1# SPDX-License-Identifier: GPL-2.0-only 2# 3# RTC class/drivers configuration 4# 5 6config RTC_LIB 7 bool 8 9config RTC_MC146818_LIB 10 bool 11 select RTC_LIB 12 13menuconfig RTC_CLASS 14 bool "Real Time Clock" 15 default n 16 depends on !S390 && !UML 17 select RTC_LIB 18 help 19 Generic RTC class support. If you say yes here, you will 20 be allowed to plug one or more RTCs to your system. You will 21 probably want to enable one or more of the interfaces below. 22 23if RTC_CLASS 24 25config RTC_HCTOSYS 26 bool "Set system time from RTC on startup and resume" 27 default y 28 help 29 If you say yes here, the system time (wall clock) will be set using 30 the value read from a specified RTC device. This is useful to avoid 31 unnecessary fsck runs at boot time, and to network better. 32 33config RTC_HCTOSYS_DEVICE 34 string "RTC used to set the system time" 35 depends on RTC_HCTOSYS 36 default "rtc0" 37 help 38 The RTC device that will be used to (re)initialize the system 39 clock, usually rtc0. Initialization is done when the system 40 starts up, and when it resumes from a low power state. This 41 device should record time in UTC, since the kernel won't do 42 timezone correction. 43 44 The driver for this RTC device must be loaded before late_initcall 45 functions run, so it must usually be statically linked. 46 47 This clock should be battery-backed, so that it reads the correct 48 time when the system boots from a power-off state. Otherwise, your 49 system will need an external clock source (like an NTP server). 50 51 If the clock you specify here is not battery backed, it may still 52 be useful to reinitialize system time when resuming from system 53 sleep states. Do not specify an RTC here unless it stays powered 54 during all this system's supported sleep states. 55 56config RTC_SYSTOHC 57 bool "Set the RTC time based on NTP synchronization" 58 default y 59 help 60 If you say yes here, the system time (wall clock) will be stored 61 in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11 62 minutes if userspace reports synchronized NTP status. 63 64config RTC_SYSTOHC_DEVICE 65 string "RTC used to synchronize NTP adjustment" 66 depends on RTC_SYSTOHC 67 default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS 68 default "rtc0" 69 help 70 The RTC device used for NTP synchronization. The main difference 71 between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this 72 one can sleep when setting time, because it runs in the workqueue 73 context. 74 75config RTC_DEBUG 76 bool "RTC debug support" 77 help 78 Say yes here to enable debugging support in the RTC framework 79 and individual RTC drivers. 80 81config RTC_NVMEM 82 bool "RTC non volatile storage support" 83 select NVMEM 84 default RTC_CLASS 85 help 86 Say yes here to add support for the non volatile (often battery 87 backed) storage present on RTCs. 88 89comment "RTC interfaces" 90 91config RTC_INTF_SYSFS 92 bool "/sys/class/rtc/rtcN (sysfs)" 93 depends on SYSFS 94 default RTC_CLASS 95 help 96 Say yes here if you want to use your RTCs using sysfs interfaces, 97 /sys/class/rtc/rtc0 through /sys/.../rtcN. 98 99 If unsure, say Y. 100 101config RTC_INTF_PROC 102 bool "/proc/driver/rtc (procfs for rtcN)" 103 depends on PROC_FS 104 default RTC_CLASS 105 help 106 Say yes here if you want to use your system clock RTC through 107 the proc interface, /proc/driver/rtc. 108 Other RTCs will not be available through that API. 109 If there is no RTC for the system clock, then the first RTC(rtc0) 110 is used by default. 111 112 If unsure, say Y. 113 114config RTC_INTF_DEV 115 bool "/dev/rtcN (character devices)" 116 default RTC_CLASS 117 help 118 Say yes here if you want to use your RTCs using the /dev 119 interfaces, which "udev" sets up as /dev/rtc0 through 120 /dev/rtcN. 121 122 You may want to set up a symbolic link so one of these 123 can be accessed as /dev/rtc, which is a name 124 expected by "hwclock" and some other programs. Recent 125 versions of "udev" are known to set up the symlink for you. 126 127 If unsure, say Y. 128 129config RTC_INTF_DEV_UIE_EMUL 130 bool "RTC UIE emulation on dev interface" 131 depends on RTC_INTF_DEV 132 help 133 Provides an emulation for RTC_UIE if the underlying rtc chip 134 driver does not expose RTC_UIE ioctls. Those requests generate 135 once-per-second update interrupts, used for synchronization. 136 137 The emulation code will read the time from the hardware 138 clock several times per second, please enable this option 139 only if you know that you really need it. 140 141config RTC_DRV_TEST 142 tristate "Test driver/device" 143 help 144 If you say yes here you get support for the 145 RTC test driver. It's a software RTC which can be 146 used to test the RTC subsystem APIs. It gets 147 the time from the system clock. 148 You want this driver only if you are doing development 149 on the RTC subsystem. Please read the source code 150 for further details. 151 152 This driver can also be built as a module. If so, the module 153 will be called rtc-test. 154 155comment "I2C RTC drivers" 156 157if I2C 158 159config RTC_DRV_88PM860X 160 tristate "Marvell 88PM860x" 161 depends on MFD_88PM860X 162 help 163 If you say yes here you get support for RTC function in Marvell 164 88PM860x chips. 