blob: 6a13037594326ddffe1364bc748409b64745afdf [file] [log] [blame]
David Brownell7be2c7c2007-02-10 01:46:02 -08001#
Alessandro Zummoc58411e2006-03-27 01:16:34 -08002# RTC class/drivers configuration
3#
4
5config RTC_LIB
Alessandro Zummo0c86edc2006-03-27 01:16:37 -08006 tristate
7
Jan Engelhardtbb35fb22007-07-31 00:39:46 -07008menuconfig RTC_CLASS
9 tristate "Real Time Clock"
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080010 default n
Jan Engelhardtbb35fb22007-07-31 00:39:46 -070011 depends on !S390
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080012 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
Adrian Bunk27ae4102006-06-30 18:18:41 +020016 probably want to enable one or more of the interfaces below.
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080017
18 This driver can also be built as a module. If so, the module
Alessandro Zummo44e04512008-03-19 17:00:51 -070019 will be called rtc-core.
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080020
Jan Engelhardtbb35fb22007-07-31 00:39:46 -070021if RTC_CLASS
22
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080023config RTC_HCTOSYS
David Brownell7ca1d482007-05-08 00:33:42 -070024 bool "Set system time from RTC on startup and resume"
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080025 depends on RTC_CLASS = y
26 default y
27 help
David Brownell7ca1d482007-05-08 00:33:42 -070028 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.
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080031
32config RTC_HCTOSYS_DEVICE
David Brownell7ca1d482007-05-08 00:33:42 -070033 string "RTC used to set the system time"
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080034 depends on RTC_HCTOSYS = y
35 default "rtc0"
36 help
David Brownell7ca1d482007-05-08 00:33:42 -070037 The RTC device that will be used to (re)initialize the system
Alessandro Zummoae64d162009-01-06 14:42:17 -080038 clock, usually rtc0. Initialization is done when the system
39 starts up, and when it resumes from a low power state. This
David Brownell779d2082007-11-14 16:58:29 -080040 device should record time in UTC, since the kernel won't do
41 timezone correction.
David Brownell7ca1d482007-05-08 00:33:42 -070042
David Brownell55ff1ab2007-07-21 04:37:56 -070043 The driver for this RTC device must be loaded before late_initcall
44 functions run, so it must usually be statically linked.
45
David Brownell7ca1d482007-05-08 00:33:42 -070046 This clock should be battery-backed, so that it reads the correct
Alessandro Zummoae64d162009-01-06 14:42:17 -080047 time when the system boots from a power-off state. Otherwise, your
David Brownell7ca1d482007-05-08 00:33:42 -070048 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
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -080052 sleep states. Do not specify an RTC here unless it stays powered
David Brownell7ca1d482007-05-08 00:33:42 -070053 during all this system's supported sleep states.
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080054
David Brownell9e86ecb2006-09-30 23:28:14 -070055config 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
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080062comment "RTC interfaces"
Alessandro Zummo0c86edc2006-03-27 01:16:37 -080063
Alessandro Zummoc5c3e192006-03-27 01:16:39 -080064config RTC_INTF_SYSFS
David Brownelle40659c2007-05-16 22:11:15 -070065 boolean "/sys/class/rtc/rtcN (sysfs)"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -070066 depends on SYSFS
Alessandro Zummoc5c3e192006-03-27 01:16:39 -080067 default RTC_CLASS
68 help
David Brownell9e86ecb2006-09-30 23:28:14 -070069 Say yes here if you want to use your RTCs using sysfs interfaces,
70 /sys/class/rtc/rtc0 through /sys/.../rtcN.
Alessandro Zummoc5c3e192006-03-27 01:16:39 -080071
Alessandro Zummoae64d162009-01-06 14:42:17 -080072 If unsure, say Y.
Alessandro Zummoc5c3e192006-03-27 01:16:39 -080073
Alessandro Zummo728a2942006-03-27 01:16:40 -080074config RTC_INTF_PROC
David Brownelle40659c2007-05-16 22:11:15 -070075 boolean "/proc/driver/rtc (procfs for rtc0)"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -070076 depends on PROC_FS
Alessandro Zummo728a2942006-03-27 01:16:40 -080077 default RTC_CLASS
78 help
David Brownell9e86ecb2006-09-30 23:28:14 -070079 Say yes here if you want to use your first RTC through the proc
Alessandro Zummoae64d162009-01-06 14:42:17 -080080 interface, /proc/driver/rtc. Other RTCs will not be available
David Brownell9e86ecb2006-09-30 23:28:14 -070081 through that API.
Alessandro Zummo728a2942006-03-27 01:16:40 -080082
Alessandro Zummoae64d162009-01-06 14:42:17 -080083 If unsure, say Y.
Alessandro Zummo728a2942006-03-27 01:16:40 -080084
Alessandro Zummoe8242902006-03-27 01:16:41 -080085config RTC_INTF_DEV
David Brownelle40659c2007-05-16 22:11:15 -070086 boolean "/dev/rtcN (character devices)"
Alessandro Zummoe8242902006-03-27 01:16:41 -080087 default RTC_CLASS
88 help
David Brownell9e86ecb2006-09-30 23:28:14 -070089 Say yes here if you want to use your RTCs using the /dev
90 interfaces, which "udev" sets up as /dev/rtc0 through
Alessandro Zummoae64d162009-01-06 14:42:17 -080091 /dev/rtcN.
