rtc: NTP: Add CONFIG_RTC_SYSTOHC_DEVICE for NTP synchronization
[deliverable/linux.git] / drivers / rtc / Kconfig
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7be2c7c9 1#
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2# RTC class/drivers configuration
3#
4
5config RTC_LIB
b4d246b1 6 bool
0c86edc0 7
bb35fb20 8menuconfig RTC_CLASS
b4d246b1 9 bool "Real Time Clock"
0c86edc0 10 default n
3369465e 11 depends on !S390 && !UML
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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
27ae4104 16 probably want to enable one or more of the interfaces below.
0c86edc0 17
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18if RTC_CLASS
19
0c86edc0 20config RTC_HCTOSYS
7ca1d488 21 bool "Set system time from RTC on startup and resume"
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22 default y
23 help
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24 If you say yes here, the system time (wall clock) will be set using
25 the value read from a specified RTC device. This is useful to avoid
26 unnecessary fsck runs at boot time, and to network better.
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27
28config RTC_HCTOSYS_DEVICE
7ca1d488 29 string "RTC used to set the system time"
9c5150b3 30 depends on RTC_HCTOSYS
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31 default "rtc0"
32 help
7ca1d488 33 The RTC device that will be used to (re)initialize the system
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34 clock, usually rtc0. Initialization is done when the system
35 starts up, and when it resumes from a low power state. This
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36 device should record time in UTC, since the kernel won't do
37 timezone correction.
7ca1d488 38
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39 The driver for this RTC device must be loaded before late_initcall
40 functions run, so it must usually be statically linked.
41
7ca1d488 42 This clock should be battery-backed, so that it reads the correct
ae64d169 43 time when the system boots from a power-off state. Otherwise, your
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44 system will need an external clock source (like an NTP server).
45
46 If the clock you specify here is not battery backed, it may still
47 be useful to reinitialize system time when resuming from system
09b6bdb3 48 sleep states. Do not specify an RTC here unless it stays powered
7ca1d488 49 during all this system's supported sleep states.
0c86edc0 50
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51config RTC_SYSTOHC
52 bool "Set the RTC time based on NTP synchronization"
53 default y
54 help
55 If you say yes here, the system time (wall clock) will be stored
56 in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
57 minutes if userspace reports synchronized NTP status.
58
59config RTC_SYSTOHC_DEVICE
60 string "RTC used to synchronize NTP adjustment"
61 depends on RTC_SYSTOHC
62 default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
63 default "rtc0"
64 help
65 The RTC device used for NTP synchronization. The main difference
66 between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this
67 one can sleep when setting time, because it runs in the workqueue
68 context.
69
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70config RTC_DEBUG
71 bool "RTC debug support"
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72 help
73 Say yes here to enable debugging support in the RTC framework
74 and individual RTC drivers.
75
0c86edc0 76comment "RTC interfaces"
0c86edc0 77
c5c3e192 78config RTC_INTF_SYSFS
6341e62b 79 bool "/sys/class/rtc/rtcN (sysfs)"
bb35fb20 80 depends on SYSFS
8dc08395 81 default RTC_CLASS
c5c3e192 82 help
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83 Say yes here if you want to use your RTCs using sysfs interfaces,
84 /sys/class/rtc/rtc0 through /sys/.../rtcN.
c5c3e192 85
ae64d169 86 If unsure, say Y.
c5c3e192 87
728a2947 88config RTC_INTF_PROC
6341e62b 89 bool "/proc/driver/rtc (procfs for rtcN)"
bb35fb20 90 depends on PROC_FS
8dc08395 91 default RTC_CLASS
728a2947 92 help
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93 Say yes here if you want to use your system clock RTC through
94 the proc interface, /proc/driver/rtc.
95 Other RTCs will not be available through that API.
96 If there is no RTC for the system clock, then the first RTC(rtc0)
97 is used by default.
728a2947 98
ae64d169 99 If unsure, say Y.
728a2947 100
e824290e 101config RTC_INTF_DEV
6341e62b 102 bool "/dev/rtcN (character devices)"
8dc08395 103 default RTC_CLASS
e824290e 104 help
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105 Say yes here if you want to use your RTCs using the /dev
106 interfaces, which "udev" sets up as /dev/rtc0 through
ae64d169 107 /dev/rtcN.
e824290e 108
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109 You may want to set up a symbolic link so one of these
110 can be accessed as /dev/rtc, which is a name
111 expected by "hwclock" and some other programs. Recent
112 versions of "udev" are known to set up the symlink for you.
113
114 If unsure, say Y.
e824290e 115
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116config RTC_INTF_DEV_UIE_EMUL
117 bool "RTC UIE emulation on dev interface"
118 depends on RTC_INTF_DEV
119 help
120 Provides an emulation for RTC_UIE if the underlying rtc chip
121 driver does not expose RTC_UIE ioctls. Those requests generate
122 once-per-second update interrupts, used for synchronization.
123
124 The emulation code will read the time from the hardware
125 clock several times per second, please enable this option
126 only if you know that you really need it.
127
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128config RTC_DRV_TEST
129 tristate "Test driver/device"
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130 help
131 If you say yes here you get support for the
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132 RTC test driver. It's a software RTC which can be
133 used to test the RTC subsystem APIs. It gets
134 the time from the system clock.
135 You want this driver only if you are doing development
136 on the RTC subsystem. Please read the source code
137 for further details.
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138
139 This driver can also be built as a module. If so, the module
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140 will be called rtc-test.
141
142comment "I2C RTC drivers"
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143 depends on I2C
144
145if I2C
1fec7c66 146
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147config RTC_DRV_88PM860X
148 tristate "Marvell 88PM860x"
6b8029fa 149 depends on I2C && MFD_88PM860X
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150 help
151 If you say yes here you get support for RTC function in Marvell
152 88PM860x chips.
153
154 This driver can also be built as a module. If so, the module
155 will be called rtc-88pm860x.
156
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157config RTC_DRV_88PM80X
158 tristate "Marvell 88PM80x"
6b8029fa 159 depends on I2C && MFD_88PM800
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160 help
161 If you say yes here you get support for RTC function in Marvell
162 88PM80x chips.
163
164 This driver can also be built as a module. If so, the module
165 will be called rtc-88pm80x.
166
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167config RTC_DRV_ABB5ZES3
168 depends on I2C
169 select REGMAP_I2C
170 tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
171 help
172 If you say yes here you get support for the Abracon
173 AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
174
175 This driver can also be built as a module. If so, the module
176 will be called rtc-ab-b5ze-s3.
177
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178config RTC_DRV_ABX80X
179 tristate "Abracon ABx80x"
180 help
181 If you say yes here you get support for Abracon AB080X and AB180X
182 families of ultra-low-power battery- and capacitor-backed real-time
183 clock chips.
184
185 This driver can also be built as a module. If so, the module
186 will be called rtc-abx80x.
187
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188config RTC_DRV_AS3722
189 tristate "ams AS3722 RTC driver"
190 depends on MFD_AS3722
191 help
192 If you say yes here you get support for the RTC of ams AS3722 PMIC
193 chips.
194
195 This driver can also be built as a module. If so, the module
196 will be called rtc-as3722.
197
1abb0dc9 198config RTC_DRV_DS1307
a2166858 199 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
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200 help
201 If you say yes here you get support for various compatible RTC
ae64d169 202 chips (often with battery backup) connected with I2C. This driver
1abb0dc9 203 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
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204 EPSON RX-8025 and probably other chips. In some cases the RTC
205 must already have been initialized (by manufacturing or a
206 bootloader).
