1# 2# RTC class/drivers configuration 3# 4 5config RTC_LIB 6 tristate 7 8menuconfig RTC_CLASS 9 tristate "Real Time Clock" 10 default n 11 depends on !S390 12 select RTC_LIB 13 help 14 Generic RTC class support. If you say yes here, you will 15 be allowed to plug one or more RTCs to your system. You will 16 probably want to enable one or more of the interfaces below. 17 18 This driver can also be built as a module. If so, the module 19 will be called rtc-core. 20 21if RTC_CLASS 22 23config RTC_HCTOSYS 24 bool "Set system time from RTC on startup and resume" 25 depends on RTC_CLASS = y 26 default y 27 help 28 If you say yes here, the system time (wall clock) will be set using 29 the value read from a specified RTC device. This is useful to avoid 30 unnecessary fsck runs at boot time, and to network better. 31 32config RTC_HCTOSYS_DEVICE 33 string "RTC used to set the system time" 34 depends on RTC_HCTOSYS = y 35 default "rtc0" 36 help 37 The RTC device that will be used to (re)initialize the system 38 clock, usually rtc0. Initialization is done when the system 39 starts up, and when it resumes from a low power state. This 40 device should record time in UTC, since the kernel won't do 41 timezone correction. 42 43 The driver for this RTC device must be loaded before late_initcall 44 functions run, so it must usually be statically linked. 45 46 This clock should be battery-backed, so that it reads the correct 47 time when the system boots from a power-off state. Otherwise, your 48 system will need an external clock source (like an NTP server). 49 50 If the clock you specify here is not battery backed, it may still 51 be useful to reinitialize system time when resuming from system 52 sleep states. Do not specify an RTC here unless it stays powered 53 during all this system's supported sleep states. 54 55config RTC_DEBUG 56 bool "RTC debug support" 57 depends on RTC_CLASS = y 58 help 59 Say yes here to enable debugging support in the RTC framework 60 and individual RTC drivers. 61 62comment "RTC interfaces" 63 64config RTC_INTF_SYSFS 65 boolean "/sys/class/rtc/rtcN (sysfs)" 66 depends on SYSFS 67 default RTC_CLASS 68 help 69 Say yes here if you want to use your RTCs using sysfs interfaces, 70 /sys/class/rtc/rtc0 through /sys/.../rtcN. 71 72 If unsure, say Y. 73 74config RTC_INTF_PROC 75 boolean "/proc/driver/rtc (procfs for rtc0)" 76 depends on PROC_FS 77 default RTC_CLASS 78 help 79 Say yes here if you want to use your first RTC through the proc 80 interface, /proc/driver/rtc. Other RTCs will not be available 81 through that API. 82 83 If unsure, say Y. 84 85config RTC_INTF_DEV 86 boolean "/dev/rtcN (character devices)" 87 default RTC_CLASS 88 help 89 Say yes here if you want to use your RTCs using the /dev 90 interfaces, which "udev" sets up as /dev/rtc0 through 91 /dev/rtcN. 92 93 You may want to set up a symbolic link so one of these 94 can be accessed as /dev/rtc, which is a name 95 expected by "hwclock" and some other programs. Recent 96 versions of "udev" are known to set up the symlink for you. 97 98 If unsure, say Y. 99 100config RTC_INTF_DEV_UIE_EMUL 101 bool "RTC UIE emulation on dev interface" 102 depends on RTC_INTF_DEV 103 help 104 Provides an emulation for RTC_UIE if the underlying rtc chip 105 driver does not expose RTC_UIE ioctls. Those requests generate 106 once-per-second update interrupts, used for synchronization. 107 108 The emulation code will read the time from the hardware 109 clock several times per second, please enable this option 110 only if you know that you really need it. 111 112config RTC_DRV_TEST 113 tristate "Test driver/device" 114 help 115 If you say yes here you get support for the 116 RTC test driver. It's a software RTC which can be 117 used to test the RTC subsystem APIs. It gets 118 the time from the system clock. 119 You want this driver only if you are doing development 120 on the RTC subsystem. Please read the source code 121 for further details. 