Alessandro Zummoe8242902006-03-27 01:16:41 -080092
Alessandro Zummoae64d162009-01-06 14:42:17 -080093 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.
Alessandro Zummoe8242902006-03-27 01:16:41 -080099
Atsushi Nemoto655066c2006-06-25 05:48:17 -0700100config RTC_INTF_DEV_UIE_EMUL
101 bool "RTC UIE emulation on dev interface"
102 depends on RTC_INTF_DEV
103 help
David Sterba3dde6ad2007-05-09 07:12:20 +0200104 Provides an emulation for RTC_UIE if the underlying rtc chip
Alessandro Zummo099e6572009-01-04 12:00:54 -0800105 driver does not expose RTC_UIE ioctls. Those requests generate
David Brownell9e86ecb2006-09-30 23:28:14 -0700106 once-per-second update interrupts, used for synchronization.
Atsushi Nemoto655066c2006-06-25 05:48:17 -0700107
Alessandro Zummo099e6572009-01-04 12:00:54 -0800108 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
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700112config RTC_DRV_TEST
113 tristate "Test driver/device"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700114 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"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700127 depends on I2C
128
129if I2C
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700130
131config RTC_DRV_DS1307
Matthias Fuchsa2166852009-03-31 15:24:58 -0700132 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700133 help
134 If you say yes here you get support for various compatible RTC
Alessandro Zummoae64d162009-01-06 14:42:17 -0800135 chips (often with battery backup) connected with I2C. This driver
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700136 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
Matthias Fuchsa2166852009-03-31 15:24:58 -0700137 EPSON RX-8025 and probably other chips. In some cases the RTC
138 must already have been initialized (by manufacturing or a
139 bootloader).
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700140
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
Alessandro Zummoae64d162009-01-06 14:42:17 -0800143 the RTC/NVRAM backup power, and alarms. NVRAM is visible in
David Brownell682d73f2007-11-14 16:58:32 -0800144 sysfs, but other chip features may not be available.
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700145
146 This driver can also be built as a module. If so, the module
147 will be called rtc-ds1307.
148
Scott Woodbf4994d2007-10-16 01:28:19 -0700149config RTC_DRV_DS1374
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -0800150 tristate "Dallas/Maxim DS1374"
Scott Woodbf4994d2007-10-16 01:28:19 -0700151 depends on RTC_CLASS && I2C
152 help
153 If you say yes here you get support for Dallas Semiconductor
Alessandro Zummoae64d162009-01-06 14:42:17 -0800154 DS1374 real-time clock chips. If an interrupt is associated
Scott Woodbf4994d2007-10-16 01:28:19 -0700155 with the device, the alarm functionality is supported.
156
Alessandro Zummoae64d162009-01-06 14:42:17 -0800157 This driver can also be built as a module. If so, the module
Scott Woodbf4994d2007-10-16 01:28:19 -0700158 will be called rtc-ds1374.
159
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700160config RTC_DRV_DS1672
161 tristate "Dallas/Maxim DS1672"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700162 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
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -0800170 tristate "Maxim MAX6900"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700171 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
Haojian Zhuanga39069f2010-01-25 06:30:29 -0500178config RTC_DRV_MAX8925
179 tristate "Maxim MAX8925"
180 depends on MFD_MAX8925
181 help
182 If you say yes here you will get support for the
183 RTC of Maxim MAX8925 PMIC.
184
185 This driver can also be built as a module. If so, the module
186 will be called rtc-max8925.
187
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700188config RTC_DRV_RS5C372
Paul Mundt5d4529b2008-10-21 20:12:59 +0900189 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700190 help
191 If you say yes here you get support for the
Paul Mundt5d4529b2008-10-21 20:12:59 +0900192 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700193
194 This driver can also be built as a module. If so, the module
195 will be called rtc-rs5c372.
196
197config RTC_DRV_ISL1208
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -0800198 tristate "Intersil ISL1208"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700199 help
200 If you say yes here you get support for the
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -0800201 Intersil ISL1208 RTC chip.
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700202
203 This driver can also be built as a module. If so, the module
204 will be called rtc-isl1208.
205
206config RTC_DRV_X1205
207 tristate "Xicor/Intersil X1205"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700208 help
209 If you say yes here you get support for the
210 Xicor/Intersil X1205 RTC chip.
211
212 This driver can also be built as a module. If so, the module
213 will be called rtc-x1205.
214
215config RTC_DRV_PCF8563
216 tristate "Philips PCF8563/Epson RTC8564"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700217 help
218 If you say yes here you get support for the
219 Philips PCF8563 RTC chip. The Epson RTC8564
220 should work as well.
221
222 This driver can also be built as a module. If so, the module
223 will be called rtc-pcf8563.
224
225config RTC_DRV_PCF8583
226 tristate "Philips PCF8583"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700227 help
228 If you say yes here you get support for the Philips PCF8583
229 RTC chip found on Acorn RiscPCs. This driver supports the
230 platform specific method of retrieving the current year from
231 the RTC's SRAM. It will work on other platforms with the same
232 chip, but the year will probably have to be tweaked.
233
234 This driver can also be built as a module. If so, the module
235 will be called rtc-pcf8583.