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207
208 The first seven registers on these chips hold an RTC, and other
209 registers may add features such as NVRAM, a trickle charger for
ae64d169 210 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
682d73f6 211 sysfs, but other chip features may not be available.
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212
213 This driver can also be built as a module. If so, the module
214 will be called rtc-ds1307.
215
bf4994d7 216config RTC_DRV_DS1374
09b6bdb3 217 tristate "Dallas/Maxim DS1374"
6b8029fa 218 depends on I2C
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219 help
220 If you say yes here you get support for Dallas Semiconductor
ae64d169 221 DS1374 real-time clock chips. If an interrupt is associated
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222 with the device, the alarm functionality is supported.
223
ae64d169 224 This driver can also be built as a module. If so, the module
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225 will be called rtc-ds1374.
226
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227config RTC_DRV_DS1374_WDT
228 bool "Dallas/Maxim DS1374 watchdog timer"
229 depends on RTC_DRV_DS1374
230 help
231 If you say Y here you will get support for the
232 watchdog timer in the Dallas Semiconductor DS1374
233 real-time clock chips.
234
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235config RTC_DRV_DS1672
236 tristate "Dallas/Maxim DS1672"
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237 help
238 If you say yes here you get support for the
09a21e56 239 Dallas/Maxim DS1672 timekeeping chip.
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240
241 This driver can also be built as a module. If so, the module
09a21e56 242 will be called rtc-ds1672.
9bf5b4f5 243
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244config RTC_DRV_DS3232
245 tristate "Dallas/Maxim DS3232"
6b8029fa 246 depends on I2C
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247 help
248 If you say yes here you get support for Dallas Semiconductor
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249 DS3232 real-time clock chips. If an interrupt is associated
250 with the device, the alarm functionality is supported.
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251
252 This driver can also be built as a module. If so, the module
253 will be called rtc-ds3232.
254
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255config RTC_DRV_HYM8563
256 tristate "Haoyu Microelectronics HYM8563"
257 depends on I2C && OF
258 help
259 Say Y to enable support for the HYM8563 I2C RTC chip. Apart
260 from the usual rtc functions it provides a clock output of
261 up to 32kHz.
262
263 This driver can also be built as a module. If so, the module
264 will be called rtc-hym8563.
265
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266config RTC_DRV_LP8788
267 tristate "TI LP8788 RTC driver"
268 depends on MFD_LP8788
269 help
270 Say Y to enable support for the LP8788 RTC/ALARM driver.
271
09a21e56 272config RTC_DRV_MAX6900
09b6bdb3 273 tristate "Maxim MAX6900"
7e56a7dc 274 help
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275 If you say yes here you will get support for the
276 Maxim MAX6900 I2C RTC chip.
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277
278 This driver can also be built as a module. If so, the module
09a21e56 279 will be called rtc-max6900.
7e56a7dc 280
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281config RTC_DRV_MAX8907
282 tristate "Maxim MAX8907"
283 depends on MFD_MAX8907
284 help
285 If you say yes here you will get support for the
286 RTC of Maxim MAX8907 PMIC.
287
288 This driver can also be built as a module. If so, the module
289 will be called rtc-max8907.
290
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291config RTC_DRV_MAX8925
292 tristate "Maxim MAX8925"
293 depends on MFD_MAX8925
294 help
295 If you say yes here you will get support for the
296 RTC of Maxim MAX8925 PMIC.
297
298 This driver can also be built as a module. If so, the module
299 will be called rtc-max8925.
300
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301config RTC_DRV_MAX8998
302 tristate "Maxim MAX8998"
303 depends on MFD_MAX8998
304 help
305 If you say yes here you will get support for the
306 RTC of Maxim MAX8998 PMIC.
307
308 This driver can also be built as a module. If so, the module
309 will be called rtc-max8998.
310
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311config RTC_DRV_MAX8997
312 tristate "Maxim MAX8997"
313 depends on MFD_MAX8997
314 help
315 If you say yes here you will get support for the
316 RTC of Maxim MAX8997 PMIC.
317
318 This driver can also be built as a module. If so, the module
319 will be called rtc-max8997.
320
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321config RTC_DRV_MAX77686
322 tristate "Maxim MAX77686"
323 depends on MFD_MAX77686
324 help
325 If you say yes here you will get support for the
326 RTC of Maxim MAX77686 PMIC.
327
328 This driver can also be built as a module. If so, the module
329 will be called rtc-max77686.
330
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331config RTC_DRV_RK808
332 tristate "Rockchip RK808 RTC"
333 depends on MFD_RK808
334 help
335 If you say yes here you will get support for the
336 RTC of RK808 PMIC.
337
338 This driver can also be built as a module. If so, the module
339 will be called rk808-rtc.
340
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341config RTC_DRV_MAX77802
342 tristate "Maxim 77802 RTC"
343 depends on MFD_MAX77686
344 help
345 If you say yes here you will get support for the
346 RTC of Maxim MAX77802 PMIC.
347
348 This driver can also be built as a module. If so, the module
349 will be called rtc-max77802.
350
09a21e56 351config RTC_DRV_RS5C372
5d4529be 352 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
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353 help
354 If you say yes here you get support for the
5d4529be 355 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
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356
357 This driver can also be built as a module. If so, the module
09a21e56 358 will be called rtc-rs5c372.
edf1aaa3 359
09a21e56 360config RTC_DRV_ISL1208
09b6bdb3 361 tristate "Intersil ISL1208"
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362 help
363 If you say yes here you get support for the
09b6bdb3 364 Intersil ISL1208 RTC chip.
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365
366 This driver can also be built as a module. If so, the module
09a21e56 367 will be called rtc-isl1208.
5ec3e4b7 368
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369config RTC_DRV_ISL12022
370 tristate "Intersil ISL12022"
371 help
372 If you say yes here you get support for the
373 Intersil ISL12022 RTC chip.
374
375 This driver can also be built as a module. If so, the module
376 will be called rtc-isl12022.
377
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378config RTC_DRV_ISL12057
379 depends on I2C
380 select REGMAP_I2C
381 tristate "Intersil ISL12057"
382 help
383 If you say yes here you get support for the Intersil ISL12057
384 I2C RTC chip.
385
386 This driver can also be built as a module. If so, the module
387 will be called rtc-isl12057.
388
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389config RTC_DRV_X1205
390 tristate "Xicor/Intersil X1205"
db68b189 391 help
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392 If you say yes here you get support for the
393 Xicor/Intersil X1205 RTC chip.
394
395 This driver can also be built as a module. If so, the module
396 will be called rtc-x1205.
db68b189 397
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398config RTC_DRV_PALMAS
399 tristate "TI Palmas RTC driver"
400 depends on MFD_PALMAS
401 help
402 If you say yes here you get support for the RTC of TI PALMA series PMIC
403 chips.
404
405 This driver can also be built as a module. If so, the module
406 will be called rtc-palma.
407
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408config RTC_DRV_PCF2127
409 tristate "NXP PCF2127"
410 help
411 If you say yes here you get support for the NXP PCF2127/29 RTC
412 chips.
413
414 This driver can also be built as a module. If so, the module
415 will be called rtc-pcf2127.
416
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417config RTC_DRV_PCF8523
418 tristate "NXP PCF8523"
419 help
420 If you say yes here you get support for the NXP PCF8523 RTC
421 chips.
422
423 This driver can also be built as a module. If so, the module
424 will be called rtc-pcf8523.
425
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426config RTC_DRV_PCF8563
427 tristate "Philips PCF8563/Epson RTC8564"
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428 help
429 If you say yes here you get support for the
430 Philips PCF8563 RTC chip. The Epson RTC8564
431 should work as well.