122 123 This driver can also be built as a module. If so, the module 124 will be called rtc-test. 125 126comment "I2C RTC drivers" 127 depends on I2C 128 129if I2C 130 131config RTC_DRV_DS1307 132 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025" 133 help 134 If you say yes here you get support for various compatible RTC 135 chips (often with battery backup) connected with I2C. This driver 136 should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00, 137 EPSON RX-8025 and probably other chips. In some cases the RTC 138 must already have been initialized (by manufacturing or a 139 bootloader). 140 141 The first seven registers on these chips hold an RTC, and other 142 registers may add features such as NVRAM, a trickle charger for 143 the RTC/NVRAM backup power, and alarms. NVRAM is visible in 144 sysfs, but other chip features may not be available. 145 146 This driver can also be built as a module. If so, the module 147 will be called rtc-ds1307. 148 149config RTC_DRV_DS1374 150 tristate "Dallas/Maxim DS1374" 151 depends on RTC_CLASS && I2C 152 help 153 If you say yes here you get support for Dallas Semiconductor 154 DS1374 real-time clock chips. If an interrupt is associated 155 with the device, the alarm functionality is supported. 156 157 This driver can also be built as a module. If so, the module 158 will be called rtc-ds1374. 159 160config RTC_DRV_DS1672 161 tristate "Dallas/Maxim DS1672" 162 help 163 If you say yes here you get support for the 164 Dallas/Maxim DS1672 timekeeping chip. 165 166 This driver can also be built as a module. If so, the module 167 will be called rtc-ds1672. 168 169config RTC_DRV_MAX6900 170 tristate "Maxim MAX6900" 171 help 172 If you say yes here you will get support for the 173 Maxim MAX6900 I2C RTC chip. 174 175 This driver can also be built as a module. If so, the module 176 will be called rtc-max6900. 177 178config RTC_DRV_RS5C372 179 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A" 180 help 181 If you say yes here you get support for the 182 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips. 183 184 This driver can also be built as a module. If so, the module 185 will be called rtc-rs5c372. 186 187config RTC_DRV_ISL1208 188 tristate "Intersil ISL1208" 189 help 190 If you say yes here you get support for the 191 Intersil ISL1208 RTC chip. 192 193 This driver can also be built as a module. If so, the module 194 will be called rtc-isl1208. 195 196config RTC_DRV_X1205 197 tristate "Xicor/Intersil X1205" 198 help 199 If you say yes here you get support for the 200 Xicor/Intersil X1205 RTC chip. 201 202 This driver can also be built as a module. If so, the module 203 will be called rtc-x1205. 204 205config RTC_DRV_PCF8563 206 tristate "Philips PCF8563/Epson RTC8564" 207 help 208 If you say yes here you get support for the 209 Philips PCF8563 RTC chip. The Epson RTC8564 210 should work as well. 211 212 This driver can also be built as a module. If so, the module 213 will be called rtc-pcf8563. 214 215config RTC_DRV_PCF8583 216 tristate "Philips PCF8583" 217 help 218 If you say yes here you get support for the Philips PCF8583 219 RTC chip found on Acorn RiscPCs. This driver supports the 220 platform specific method of retrieving the current year from 221 the RTC's SRAM. It will work on other platforms with the same 222 chip, but the year will probably have to be tweaked. 223 224 This driver can also be built as a module. If so, the module 225 will be called rtc-pcf8583. 226 227config RTC_DRV_M41T80 228 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87" 229 help 230 If you say Y here you will get support for the ST M41T60 231 and M41T80 RTC chips series. Currently, the following chips are 232 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84, 233 M41ST85, and M41ST87. 234 235 This driver can also be built as a module. If so, the module 236 will be called rtc-m41t80. 237 238config RTC_DRV_M41T80_WDT 239 bool "ST M41T65/M41T80 series RTC watchdog timer" 240 depends on RTC_DRV_M41T80 241 help 242 If you say Y here you will get support for the 243 watchdog timer in the ST M41T60 and M41T80 RTC chips series. 