236
Atsushi Nemotocaaff562007-07-17 04:05:02 -0700237config RTC_DRV_M41T80
Daniel Glocknerf30281f2009-04-02 16:57:03 -0700238 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
Atsushi Nemotocaaff562007-07-17 04:05:02 -0700239 help
Steven A. Falcod3a126f2008-10-15 22:03:07 -0700240 If you say Y here you will get support for the ST M41T60
241 and M41T80 RTC chips series. Currently, the following chips are
Daniel Glocknerf30281f2009-04-02 16:57:03 -0700242 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
Steven A. Falcod3a126f2008-10-15 22:03:07 -0700243 M41ST85, and M41ST87.
Atsushi Nemotocaaff562007-07-17 04:05:02 -0700244
245 This driver can also be built as a module. If so, the module
246 will be called rtc-m41t80.
247
Atsushi Nemoto617780d2007-07-17 04:05:04 -0700248config RTC_DRV_M41T80_WDT
Steven A. Falcod3a126f2008-10-15 22:03:07 -0700249 bool "ST M41T65/M41T80 series RTC watchdog timer"
Atsushi Nemoto617780d2007-07-17 04:05:04 -0700250 depends on RTC_DRV_M41T80
251 help
252 If you say Y here you will get support for the
Steven A. Falcod3a126f2008-10-15 22:03:07 -0700253 watchdog timer in the ST M41T60 and M41T80 RTC chips series.
Atsushi Nemoto617780d2007-07-17 04:05:04 -0700254
Piotr Ziecik1ce7c832009-12-15 16:46:12 -0800255config RTC_DRV_BQ32K
256 tristate "TI BQ32000"
257 help
258 If you say Y here you will get support for the TI
259 BQ32000 I2C RTC chip.
260
261 This driver can also be built as a module. If so, the module
262 will be called rtc-bq32k.
263
David Brownellafd8d0f2009-02-04 15:12:01 -0800264config RTC_DRV_DM355EVM
265 tristate "TI DaVinci DM355 EVM RTC"
266 depends on MFD_DM355EVM_MSP
267 help
268 Supports the RTC firmware in the MSP430 on the DM355 EVM.
269
Tony Lindgren0c4a59f2007-07-17 04:06:09 -0700270config RTC_DRV_TWL92330
271 boolean "TI TWL92330/Menelaus"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700272 depends on MENELAUS
Tony Lindgren0c4a59f2007-07-17 04:06:09 -0700273 help
274 If you say yes here you get support for the RTC on the
Matt LaPlante01dd2fb2007-10-20 01:34:40 +0200275 TWL92330 "Menelaus" power management chip, used with OMAP2
Alessandro Zummoae64d162009-01-06 14:42:17 -0800276 platforms. The support is integrated with the rest of
Tony Lindgren0c4a59f2007-07-17 04:06:09 -0700277 the Menelaus driver; it's not separate module.
278
David Brownellf96411a2008-10-20 23:50:05 +0200279config RTC_DRV_TWL4030
Balaji T Ka6b49ff2009-12-13 22:16:31 +0100280 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
David Brownellf96411a2008-10-20 23:50:05 +0200281 depends on RTC_CLASS && TWL4030_CORE
282 help
283 If you say yes here you get support for the RTC on the
Balaji T Ka6b49ff2009-12-13 22:16:31 +0100284 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
David Brownellf96411a2008-10-20 23:50:05 +0200285
286 This driver can also be built as a module. If so, the module
Balaji T Ka6b49ff2009-12-13 22:16:31 +0100287 will be called rtc-twl.
David Brownellf96411a2008-10-20 23:50:05 +0200288
Byron Bradleyc46288b2008-03-04 14:28:25 -0800289config RTC_DRV_S35390A
290 tristate "Seiko Instruments S-35390A"
Randy Dunlapd4795402008-04-10 21:29:18 -0700291 select BITREVERSE
Byron Bradleyc46288b2008-03-04 14:28:25 -0800292 help
293 If you say yes here you will get support for the Seiko
294 Instruments S-35390A.
295
296 This driver can also be built as a module. If so the module
297 will be called rtc-s35390a.
298
Sergey Lapinc6d8f402008-06-12 15:21:55 -0700299config RTC_DRV_FM3130
300 tristate "Ramtron FM3130"
301 help
302 If you say Y here you will get support for the
303 Ramtron FM3130 RTC chips.
304 Ramtron FM3130 is a chip with two separate devices inside,
305 RTC clock and FRAM. This driver provides only RTC functionality.
306
307 This driver can also be built as a module. If so the module
308 will be called rtc-fm3130.
309
Martyn Welcha7fa9852008-11-12 13:27:06 -0800310config RTC_DRV_RX8581
311 tristate "Epson RX-8581"
312 help
313 If you say yes here you will get support for the Epson RX-8581.
314
315 This driver can also be built as a module. If so the module
316 will be called rtc-rx8581.
317
Wolfgang Grandegger3c2b9072009-06-17 16:26:11 -0700318config RTC_DRV_RX8025
319 tristate "Epson RX-8025SA/NB"
320 help
321 If you say yes here you get support for the Epson
322 RX-8025SA/NB RTC chips.
323
324 This driver can also be built as a module. If so, the module
325 will be called rtc-rx8025.