165 166 This driver can also be built as a module. If so, the module 167 will be called rtc-88pm860x. 168 169config RTC_DRV_88PM80X 170 tristate "Marvell 88PM80x" 171 depends on MFD_88PM800 172 help 173 If you say yes here you get support for RTC function in Marvell 174 88PM80x chips. 175 176 This driver can also be built as a module. If so, the module 177 will be called rtc-88pm80x. 178 179config RTC_DRV_ABB5ZES3 180 select REGMAP_I2C 181 tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3" 182 help 183 If you say yes here you get support for the Abracon 184 AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip. 185 186 This driver can also be built as a module. If so, the module 187 will be called rtc-ab-b5ze-s3. 188 189config RTC_DRV_ABEOZ9 190 select REGMAP_I2C 191 tristate "Abracon AB-RTCMC-32.768kHz-EOZ9" 192 help 193 If you say yes here you get support for the Abracon 194 AB-RTCMC-32.768kHz-EOA9 I2C RTC chip. 195 196 This driver can also be built as a module. If so, the module 197 will be called rtc-ab-e0z9. 198 199config RTC_DRV_ABX80X 200 tristate "Abracon ABx80x" 201 select WATCHDOG_CORE if WATCHDOG 202 help 203 If you say yes here you get support for Abracon AB080X and AB180X 204 families of ultra-low-power battery- and capacitor-backed real-time 205 clock chips. 206 207 This driver can also be built as a module. If so, the module 208 will be called rtc-abx80x. 209 210config RTC_DRV_AC100 211 tristate "X-Powers AC100" 212 depends on MFD_AC100 213 help 214 If you say yes here you get support for the real-time clock found 215 in X-Powers AC100 family peripheral ICs. 216 217 This driver can also be built as a module. If so, the module 218 will be called rtc-ac100. 219 220config RTC_DRV_BRCMSTB 221 tristate "Broadcom STB wake-timer" 222 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST 223 default ARCH_BRCMSTB || BMIPS_GENERIC 224 help 225 If you say yes here you get support for the wake-timer found on 226 Broadcom STB SoCs (BCM7xxx). 227 228 This driver can also be built as a module. If so, the module will 229 be called rtc-brcmstb-waketimer. 230 231config RTC_DRV_AS3722 232 tristate "ams AS3722 RTC driver" 233 depends on MFD_AS3722 234 help 235 If you say yes here you get support for the RTC of ams AS3722 PMIC 236 chips. 237 238 This driver can also be built as a module. If so, the module 239 will be called rtc-as3722. 240 241config RTC_DRV_DS1307 242 tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057" 243 help 244 If you say yes here you get support for various compatible RTC 245 chips (often with battery backup) connected with I2C. This driver 246 should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341, 247 ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips. 248 In some cases the RTC must already have been initialized (by 249 manufacturing or a bootloader). 250 251 The first seven registers on these chips hold an RTC, and other 252 registers may add features such as NVRAM, a trickle charger for 253 the RTC/NVRAM backup power, and alarms. NVRAM is visible in 254 sysfs, but other chip features may not be available. 255 256 This driver can also be built as a module. If so, the module 257 will be called rtc-ds1307. 258 259config RTC_DRV_DS1307_CENTURY 260 bool "Century bit support for rtc-ds1307" 261 depends on RTC_DRV_DS1307 262 default n 263 help 264 The DS1307 driver suffered from a bug where it was enabling the 265 century bit inconditionnally but never used it when reading the time. 266 It made the driver unable to support dates beyond 2099. 267 Setting this option will add proper support for the century bit but if 268 the time was previously set using a kernel predating this option, 269 reading the date will return a date in the next century. 270 To solve that, you could boot a kernel without this option set, set 271 the RTC date and then boot a kernel with this option set. 272 273config RTC_DRV_DS1374 274 tristate "Dallas/Maxim DS1374" 275 help 276 If you say yes here you get support for Dallas Semiconductor 277 DS1374 real-time clock chips. If an interrupt is associated 278 with the device, the alarm functionality is supported. 279 280 This driver can also be built as a module. If so, the module 281 will be called rtc-ds1374. 282 283config RTC_DRV_DS1374_WDT 284 bool "Dallas/Maxim DS1374 watchdog timer" 285 depends on RTC_DRV_DS1374 286 help 287 If you say Y here you will get support for the 288 watchdog timer in the Dallas Semiconductor DS1374 289 real-time clock chips. 290 291config RTC_DRV_DS1672 292 tristate "Dallas/Maxim DS1672" 293 help 294 If you say yes here you get support for the 295 Dallas/Maxim DS1672 timekeeping chip. 296 297 This driver can also be built as a module. If so, the module 298 will be called rtc-ds1672. 