432
433 This driver can also be built as a module. If so, the module
434 will be called rtc-pcf8563.
435
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436config RTC_DRV_PCF85063
437 tristate "nxp PCF85063"
438 help
439 If you say yes here you get support for the PCF85063 RTC chip
440
441 This driver can also be built as a module. If so, the module
442 will be called rtc-pcf85063.
443
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444config RTC_DRV_PCF8583
445 tristate "Philips PCF8583"
9c0c5705 446 help
bb71f99f 447 If you say yes here you get support for the Philips PCF8583
09a21e56 448 RTC chip found on Acorn RiscPCs. This driver supports the
bb71f99f 449 platform specific method of retrieving the current year from
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450 the RTC's SRAM. It will work on other platforms with the same
451 chip, but the year will probably have to be tweaked.
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452
453 This driver can also be built as a module. If so, the module
454 will be called rtc-pcf8583.
455
caaff562 456config RTC_DRV_M41T80
6b1a5235 457 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
caaff562 458 help
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459 If you say Y here you will get support for the ST M41T60
460 and M41T80 RTC chips series. Currently, the following chips are
f30281f4 461 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
6b1a5235 462 M41ST85, M41ST87, and MicroCrystal RV4162.
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463
464 This driver can also be built as a module. If so, the module
465 will be called rtc-m41t80.
466
617780d2 467config RTC_DRV_M41T80_WDT
d3a126fc 468 bool "ST M41T65/M41T80 series RTC watchdog timer"
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469 depends on RTC_DRV_M41T80
470 help
471 If you say Y here you will get support for the
d3a126fc 472 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
617780d2 473
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474config RTC_DRV_BQ32K
475 tristate "TI BQ32000"
476 help
477 If you say Y here you will get support for the TI
478 BQ32000 I2C RTC chip.
479
480 This driver can also be built as a module. If so, the module
481 will be called rtc-bq32k.
482
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483config RTC_DRV_DM355EVM
484 tristate "TI DaVinci DM355 EVM RTC"
485 depends on MFD_DM355EVM_MSP
486 help
487 Supports the RTC firmware in the MSP430 on the DM355 EVM.
488
0c4a59fe 489config RTC_DRV_TWL92330
6341e62b 490 bool "TI TWL92330/Menelaus"
bb35fb20 491 depends on MENELAUS
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492 help
493 If you say yes here you get support for the RTC on the
01dd2fbf 494 TWL92330 "Menelaus" power management chip, used with OMAP2
ae64d169 495 platforms. The support is integrated with the rest of
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496 the Menelaus driver; it's not separate module.
497
f96411ab 498config RTC_DRV_TWL4030
a6b49ffd 499 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
6b8029fa 500 depends on TWL4030_CORE
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501 help
502 If you say yes here you get support for the RTC on the
a6b49ffd 503 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
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504
505 This driver can also be built as a module. If so, the module
a6b49ffd 506 will be called rtc-twl.
f96411ab 507
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508config RTC_DRV_TPS6586X
509 tristate "TI TPS6586X RTC driver"
510 depends on MFD_TPS6586X
511 help
a895d57d 512 TI Power Management IC TPS6586X supports RTC functionality
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513 along with alarm. This driver supports the RTC driver for
514 the TPS6586X RTC module.
515
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516config RTC_DRV_TPS65910
517 tristate "TI TPS65910 RTC driver"
518 depends on RTC_CLASS && MFD_TPS65910
519 help
520 If you say yes here you get support for the RTC on the
521 TPS65910 chips.
522
523 This driver can also be built as a module. If so, the module
524 will be called rtc-tps65910.
525
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526config RTC_DRV_TPS80031
527 tristate "TI TPS80031/TPS80032 RTC driver"
528 depends on MFD_TPS80031
529 help
a895d57d 530 TI Power Management IC TPS80031 supports RTC functionality
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531 along with alarm. This driver supports the RTC driver for
532 the TPS80031 RTC module.
533
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534config RTC_DRV_RC5T583
535 tristate "RICOH 5T583 RTC driver"
536 depends on MFD_RC5T583
537 help
538 If you say yes here you get support for the RTC on the
539 RICOH 5T583 chips.
540
541 This driver can also be built as a module. If so, the module
542 will be called rtc-rc5t583.
543
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544config RTC_DRV_S35390A
545 tristate "Seiko Instruments S-35390A"
d479540d 546 select BITREVERSE
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547 help
548 If you say yes here you will get support for the Seiko
549 Instruments S-35390A.
550
551 This driver can also be built as a module. If so the module
552 will be called rtc-s35390a.
553
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554config RTC_DRV_FM3130
555 tristate "Ramtron FM3130"
556 help
557 If you say Y here you will get support for the
558 Ramtron FM3130 RTC chips.
559 Ramtron FM3130 is a chip with two separate devices inside,
560 RTC clock and FRAM. This driver provides only RTC functionality.
561
562 This driver can also be built as a module. If so the module
563 will be called rtc-fm3130.
564
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565config RTC_DRV_RX8581
566 tristate "Epson RX-8581"
567 help
568 If you say yes here you will get support for the Epson RX-8581.
569
570 This driver can also be built as a module. If so the module
571 will be called rtc-rx8581.
572
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573config RTC_DRV_RX8025
574 tristate "Epson RX-8025SA/NB"
575 help
576 If you say yes here you get support for the Epson
577 RX-8025SA/NB RTC chips.
578
579 This driver can also be built as a module. If so, the module
580 will be called rtc-rx8025.
581
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582config RTC_DRV_EM3027
583 tristate "EM Microelectronic EM3027"
584 help
585 If you say yes here you get support for the EM
586 Microelectronic EM3027 RTC chips.
587
588 This driver can also be built as a module. If so, the module
589 will be called rtc-em3027.
590
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591config RTC_DRV_RV3029C2
592 tristate "Micro Crystal RTC"
593 help
594 If you say yes here you get support for the Micro Crystal
595 RV3029-C2 RTC chips.
596
597 This driver can also be built as a module. If so, the module
598 will be called rtc-rv3029c2.
599
5bccae6e 600config RTC_DRV_S5M
0c5deb1e 601 tristate "Samsung S2M/S5M series"
5bccae6e
SK
602 depends on MFD_SEC_CORE
603 help
604 If you say yes here you will get support for the
0c5deb1e 605 RTC of Samsung S2MPS14 and S5M PMIC series.
5bccae6e
SK
606
607 This driver can also be built as a module. If so, the module
608 will be called rtc-s5m.
609
bb35fb20
JE
610endif # I2C
611
09a21e56 612comment "SPI RTC drivers"
bb35fb20
JE
613
614if SPI_MASTER
09a21e56 615
74d34d4b
VN
616config RTC_DRV_M41T93
617 tristate "ST M41T93"
618 help
619 If you say yes here you will get support for the
620 ST M41T93 SPI RTC chip.
621
622 This driver can also be built as a module. If so, the module
623 will be called rtc-m41t93.
624
8fc2c767
KH
625config RTC_DRV_M41T94
626 tristate "ST M41T94"
627 help
628 If you say yes here you will get support for the
629 ST M41T94 SPI RTC chip.
630
631 This driver can also be built as a module. If so, the module
632 will be called rtc-m41t94.
633
53e84b67
DB
634config RTC_DRV_DS1305
635 tristate "Dallas/Maxim DS1305/DS1306"
636 help
637 Select this driver to get support for the Dallas/Maxim DS1305
ae64d169 638 and DS1306 real time clock chips. These support a trickle
53e84b67
DB
639 charger, alarms, and NVRAM in addition to the clock.