326
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700327endif # I2C
328
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700329comment "SPI RTC drivers"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700330
331if SPI_MASTER
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700332
Kim B. Heino8fc2c762008-07-23 21:30:34 -0700333config RTC_DRV_M41T94
334 tristate "ST M41T94"
335 help
336 If you say yes here you will get support for the
337 ST M41T94 SPI RTC chip.
338
339 This driver can also be built as a module. If so, the module
340 will be called rtc-m41t94.
341
David Brownell53e84b62008-07-23 21:30:36 -0700342config RTC_DRV_DS1305
343 tristate "Dallas/Maxim DS1305/DS1306"
344 help
345 Select this driver to get support for the Dallas/Maxim DS1305
Alessandro Zummoae64d162009-01-06 14:42:17 -0800346 and DS1306 real time clock chips. These support a trickle
David Brownell53e84b62008-07-23 21:30:36 -0700347 charger, alarms, and NVRAM in addition to the clock.
348
349 This driver can also be built as a module. If so, the module
350 will be called rtc-ds1305.
351
Mark Jackson06de1802008-11-12 13:27:07 -0800352config RTC_DRV_DS1390
353 tristate "Dallas/Maxim DS1390/93/94"
354 help
Alessandro Zummo7b9b2ef2009-01-06 14:42:16 -0800355 If you say yes here you get support for the
356 Dallas/Maxim DS1390/93/94 chips.
Mark Jackson06de1802008-11-12 13:27:07 -0800357
358 This driver only supports the RTC feature, and not other chip
359 features such as alarms and trickle charging.
360
361 This driver can also be built as a module. If so, the module
362 will be called rtc-ds1390.
363
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -0800364config RTC_DRV_MAX6902
365 tristate "Maxim MAX6902"
366 help
367 If you say yes here you will get support for the
368 Maxim MAX6902 SPI RTC chip.
369
370 This driver can also be built as a module. If so, the module
371 will be called rtc-max6902.
372
Magnus Damm2805b962008-02-06 01:38:53 -0800373config RTC_DRV_R9701
374 tristate "Epson RTC-9701JE"
375 help
376 If you say yes here you will get support for the
377 Epson RTC-9701JE SPI RTC chip.
378
379 This driver can also be built as a module. If so, the module
380 will be called rtc-r9701.
381
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700382config RTC_DRV_RS5C348
383 tristate "Ricoh RS5C348A/B"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700384 help
385 If you say yes here you get support for the
386 Ricoh RS5C348A and RS5C348B RTC chips.
387
388 This driver can also be built as a module. If so, the module
389 will be called rtc-rs5c348.
390
Dennis Aberilla2f9b75e2008-10-15 22:02:57 -0700391config RTC_DRV_DS3234
392 tristate "Maxim/Dallas DS3234"
393 help
394 If you say yes here you get support for the
395 Maxim/Dallas DS3234 SPI RTC chip.
396
397 This driver can also be built as a module. If so, the module
398 will be called rtc-ds3234.
399
Chris Verges7f3923a2009-09-22 16:46:20 -0700400config RTC_DRV_PCF2123
401 tristate "NXP PCF2123"
402 help
403 If you say yes here you get support for the NXP PCF2123
404 RTC chip.
405
406 This driver can also be built as a module. If so, the module
407 will be called rtc-pcf2123.
408
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700409endif # SPI_MASTER
410
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700411comment "Platform RTC drivers"
Alessandro Zummo0c86edc2006-03-27 01:16:37 -0800412
David Brownell7be2c7c2007-02-10 01:46:02 -0800413# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
414# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
415# global rtc_lock ... it's not yet just another platform_device.
416
417config RTC_DRV_CMOS
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700418 tristate "PC-style 'CMOS'"
Andrew Morton5ec87702008-09-22 21:40:04 -0700419 depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
David Brownellc7500902008-04-28 02:11:52 -0700420 default y if X86
David Brownell7be2c7c2007-02-10 01:46:02 -0800421 help
422 Say "yes" here to get direct support for the real time clock
423 found in every PC or ACPI-based system, and some other boards.
424 Specifically the original MC146818, compatibles like those in
425 PC south bridges, the DS12887 or M48T86, some multifunction
426 or LPC bus chips, and so on.
427
428 Your system will need to define the platform device used by
Alessandro Zummoae64d162009-01-06 14:42:17 -0800429 this driver, otherwise it won't be accessible. This means
David Brownell7be2c7c2007-02-10 01:46:02 -0800430 you can safely enable this driver if you don't know whether
431 or not your board has this kind of hardware.
432
433 This driver can also be built as a module. If so, the module
434 will be called rtc-cmos.
435
Thomas Bogendoerfer537739d2007-07-17 04:05:06 -0700436config RTC_DRV_DS1216
437 tristate "Dallas DS1216"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700438 depends on SNI_RM
Thomas Bogendoerfer537739d2007-07-17 04:05:06 -0700439 help
440 If you say yes here you get support for the Dallas DS1216 RTC chips.
441
Thomas Bogendoerfer5f119f22008-10-14 17:16:59 +0200442config RTC_DRV_DS1286
443 tristate "Dallas DS1286"
444 help
445 If you say yes here you get support for the Dallas DS1286 RTC chips.
446
Paul Mundt739d3402008-02-06 01:38:44 -0800447config RTC_DRV_DS1302
448 tristate "Dallas DS1302"
449 depends on SH_SECUREEDGE5410
450 help
451 If you say yes here you get support for the Dallas DS1302 RTC chips.
452
Andrew Sharp8f267952008-02-06 01:38:46 -0800453config RTC_DRV_DS1511
454 tristate "Dallas DS1511"
455 depends on RTC_CLASS
456 help
457 If you say yes here you get support for the
458 Dallas DS1511 timekeeping/watchdog chip.
459
460 This driver can also be built as a module. If so, the module
461 will be called rtc-ds1511.