299 300config RTC_DRV_HYM8563 301 tristate "Haoyu Microelectronics HYM8563" 302 depends on OF 303 help 304 Say Y to enable support for the HYM8563 I2C RTC chip. Apart 305 from the usual rtc functions it provides a clock output of 306 up to 32kHz. 307 308 This driver can also be built as a module. If so, the module 309 will be called rtc-hym8563. 310 311config RTC_DRV_LP8788 312 tristate "TI LP8788 RTC driver" 313 depends on MFD_LP8788 314 help 315 Say Y to enable support for the LP8788 RTC/ALARM driver. 316 317config RTC_DRV_MAX6900 318 tristate "Maxim MAX6900" 319 help 320 If you say yes here you will get support for the 321 Maxim MAX6900 I2C RTC chip. 322 323 This driver can also be built as a module. If so, the module 324 will be called rtc-max6900. 325 326config RTC_DRV_MAX8907 327 tristate "Maxim MAX8907" 328 depends on MFD_MAX8907 || COMPILE_TEST 329 help 330 If you say yes here you will get support for the 331 RTC of Maxim MAX8907 PMIC. 332 333 This driver can also be built as a module. If so, the module 334 will be called rtc-max8907. 335 336config RTC_DRV_MAX8925 337 tristate "Maxim MAX8925" 338 depends on MFD_MAX8925 339 help 340 If you say yes here you will get support for the 341 RTC of Maxim MAX8925 PMIC. 342 343 This driver can also be built as a module. If so, the module 344 will be called rtc-max8925. 345 346config RTC_DRV_MAX8998 347 tristate "Maxim MAX8998" 348 depends on MFD_MAX8998 349 help 350 If you say yes here you will get support for the 351 RTC of Maxim MAX8998 PMIC. 352 353 This driver can also be built as a module. If so, the module 354 will be called rtc-max8998. 355 356config RTC_DRV_MAX8997 357 tristate "Maxim MAX8997" 358 depends on MFD_MAX8997 359 help 360 If you say yes here you will get support for the 361 RTC of Maxim MAX8997 PMIC. 362 363 This driver can also be built as a module. If so, the module 364 will be called rtc-max8997. 365 366config RTC_DRV_MAX77686 367 tristate "Maxim MAX77686" 368 depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST 369 help 370 If you say yes here you will get support for the 371 RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC. 372 373 This driver can also be built as a module. If so, the module 374 will be called rtc-max77686. 375 376config RTC_DRV_RK808 377 tristate "Rockchip RK805/RK808/RK818 RTC" 378 depends on MFD_RK808 379 help 380 If you say yes here you will get support for the 381 RTC of RK805, RK808 and RK818 PMIC. 382 383 This driver can also be built as a module. If so, the module 384 will be called rk808-rtc. 385 386config RTC_DRV_RS5C372 387 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A" 388 help 389 If you say yes here you get support for the 390 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips. 391 392 This driver can also be built as a module. If so, the module 393 will be called rtc-rs5c372. 394 395config RTC_DRV_ISL1208 396 tristate "Intersil ISL1208" 397 help 398 If you say yes here you get support for the 399 Intersil ISL1208 RTC chip. 400 401 This driver can also be built as a module. If so, the module 402 will be called rtc-isl1208. 403 404config RTC_DRV_ISL12022 405 tristate "Intersil ISL12022" 406 help 407 If you say yes here you get support for the 408 Intersil ISL12022 RTC chip. 409 410 This driver can also be built as a module. If so, the module 411 will be called rtc-isl12022. 412 413config RTC_DRV_ISL12026 414 tristate "Intersil ISL12026" 415 depends on OF || COMPILE_TEST 416 help 417 If you say yes here you get support for the 418 Intersil ISL12026 RTC chip. 419 420 This driver can also be built as a module. If so, the module 421 will be called rtc-isl12026. 422 423config RTC_DRV_X1205 424 tristate "Xicor/Intersil X1205" 425 help 426 If you say yes here you get support for the 427 Xicor/Intersil X1205 RTC chip. 428 429 This driver can also be built as a module. If so, the module 430 will be called rtc-x1205. 431 432config RTC_DRV_PCF8523 433 tristate "NXP PCF8523" 434 help 435 If you say yes here you get support for the NXP PCF8523 RTC 436 chips. 437 438 This driver can also be built as a module. If so, the module 439 will be called rtc-pcf8523. 440 441config RTC_DRV_PCF85063 442 tristate "NXP PCF85063" 443 select REGMAP_I2C 444 help 445 If you say yes here you get support for the PCF85063 RTC chip 446 447 This driver can also be built as a module. If so, the module 448 will be called rtc-pcf85063. 449 450config RTC_DRV_PCF85363 451 tristate "NXP PCF85363" 452 select REGMAP_I2C 453 help 454 If you say yes here you get support for the PCF85363 RTC chip. 455 456 This driver can also be built as a module. If so, the module 457 will be called rtc-pcf85363. 458 459 The nvmem interface will be named pcf85363-#, where # is the 460 zero-based instance number. 461 462config RTC_DRV_PCF8563 463 tristate "Philips PCF8563/Epson RTC8564" 464 help 465 If you say yes here you get support for the 466 Philips PCF8563 RTC chip. The Epson RTC8564 467 should work as well. 468 469 This driver can also be built as a module. If so, the module 470 will be called rtc-pcf8563. 471 472config RTC_DRV_PCF8583 473 tristate "Philips PCF8583" 474 help 475 If you say yes here you get support for the Philips PCF8583 476 RTC chip found on Acorn RiscPCs. This driver supports the 477 platform specific method of retrieving the current year from 478 the RTC's SRAM. It will work on other platforms with the same 479 chip, but the year will probably have to be tweaked. 