640
641 This driver can also be built as a module. If so, the module
642 will be called rtc-ds1305.
643
1d6316f5 644config RTC_DRV_DS1343
0dd449b1 645 select REGMAP_SPI
1d6316f5
RG
646 tristate "Dallas/Maxim DS1343/DS1344"
647 help
648 If you say yes here you get support for the
649 Dallas/Maxim DS1343 and DS1344 real time clock chips.
650 Support for trickle charger, alarm is provided.
651
652 This driver can also be built as a module. If so, the module
653 will be called rtc-ds1343.
654
617b26a0
RG
655config RTC_DRV_DS1347
656 tristate "Dallas/Maxim DS1347"
657 help
658 If you say yes here you get support for the
659 Dallas/Maxim DS1347 chips.
660
661 This driver only supports the RTC feature, and not other chip
662 features such as alarms.
663
664 This driver can also be built as a module. If so, the module
665 will be called rtc-ds1347.
666
06de1808
MJ
667config RTC_DRV_DS1390
668 tristate "Dallas/Maxim DS1390/93/94"
669 help
7b9b2ef1
AZ
670 If you say yes here you get support for the
671 Dallas/Maxim DS1390/93/94 chips.
06de1808
MJ
672
673 This driver only supports the RTC feature, and not other chip
674 features such as alarms and trickle charging.
675
676 This driver can also be built as a module. If so, the module
677 will be called rtc-ds1390.
678
09b6bdb3
AZ
679config RTC_DRV_MAX6902
680 tristate "Maxim MAX6902"
681 help
682 If you say yes here you will get support for the
683 Maxim MAX6902 SPI RTC chip.
684
685 This driver can also be built as a module. If so, the module
686 will be called rtc-max6902.
687
2805b969
MD
688config RTC_DRV_R9701
689 tristate "Epson RTC-9701JE"
690 help
691 If you say yes here you will get support for the
692 Epson RTC-9701JE SPI RTC chip.
693
694 This driver can also be built as a module. If so, the module
695 will be called rtc-r9701.
696
e0ac4761
AN
697config RTC_DRV_RS5C348
698 tristate "Ricoh RS5C348A/B"
e0ac4761
AN
699 help
700 If you say yes here you get support for the
701 Ricoh RS5C348A and RS5C348B RTC chips.
702
703 This driver can also be built as a module. If so, the module
704 will be called rtc-rs5c348.
705
2f9b75e0
DA
706config RTC_DRV_DS3234
707 tristate "Maxim/Dallas DS3234"
708 help
709 If you say yes here you get support for the
710 Maxim/Dallas DS3234 SPI RTC chip.
711
712 This driver can also be built as a module. If so, the module
713 will be called rtc-ds3234.
714
7f3923a1
CV
715config RTC_DRV_PCF2123
716 tristate "NXP PCF2123"
717 help
718 If you say yes here you get support for the NXP PCF2123
719 RTC chip.
720
721 This driver can also be built as a module. If so, the module
722 will be called rtc-pcf2123.
723
cce2da9a
TH
724config RTC_DRV_RX4581
725 tristate "Epson RX-4581"
726 help
727 If you say yes here you will get support for the Epson RX-4581.
728
729 This driver can also be built as a module. If so the module
730 will be called rtc-rx4581.
731
1fcbe42c
JG
732config RTC_DRV_MCP795
733 tristate "Microchip MCP795"
734 help
735 If you say yes here you will get support for the Microchip MCP795.
736
737 This driver can also be built as a module. If so the module
738 will be called rtc-mcp795.
739
bb35fb20
JE
740endif # SPI_MASTER
741
09a21e56 742comment "Platform RTC drivers"
09a21e56
AZ
743
744# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
745# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
746# global rtc_lock ... it's not yet just another platform_device.
747
748config RTC_DRV_CMOS
749 tristate "PC-style 'CMOS'"
41c9dbf4 750 depends on X86 || ARM || M32R || PPC || MIPS || SPARC64
c7500900 751 default y if X86
09a21e56
AZ
752 help
753 Say "yes" here to get direct support for the real time clock
754 found in every PC or ACPI-based system, and some other boards.
755 Specifically the original MC146818, compatibles like those in
756 PC south bridges, the DS12887 or M48T86, some multifunction
757 or LPC bus chips, and so on.
758
759 Your system will need to define the platform device used by
ae64d169 760 this driver, otherwise it won't be accessible. This means
09a21e56
AZ
761 you can safely enable this driver if you don't know whether
762 or not your board has this kind of hardware.
763
764 This driver can also be built as a module. If so, the module
765 will be called rtc-cmos.
766
85d0b3a5
RH
767config RTC_DRV_ALPHA
768 bool "Alpha PC-style CMOS"
769 depends on ALPHA
770 default y
771 help
772 Direct support for the real-time clock found on every Alpha
773 system, specifically MC146818 compatibles. If in doubt, say Y.
774
0146f261 775config RTC_DRV_VRTC
933b9463
AC
776 tristate "Virtual RTC for Intel MID platforms"
777 depends on X86_INTEL_MID
778 default y if X86_INTEL_MID
0146f261
FT
779
780 help
781 Say "yes" here to get direct support for the real time clock
782 found on Moorestown platforms. The VRTC is a emulated RTC that
783 derives its clock source from a real RTC in the PMIC. The MC146818
784 style programming interface is mostly conserved, but any
785 updates are done via IPC calls to the system controller FW.
786
537739de
TB
787config RTC_DRV_DS1216
788 tristate "Dallas DS1216"
bb35fb20 789 depends on SNI_RM
537739de
TB
790 help
791 If you say yes here you get support for the Dallas DS1216 RTC chips.
792
5f119f29
TB
793config RTC_DRV_DS1286
794 tristate "Dallas DS1286"
706b632d 795 depends on HAS_IOMEM
5f119f29
TB
796 help
797 If you say yes here you get support for the Dallas DS1286 RTC chips.
798
739d340d
PM
799config RTC_DRV_DS1302
800 tristate "Dallas DS1302"
801 depends on SH_SECUREEDGE5410
802 help
803 If you say yes here you get support for the Dallas DS1302 RTC chips.
804
8f26795a
AS
805config RTC_DRV_DS1511
806 tristate "Dallas DS1511"
706b632d 807 depends on HAS_IOMEM
8f26795a
AS
808 help
809 If you say yes here you get support for the
810 Dallas DS1511 timekeeping/watchdog chip.
811
812 This driver can also be built as a module. If so, the module
813 will be called rtc-ds1511.
814
09a21e56 815config RTC_DRV_DS1553
09b6bdb3 816 tristate "Maxim/Dallas DS1553"
706b632d 817 depends on HAS_IOMEM
7520b94d
AZ
818 help
819 If you say yes here you get support for the
09b6bdb3 820 Maxim/Dallas DS1553 timekeeping chip.
7520b94d
AZ
821
822 This driver can also be built as a module. If so, the module
09a21e56
AZ
823 will be called rtc-ds1553.
824
aaaf5fbf
JK
825config RTC_DRV_DS1685_FAMILY
826 tristate "Dallas/Maxim DS1685 Family"
827 help
828 If you say yes here you get support for the Dallas/Maxim DS1685
829 family of real time chips. This family includes the DS1685/DS1687,
830 DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
831 DS17885/DS17887 chips.
832
833 This driver can also be built as a module. If so, the module
834 will be called rtc-ds1685.
