RTC.

config RTC_DRV_NUC900
	tristate "NUC910/NUC920 RTC driver"
	depends on RTC_CLASS && ARCH_W90X900
	help
	  If you say yes here you get support for the RTC subsystem of the
	  NUC910/NUC920 used in embedded systems.

comment "on-CPU RTC drivers"

config RTC_DRV_DAVINCI
	tristate "TI DaVinci RTC"
	depends on ARCH_DAVINCI_DM365
	help
	  If you say yes here you get support for the RTC on the
	  DaVinci platforms (DM365).

	  This driver can also be built as a module. If so, the module
	  will be called rtc-davinci.

config RTC_DRV_OMAP
	tristate "TI OMAP1"
	depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX
	help
	  Say "yes" here to support the real time clock on TI OMAP1 and
	  DA8xx/OMAP-L13x chips.  This driver can also be built as a
	  module called rtc-omap.

config HAVE_S3C_RTC
	bool
	help
	  This will include RTC support for Samsung SoCs. If
	  you want to include RTC support for any machine, kindly
	  select this in the respective mach-XXXX/Kconfig file.

config RTC_DRV_S3C
	tristate "Samsung S3C series SoC RTC"
	depends on ARCH_S3C2410 || ARCH_S3C64XX || HAVE_S3C_RTC
	help
	  RTC (Realtime Clock) driver for the clock inbuilt into the
	  Samsung S3C24XX series of SoCs. This can provide periodic
	  interrupt rates from 1Hz to 64Hz for user programs, and
	  wakeup from Alarm.

	  The driver currently supports the common features on all the
	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
	  and S3C2442.

	  This driver can also be build as a module. If so, the module
	  will be called rtc-s3c.

config RTC_DRV_EP93XX
	tristate "Cirrus Logic EP93XX"
	depends on ARCH_EP93XX
	help
	  If you say yes here you get support for the
	  RTC embedded in the Cirrus Logic EP93XX processors.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ep93xx.

config RTC_DRV_SA1100
	tristate "SA11x0/PXA2xx"
	depends on ARCH_SA1100 || ARCH_PXA
	help
	  If you say Y here you will get access to the real time clock
	  built into your SA11x0 or PXA2xx CPU.

	  To compile this driver as a module, choose M here: the
	  module will be called rtc-sa1100.

config RTC_DRV_SH
	tristate "SuperH On-Chip RTC"
	depends on RTC_CLASS && SUPERH && HAVE_CLK
	help
	  Say Y here to enable support for the on-chip RTC found in
	  most SuperH processors.

 	  To compile this driver as a module, choose M here: the
	  module will be called rtc-sh.

config RTC_DRV_VR41XX
	tristate "NEC VR41XX"
	depends on CPU_VR41XX
	help
	  If you say Y here you will get access to the real time clock
	  built into your NEC VR41XX CPU.

	  To compile this driver as a module, choose M here: the
	  module will be called rtc-vr41xx.

config RTC_DRV_PL030
	tristate "ARM AMBA PL030 RTC"
	depends on ARM_AMBA
	help
	  If you say Y here you will get access to ARM AMBA
	  PrimeCell PL030 RTC found on certain ARM SOCs.

	  To compile this driver as a module, choose M here: the
	  module will be called rtc-pl030.

config RTC_DRV_PL031
	tristate "ARM AMBA PL031 RTC"
	depends on ARM_AMBA
	help
	  If you say Y here you will get access to ARM AMBA
	  PrimeCell PL031 RTC found on certain ARM SOCs.

	  To compile this driver as a module, choose M here: the
	  module will be called rtc-pl031.

config RTC_DRV_AT32AP700X
	tristate "AT32AP700X series RTC"
	depends on PLATFORM_AT32AP
	help
	  Driver for the internal RTC (Realtime Clock) on Atmel AVR32
	  AT32AP700x family processors.

config RTC_DRV_AT91RM9200
	tristate "AT91RM9200 or AT91SAM9RL"
	depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL
	help
	  Driver for the internal RTC (Realtime Clock) module found on
	  Atmel AT91RM9200's and AT91SAM9RL chips. On SAM9RL chips
	  this is powered by the backup power supply.

config RTC_DRV_AT91SAM9
	tristate "AT91SAM9x/AT91CAP9"
	depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
	help
	  RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
	  (Real Time Timer). These timers are powered by the backup power
	  supply (such as a small coin cell battery), but do not need to
	  be used as RTCs.