480 481 This driver can also be built as a module. If so, the module 482 will be called rtc-pcf8583. 483 484config RTC_DRV_M41T80 485 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible" 486 help 487 If you say Y here you will get support for the ST M41T60 488 and M41T80 RTC chips series. Currently, the following chips are 489 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84, 490 M41ST85, M41ST87, and MicroCrystal RV4162. 491 492 This driver can also be built as a module. If so, the module 493 will be called rtc-m41t80. 494 495config RTC_DRV_M41T80_WDT 496 bool "ST M41T65/M41T80 series RTC watchdog timer" 497 depends on RTC_DRV_M41T80 498 help 499 If you say Y here you will get support for the 500 watchdog timer in the ST M41T60 and M41T80 RTC chips series. 501 502config RTC_DRV_BQ32K 503 tristate "TI BQ32000" 504 help 505 If you say Y here you will get support for the TI 506 BQ32000 I2C RTC chip. 507 508 This driver can also be built as a module. If so, the module 509 will be called rtc-bq32k. 510 511config RTC_DRV_DM355EVM 512 tristate "TI DaVinci DM355 EVM RTC" 513 depends on MFD_DM355EVM_MSP 514 help 515 Supports the RTC firmware in the MSP430 on the DM355 EVM. 516 517config RTC_DRV_TWL92330 518 bool "TI TWL92330/Menelaus" 519 depends on MENELAUS 520 help 521 If you say yes here you get support for the RTC on the 522 TWL92330 "Menelaus" power management chip, used with OMAP2 523 platforms. The support is integrated with the rest of 524 the Menelaus driver; it's not separate module. 525 526config RTC_DRV_TWL4030 527 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0" 528 depends on TWL4030_CORE 529 depends on OF 530 help 531 If you say yes here you get support for the RTC on the 532 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms. 533 534 This driver can also be built as a module. If so, the module 535 will be called rtc-twl. 536 537config RTC_DRV_PALMAS 538 tristate "TI Palmas RTC driver" 539 depends on MFD_PALMAS 540 help 541 If you say yes here you get support for the RTC of TI PALMA series PMIC 542 chips. 543 544 This driver can also be built as a module. If so, the module 545 will be called rtc-palma. 546 547config RTC_DRV_TPS6586X 548 tristate "TI TPS6586X RTC driver" 549 depends on MFD_TPS6586X 550 help 551 TI Power Management IC TPS6586X supports RTC functionality 552 along with alarm. This driver supports the RTC driver for 553 the TPS6586X RTC module. 554 555config RTC_DRV_TPS65910 556 tristate "TI TPS65910 RTC driver" 557 depends on RTC_CLASS && MFD_TPS65910 558 help 559 If you say yes here you get support for the RTC on the 560 TPS65910 chips. 561 562 This driver can also be built as a module. If so, the module 563 will be called rtc-tps65910. 564 565config RTC_DRV_TPS80031 566 tristate "TI TPS80031/TPS80032 RTC driver" 567 depends on MFD_TPS80031 568 help 569 TI Power Management IC TPS80031 supports RTC functionality 570 along with alarm. This driver supports the RTC driver for 571 the TPS80031 RTC module. 572 573config RTC_DRV_RC5T583 574 tristate "RICOH 5T583 RTC driver" 575 depends on MFD_RC5T583 576 help 577 If you say yes here you get support for the RTC on the 578 RICOH 5T583 chips. 579 580 This driver can also be built as a module. If so, the module 581 will be called rtc-rc5t583. 582 583config RTC_DRV_S35390A 584 tristate "Seiko Instruments S-35390A" 585 select BITREVERSE 586 help 587 If you say yes here you will get support for the Seiko 588 Instruments S-35390A. 589 590 This driver can also be built as a module. If so the module 591 will be called rtc-s35390a. 592 593config RTC_DRV_FM3130 594 tristate "Ramtron FM3130" 595 help 596 If you say Y here you will get support for the 597 Ramtron FM3130 RTC chips. 598 Ramtron FM3130 is a chip with two separate devices inside, 599 RTC clock and FRAM. This driver provides only RTC functionality. 600 601 This driver can also be built as a module. If so the module 602 will be called rtc-fm3130. 603 604config RTC_DRV_RX8010 605 tristate "Epson RX8010SJ" 606 help 607 If you say yes here you get support for the Epson RX8010SJ RTC 608 chip. 609 610 This driver can also be built as a module. If so, the module 611 will be called rtc-rx8010. 612 613config RTC_DRV_RX8581 614 tristate "Epson RX-8571/RX-8581" 615 help 616 If you say yes here you will get support for the Epson RX-8571/ 617 RX-8581. 618 619 This driver can also be built as a module. If so the module 620 will be called rtc-rx8581. 621 622config RTC_DRV_RX8025 623 tristate "Epson RX-8025SA/NB" 624 help 625 If you say yes here you get support for the Epson 626 RX-8025SA/NB RTC chips. 627 628 This driver can also be built as a module. If so, the module 629 will be called rtc-rx8025. 630 631config RTC_DRV_EM3027 632 tristate "EM Microelectronic EM3027" 633 help 634 If you say yes here you get support for the EM 635 Microelectronic EM3027 RTC chips. 