462
Atsushi Nemoto9bf5b4f2006-06-25 05:48:28 -0700463config RTC_DRV_DS1553
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -0800464 tristate "Maxim/Dallas DS1553"
Atsushi Nemoto9bf5b4f2006-06-25 05:48:28 -0700465 help
466 If you say yes here you get support for the
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -0800467 Maxim/Dallas DS1553 timekeeping chip.
Atsushi Nemoto9bf5b4f2006-06-25 05:48:28 -0700468
469 This driver can also be built as a module. If so, the module
470 will be called rtc-ds1553.
471
Alessandro Zummo09b6bdb3b2008-02-06 01:38:40 -0800472config RTC_DRV_DS1742
473 tristate "Maxim/Dallas DS1742/1743"
474 help
475 If you say yes here you get support for the
476 Maxim/Dallas DS1742/1743 timekeeping chip.
477
478 This driver can also be built as a module. If so, the module
479 will be called rtc-ds1742.
480
dann frazier5e3fd9e2009-03-31 15:24:48 -0700481config RTC_DRV_EFI
482 tristate "EFI RTC"
483 depends on IA64
484 help
485 If you say yes here you will get support for the EFI
486 Real Time Clock.
487
488 This driver can also be built as a module. If so, the module
489 will be called rtc-efi.
490
Thomas Hommel02964112007-07-21 04:37:58 -0700491config RTC_DRV_STK17TA8
492 tristate "Simtek STK17TA8"
493 depends on RTC_CLASS
494 help
495 If you say yes here you get support for the
496 Simtek STK17TA8 timekeeping chip.
497
498 This driver can also be built as a module. If so, the module
499 will be called rtc-stk17ta8.
500
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700501config RTC_DRV_M48T86
502 tristate "ST M48T86/Dallas DS12887"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700503 help
504 If you say Y here you will get support for the
505 ST M48T86 and Dallas DS12887 RTC chips.
506
507 This driver can also be built as a module. If so, the module
508 will be called rtc-m48t86.
509
Thomas Bogendoerferd1dbd822008-10-14 17:17:32 +0200510config RTC_DRV_M48T35
511 tristate "ST M48T35"
512 help
513 If you say Y here you will get support for the
514 ST M48T35 RTC chip.
515
516 This driver can also be built as a module, if so, the module
517 will be called "rtc-m48t35".
518
Mark Zhan2e774c72007-07-17 04:05:05 -0700519config RTC_DRV_M48T59
Krzysztof Helt94fe7422008-09-03 15:12:34 -0700520 tristate "ST M48T59/M48T08/M48T02"
Mark Zhan2e774c72007-07-17 04:05:05 -0700521 help
522 If you say Y here you will get support for the
Krzysztof Helt94fe7422008-09-03 15:12:34 -0700523 ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
524
525 These chips are usually found in Sun SPARC and UltraSPARC
526 workstations.
Mark Zhan2e774c72007-07-17 04:05:05 -0700527
528 This driver can also be built as a module, if so, the module
529 will be called "rtc-m48t59".
530
Geert Uytterhoeven4f9b9bb2009-03-18 23:29:27 +0100531config RTC_DRV_MSM6242
532 tristate "Oki MSM6242"
533 help
534 If you say yes here you get support for the Oki MSM6242
535 timekeeping chip. It is used in some Amiga models (e.g. A2000).
536
537 This driver can also be built as a module. If so, the module
538 will be called rtc-msm6242.
539
Daniel Mackd00ed3c2009-09-22 16:46:23 -0700540config RTC_MXC
541 tristate "Freescale MXC Real Time Clock"
542 depends on ARCH_MXC
543 depends on RTC_CLASS
544 help
545 If you say yes here you get support for the Freescale MXC
546 RTC module.
547
548 This driver can also be built as a module, if so, the module
549 will be called "rtc-mxc".
550
David S. Millercca4c232008-08-29 01:29:53 -0700551config RTC_DRV_BQ4802
552 tristate "TI BQ4802"
553 help
554 If you say Y here you will get support for the TI
555 BQ4802 RTC chip.
556
557 This driver can also be built as a module. If so, the module
558 will be called rtc-bq4802.
559
Geert Uytterhoeven4f672ce2009-03-18 23:29:27 +0100560config RTC_DRV_RP5C01
561 tristate "Ricoh RP5C01"
562 help
563 If you say yes here you get support for the Ricoh RP5C01
564 timekeeping chip. It is used in some Amiga models (e.g. A3000
565 and A4000).
566
567 This driver can also be built as a module. If so, the module
568 will be called rtc-rp5c01.
569
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700570config RTC_DRV_V3020
571 tristate "EM Microelectronic V3020"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700572 help
573 If you say yes here you will get support for the
574 EM Microelectronic v3020 RTC chip.
575
576 This driver can also be built as a module. If so, the module
577 will be called rtc-v3020.