	  (On AT91SAM9rl chips you probably want to use the dedicated RTC
	  module and leave the RTT available for other uses.)

config RTC_DRV_AT91SAM9_RTT
	int
	range 0 1
	default 0
	prompt "RTT module Number" if ARCH_AT91SAM9263
	depends on RTC_DRV_AT91SAM9
	help
	  More than one RTT module is available. You can choose which
	  one will be used as an RTC. The default of zero is normally
	  OK to use, though some systems use that for non-RTC purposes.

config RTC_DRV_AT91SAM9_GPBR
	int
	range 0 3 if !ARCH_AT91SAM9263
	range 0 15 if ARCH_AT91SAM9263
	default 0
	prompt "Backup Register Number"
	depends on RTC_DRV_AT91SAM9
	help
	  The RTC driver needs to use one of the General Purpose Backup
	  Registers (GPBRs) as well as the RTT. You can choose which one
	  will be used. The default of zero is normally OK to use, but
	  on some systems other software needs to use that register.

config RTC_DRV_AU1XXX
	tristate "Au1xxx Counter0 RTC support"
	depends on SOC_AU1X00
	help
	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
	  counter) to be used as a RTC.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-au1xxx.

config RTC_DRV_BFIN
	tristate "Blackfin On-Chip RTC"
	depends on BLACKFIN && !BF561
	help
	  If you say yes here you will get support for the
	  Blackfin On-Chip Real Time Clock.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-bfin.

config RTC_DRV_RS5C313
	tristate "Ricoh RS5C313"
	depends on SH_LANDISK
	help
	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.

config RTC_DRV_GENERIC
	tristate "Generic RTC support"
	# Please consider writing a new RTC driver instead of using the generic
	# RTC abstraction
	depends on PARISC || M68K || PPC || SUPERH32
	help
	  Say Y or M here to enable RTC support on systems using the generic
	  RTC abstraction. If you do not know what you are doing, you should
	  just say Y.

config RTC_DRV_PXA
       tristate "PXA27x/PXA3xx"
       depends on ARCH_PXA
       help
         If you say Y here you will get access to the real time clock
         built into your PXA27x or PXA3xx CPU.

         This RTC driver uses PXA RTC registers available since pxa27x
         series (RDxR, RYxR) instead of legacy RCNR, RTAR.


config RTC_DRV_SUN4V
	bool "SUN4V Hypervisor RTC"
	depends on SPARC64
	help
	  If you say Y here you will get support for the Hypervisor
	  based RTC on SUN4V systems.

config RTC_DRV_STARFIRE
	bool "Starfire RTC"
	depends on SPARC64
	help
	  If you say Y here you will get support for the RTC found on
	  Starfire systems.

config RTC_DRV_TX4939
	tristate "TX4939 SoC"
	depends on SOC_TX4939
	help
	  Driver for the internal RTC (Realtime Clock) module found on
	  Toshiba TX4939 SoC.

config RTC_DRV_MV
	tristate "Marvell SoC RTC"
	depends on ARCH_KIRKWOOD || ARCH_DOVE
	help
	  If you say yes here you will get support for the in-chip RTC
	  that can be found in some of Marvell's SoC devices, such as
	  the Kirkwood 88F6281 and 88F6192.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-mv.

config RTC_DRV_PS3
	tristate "PS3 RTC"
	depends on PPC_PS3
	help
	  If you say yes here you will get support for the RTC on PS3.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-ps3.

config RTC_DRV_COH901331
	tristate "ST-Ericsson COH 901 331 RTC"
	depends on ARCH_U300
	help
	  If you say Y here you will get access to ST-Ericsson
	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
	  Platforms.

	  This driver can also be built as a module. If so, the module
	  will be called "rtc-coh901331".


config RTC_DRV_STMP
	tristate "Freescale STMP3xxx RTC"
	depends on ARCH_STMP3XXX
	help
	  If you say yes here you will get support for the onboard
	  STMP3xxx RTC.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-stmp3xxx.

config RTC_DRV_PCAP
	tristate "PCAP RTC"
	depends on EZX_PCAP
	help
	  If you say Y here you will get support for the RTC found on
	  the PCAP2 ASIC used on some Motorola phones.

config RTC_DRV_MC13783
	depends on MFD_MC13783
	tristate "Freescale MC13783 RTC"
	help
	  This enables support for the Freescale MC13783 PMIC RTC

config RTC_DRV_MPC5121
	tristate "Freescale MPC5121 built-in RTC"
	depends on PPC_MPC512x && RTC_CLASS
	help
	  If you say yes here you will get support for the
	  built-in RTC MPC5121.

	  This driver can also be built as a module. If so, the module
	  will be called rtc-mpc5121.

endif # RTC_CLASS
OpenPOWER on IntegriCloud