636 637 This driver can also be built as a module. If so, the module 638 will be called rtc-em3027. 639 640config RTC_DRV_RV3028 641 tristate "Micro Crystal RV3028" 642 help 643 If you say yes here you get support for the Micro Crystal 644 RV3028. 645 646 This driver can also be built as a module. If so, the module 647 will be called rtc-rv3028. 648 649config RTC_DRV_RV8803 650 tristate "Micro Crystal RV8803, Epson RX8900" 651 help 652 If you say yes here you get support for the Micro Crystal RV8803 and 653 Epson RX8900 RTC chips. 654 655 This driver can also be built as a module. If so, the module 656 will be called rtc-rv8803. 657 658config RTC_DRV_S5M 659 tristate "Samsung S2M/S5M series" 660 depends on MFD_SEC_CORE || COMPILE_TEST 661 select REGMAP_IRQ 662 help 663 If you say yes here you will get support for the 664 RTC of Samsung S2MPS14 and S5M PMIC series. 665 666 This driver can also be built as a module. If so, the module 667 will be called rtc-s5m. 668 669config RTC_DRV_SD3078 670 tristate "ZXW Shenzhen whwave SD3078" 671 help 672 If you say yes here you get support for the ZXW Shenzhen whwave 673 SD3078 RTC chips. 674 675 This driver can also be built as a module. If so, the module 676 will be called rtc-sd3078 677 678endif # I2C 679 680comment "SPI RTC drivers" 681 682if SPI_MASTER 683 684config RTC_DRV_M41T93 685 tristate "ST M41T93" 686 help 687 If you say yes here you will get support for the 688 ST M41T93 SPI RTC chip. 689 690 This driver can also be built as a module. If so, the module 691 will be called rtc-m41t93. 692 693config RTC_DRV_M41T94 694 tristate "ST M41T94" 695 help 696 If you say yes here you will get support for the 697 ST M41T94 SPI RTC chip. 698 699 This driver can also be built as a module. If so, the module 700 will be called rtc-m41t94. 701 702config RTC_DRV_DS1302 703 tristate "Dallas/Maxim DS1302" 704 depends on SPI 705 help 706 If you say yes here you get support for the Dallas DS1302 RTC chips. 707 708 This driver can also be built as a module. If so, the module 709 will be called rtc-ds1302. 710 711config RTC_DRV_DS1305 712 tristate "Dallas/Maxim DS1305/DS1306" 713 help 714 Select this driver to get support for the Dallas/Maxim DS1305 715 and DS1306 real time clock chips. These support a trickle 716 charger, alarms, and NVRAM in addition to the clock. 717 718 This driver can also be built as a module. If so, the module 719 will be called rtc-ds1305. 720 721config RTC_DRV_DS1343 722 select REGMAP_SPI 723 tristate "Dallas/Maxim DS1343/DS1344" 724 help 725 If you say yes here you get support for the 726 Dallas/Maxim DS1343 and DS1344 real time clock chips. 727 Support for trickle charger, alarm is provided. 728 729 This driver can also be built as a module. If so, the module 730 will be called rtc-ds1343. 731 732config RTC_DRV_DS1347 733 select REGMAP_SPI 734 tristate "Dallas/Maxim DS1347" 735 help 736 If you say yes here you get support for the 737 Dallas/Maxim DS1347 chips. 738 739 This driver only supports the RTC feature, and not other chip 740 features such as alarms. 741 742 This driver can also be built as a module. If so, the module 743 will be called rtc-ds1347. 744 745config RTC_DRV_DS1390 746 tristate "Dallas/Maxim DS1390/93/94" 747 help 748 If you say yes here you get support for the 749 Dallas/Maxim DS1390/93/94 chips. 750 751 This driver supports the RTC feature and trickle charging but not 752 other chip features such as alarms. 753 754 This driver can also be built as a module. If so, the module 755 will be called rtc-ds1390. 756 757config RTC_DRV_MAX6916 758 tristate "Maxim MAX6916" 759 help 760 If you say yes here you will get support for the 761 Maxim MAX6916 SPI RTC chip. 762 763 This driver only supports the RTC feature, and not other chip 764 features such as alarms. 765 766 This driver can also be built as a module. If so, the module 767 will be called rtc-max6916. 768 769config RTC_DRV_R9701 770 tristate "Epson RTC-9701JE" 771 help 772 If you say yes here you will get support for the 773 Epson RTC-9701JE SPI RTC chip. 774 775 This driver can also be built as a module. If so, the module 776 will be called rtc-r9701. 777 778config RTC_DRV_RX4581 779 tristate "Epson RX-4581" 780 help 781 If you say yes here you will get support for the Epson RX-4581. 782 783 This driver can also be built as a module. If so the module 784 will be called rtc-rx4581. 785 786config RTC_DRV_RX6110 787 tristate "Epson RX-6110" 788 select REGMAP_SPI 789 help 790 If you say yes here you will get support for the Epson RX-6610. 791 792 This driver can also be built as a module. If so the module 793 will be called rtc-rx6110. 794 795config RTC_DRV_RS5C348 796 tristate "Ricoh RS5C348A/B" 797 help 798 If you say yes here you get support for the 799 Ricoh RS5C348A and RS5C348B RTC chips. 800 801 This driver can also be built as a module. If so, the module 802 will be called rtc-rs5c348. 803 804config RTC_DRV_MAX6902 805 tristate "Maxim MAX6902" 806 help 807 If you say yes here you will get support for the 808 Maxim MAX6902 SPI RTC chip. 809 810 This driver can also be built as a module. If so, the module 811 will be called rtc-max6902. 