578
Mark Brown35c86bf2009-08-27 19:59:05 +0200579config RTC_DRV_WM831X
580 tristate "Wolfson Microelectronics WM831x RTC"
581 depends on MFD_WM831X
582 help
583 If you say yes here you will get support for the RTC subsystem
584 of the Wolfson Microelectronics WM831X series PMICs.
585
586 This driver can also be built as a module. If so, the module
587 will be called "rtc-wm831x".
588
Mark Brown077eaf52008-11-12 13:27:04 -0800589config RTC_DRV_WM8350
590 tristate "Wolfson Microelectronics WM8350 RTC"
591 depends on MFD_WM8350
592 help
593 If you say yes here you will get support for the RTC subsystem
594 of the Wolfson Microelectronics WM8350.
595
596 This driver can also be built as a module. If so, the module
597 will be called "rtc-wm8350".
598
Balaji Raoeae854b2009-01-09 01:50:51 +0100599config RTC_DRV_PCF50633
600 depends on MFD_PCF50633
601 tristate "NXP PCF50633 RTC"
602 help
603 If you say yes here you get support for the RTC subsystem of the
604 NXP PCF50633 used in embedded systems.
605
Linus Walleijbd207cf2009-08-30 23:49:04 +0200606config RTC_DRV_AB3100
607 tristate "ST-Ericsson AB3100 RTC"
608 depends on AB3100_CORE
609 default y if AB3100_CORE
610 help
611 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
612 support. This chip contains a battery- and capacitor-backed RTC.
613
Wan ZongShunafd49a7e2009-12-15 16:46:17 -0800614config RTC_DRV_NUC900
615 tristate "NUC910/NUC920 RTC driver"
616 depends on RTC_CLASS && ARCH_W90X900
617 help
618 If you say yes here you get support for the RTC subsystem of the
619 NUC910/NUC920 used in embedded systems.
Linus Walleijbd207cf2009-08-30 23:49:04 +0200620
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700621comment "on-CPU RTC drivers"
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700622
David Brownelldb68b182006-12-06 20:38:36 -0800623config RTC_DRV_OMAP
624 tristate "TI OMAP1"
Mark A. Greer8cfde8c2009-12-15 16:46:11 -0800625 depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX
David Brownelldb68b182006-12-06 20:38:36 -0800626 help
Mark A. Greer8cfde8c2009-12-15 16:46:11 -0800627 Say "yes" here to support the real time clock on TI OMAP1 and
628 DA8xx/OMAP-L13x chips. This driver can also be built as a
629 module called rtc-omap.
David Brownelldb68b182006-12-06 20:38:36 -0800630
Ben Dooks1add6782006-07-01 04:36:26 -0700631config RTC_DRV_S3C
632 tristate "Samsung S3C series SoC RTC"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700633 depends on ARCH_S3C2410
Ben Dooks1add6782006-07-01 04:36:26 -0700634 help
635 RTC (Realtime Clock) driver for the clock inbuilt into the
636 Samsung S3C24XX series of SoCs. This can provide periodic
637 interrupt rates from 1Hz to 64Hz for user programs, and
638 wakeup from Alarm.
639
640 The driver currently supports the common features on all the
641 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
642 and S3C2442.
643
644 This driver can also be build as a module. If so, the module
645 will be called rtc-s3c.
646
Alessandro Zummofd507e22006-03-27 01:16:45 -0800647config RTC_DRV_EP93XX
648 tristate "Cirrus Logic EP93XX"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700649 depends on ARCH_EP93XX
Alessandro Zummofd507e22006-03-27 01:16:45 -0800650 help
651 If you say yes here you get support for the
652 RTC embedded in the Cirrus Logic EP93XX processors.
653
654 This driver can also be built as a module. If so, the module
655 will be called rtc-ep93xx.
656
Richard Purdiee842f1c2006-03-27 01:16:46 -0800657config RTC_DRV_SA1100
658 tristate "SA11x0/PXA2xx"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700659 depends on ARCH_SA1100 || ARCH_PXA
Richard Purdiee842f1c2006-03-27 01:16:46 -0800660 help
661 If you say Y here you will get access to the real time clock
662 built into your SA11x0 or PXA2xx CPU.
663
664 To compile this driver as a module, choose M here: the
665 module will be called rtc-sa1100.
Alessandro Zummofd507e22006-03-27 01:16:45 -0800666
Paul Mundt317a6102006-09-27 17:13:19 +0900667config RTC_DRV_SH
668 tristate "SuperH On-Chip RTC"
Paul Mundt063adc72009-04-16 14:12:22 +0900669 depends on RTC_CLASS && SUPERH && HAVE_CLK
Paul Mundt317a6102006-09-27 17:13:19 +0900670 help
671 Say Y here to enable support for the on-chip RTC found in
672 most SuperH processors.
673
674 To compile this driver as a module, choose M here: the
675 module will be called rtc-sh.
676
Yoichi Yuasa8417eb72006-04-10 22:54:47 -0700677config RTC_DRV_VR41XX
Alessandro Zummo3e16f6a2006-04-10 22:54:48 -0700678 tristate "NEC VR41XX"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700679 depends on CPU_VR41XX
Alessandro Zummo3e16f6a2006-04-10 22:54:48 -0700680 help
681 If you say Y here you will get access to the real time clock
682 built into your NEC VR41XX CPU.