244 245config RTC_DRV_DM355EVM 246 tristate "TI DaVinci DM355 EVM RTC" 247 depends on MFD_DM355EVM_MSP 248 help 249 Supports the RTC firmware in the MSP430 on the DM355 EVM. 250 251config RTC_DRV_TWL92330 252 boolean "TI TWL92330/Menelaus" 253 depends on MENELAUS 254 help 255 If you say yes here you get support for the RTC on the 256 TWL92330 "Menelaus" power management chip, used with OMAP2 257 platforms. The support is integrated with the rest of 258 the Menelaus driver; it's not separate module. 259 260config RTC_DRV_TWL4030 261 tristate "TI TWL4030/TWL5030/TPS659x0" 262 depends on RTC_CLASS && TWL4030_CORE 263 help 264 If you say yes here you get support for the RTC on the 265 TWL4030 family chips, used mostly with OMAP3 platforms. 266 267 This driver can also be built as a module. If so, the module 268 will be called rtc-twl4030. 269 270config RTC_DRV_S35390A 271 tristate "Seiko Instruments S-35390A" 272 select BITREVERSE 273 help 274 If you say yes here you will get support for the Seiko 275 Instruments S-35390A. 276 277 This driver can also be built as a module. If so the module 278 will be called rtc-s35390a. 279 280config RTC_DRV_FM3130 281 tristate "Ramtron FM3130" 282 help 283 If you say Y here you will get support for the 284 Ramtron FM3130 RTC chips. 285 Ramtron FM3130 is a chip with two separate devices inside, 286 RTC clock and FRAM. This driver provides only RTC functionality. 287 288 This driver can also be built as a module. If so the module 289 will be called rtc-fm3130. 290 291config RTC_DRV_RX8581 292 tristate "Epson RX-8581" 293 help 294 If you say yes here you will get support for the Epson RX-8581. 295 296 This driver can also be built as a module. If so the module 297 will be called rtc-rx8581. 298 299config RTC_DRV_RX8025 300 tristate "Epson RX-8025SA/NB" 301 help 302 If you say yes here you get support for the Epson 303 RX-8025SA/NB RTC chips. 304 305 This driver can also be built as a module. If so, the module 306 will be called rtc-rx8025. 307 308endif # I2C 309 310comment "SPI RTC drivers" 311 312if SPI_MASTER 313 314config RTC_DRV_M41T94 315 tristate "ST M41T94" 316 help 317 If you say yes here you will get support for the 318 ST M41T94 SPI RTC chip. 319 320 This driver can also be built as a module. If so, the module 321 will be called rtc-m41t94. 322 323config RTC_DRV_DS1305 324 tristate "Dallas/Maxim DS1305/DS1306" 325 help 326 Select this driver to get support for the Dallas/Maxim DS1305 327 and DS1306 real time clock chips. These support a trickle 328 charger, alarms, and NVRAM in addition to the clock. 329 330 This driver can also be built as a module. If so, the module 331 will be called rtc-ds1305. 332 333config RTC_DRV_DS1390 334 tristate "Dallas/Maxim DS1390/93/94" 335 help 336 If you say yes here you get support for the 337 Dallas/Maxim DS1390/93/94 chips. 338 339 This driver only supports the RTC feature, and not other chip 340 features such as alarms and trickle charging. 341 342 This driver can also be built as a module. If so, the module 343 will be called rtc-ds1390. 344 345config RTC_DRV_MAX6902 346 tristate "Maxim MAX6902" 347 help 348 If you say yes here you will get support for the 349 Maxim MAX6902 SPI RTC chip. 350 351 This driver can also be built as a module. If so, the module 352 will be called rtc-max6902. 353 354config RTC_DRV_R9701 355 tristate "Epson RTC-9701JE" 356 help 357 If you say yes here you will get support for the 358 Epson RTC-9701JE SPI RTC chip. 359 360 This driver can also be built as a module. If so, the module 361 will be called rtc-r9701. 362 363config RTC_DRV_RS5C348 364 tristate "Ricoh RS5C348A/B" 365 help 366 If you say yes here you get support for the 367 Ricoh RS5C348A and RS5C348B RTC chips. 368 369 This driver can also be built as a module. If so, the module 370 will be called rtc-rs5c348. 371 372config RTC_DRV_DS3234 373 tristate "Maxim/Dallas DS3234" 374 help 375 If you say yes here you get support for the 376 Maxim/Dallas DS3234 SPI RTC chip. 377 378 This driver can also be built as a module. If so, the module 379 will be called rtc-ds3234. 380 381endif # SPI_MASTER 382 383comment "Platform RTC drivers" 384 385# this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h> 386# requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a 387# global rtc_lock ... it's not yet just another platform_device. 