812 813config RTC_DRV_PCF2123 814 tristate "NXP PCF2123" 815 help 816 If you say yes here you get support for the NXP PCF2123 817 RTC chip. 818 819 This driver can also be built as a module. If so, the module 820 will be called rtc-pcf2123. 821 822config RTC_DRV_MCP795 823 tristate "Microchip MCP795" 824 help 825 If you say yes here you will get support for the Microchip MCP795. 826 827 This driver can also be built as a module. If so the module 828 will be called rtc-mcp795. 829 830endif # SPI_MASTER 831 832# 833# Helper to resolve issues with configs that have SPI enabled but I2C 834# modular. See SND_SOC_I2C_AND_SPI for more information 835# 836config RTC_I2C_AND_SPI 837 tristate 838 default m if I2C=m 839 default y if I2C=y 840 default y if SPI_MASTER=y 841 select REGMAP_I2C if I2C 842 select REGMAP_SPI if SPI_MASTER 843 844comment "SPI and I2C RTC drivers" 845 846config RTC_DRV_DS3232 847 tristate "Dallas/Maxim DS3232/DS3234" 848 depends on RTC_I2C_AND_SPI 849 help 850 If you say yes here you get support for Dallas Semiconductor 851 DS3232 and DS3234 real-time clock chips. If an interrupt is associated 852 with the device, the alarm functionality is supported. 853 854 This driver can also be built as a module. If so, the module 855 will be called rtc-ds3232. 856 857config RTC_DRV_DS3232_HWMON 858 bool "HWMON support for Dallas/Maxim DS3232/DS3234" 859 depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m) 860 default y 861 help 862 Say Y here if you want to expose temperature sensor data on 863 rtc-ds3232 864 865config RTC_DRV_PCF2127 866 tristate "NXP PCF2127" 867 depends on RTC_I2C_AND_SPI 868 help 869 If you say yes here you get support for the NXP PCF2127/29 RTC 870 chips. 871 872 This driver can also be built as a module. If so, the module 873 will be called rtc-pcf2127. 874 875config RTC_DRV_RV3029C2 876 tristate "Micro Crystal RV3029/3049" 877 depends on RTC_I2C_AND_SPI 878 help 879 If you say yes here you get support for the Micro Crystal 880 RV3029 and RV3049 RTC chips. 881 882 This driver can also be built as a module. If so, the module 883 will be called rtc-rv3029c2. 884 885config RTC_DRV_RV3029_HWMON 886 bool "HWMON support for RV3029/3049" 887 depends on RTC_DRV_RV3029C2 && HWMON 888 depends on !(RTC_DRV_RV3029C2=y && HWMON=m) 889 default y 890 help 891 Say Y here if you want to expose temperature sensor data on 892 rtc-rv3029. 893 894comment "Platform RTC drivers" 895 896# this 'CMOS' RTC driver is arch dependent because it requires 897# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a 898# global rtc_lock ... it's not yet just another platform_device. 899 900config RTC_DRV_CMOS 901 tristate "PC-style 'CMOS'" 902 depends on X86 || ARM || PPC || MIPS || SPARC64 903 default y if X86 904 select RTC_MC146818_LIB 905 help 906 Say "yes" here to get direct support for the real time clock 907 found in every PC or ACPI-based system, and some other boards. 908 Specifically the original MC146818, compatibles like those in 909 PC south bridges, the DS12887 or M48T86, some multifunction 910 or LPC bus chips, and so on. 911 912 Your system will need to define the platform device used by 913 this driver, otherwise it won't be accessible. This means 914 you can safely enable this driver if you don't know whether 915 or not your board has this kind of hardware. 916 917 This driver can also be built as a module. If so, the module 918 will be called rtc-cmos. 919 920config RTC_DRV_ALPHA 921 bool "Alpha PC-style CMOS" 922 depends on ALPHA 923 select RTC_MC146818_LIB 924 default y 925 help 926 Direct support for the real-time clock found on every Alpha 927 system, specifically MC146818 compatibles. If in doubt, say Y. 928 929config RTC_DRV_VRTC 930 tristate "Virtual RTC for Intel MID platforms" 931 depends on X86_INTEL_MID 932 default y if X86_INTEL_MID 933 934 help 935 Say "yes" here to get direct support for the real time clock 936 found on Moorestown platforms. The VRTC is a emulated RTC that 937 derives its clock source from a real RTC in the PMIC. The MC146818 938 style programming interface is mostly conserved, but any 939 updates are done via IPC calls to the system controller FW. 940 941config RTC_DRV_DS1216 942 tristate "Dallas DS1216" 943 depends on SNI_RM 944 help 945 If you say yes here you get support for the Dallas DS1216 RTC chips. 946 947config RTC_DRV_DS1286 948 tristate "Dallas DS1286" 949 depends on HAS_IOMEM 950 help 951 If you say yes here you get support for the Dallas DS1286 RTC chips. 952 953config RTC_DRV_DS1511 954 tristate "Dallas DS1511" 955 depends on HAS_IOMEM 956 help 957 If you say yes here you get support for the 958 Dallas DS1511 timekeeping/watchdog chip. 959 960 This driver can also be built as a module. If so, the module 961 will be called rtc-ds1511. 962 963config RTC_DRV_DS1553 964 tristate "Maxim/Dallas DS1553" 965 depends on HAS_IOMEM 966 help 967 If you say yes here you get support for the 968 Maxim/Dallas DS1553 timekeeping chip. 969 970 This driver can also be built as a module. If so, the module 971 will be called rtc-ds1553. 