683
684 To compile this driver as a module, choose M here: the
685 module will be called rtc-vr41xx.
Yoichi Yuasa8417eb72006-04-10 22:54:47 -0700686
Russell Kinga1909012008-04-20 12:08:36 +0100687config RTC_DRV_PL030
688 tristate "ARM AMBA PL030 RTC"
689 depends on ARM_AMBA
690 help
691 If you say Y here you will get access to ARM AMBA
692 PrimeCell PL030 RTC found on certain ARM SOCs.
693
694 To compile this driver as a module, choose M here: the
695 module will be called rtc-pl030.
696
Deepak Saxena8ae6e162006-06-25 05:47:38 -0700697config RTC_DRV_PL031
698 tristate "ARM AMBA PL031 RTC"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700699 depends on ARM_AMBA
Deepak Saxena8ae6e162006-06-25 05:47:38 -0700700 help
701 If you say Y here you will get access to ARM AMBA
Alessandro Zummo09a21e52007-05-08 00:33:48 -0700702 PrimeCell PL031 RTC found on certain ARM SOCs.
Deepak Saxena8ae6e162006-06-25 05:47:38 -0700703
704 To compile this driver as a module, choose M here: the
705 module will be called rtc-pl031.
706
Hans-Christian Egtvedtfa04e782007-07-17 04:05:00 -0700707config RTC_DRV_AT32AP700X
708 tristate "AT32AP700X series RTC"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700709 depends on PLATFORM_AT32AP
Hans-Christian Egtvedtfa04e782007-07-17 04:05:00 -0700710 help
711 Driver for the internal RTC (Realtime Clock) on Atmel AVR32
712 AT32AP700x family processors.
713
Andrew Victor7fc39f62006-12-10 02:19:03 -0800714config RTC_DRV_AT91RM9200
David Brownell4cdf8542008-02-06 01:38:59 -0800715 tristate "AT91RM9200 or AT91SAM9RL"
716 depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL
Andrew Victor788b1fc2006-06-25 05:48:27 -0700717 help
David Brownell4cdf8542008-02-06 01:38:59 -0800718 Driver for the internal RTC (Realtime Clock) module found on
Alessandro Zummoae64d162009-01-06 14:42:17 -0800719 Atmel AT91RM9200's and AT91SAM9RL chips. On SAM9RL chips
David Brownell4cdf8542008-02-06 01:38:59 -0800720 this is powered by the backup power supply.
721
722config RTC_DRV_AT91SAM9
Stelian Pop6b71dbf2008-04-05 21:16:15 +0100723 tristate "AT91SAM9x/AT91CAP9"
David Brownell4cdf8542008-02-06 01:38:59 -0800724 depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
725 help
Stelian Pop6b71dbf2008-04-05 21:16:15 +0100726 RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
727 (Real Time Timer). These timers are powered by the backup power
728 supply (such as a small coin cell battery), but do not need to
729 be used as RTCs.
David Brownell4cdf8542008-02-06 01:38:59 -0800730
731 (On AT91SAM9rl chips you probably want to use the dedicated RTC
732 module and leave the RTT available for other uses.)
733
734config RTC_DRV_AT91SAM9_RTT
735 int
736 range 0 1
737 default 0
738 prompt "RTT module Number" if ARCH_AT91SAM9263
739 depends on RTC_DRV_AT91SAM9
740 help
Alessandro Zummoae64d162009-01-06 14:42:17 -0800741 More than one RTT module is available. You can choose which
742 one will be used as an RTC. The default of zero is normally
David Brownell4cdf8542008-02-06 01:38:59 -0800743 OK to use, though some systems use that for non-RTC purposes.
744
745config RTC_DRV_AT91SAM9_GPBR
746 int
747 range 0 3 if !ARCH_AT91SAM9263
748 range 0 15 if ARCH_AT91SAM9263
749 default 0
750 prompt "Backup Register Number"
751 depends on RTC_DRV_AT91SAM9
752 help
753 The RTC driver needs to use one of the General Purpose Backup
Alessandro Zummoae64d162009-01-06 14:42:17 -0800754 Registers (GPBRs) as well as the RTT. You can choose which one
755 will be used. The default of zero is normally OK to use, but
David Brownell4cdf8542008-02-06 01:38:59 -0800756 on some systems other software needs to use that register.
Andrew Victor788b1fc2006-06-25 05:48:27 -0700757
Manuel Lauss45fd8a02009-01-06 14:42:18 -0800758config RTC_DRV_AU1XXX
759 tristate "Au1xxx Counter0 RTC support"
760 depends on SOC_AU1X00
761 help
762 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
763 counter) to be used as a RTC.
764
765 This driver can also be built as a module. If so, the module
766 will be called rtc-au1xxx.
767
Wu, Bryan8cc75c92007-05-06 14:50:32 -0700768config RTC_DRV_BFIN
769 tristate "Blackfin On-Chip RTC"
Graf Yang7f604592008-08-20 14:09:02 -0700770 depends on BLACKFIN && !BF561
Wu, Bryan8cc75c92007-05-06 14:50:32 -0700771 help
772 If you say yes here you will get support for the
773 Blackfin On-Chip Real Time Clock.
774
775 This driver can also be built as a module. If so, the module
776 will be called rtc-bfin.
