drivers/rtc/Kconfig

   1 #
   2 # RTC class/drivers configuration
   3 #
   4
   5 config RTC_LIB
   6         tristate
   7
   8 menuconfig RTC_CLASS
   9         tristate "Real Time Clock"
  10         default n
  11         depends on !S390
  12         select RTC_LIB
  13         help
  14           Generic RTC class support. If you say yes here, you will
  15           be allowed to plug one or more RTCs to your system. You will
  16           probably want to enable one or more of the interfaces below.
  17
  18           This driver can also be built as a module. If so, the module
  19           will be called rtc-core.
  20
  21 if RTC_CLASS
  22
  23 config RTC_HCTOSYS
  24         bool "Set system time from RTC on startup and resume"
  25         depends on RTC_CLASS = y
  26         default y
  27         help
  28           If you say yes here, the system time (wall clock) will be set using
  29           the value read from a specified RTC device. This is useful to avoid
  30           unnecessary fsck runs at boot time, and to network better.
  31
  32 config RTC_HCTOSYS_DEVICE
  33         string "RTC used to set the system time"
  34         depends on RTC_HCTOSYS = y
  35         default "rtc0"
  36         help
  37           The RTC device that will be used to (re)initialize the system
  38           clock, usually rtc0. Initialization is done when the system
  39           starts up, and when it resumes from a low power state. This
  40           device should record time in UTC, since the kernel won't do
  41           timezone correction.
  42
  43           The driver for this RTC device must be loaded before late_initcall
  44           functions run, so it must usually be statically linked.
  45
  46           This clock should be battery-backed, so that it reads the correct
  47           time when the system boots from a power-off state. Otherwise, your
  48           system will need an external clock source (like an NTP server).
  49
  50           If the clock you specify here is not battery backed, it may still
  51           be useful to reinitialize system time when resuming from system
  52           sleep states. Do not specify an RTC here unless it stays powered
  53           during all this system's supported sleep states.
  54
  55 config 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
  62 comment "RTC interfaces"
  63
  64 config RTC_INTF_SYSFS
  65         boolean "/sys/class/rtc/rtcN (sysfs)"
  66         depends on SYSFS
  67         default RTC_CLASS
  68         help
  69           Say yes here if you want to use your RTCs using sysfs interfaces,
  70           /sys/class/rtc/rtc0 through /sys/.../rtcN.
  71
  72           If unsure, say Y.
  73
  74 config RTC_INTF_PROC
  75         boolean "/proc/driver/rtc (procfs for rtc0)"
  76         depends on PROC_FS
  77         default RTC_CLASS
  78         help
  79           Say yes here if you want to use your first RTC through the proc
  80           interface, /proc/driver/rtc. Other RTCs will not be available
  81           through that API.
  82
  83           If unsure, say Y.
  84
  85 config RTC_INTF_DEV
  86         boolean "/dev/rtcN (character devices)"
  87         default RTC_CLASS
  88         help
  89           Say yes here if you want to use your RTCs using the /dev
  90           interfaces, which "udev" sets up as /dev/rtc0 through
  91           /dev/rtcN.
  92
  93           You may want to set up a symbolic link so one of these
  94           can be accessed as /dev/rtc, which is a name
  95           expected by "hwclock" and some other programs. Recent
  96           versions of "udev" are known to set up the symlink for you.
  97
  98           If unsure, say Y.
  99
 100 config RTC_INTF_DEV_UIE_EMUL
 101         bool "RTC UIE emulation on dev interface"
 102         depends on RTC_INTF_DEV
 103         help
 104           Provides an emulation for RTC_UIE if the underlying rtc chip
 105           driver does not expose RTC_UIE ioctls. Those requests generate
 106           once-per-second update interrupts, used for synchronization.
 107
 108           The emulation code will read the time from the hardware
 109           clock several times per second, please enable this option
 110           only if you know that you really need it.
 111
 112 config RTC_DRV_TEST
 113         tristate "Test driver/device"
 114         help
 115           If you say yes here you get support for the
 116           RTC test driver. It's a software RTC which can be
 117           used to test the RTC subsystem APIs. It gets
 118           the time from the system clock.
 119           You want this driver only if you are doing development
 120           on the RTC subsystem. Please read the source code
 121           for further details.
 122
 123           This driver can also be built as a module. If so, the module
 124           will be called rtc-test.
 125
 126 comment "I2C RTC drivers"
 127         depends on I2C
 128
 129 if I2C
 130
 131 config RTC_DRV_DS1307
 132         tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
 133         help
 134           If you say yes here you get support for various compatible RTC
 135           chips (often with battery backup) connected with I2C. This driver
 136           should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
 137           EPSON RX-8025 and probably other chips. In some cases the RTC
 138           must already have been initialized (by manufacturing or a
 139           bootloader).
 140
 141           The first seven registers on these chips hold an RTC, and other
 142           registers may add features such as NVRAM, a trickle charger for
 143           the RTC/NVRAM backup power, and alarms. NVRAM is visible in
 144           sysfs, but other chip features may not be available.