388 389config RTC_DRV_CMOS 390 tristate "PC-style 'CMOS'" 391 depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64 392 default y if X86 393 help 394 Say "yes" here to get direct support for the real time clock 395 found in every PC or ACPI-based system, and some other boards. 396 Specifically the original MC146818, compatibles like those in 397 PC south bridges, the DS12887 or M48T86, some multifunction 398 or LPC bus chips, and so on. 399 400 Your system will need to define the platform device used by 401 this driver, otherwise it won't be accessible. This means 402 you can safely enable this driver if you don't know whether 403 or not your board has this kind of hardware. 404 405 This driver can also be built as a module. If so, the module 406 will be called rtc-cmos. 407 408config RTC_DRV_DS1216 409 tristate "Dallas DS1216" 410 depends on SNI_RM 411 help 412 If you say yes here you get support for the Dallas DS1216 RTC chips. 413 414config RTC_DRV_DS1286 415 tristate "Dallas DS1286" 416 help 417 If you say yes here you get support for the Dallas DS1286 RTC chips. 418 419config RTC_DRV_DS1302 420 tristate "Dallas DS1302" 421 depends on SH_SECUREEDGE5410 422 help 423 If you say yes here you get support for the Dallas DS1302 RTC chips. 424 425config RTC_DRV_DS1511 426 tristate "Dallas DS1511" 427 depends on RTC_CLASS 428 help 429 If you say yes here you get support for the 430 Dallas DS1511 timekeeping/watchdog chip. 431 432 This driver can also be built as a module. If so, the module 433 will be called rtc-ds1511. 434 435config RTC_DRV_DS1553 436 tristate "Maxim/Dallas DS1553" 437 help 438 If you say yes here you get support for the 439 Maxim/Dallas DS1553 timekeeping chip. 440 441 This driver can also be built as a module. If so, the module 442 will be called rtc-ds1553. 443 444config RTC_DRV_DS1742 445 tristate "Maxim/Dallas DS1742/1743" 446 help 447 If you say yes here you get support for the 448 Maxim/Dallas DS1742/1743 timekeeping chip. 449 450 This driver can also be built as a module. If so, the module 451 will be called rtc-ds1742. 452 453config RTC_DRV_EFI 454 tristate "EFI RTC" 455 depends on IA64 456 help 457 If you say yes here you will get support for the EFI 458 Real Time Clock. 459 460 This driver can also be built as a module. If so, the module 461 will be called rtc-efi. 462 463config RTC_DRV_STK17TA8 464 tristate "Simtek STK17TA8" 465 depends on RTC_CLASS 466 help 467 If you say yes here you get support for the 468 Simtek STK17TA8 timekeeping chip. 469 470 This driver can also be built as a module. If so, the module 471 will be called rtc-stk17ta8. 472 473config RTC_DRV_M48T86 474 tristate "ST M48T86/Dallas DS12887" 475 help 476 If you say Y here you will get support for the 477 ST M48T86 and Dallas DS12887 RTC chips. 478 479 This driver can also be built as a module. If so, the module 480 will be called rtc-m48t86. 481 482config RTC_DRV_M48T35 483 tristate "ST M48T35" 484 help 485 If you say Y here you will get support for the 486 ST M48T35 RTC chip. 487 488 This driver can also be built as a module, if so, the module 489 will be called "rtc-m48t35". 490 491config RTC_DRV_M48T59 492 tristate "ST M48T59/M48T08/M48T02" 493 help 494 If you say Y here you will get support for the 495 ST M48T59 RTC chip and compatible ST M48T08 and M48T02. 496 497 These chips are usually found in Sun SPARC and UltraSPARC 498 workstations. 499 500 This driver can also be built as a module, if so, the module 501 will be called "rtc-m48t59". 502 503config RTC_DRV_BQ4802 504 tristate "TI BQ4802" 505 help 506 If you say Y here you will get support for the TI 507 BQ4802 RTC chip. 508 509 This driver can also be built as a module. If so, the module 510 will be called rtc-bq4802. 511 512config RTC_DRV_V3020 513 tristate "EM Microelectronic V3020" 514 help 515 If you say yes here you will get support for the 516 EM Microelectronic v3020 RTC chip. 517 518 This driver can also be built as a module. If so, the module 519 will be called rtc-v3020. 