777
Nobuhiro Iwamatsue9f2bd82007-05-08 00:26:37 -0700778config RTC_DRV_RS5C313
779 tristate "Ricoh RS5C313"
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700780 depends on SH_LANDISK
Nobuhiro Iwamatsue9f2bd82007-05-08 00:26:37 -0700781 help
782 If you say yes here you get support for the Ricoh RS5C313 RTC chips.
783
Geert Uytterhoeven3afe6d02009-02-19 16:46:49 +0100784config RTC_DRV_GENERIC
785 tristate "Generic RTC support"
786 # Please consider writing a new RTC driver instead of using the generic
787 # RTC abstraction
Paul Mundt47c8a082009-04-27 17:34:39 +0900788 depends on PARISC || M68K || PPC || SUPERH32
Kyle McMartin9eb16862008-09-10 14:24:07 +0000789 help
Geert Uytterhoeven3afe6d02009-02-19 16:46:49 +0100790 Say Y or M here to enable RTC support on systems using the generic
791 RTC abstraction. If you do not know what you are doing, you should
Kyle McMartin9eb16862008-09-10 14:24:07 +0000792 just say Y.
793
Robert Jarzmikdc944362009-01-06 14:42:14 -0800794config RTC_DRV_PXA
795 tristate "PXA27x/PXA3xx"
796 depends on ARCH_PXA
797 help
798 If you say Y here you will get access to the real time clock
799 built into your PXA27x or PXA3xx CPU.
800
801 This RTC driver uses PXA RTC registers available since pxa27x
802 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
803
804
David S. Miller7a138ed2008-08-29 01:32:43 -0700805config RTC_DRV_SUN4V
806 bool "SUN4V Hypervisor RTC"
807 depends on SPARC64
808 help
809 If you say Y here you will get support for the Hypervisor
810 based RTC on SUN4V systems.
811
David S. Millerde2cf332008-08-28 23:02:36 -0700812config RTC_DRV_STARFIRE
813 bool "Starfire RTC"
814 depends on SPARC64
815 help
816 If you say Y here you will get support for the RTC found on
817 Starfire systems.
818
Atsushi Nemoto0e149232009-01-06 14:42:22 -0800819config RTC_DRV_TX4939
820 tristate "TX4939 SoC"
821 depends on SOC_TX4939
822 help
823 Driver for the internal RTC (Realtime Clock) module found on
824 Toshiba TX4939 SoC.
825
Saeed Bisharadefb4512009-01-06 14:42:24 -0800826config RTC_DRV_MV
827 tristate "Marvell SoC RTC"
Saeed Bisharada432432009-11-24 19:33:53 +0200828 depends on ARCH_KIRKWOOD || ARCH_DOVE
Saeed Bisharadefb4512009-01-06 14:42:24 -0800829 help
830 If you say yes here you will get support for the in-chip RTC
831 that can be found in some of Marvell's SoC devices, such as
832 the Kirkwood 88F6281 and 88F6192.
833
834 This driver can also be built as a module. If so, the module
835 will be called rtc-mv.
836
Geert Uytterhoeven0b5f0372009-02-24 14:04:20 +0100837config RTC_DRV_PS3
838 tristate "PS3 RTC"
839 depends on PPC_PS3
840 help
841 If you say yes here you will get support for the RTC on PS3.
842
843 This driver can also be built as a module. If so, the module
844 will be called rtc-ps3.
845
Linus Walleijaa958f52009-09-22 16:46:24 -0700846config RTC_DRV_COH901331
847 tristate "ST-Ericsson COH 901 331 RTC"
848 depends on ARCH_U300
849 help
850 If you say Y here you will get access to ST-Ericsson
851 COH 901 331 RTC clock found in some ST-Ericsson Mobile
852 Platforms.
853
854 This driver can also be built as a module. If so, the module
855 will be called "rtc-coh901331".
856
857
dmitry pervushindf17f632009-09-22 16:46:26 -0700858config RTC_DRV_STMP
859 tristate "Freescale STMP3xxx RTC"
860 depends on ARCH_STMP3XXX
861 help
862 If you say yes here you will get support for the onboard
863 STMP3xxx RTC.
864
865 This driver can also be built as a module. If so, the module
866 will be called rtc-stmp3xxx.
867
Daniel Ribeirod3c7a3f2009-09-22 16:46:27 -0700868config RTC_DRV_PCAP
869 tristate "PCAP RTC"
870 depends on EZX_PCAP
871 help
872 If you say Y here you will get support for the RTC found on
873 the PCAP2 ASIC used on some Motorola phones.
874
Uwe Kleine-König43299f22009-12-15 16:46:09 -0800875config RTC_DRV_MC13783
876 depends on MFD_MC13783
877 tristate "Freescale MC13783 RTC"
878 help
879 This enables support for the Freescale MC13783 PMIC RTC
880
Anatolij Gustschin50aae722010-02-16 10:47:35 -0700881config RTC_DRV_MPC5121
882 tristate "Freescale MPC5121 built-in RTC"
883 depends on PPC_MPC512x && RTC_CLASS
884 help
885 If you say yes here you will get support for the
886 built-in RTC MPC5121.
887
888 This driver can also be built as a module. If so, the module
889 will be called rtc-mpc5121.
890
Jan Engelhardtbb35fb22007-07-31 00:39:46 -0700891endif # RTC_CLASS