835
836choice
837 prompt "Subtype"
838 depends on RTC_DRV_DS1685_FAMILY
839 default RTC_DRV_DS1685
840
841config RTC_DRV_DS1685
842 bool "DS1685/DS1687"
843 help
844 This enables support for the Dallas/Maxim DS1685/DS1687 real time
845 clock chip.
846
847 This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
848 systems, as well as EPPC-405-UC modules by electronic system design
849 GmbH.
850
851config RTC_DRV_DS1689
852 bool "DS1689/DS1693"
853 help
854 This enables support for the Dallas/Maxim DS1689/DS1693 real time
855 clock chip.
856
857 This is an older RTC chip, supplanted by the DS1685/DS1687 above,
858 which supports a few minor features such as Vcc, Vbat, and Power
859 Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
860
861 It also works for the even older DS1688/DS1691 RTC chips, which are
862 virtually the same and carry the same model number. Both chips
863 have 114 bytes of user NVRAM.
864
865config RTC_DRV_DS17285
866 bool "DS17285/DS17287"
867 help
868 This enables support for the Dallas/Maxim DS17285/DS17287 real time
869 clock chip.
870
871 This chip features 2kb of extended NV-SRAM. It may possibly be
872 found in some SGI O2 systems (rare).
873
874config RTC_DRV_DS17485
875 bool "DS17485/DS17487"
876 help
877 This enables support for the Dallas/Maxim DS17485/DS17487 real time
878 clock chip.
879
880 This chip features 4kb of extended NV-SRAM.
881
882config RTC_DRV_DS17885
883 bool "DS17885/DS17887"
884 help
885 This enables support for the Dallas/Maxim DS17885/DS17887 real time
886 clock chip.
887
888 This chip features 8kb of extended NV-SRAM.
889
890endchoice
891
892config RTC_DS1685_PROC_REGS
893 bool "Display register values in /proc"
894 depends on RTC_DRV_DS1685_FAMILY && PROC_FS
895 help
896 Enable this to display a readout of all of the RTC registers in
897 /proc/drivers/rtc. Keep in mind that this can potentially lead
898 to lost interrupts, as reading Control Register C will clear
899 all pending IRQ flags.
900
901 Unless you are debugging this driver, choose N.
902
903config RTC_DS1685_SYSFS_REGS
904 bool "SysFS access to RTC register bits"
905 depends on RTC_DRV_DS1685_FAMILY && SYSFS
906 help
907 Enable this to provide access to the RTC control register bits
908 in /sys. Some of the bits are read-write, others are read-only.
909
910 Keep in mind that reading Control C's bits automatically clears
911 all pending IRQ flags - this can cause lost interrupts.
912
913 If you know that you need access to these bits, choose Y, Else N.
914
09b6bdb3
AZ
915config RTC_DRV_DS1742
916 tristate "Maxim/Dallas DS1742/1743"
706b632d 917 depends on HAS_IOMEM
02964115
TH
918 help
919 If you say yes here you get support for the
09b6bdb3 920 Maxim/Dallas DS1742/1743 timekeeping chip.
02964115
TH
921
922 This driver can also be built as a module. If so, the module
09b6bdb3 923 will be called rtc-ds1742.
02964115 924
ad0200f7
JD
925config RTC_DRV_DS2404
926 tristate "Maxim/Dallas DS2404"
927 help
928 If you say yes here you get support for the
929 Dallas DS2404 RTC chip.
930
931 This driver can also be built as a module. If so, the module
932 will be called rtc-ds2404.
933
fef931ff
AJ
934config RTC_DRV_DA9052
935 tristate "Dialog DA9052/DA9053 RTC"
936 depends on PMIC_DA9052
937 help
938 Say y here to support the RTC driver for Dialog Semiconductor
939 DA9052-BC and DA9053-AA/Bx PMICs.
940
6920d996
AJ
941config RTC_DRV_DA9055
942 tristate "Dialog Semiconductor DA9055 RTC"
943 depends on MFD_DA9055
944 help
945 If you say yes here you will get support for the
946 RTC of the Dialog DA9055 PMIC.
947
948 This driver can also be built as a module. If so, the module
949 will be called rtc-da9055
950
c2a57550
OST
951config RTC_DRV_DA9063
952 tristate "Dialog Semiconductor DA9063 RTC"
953 depends on MFD_DA9063
954 help
955 If you say yes here you will get support for the RTC subsystem
956 of the Dialog Semiconductor DA9063.
957
958 This driver can also be built as a module. If so, the module
959 will be called "rtc-da9063".
960
5e3fd9e5 961config RTC_DRV_EFI
962 tristate "EFI RTC"
7efe6659 963 depends on EFI && !X86
5e3fd9e5 964 help
965 If you say yes here you will get support for the EFI
966 Real Time Clock.
967
968 This driver can also be built as a module. If so, the module
969 will be called rtc-efi.
970
09b6bdb3
AZ
971config RTC_DRV_STK17TA8
972 tristate "Simtek STK17TA8"
706b632d 973 depends on HAS_IOMEM
09a21e56
AZ
974 help
975 If you say yes here you get support for the
09b6bdb3 976 Simtek STK17TA8 timekeeping chip.
09a21e56
AZ
977
978 This driver can also be built as a module. If so, the module
09b6bdb3 979 will be called rtc-stk17ta8.
09a21e56
AZ
980
981config RTC_DRV_M48T86
982 tristate "ST M48T86/Dallas DS12887"
09a21e56
AZ
983 help
984 If you say Y here you will get support for the
985 ST M48T86 and Dallas DS12887 RTC chips.
986
987 This driver can also be built as a module. If so, the module
988 will be called rtc-m48t86.
989
d1dbd82e
TB
990config RTC_DRV_M48T35
991 tristate "ST M48T35"
706b632d 992 depends on HAS_IOMEM
d1dbd82e
TB
993 help
994 If you say Y here you will get support for the
995 ST M48T35 RTC chip.
996
997 This driver can also be built as a module, if so, the module
998 will be called "rtc-m48t35".
999
2e774c7c 1000config RTC_DRV_M48T59
94fe7424 1001 tristate "ST M48T59/M48T08/M48T02"
706b632d 1002 depends on HAS_IOMEM
2e774c7c
MZ
1003 help
1004 If you say Y here you will get support for the
94fe7424
KH
1005 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1006
1007 These chips are usually found in Sun SPARC and UltraSPARC
1008 workstations.
2e774c7c
MZ
1009
1010 This driver can also be built as a module, if so, the module
1011 will be called "rtc-m48t59".
1012
4f9b9bba
GU
1013config RTC_DRV_MSM6242
1014 tristate "Oki MSM6242"
706b632d 1015 depends on HAS_IOMEM
4f9b9bba
GU
1016 help
1017 If you say yes here you get support for the Oki MSM6242
1018 timekeeping chip. It is used in some Amiga models (e.g. A2000).
1019
1020 This driver can also be built as a module. If so, the module
1021 will be called rtc-msm6242.
1022
cca4c231
DM
1023config RTC_DRV_BQ4802
1024 tristate "TI BQ4802"
706b632d 1025 depends on HAS_IOMEM
cca4c231
DM
1026 help
1027 If you say Y here you will get support for the TI
1028 BQ4802 RTC chip.
1029
1030 This driver can also be built as a module. If so, the module
1031 will be called rtc-bq4802.
1032
4f672ce2
GU
1033config RTC_DRV_RP5C01
1034 tristate "Ricoh RP5C01"
706b632d 1035 depends on HAS_IOMEM
4f672ce2
GU
1036 help
1037 If you say yes here you get support for the Ricoh RP5C01
1038 timekeeping chip. It is used in some Amiga models (e.g. A3000
1039 and A4000).