520 521config RTC_DRV_WM831X 522 tristate "Wolfson Microelectronics WM831x RTC" 523 depends on MFD_WM831X 524 help 525 If you say yes here you will get support for the RTC subsystem 526 of the Wolfson Microelectronics WM831X series PMICs. 527 528 This driver can also be built as a module. If so, the module 529 will be called "rtc-wm831x". 530 531config RTC_DRV_WM8350 532 tristate "Wolfson Microelectronics WM8350 RTC" 533 depends on MFD_WM8350 534 help 535 If you say yes here you will get support for the RTC subsystem 536 of the Wolfson Microelectronics WM8350. 537 538 This driver can also be built as a module. If so, the module 539 will be called "rtc-wm8350". 540 541config RTC_DRV_PCF50633 542 depends on MFD_PCF50633 543 tristate "NXP PCF50633 RTC" 544 help 545 If you say yes here you get support for the RTC subsystem of the 546 NXP PCF50633 used in embedded systems. 547 548config RTC_DRV_AB3100 549 tristate "ST-Ericsson AB3100 RTC" 550 depends on AB3100_CORE 551 default y if AB3100_CORE 552 help 553 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC 554 support. This chip contains a battery- and capacitor-backed RTC. 555 556 557comment "on-CPU RTC drivers" 558 559config RTC_DRV_OMAP 560 tristate "TI OMAP1" 561 depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 562 help 563 Say "yes" here to support the real time clock on TI OMAP1 chips. 564 This driver can also be built as a module called rtc-omap. 565 566config RTC_DRV_S3C 567 tristate "Samsung S3C series SoC RTC" 568 depends on ARCH_S3C2410 569 help 570 RTC (Realtime Clock) driver for the clock inbuilt into the 571 Samsung S3C24XX series of SoCs. This can provide periodic 572 interrupt rates from 1Hz to 64Hz for user programs, and 573 wakeup from Alarm. 574 575 The driver currently supports the common features on all the 576 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440 577 and S3C2442. 578 579 This driver can also be build as a module. If so, the module 580 will be called rtc-s3c. 581 582config RTC_DRV_EP93XX 583 tristate "Cirrus Logic EP93XX" 584 depends on ARCH_EP93XX 585 help 586 If you say yes here you get support for the 587 RTC embedded in the Cirrus Logic EP93XX processors. 588 589 This driver can also be built as a module. If so, the module 590 will be called rtc-ep93xx. 591 592config RTC_DRV_SA1100 593 tristate "SA11x0/PXA2xx" 594 depends on ARCH_SA1100 || ARCH_PXA 595 help 596 If you say Y here you will get access to the real time clock 597 built into your SA11x0 or PXA2xx CPU. 598 599 To compile this driver as a module, choose M here: the 600 module will be called rtc-sa1100. 601 602config RTC_DRV_SH 603 tristate "SuperH On-Chip RTC" 604 depends on RTC_CLASS && SUPERH && HAVE_CLK 605 help 606 Say Y here to enable support for the on-chip RTC found in 607 most SuperH processors. 608 609 To compile this driver as a module, choose M here: the 610 module will be called rtc-sh. 611 612config RTC_DRV_VR41XX 613 tristate "NEC VR41XX" 614 depends on CPU_VR41XX 615 help 616 If you say Y here you will get access to the real time clock 617 built into your NEC VR41XX CPU. 618 619 To compile this driver as a module, choose M here: the 620 module will be called rtc-vr41xx. 621 622config RTC_DRV_PL030 623 tristate "ARM AMBA PL030 RTC" 624 depends on ARM_AMBA 625 help 626 If you say Y here you will get access to ARM AMBA 627 PrimeCell PL030 RTC found on certain ARM SOCs. 628 629 To compile this driver as a module, choose M here: the 630 module will be called rtc-pl030. 631 632config RTC_DRV_PL031 633 tristate "ARM AMBA PL031 RTC" 634 depends on ARM_AMBA 635 help 636 If you say Y here you will get access to ARM AMBA 637 PrimeCell PL031 RTC found on certain ARM SOCs. 638 639 To compile this driver as a module, choose M here: the 640 module will be called rtc-pl031. 641 642config RTC_DRV_AT32AP700X 643 tristate "AT32AP700X series RTC" 644 depends on PLATFORM_AT32AP 645 help 646 Driver for the internal RTC (Realtime Clock) on Atmel AVR32 647 AT32AP700x family processors. 