 145
 146           This driver can also be built as a module. If so, the module
 147           will be called rtc-ds1307.
 148
 149 config RTC_DRV_DS1374
 150         tristate "Dallas/Maxim DS1374"
 151         depends on RTC_CLASS && I2C
 152         help
 153           If you say yes here you get support for Dallas Semiconductor
 154           DS1374 real-time clock chips. If an interrupt is associated
 155           with the device, the alarm functionality is supported.
 156
 157           This driver can also be built as a module. If so, the module
 158           will be called rtc-ds1374.
 159
 160 config RTC_DRV_DS1672
 161         tristate "Dallas/Maxim DS1672"
 162         help
 163           If you say yes here you get support for the
 164           Dallas/Maxim DS1672 timekeeping chip.
 165
 166           This driver can also be built as a module. If so, the module
 167           will be called rtc-ds1672.
 168
 169 config RTC_DRV_MAX6900
 170         tristate "Maxim MAX6900"
 171         help
 172           If you say yes here you will get support for the
 173           Maxim MAX6900 I2C RTC chip.
 174
 175           This driver can also be built as a module. If so, the module
 176           will be called rtc-max6900.
 177
 178 config 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
 188 config RTC_DRV_RS5C372
 189         tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
 190         help
 191           If you say yes here you get support for the
 192           Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
 193
 194           This driver can also be built as a module. If so, the module
 195           will be called rtc-rs5c372.
 196
 197 config RTC_DRV_ISL1208
 198         tristate "Intersil ISL1208"
 199         help
 200           If you say yes here you get support for the
 201           Intersil ISL1208 RTC chip.
 202
 203           This driver can also be built as a module. If so, the module
 204           will be called rtc-isl1208.
 205
 206 config RTC_DRV_X1205
 207         tristate "Xicor/Intersil X1205"
 208         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
 215 config RTC_DRV_PCF8563
 216         tristate "Philips PCF8563/Epson RTC8564"
 217         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
 225 config RTC_DRV_PCF8583
 226         tristate "Philips PCF8583"
 227         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
 237 config RTC_DRV_M41T80
 238         tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
 239         help
 240           If you say Y here you will get support for the ST M41T60
 241           and M41T80 RTC chips series. Currently, the following chips are
 242           supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
 243           M41ST85, and M41ST87.
 244
 245           This driver can also be built as a module. If so, the module
 246           will be called rtc-m41t80.
 247
 248 config RTC_DRV_M41T80_WDT
 249         bool "ST M41T65/M41T80 series RTC watchdog timer"
 250         depends on RTC_DRV_M41T80
 251         help
 252           If you say Y here you will get support for the
 253           watchdog timer in the ST M41T60 and M41T80 RTC chips series.
 254
 255 config 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
 264 config 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
 270 config RTC_DRV_TWL92330
 271         boolean "TI TWL92330/Menelaus"
 272         depends on MENELAUS
 273         help
 274           If you say yes here you get support for the RTC on the
 275           TWL92330 "Menelaus" power management chip, used with OMAP2
 276           platforms. The support is integrated with the rest of
 277           the Menelaus driver; it's not separate module.
 278
 279 config RTC_DRV_TWL4030
 280         tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
 281         depends on RTC_CLASS && TWL4030_CORE
 282         help
 283           If you say yes here you get support for the RTC on the
 284           TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
 285
 286           This driver can also be built as a module. If so, the module
 287           will be called rtc-twl.
 288
 289 config RTC_DRV_S35390A
 290         tristate "Seiko Instruments S-35390A"
 291         select BITREVERSE
 292         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
 299 config 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
 310 config 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
 318 config 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
 327 endif # I2C
 328
 329 comment "SPI RTC drivers"
 330
 331 if SPI_MASTER
 332
 333 config 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
 342 config RTC_DRV_DS1305
 343         tristate "Dallas/Maxim DS1305/DS1306"
 344         help
 345           Select this driver to get support for the Dallas/Maxim DS1305
 346           and DS1306 real time clock chips. These support a trickle
 347           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
 352 config RTC_DRV_DS1390
 353         tristate "Dallas/Maxim DS1390/93/94"
 354         help
 355           If you say yes here you get support for the
 356           Dallas/Maxim DS1390/93/94 chips.
 357
 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
 364 config 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
 373 config 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
 382 config RTC_DRV_RS5C348
 383         tristate "Ricoh RS5C348A/B"
 384         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
 391 config 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
 400 config 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
 409 endif # SPI_MASTER
 410
 411 comment "Platform RTC drivers"
 412
 413 # 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
 417 config RTC_DRV_CMOS
 418         tristate "PC-style 'CMOS'"
 419         depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
 420         default y if X86
 421         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
 429           this driver, otherwise it won't be accessible. This means
 430           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
 436 config RTC_DRV_DS1216
 437         tristate "Dallas DS1216"
 438         depends on SNI_RM
 439         help
 440           If you say yes here you get support for the Dallas DS1216 RTC chips.
 441
 442 config 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
 447 config 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
 453 config 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
 463 config RTC_DRV_DS1553
 464         tristate "Maxim/Dallas DS1553"
 465         help
 466           If you say yes here you get support for the
 467           Maxim/Dallas DS1553 timekeeping chip.
 468
 469           This driver can also be built as a module. If so, the module
 470           will be called rtc-ds1553.