1040
1041 This driver can also be built as a module. If so, the module
1042 will be called rtc-rp5c01.
1043
09a21e56
AZ
1044config RTC_DRV_V3020
1045 tristate "EM Microelectronic V3020"
09a21e56
AZ
1046 help
1047 If you say yes here you will get support for the
1048 EM Microelectronic v3020 RTC chip.
1049
1050 This driver can also be built as a module. If so, the module
1051 will be called rtc-v3020.
1052
35c86bf6
MB
1053config RTC_DRV_WM831X
1054 tristate "Wolfson Microelectronics WM831x RTC"
1055 depends on MFD_WM831X
1056 help
1057 If you say yes here you will get support for the RTC subsystem
1058 of the Wolfson Microelectronics WM831X series PMICs.
1059
1060 This driver can also be built as a module. If so, the module
1061 will be called "rtc-wm831x".
1062
077eaf5b
MB
1063config RTC_DRV_WM8350
1064 tristate "Wolfson Microelectronics WM8350 RTC"
1065 depends on MFD_WM8350
1066 help
1067 If you say yes here you will get support for the RTC subsystem
1068 of the Wolfson Microelectronics WM8350.
1069
1070 This driver can also be built as a module. If so, the module
1071 will be called "rtc-wm8350".
1072
0942a71e
RK
1073config RTC_DRV_SPEAR
1074 tristate "SPEAR ST RTC"
1075 depends on PLAT_SPEAR
1076 default y
1077 help
1078 If you say Y here you will get support for the RTC found on
1079 spear
1080
eae854b2
BR
1081config RTC_DRV_PCF50633
1082 depends on MFD_PCF50633
1083 tristate "NXP PCF50633 RTC"
1084 help
1085 If you say yes here you get support for the RTC subsystem of the
1086 NXP PCF50633 used in embedded systems.
1087
bd207cfb
LW
1088config RTC_DRV_AB3100
1089 tristate "ST-Ericsson AB3100 RTC"
1090 depends on AB3100_CORE
1091 default y if AB3100_CORE
1092 help
1093 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1094 support. This chip contains a battery- and capacitor-backed RTC.
1095
0af62f4d
VS
1096config RTC_DRV_AB8500
1097 tristate "ST-Ericsson AB8500 RTC"
1098 depends on AB8500_CORE
651fb480 1099 select RTC_INTF_DEV
dc43d4a2 1100 select RTC_INTF_DEV_UIE_EMUL
0af62f4d
VS
1101 help
1102 Select this to enable the ST-Ericsson AB8500 power management IC RTC
1103 support. This chip contains a battery- and capacitor-backed RTC.
1104
afd49a7e
WZ
1105config RTC_DRV_NUC900
1106 tristate "NUC910/NUC920 RTC driver"
6b8029fa 1107 depends on ARCH_W90X900
afd49a7e
WZ
1108 help
1109 If you say yes here you get support for the RTC subsystem of the
1110 NUC910/NUC920 used in embedded systems.
bd207cfb 1111
16b1d26e
NG
1112config RTC_DRV_OPAL
1113 tristate "IBM OPAL RTC driver"
1114 depends on PPC_POWERNV
1115 default y
1116 help
1117 If you say yes here you get support for the PowerNV platform RTC
1118 driver based on OPAL interfaces.
1119
1120 This driver can also be built as a module. If so, the module
1121 will be called rtc-opal.
1122
09a21e56 1123comment "on-CPU RTC drivers"
09a21e56 1124
8ecf6c54
MA
1125config RTC_DRV_DAVINCI
1126 tristate "TI DaVinci RTC"
1127 depends on ARCH_DAVINCI_DM365
1128 help
1129 If you say yes here you get support for the RTC on the
1130 DaVinci platforms (DM365).
1131
1132 This driver can also be built as a module. If so, the module
1133 will be called rtc-davinci.
1134
ba172208
BS
1135config RTC_DRV_DIGICOLOR
1136 tristate "Conexant Digicolor RTC"
1137 depends on ARCH_DIGICOLOR
1138 help
1139 If you say yes here you get support for the RTC on Conexant
1140 Digicolor platforms. This currently includes the CX92755 SoC.
1141
1142 This driver can also be built as a module. If so, the module
1143 will be called rtc-digicolor.
1144
b224b9ac
FE
1145config RTC_DRV_IMXDI
1146 tristate "Freescale IMX DryIce Real Time Clock"
ef216ad0 1147 depends on ARCH_MXC
b224b9ac
FE
1148 help
1149 Support for Freescale IMX DryIce RTC
1150
1151 This driver can also be built as a module, if so, the module
1152 will be called "rtc-imxdi".
1153
09a21e56 1154config RTC_DRV_OMAP
8608976e
LV
1155 tristate "TI OMAP Real Time Clock"
1156 depends on ARCH_OMAP || ARCH_DAVINCI
09a21e56 1157 help
427af9a6 1158 Say "yes" here to support the on chip real time clock
8608976e 1159 present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
427af9a6
AM
1160
1161 This driver can also be built as a module, if so, module
1162 will be called rtc-omap.
7520b94d 1163
16f4efe7
AD
1164config HAVE_S3C_RTC
1165 bool
1166 help
1167 This will include RTC support for Samsung SoCs. If
1168 you want to include RTC support for any machine, kindly
1169 select this in the respective mach-XXXX/Kconfig file.
1170
1add6781
BD
1171config RTC_DRV_S3C
1172 tristate "Samsung S3C series SoC RTC"
b130d5c2 1173 depends on ARCH_S3C64XX || HAVE_S3C_RTC
1add6781
BD
1174 help
1175 RTC (Realtime Clock) driver for the clock inbuilt into the
1176 Samsung S3C24XX series of SoCs. This can provide periodic
1177 interrupt rates from 1Hz to 64Hz for user programs, and
1178 wakeup from Alarm.
1179
1180 The driver currently supports the common features on all the
1181 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1182 and S3C2442.
1183
1184 This driver can also be build as a module. If so, the module
1185 will be called rtc-s3c.
1186
fd507e2f
AZ
1187config RTC_DRV_EP93XX
1188 tristate "Cirrus Logic EP93XX"
bb35fb20 1189 depends on ARCH_EP93XX
fd507e2f
AZ
1190 help
1191 If you say yes here you get support for the
1192 RTC embedded in the Cirrus Logic EP93XX processors.
1193
1194 This driver can also be built as a module. If so, the module
1195 will be called rtc-ep93xx.
1196
e842f1c8 1197config RTC_DRV_SA1100
3888c090
HZ
1198 tristate "SA11x0/PXA2xx/PXA910"
1199 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
e842f1c8
RP
1200 help
1201 If you say Y here you will get access to the real time clock
1202 built into your SA11x0 or PXA2xx CPU.
1203
1204 To compile this driver as a module, choose M here: the
1205 module will be called rtc-sa1100.
fd507e2f 1206
317a6104
PM
1207config RTC_DRV_SH
1208 tristate "SuperH On-Chip RTC"
6b8029fa 1209 depends on SUPERH && HAVE_CLK
317a6104
PM
1210 help
1211 Say Y here to enable support for the on-chip RTC found in
1212 most SuperH processors.
1213
1214 To compile this driver as a module, choose M here: the
1215 module will be called rtc-sh.
1216
8417eb7a 1217config RTC_DRV_VR41XX
3e16f6af 1218 tristate "NEC VR41XX"
bb35fb20 1219 depends on CPU_VR41XX
3e16f6af
AZ
1220 help
1221 If you say Y here you will get access to the real time clock
1222 built into your NEC VR41XX CPU.