972 973config RTC_DRV_DS1685_FAMILY 974 tristate "Dallas/Maxim DS1685 Family" 975 help 976 If you say yes here you get support for the Dallas/Maxim DS1685 977 family of real time chips. This family includes the DS1685/DS1687, 978 DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and 979 DS17885/DS17887 chips. 980 981 This driver can also be built as a module. If so, the module 982 will be called rtc-ds1685. 983 984choice 985 prompt "Subtype" 986 depends on RTC_DRV_DS1685_FAMILY 987 default RTC_DRV_DS1685 988 989config RTC_DRV_DS1685 990 bool "DS1685/DS1687" 991 help 992 This enables support for the Dallas/Maxim DS1685/DS1687 real time 993 clock chip. 994 995 This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30) 996 systems, as well as EPPC-405-UC modules by electronic system design 997 GmbH. 998 999config RTC_DRV_DS1689 1000 bool "DS1689/DS1693" 1001 help 1002 This enables support for the Dallas/Maxim DS1689/DS1693 real time 1003 clock chip. 1004 1005 This is an older RTC chip, supplanted by the DS1685/DS1687 above, 1006 which supports a few minor features such as Vcc, Vbat, and Power 1007 Cycle counters, plus a customer-specific, 8-byte ROM/Serial number. 1008 1009 It also works for the even older DS1688/DS1691 RTC chips, which are 1010 virtually the same and carry the same model number. Both chips 1011 have 114 bytes of user NVRAM. 1012 1013config RTC_DRV_DS17285 1014 bool "DS17285/DS17287" 1015 help 1016 This enables support for the Dallas/Maxim DS17285/DS17287 real time 1017 clock chip. 1018 1019 This chip features 2kb of extended NV-SRAM. It may possibly be 1020 found in some SGI O2 systems (rare). 1021 1022config RTC_DRV_DS17485 1023 bool "DS17485/DS17487" 1024 help 1025 This enables support for the Dallas/Maxim DS17485/DS17487 real time 1026 clock chip. 1027 1028 This chip features 4kb of extended NV-SRAM. 1029 1030config RTC_DRV_DS17885 1031 bool "DS17885/DS17887" 1032 help 1033 This enables support for the Dallas/Maxim DS17885/DS17887 real time 1034 clock chip. 1035 1036 This chip features 8kb of extended NV-SRAM. 1037 1038endchoice 1039 1040config RTC_DRV_DS1742 1041 tristate "Maxim/Dallas DS1742/1743" 1042 depends on HAS_IOMEM 1043 help 1044 If you say yes here you get support for the 1045 Maxim/Dallas DS1742/1743 timekeeping chip. 1046 1047 This driver can also be built as a module. If so, the module 1048 will be called rtc-ds1742. 1049 1050config RTC_DRV_DS2404 1051 tristate "Maxim/Dallas DS2404" 1052 help 1053 If you say yes here you get support for the 1054 Dallas DS2404 RTC chip. 1055 1056 This driver can also be built as a module. If so, the module 1057 will be called rtc-ds2404. 1058 1059config RTC_DRV_DA9052 1060 tristate "Dialog DA9052/DA9053 RTC" 1061 depends on PMIC_DA9052 1062 help 1063 Say y here to support the RTC driver for Dialog Semiconductor 1064 DA9052-BC and DA9053-AA/Bx PMICs. 1065 1066config RTC_DRV_DA9055 1067 tristate "Dialog Semiconductor DA9055 RTC" 1068 depends on MFD_DA9055 1069 help 1070 If you say yes here you will get support for the 1071 RTC of the Dialog DA9055 PMIC. 1072 1073 This driver can also be built as a module. If so, the module 1074 will be called rtc-da9055 1075 1076config RTC_DRV_DA9063 1077 tristate "Dialog Semiconductor DA9063/DA9062 RTC" 1078 depends on MFD_DA9063 || MFD_DA9062 1079 help 1080 If you say yes here you will get support for the RTC subsystem 1081 for the Dialog Semiconductor PMIC chips DA9063 and DA9062. 1082 1083 This driver can also be built as a module. If so, the module 1084 will be called "rtc-da9063". 1085 1086config RTC_DRV_EFI 1087 tristate "EFI RTC" 1088 depends on EFI && !X86 1089 help 1090 If you say yes here you will get support for the EFI 1091 Real Time Clock. 1092 1093 This driver can also be built as a module. If so, the module 1094 will be called rtc-efi. 1095 1096config RTC_DRV_STK17TA8 1097 tristate "Simtek STK17TA8" 1098 depends on HAS_IOMEM 1099 help 1100 If you say yes here you get support for the 1101 Simtek STK17TA8 timekeeping chip. 1102 1103 This driver can also be built as a module. If so, the module 1104 will be called rtc-stk17ta8. 1105 1106config RTC_DRV_M48T86 1107 tristate "ST M48T86/Dallas DS12887" 1108 help 1109 If you say Y here you will get support for the 1110 ST M48T86 and Dallas DS12887 RTC chips. 1111 1112 This driver can also be built as a module. If so, the module 1113 will be called rtc-m48t86. 1114 1115config RTC_DRV_M48T35 1116 tristate "ST M48T35" 1117 depends on HAS_IOMEM 1118 help 1119 If you say Y here you will get support for the 1120 ST M48T35 RTC chip. 1121 1122 This driver can also be built as a module, if so, the module 1123 will be called "rtc-m48t35". 1124 1125config RTC_DRV_M48T59 1126 tristate "ST M48T59/M48T08/M48T02" 1127 depends on HAS_IOMEM 1128 help 1129 If you say Y here you will get support for the 1130 ST M48T59 RTC chip and compatible ST M48T08 and M48T02. 1131 1132 These chips are usually found in Sun SPARC and UltraSPARC 1133 workstations. 1134 1135 This driver can also be built as a module, if so, the module 1136 will be called "rtc-m48t59". 