 471
 472 config 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
 481 config 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
 491 config 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
 501 config RTC_DRV_M48T86
 502         tristate "ST M48T86/Dallas DS12887"
 503         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
 510 config 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
 519 config RTC_DRV_M48T59
 520         tristate "ST M48T59/M48T08/M48T02"
 521         help
 522           If you say Y here you will get support for the
 523           ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
 524
 525           These chips are usually found in Sun SPARC and UltraSPARC
 526           workstations.
 527
 528           This driver can also be built as a module, if so, the module
 529           will be called "rtc-m48t59".
 530
 531 config 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
 540 config 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
 551 config 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
 560 config 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
 570 config RTC_DRV_V3020
 571         tristate "EM Microelectronic V3020"
 572         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
 579 config 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
 589 config 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
 599 config 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
 606 config 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
 614 config 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.
 620
 621 comment "on-CPU RTC drivers"
 622
 623 config RTC_DRV_OMAP
 624         tristate "TI OMAP1"
 625         depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX
 626         help
 627           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.
 630
 631 config RTC_DRV_S3C
 632         tristate "Samsung S3C series SoC RTC"
 633         depends on ARCH_S3C2410
 634         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
 647 config RTC_DRV_EP93XX
 648         tristate "Cirrus Logic EP93XX"
 649         depends on ARCH_EP93XX
 650         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
 657 config RTC_DRV_SA1100
 658         tristate "SA11x0/PXA2xx"
 659         depends on ARCH_SA1100 || ARCH_PXA
 660         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.
 666
 667 config RTC_DRV_SH
 668         tristate "SuperH On-Chip RTC"
 669         depends on RTC_CLASS && SUPERH && HAVE_CLK
 670         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
 677 config RTC_DRV_VR41XX
 678         tristate "NEC VR41XX"
 679         depends on CPU_VR41XX
 680         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.
 686
 687 config 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
 697 config RTC_DRV_PL031
 698         tristate "ARM AMBA PL031 RTC"
 699         depends on ARM_AMBA
 700         help
 701           If you say Y here you will get access to ARM AMBA
 702           PrimeCell PL031 RTC found on certain ARM SOCs.
 703
 704           To compile this driver as a module, choose M here: the
 705           module will be called rtc-pl031.
 706
 707 config RTC_DRV_AT32AP700X
 708         tristate "AT32AP700X series RTC"
 709         depends on PLATFORM_AT32AP
 710         help
 711           Driver for the internal RTC (Realtime Clock) on Atmel AVR32
 712           AT32AP700x family processors.
 713
 714 config RTC_DRV_AT91RM9200
 715         tristate "AT91RM9200 or AT91SAM9RL"
 716         depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL
 717         help
 718           Driver for the internal RTC (Realtime Clock) module found on
 719           Atmel AT91RM9200's and AT91SAM9RL chips. On SAM9RL chips
 720           this is powered by the backup power supply.
 721
 722 config RTC_DRV_AT91SAM9
 723         tristate "AT91SAM9x/AT91CAP9"
 724         depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
 725         help
 726           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.
 730
 731           (On AT91SAM9rl chips you probably want to use the dedicated RTC
 732           module and leave the RTT available for other uses.)
 733
 734 config 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
 741           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
 743           OK to use, though some systems use that for non-RTC purposes.
 744
 745 config 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
 754           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
 756           on some systems other software needs to use that register.
 757
 758 config 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
 768 config RTC_DRV_BFIN
 769         tristate "Blackfin On-Chip RTC"
 770         depends on BLACKFIN && !BF561
 771         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
 778 config RTC_DRV_RS5C313
 779         tristate "Ricoh RS5C313"
 780         depends on SH_LANDISK
 781         help
 782           If you say yes here you get support for the Ricoh RS5C313 RTC chips.
 783
 784 config RTC_DRV_GENERIC
 785         tristate "Generic RTC support"
 786         # Please consider writing a new RTC driver instead of using the generic
 787         # RTC abstraction
 788         depends on PARISC || M68K || PPC || SUPERH32
 789         help
 790           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
 792           just say Y.
 793
 794 config 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
 805 config 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
 812 config 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
 819 config 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
 826 config RTC_DRV_MV
 827         tristate "Marvell SoC RTC"
 828         depends on ARCH_KIRKWOOD || ARCH_DOVE
 829         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
 837 config 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
 846 config 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
 858 config 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
 868 config 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
 875 config 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
 881 config 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
 891 endif # RTC_CLASS