1223
1224 To compile this driver as a module, choose M here: the
1225 module will be called rtc-vr41xx.
8417eb7a 1226
a190901c
RK
1227config RTC_DRV_PL030
1228 tristate "ARM AMBA PL030 RTC"
1229 depends on ARM_AMBA
1230 help
1231 If you say Y here you will get access to ARM AMBA
1232 PrimeCell PL030 RTC found on certain ARM SOCs.
1233
1234 To compile this driver as a module, choose M here: the
1235 module will be called rtc-pl030.
1236
8ae6e163
DS
1237config RTC_DRV_PL031
1238 tristate "ARM AMBA PL031 RTC"
bb35fb20 1239 depends on ARM_AMBA
8ae6e163
DS
1240 help
1241 If you say Y here you will get access to ARM AMBA
09a21e56 1242 PrimeCell PL031 RTC found on certain ARM SOCs.
8ae6e163
DS
1243
1244 To compile this driver as a module, choose M here: the
1245 module will be called rtc-pl031.
1246
fa04e78b
HCE
1247config RTC_DRV_AT32AP700X
1248 tristate "AT32AP700X series RTC"
bb35fb20 1249 depends on PLATFORM_AT32AP
fa04e78b
HCE
1250 help
1251 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
1252 AT32AP700x family processors.
1253
7fc39f6d 1254config RTC_DRV_AT91RM9200
24cecc1b 1255 tristate "AT91RM9200 or some AT91SAM9 RTC"
938f970e 1256 depends on ARCH_AT91
4cdf854f
DB
1257 help
1258 Driver for the internal RTC (Realtime Clock) module found on
24cecc1b 1259 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
4cdf854f
DB
1260 this is powered by the backup power supply.
1261
1262config RTC_DRV_AT91SAM9
3969eb48 1263 tristate "AT91SAM9 RTT as RTC"
ee72f18b 1264 depends on ARCH_AT91
43e112bb 1265 select MFD_SYSCON
4cdf854f 1266 help
3969eb48
BB
1267 Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1268 can be used as an RTC thanks to the backup power supply (e.g. a
1269 small coin cell battery) which keeps this block and the GPBR
1270 (General Purpose Backup Registers) block powered when the device
1271 is shutdown.
1272 Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1273 probably want to use the real RTC block instead of the "RTT as an
1274 RTC" driver.
4cdf854f 1275
45fd8a0c
ML
1276config RTC_DRV_AU1XXX
1277 tristate "Au1xxx Counter0 RTC support"
42a4f17d 1278 depends on MIPS_ALCHEMY
45fd8a0c
ML
1279 help
1280 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1281 counter) to be used as a RTC.
1282
1283 This driver can also be built as a module. If so, the module
1284 will be called rtc-au1xxx.
1285
8cc75c9a
WB
1286config RTC_DRV_BFIN
1287 tristate "Blackfin On-Chip RTC"
7f604599 1288 depends on BLACKFIN && !BF561
8cc75c9a
WB
1289 help
1290 If you say yes here you will get support for the
1291 Blackfin On-Chip Real Time Clock.
1292
1293 This driver can also be built as a module. If so, the module
1294 will be called rtc-bfin.
1295
e9f2bd81
NI
1296config RTC_DRV_RS5C313
1297 tristate "Ricoh RS5C313"
bb35fb20 1298 depends on SH_LANDISK
e9f2bd81
NI
1299 help
1300 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1301
3afe6d04
GU
1302config RTC_DRV_GENERIC
1303 tristate "Generic RTC support"
1304 # Please consider writing a new RTC driver instead of using the generic
1305 # RTC abstraction
47c8a08b 1306 depends on PARISC || M68K || PPC || SUPERH32
9eb16864 1307 help
3afe6d04
GU
1308 Say Y or M here to enable RTC support on systems using the generic
1309 RTC abstraction. If you do not know what you are doing, you should
9eb16864
KM
1310 just say Y.
1311
dc944368
RJ
1312config RTC_DRV_PXA
1313 tristate "PXA27x/PXA3xx"
1314 depends on ARCH_PXA
1315 help
1316 If you say Y here you will get access to the real time clock
1317 built into your PXA27x or PXA3xx CPU.
1318
1319 This RTC driver uses PXA RTC registers available since pxa27x
1320 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1321
f77fbdf9
AC
1322config RTC_DRV_VT8500
1323 tristate "VIA/WonderMedia 85xx SoC RTC"
1324 depends on ARCH_VT8500
1325 help
1326 If you say Y here you will get access to the real time clock
1327 built into your VIA VT8500 SoC or its relatives.
1328
dc944368 1329
7a138ede
DM
1330config RTC_DRV_SUN4V
1331 bool "SUN4V Hypervisor RTC"
1332 depends on SPARC64
1333 help
1334 If you say Y here you will get support for the Hypervisor
1335 based RTC on SUN4V systems.
1336
9765d2d9
CYT
1337config RTC_DRV_SUN6I
1338 tristate "Allwinner A31 RTC"
1339 depends on MACH_SUN6I || MACH_SUN8I
1340 help
1341 If you say Y here you will get support for the RTC found on
1342 Allwinner A31.
1343
594c6fb9
CC
1344config RTC_DRV_SUNXI
1345 tristate "Allwinner sun4i/sun7i RTC"
64a1925c 1346 depends on MACH_SUN4I || MACH_SUN7I
594c6fb9
CC
1347 help
1348 If you say Y here you will get support for the RTC found on
1349 Allwinner A10/A20.
1350
de2cf332
DM
1351config RTC_DRV_STARFIRE
1352 bool "Starfire RTC"
1353 depends on SPARC64
1354 help
1355 If you say Y here you will get support for the RTC found on
1356 Starfire systems.
1357
0e149233
AN
1358config RTC_DRV_TX4939
1359 tristate "TX4939 SoC"
1360 depends on SOC_TX4939
1361 help
1362 Driver for the internal RTC (Realtime Clock) module found on
1363 Toshiba TX4939 SoC.
1364
defb4514
SB
1365config RTC_DRV_MV
1366 tristate "Marvell SoC RTC"
ace2c020 1367 depends on ARCH_DOVE || ARCH_MVEBU
defb4514
SB
1368 help
1369 If you say yes here you will get support for the in-chip RTC
1370 that can be found in some of Marvell's SoC devices, such as
1371 the Kirkwood 88F6281 and 88F6192.
1372
1373 This driver can also be built as a module. If so, the module
1374 will be called rtc-mv.
1375
a3a42806
GC
1376config RTC_DRV_ARMADA38X
1377 tristate "Armada 38x Marvell SoC RTC"
1378 depends on ARCH_MVEBU
1379 help
1380 If you say yes here you will get support for the in-chip RTC
1381 that can be found in the Armada 38x Marvell's SoC device
1382
1383 This driver can also be built as a module. If so, the module
1384 will be called armada38x-rtc.
1385
98a9bb5b
HUK
1386config RTC_DRV_GEMINI
1387 tristate "Gemini SoC RTC"
1388 depends on ARCH_GEMINI || COMPILE_TEST
1389 depends on HAS_IOMEM
1390 help
1391 If you say Y here you will get support for the
1392 RTC found on Gemini SoC's.
1393
1394 This driver can also be built as a module. If so, the module
1395 will be called rtc-gemini.
1396
0b5f037a
GU
1397config RTC_DRV_PS3
1398 tristate "PS3 RTC"
1399 depends on PPC_PS3
1400 help
1401 If you say yes here you will get support for the RTC on PS3.
1402
1403 This driver can also be built as a module. If so, the module
1404 will be called rtc-ps3.