648 649config RTC_DRV_AT91RM9200 650 tristate "AT91RM9200 or AT91SAM9RL" 651 depends on ARCH_AT91RM9200 || ARCH_AT91SAM9RL 652 help 653 Driver for the internal RTC (Realtime Clock) module found on 654 Atmel AT91RM9200's and AT91SAM9RL chips. On SAM9RL chips 655 this is powered by the backup power supply. 656 657config RTC_DRV_AT91SAM9 658 tristate "AT91SAM9x/AT91CAP9" 659 depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40) 660 help 661 RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT 662 (Real Time Timer). These timers are powered by the backup power 663 supply (such as a small coin cell battery), but do not need to 664 be used as RTCs. 665 666 (On AT91SAM9rl chips you probably want to use the dedicated RTC 667 module and leave the RTT available for other uses.) 668 669config RTC_DRV_AT91SAM9_RTT 670 int 671 range 0 1 672 default 0 673 prompt "RTT module Number" if ARCH_AT91SAM9263 674 depends on RTC_DRV_AT91SAM9 675 help 676 More than one RTT module is available. You can choose which 677 one will be used as an RTC. The default of zero is normally 678 OK to use, though some systems use that for non-RTC purposes. 679 680config RTC_DRV_AT91SAM9_GPBR 681 int 682 range 0 3 if !ARCH_AT91SAM9263 683 range 0 15 if ARCH_AT91SAM9263 684 default 0 685 prompt "Backup Register Number" 686 depends on RTC_DRV_AT91SAM9 687 help 688 The RTC driver needs to use one of the General Purpose Backup 689 Registers (GPBRs) as well as the RTT. You can choose which one 690 will be used. The default of zero is normally OK to use, but 691 on some systems other software needs to use that register. 692 693config RTC_DRV_AU1XXX 694 tristate "Au1xxx Counter0 RTC support" 695 depends on SOC_AU1X00 696 help 697 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year 698 counter) to be used as a RTC. 699 700 This driver can also be built as a module. If so, the module 701 will be called rtc-au1xxx. 702 703config RTC_DRV_BFIN 704 tristate "Blackfin On-Chip RTC" 705 depends on BLACKFIN && !BF561 706 help 707 If you say yes here you will get support for the 708 Blackfin On-Chip Real Time Clock. 709 710 This driver can also be built as a module. If so, the module 711 will be called rtc-bfin. 712 713config RTC_DRV_RS5C313 714 tristate "Ricoh RS5C313" 715 depends on SH_LANDISK 716 help 717 If you say yes here you get support for the Ricoh RS5C313 RTC chips. 718 719config RTC_DRV_GENERIC 720 tristate "Generic RTC support" 721 # Please consider writing a new RTC driver instead of using the generic 722 # RTC abstraction 723 depends on PARISC || M68K || PPC || SUPERH32 724 help 725 Say Y or M here to enable RTC support on systems using the generic 726 RTC abstraction. If you do not know what you are doing, you should 727 just say Y. 728 729config RTC_DRV_PXA 730 tristate "PXA27x/PXA3xx" 731 depends on ARCH_PXA 732 help 733 If you say Y here you will get access to the real time clock 734 built into your PXA27x or PXA3xx CPU. 735 736 This RTC driver uses PXA RTC registers available since pxa27x 737 series (RDxR, RYxR) instead of legacy RCNR, RTAR. 738 739 740config RTC_DRV_SUN4V 741 bool "SUN4V Hypervisor RTC" 742 depends on SPARC64 743 help 744 If you say Y here you will get support for the Hypervisor 745 based RTC on SUN4V systems. 746 747config RTC_DRV_STARFIRE 748 bool "Starfire RTC" 749 depends on SPARC64 750 help 751 If you say Y here you will get support for the RTC found on 752 Starfire systems. 753 754config RTC_DRV_TX4939 755 tristate "TX4939 SoC" 756 depends on SOC_TX4939 757 help 758 Driver for the internal RTC (Realtime Clock) module found on 759 Toshiba TX4939 SoC. 760 761config RTC_DRV_MV 762 tristate "Marvell SoC RTC" 763 depends on ARCH_KIRKWOOD 764 help 765 If you say yes here you will get support for the in-chip RTC 766 that can be found in some of Marvell's SoC devices, such as 767 the Kirkwood 88F6281 and 88F6192. 768 769 This driver can also be built as a module. If so, the module 770 will be called rtc-mv. 771 772config RTC_DRV_PS3 773 tristate "PS3 RTC" 774 depends on PPC_PS3 775 help 776 If you say yes here you will get support for the RTC on PS3. 777 778 This driver can also be built as a module. If so, the module 779 will be called rtc-ps3. 780 781endif # RTC_CLASS 782