1405
aa958f57
LW
1406config RTC_DRV_COH901331
1407 tristate "ST-Ericsson COH 901 331 RTC"
1408 depends on ARCH_U300
1409 help
1410 If you say Y here you will get access to ST-Ericsson
1411 COH 901 331 RTC clock found in some ST-Ericsson Mobile
1412 Platforms.
1413
1414 This driver can also be built as a module. If so, the module
1415 will be called "rtc-coh901331".
1416
1417
df17f631 1418config RTC_DRV_STMP
46b21218
WS
1419 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1420 depends on ARCH_MXS
20d048ac 1421 select STMP_DEVICE
df17f631 1422 help
1423 If you say yes here you will get support for the onboard
46b21218 1424 STMP3xxx/i.MX23/i.MX28 RTC.
df17f631 1425
1426 This driver can also be built as a module. If so, the module
1427 will be called rtc-stmp3xxx.
1428
d3c7a3f7
DR
1429config RTC_DRV_PCAP
1430 tristate "PCAP RTC"
1431 depends on EZX_PCAP
1432 help
1433 If you say Y here you will get support for the RTC found on
1434 the PCAP2 ASIC used on some Motorola phones.
1435
1c97872b
UKK
1436config RTC_DRV_MC13XXX
1437 depends on MFD_MC13XXX
1438 tristate "Freescale MC13xxx RTC"
43299f28 1439 help
1c97872b
UKK
1440 This enables support for the RTCs found on Freescale's PMICs
1441 MC13783 and MC13892.
43299f28 1442
50aae724
AG
1443config RTC_DRV_MPC5121
1444 tristate "Freescale MPC5121 built-in RTC"
955dbea3 1445 depends on PPC_MPC512x || PPC_MPC52xx
50aae724
AG
1446 help
1447 If you say yes here you will get support for the
955dbea3 1448 built-in RTC on MPC5121 or on MPC5200.
50aae724
AG
1449
1450 This driver can also be built as a module. If so, the module
1451 will be called rtc-mpc5121.
1452
3bf0eea8
LPC
1453config RTC_DRV_JZ4740
1454 tristate "Ingenic JZ4740 SoC"
3bf0eea8
LPC
1455 depends on MACH_JZ4740
1456 help
1457 If you say yes here you get support for the Ingenic JZ4740 SoC RTC
1458 controller.
1459
1460 This driver can also be buillt as a module. If so, the module
1461 will be called rtc-jz4740.
1462
9aa449be
KW
1463config RTC_DRV_LPC32XX
1464 depends on ARCH_LPC32XX
1465 tristate "NXP LPC32XX RTC"
1466 help
1467 This enables support for the NXP RTC in the LPC32XX
1468
1469 This driver can also be buillt as a module. If so, the module
1470 will be called rtc-lpc32xx.
1471
9a9a54ad
AG
1472config RTC_DRV_PM8XXX
1473 tristate "Qualcomm PMIC8XXX RTC"
c8d523a4 1474 depends on MFD_PM8XXX || MFD_SPMI_PMIC
9a9a54ad
AG
1475 help
1476 If you say yes here you get support for the
1477 Qualcomm PMIC8XXX RTC.
1478
1479 To compile this driver as a module, choose M here: the
1480 module will be called rtc-pm8xxx.
1481
ff859ba6
AC
1482config RTC_DRV_TEGRA
1483 tristate "NVIDIA Tegra Internal RTC driver"
6b8029fa 1484 depends on ARCH_TEGRA
ff859ba6
AC
1485 help
1486 If you say yes here you get support for the
1487 Tegra 200 series internal RTC module.
1488
1489 This drive can also be built as a module. If so, the module
1490 will be called rtc-tegra.
1491
dd196a2b
CM
1492config RTC_DRV_TILE
1493 tristate "Tilera hypervisor RTC support"
1494 depends on TILE
1495 help
1496 Enable support for the Linux driver side of the Tilera
1497 hypervisor's real-time clock interface.
1498
2809e80b
GX
1499config RTC_DRV_PUV3
1500 tristate "PKUnity v3 RTC support"
1501 depends on ARCH_PUV3
1502 help
1503 This enables support for the RTC in the PKUnity-v3 SoCs.
1504
1505 This drive can also be built as a module. If so, the module
1506 will be called rtc-puv3.
1507
b4f0b880 1508config RTC_DRV_LOONGSON1
1509 tristate "loongson1 RTC support"
1510 depends on MACH_LOONGSON1
1511 help
1512 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1513 counter) to be used as a RTC.
1514
1515 This driver can also be built as a module. If so, the module
1516 will be called rtc-ls1x.
1517
79811595 1518config RTC_DRV_MXC
b224b9ac
FE
1519 tristate "Freescale MXC Real Time Clock"
1520 depends on ARCH_MXC
b224b9ac
FE
1521 help
1522 If you say yes here you get support for the Freescale MXC
1523 RTC module.
1524
1525 This driver can also be built as a module, if so, the module
1526 will be called "rtc-mxc".
1527
179a502f
SG
1528config RTC_DRV_SNVS
1529 tristate "Freescale SNVS RTC support"
1530 depends on HAS_IOMEM
1531 depends on OF
1532 help
1533 If you say yes here you get support for the Freescale SNVS
1534 Low Power (LP) RTC module.
1535
1536 This driver can also be built as a module, if so, the module
1537 will be called "rtc-snvs".
1538
e88b815e
XD
1539config RTC_DRV_SIRFSOC
1540 tristate "SiRFSOC RTC"
1541 depends on ARCH_SIRF
1542 help
1543 Say "yes" here to support the real time clock on SiRF SOC chips.
1544 This driver can also be built as a module called rtc-sirfsoc.
1545
453b4c6d
JJ
1546config RTC_DRV_MOXART
1547 tristate "MOXA ART RTC"
441fb768 1548 depends on ARCH_MOXART || COMPILE_TEST
453b4c6d
JJ
1549 help
1550 If you say yes here you get support for the MOXA ART
1551 RTC module.
1552
1553 This driver can also be built as a module. If so, the module
1554 will be called rtc-moxart
1555
fc297911
TF
1556config RTC_DRV_MT6397
1557 tristate "Mediatek Real Time Clock driver"
1558 depends on MFD_MT6397 || COMPILE_TEST
1559 help
1560 This selects the Mediatek(R) RTC driver. RTC is part of Mediatek
1561 MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1562 Mediatek(R) RTC driver.
1563
1564 If you want to use Mediatek(R) RTC interface, select Y or M here.
1565
f12d8695
LH
1566config RTC_DRV_XGENE
1567 tristate "APM X-Gene RTC"
706b632d 1568 depends on HAS_IOMEM
fdf8afa1 1569 depends on ARCH_XGENE || COMPILE_TEST
f12d8695
LH
1570 help
1571 If you say yes here you get support for the APM X-Gene SoC real time
1572 clock.
1573
1574 This driver can also be built as a module, if so, the module
1575 will be called "rtc-xgene".
1576
62e00cb9
AH
1577comment "HID Sensor RTC drivers"
1578
1579config RTC_DRV_HID_SENSOR_TIME
1580 tristate "HID Sensor Time"
1581 depends on USB_HID
1582 select IIO
1583 select HID_SENSOR_HUB
1584 select HID_SENSOR_IIO_COMMON
1585 help
1586 Say yes here to build support for the HID Sensors of type Time.
1587 This drivers makes such sensors available as RTCs.
1588
1589 If this driver is compiled as a module, it will be named
1590 rtc-hid-sensor-time.
1591
1592
bb35fb20 1593endif # RTC_CLASS
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