1137 1138config RTC_DRV_MSM6242 1139 tristate "Oki MSM6242" 1140 depends on HAS_IOMEM 1141 help 1142 If you say yes here you get support for the Oki MSM6242 1143 timekeeping chip. It is used in some Amiga models (e.g. A2000). 1144 1145 This driver can also be built as a module. If so, the module 1146 will be called rtc-msm6242. 1147 1148config RTC_DRV_BQ4802 1149 tristate "TI BQ4802" 1150 depends on HAS_IOMEM 1151 help 1152 If you say Y here you will get support for the TI 1153 BQ4802 RTC chip. 1154 1155 This driver can also be built as a module. If so, the module 1156 will be called rtc-bq4802. 1157 1158config RTC_DRV_RP5C01 1159 tristate "Ricoh RP5C01" 1160 depends on HAS_IOMEM 1161 help 1162 If you say yes here you get support for the Ricoh RP5C01 1163 timekeeping chip. It is used in some Amiga models (e.g. A3000 1164 and A4000). 1165 1166 This driver can also be built as a module. If so, the module 1167 will be called rtc-rp5c01. 1168 1169config RTC_DRV_V3020 1170 tristate "EM Microelectronic V3020" 1171 help 1172 If you say yes here you will get support for the 1173 EM Microelectronic v3020 RTC chip. 1174 1175 This driver can also be built as a module. If so, the module 1176 will be called rtc-v3020. 1177 1178config RTC_DRV_WM831X 1179 tristate "Wolfson Microelectronics WM831x RTC" 1180 depends on MFD_WM831X 1181 help 1182 If you say yes here you will get support for the RTC subsystem 1183 of the Wolfson Microelectronics WM831X series PMICs. 1184 1185 This driver can also be built as a module. If so, the module 1186 will be called "rtc-wm831x". 1187 1188config RTC_DRV_WM8350 1189 tristate "Wolfson Microelectronics WM8350 RTC" 1190 depends on MFD_WM8350 1191 help 1192 If you say yes here you will get support for the RTC subsystem 1193 of the Wolfson Microelectronics WM8350. 1194 1195 This driver can also be built as a module. If so, the module 1196 will be called "rtc-wm8350". 1197 1198config RTC_DRV_SC27XX 1199 tristate "Spreadtrum SC27xx RTC" 1200 depends on MFD_SC27XX_PMIC || COMPILE_TEST 1201 help 1202 If you say Y here you will get support for the RTC subsystem 1203 of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs 1204 includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips. 1205 1206 This driver can also be built as a module. If so, the module 1207 will be called rtc-sc27xx. 1208 1209config RTC_DRV_SPEAR 1210 tristate "SPEAR ST RTC" 1211 depends on PLAT_SPEAR || COMPILE_TEST 1212 default y 1213 help 1214 If you say Y here you will get support for the RTC found on 1215 spear 1216 1217config RTC_DRV_PCF50633 1218 depends on MFD_PCF50633 1219 tristate "NXP PCF50633 RTC" 1220 help 1221 If you say yes here you get support for the RTC subsystem of the 1222 NXP PCF50633 used in embedded systems. 1223 1224config RTC_DRV_AB3100 1225 tristate "ST-Ericsson AB3100 RTC" 1226 depends on AB3100_CORE 1227 default y if AB3100_CORE 1228 help 1229 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC 1230 support. This chip contains a battery- and capacitor-backed RTC. 1231 1232config RTC_DRV_AB8500 1233 tristate "ST-Ericsson AB8500 RTC" 1234 depends on AB8500_CORE 1235 select RTC_INTF_DEV 1236 select RTC_INTF_DEV_UIE_EMUL 1237 help 1238 Select this to enable the ST-Ericsson AB8500 power management IC RTC 1239 support. This chip contains a battery- and capacitor-backed RTC. 1240 1241config RTC_DRV_NUC900 1242 tristate "NUC910/NUC920 RTC driver" 1243 depends on ARCH_W90X900 || COMPILE_TEST 1244 help 1245 If you say yes here you get support for the RTC subsystem of the 1246 NUC910/NUC920 used in embedded systems. 1247 1248config RTC_DRV_OPAL 1249 tristate "IBM OPAL RTC driver" 1250 depends on PPC_POWERNV 1251 default y 1252 help 1253 If you say yes here you get support for the PowerNV platform RTC 1254 driver based on OPAL interfaces. 1255 1256 This driver can also be built as a module. If so, the module 1257 will be called rtc-opal. 1258 1259config RTC_DRV_ZYNQMP 1260 tristate "Xilinx Zynq Ultrascale+ MPSoC RTC" 1261 depends on OF 1262 help 1263 If you say yes here you get support for the RTC controller found on 1264 Xilinx Zynq Ultrascale+ MPSoC. 1265 1266config RTC_DRV_CROS_EC 1267 tristate "Chrome OS EC RTC driver" 1268 depends on MFD_CROS_EC 1269 help 1270 If you say yes here you will get support for the 1271 Chrome OS Embedded Controller's RTC. 1272 1273 This driver can also be built as a module. If so, the module 1274 will be called rtc-cros-ec. 1275 1276comment "on-CPU RTC drivers" 1277 1278config RTC_DRV_ASM9260 1279 tristate "Alphascale asm9260 RTC" 1280 depends on MACH_ASM9260 || COMPILE_TEST 1281 help 1282 If you say yes here you get support for the RTC on the 1283 Alphascale asm9260 SoC. 1284 1285 This driver can also be built as a module. If so, the module 1286 will be called rtc-asm9260. 1287 1288config RTC_DRV_DAVINCI 1289 tristate "TI DaVinci RTC" 1290 depends on ARCH_DAVINCI_DM365 || COMPILE_TEST 1291 help 1292 If you say yes here you get support for the RTC on the 1293 DaVinci platforms (DM365). 1294 1295 This driver can also be built as a module. If so, the module 1296 will be called rtc-davinci. 1297 1298config RTC_DRV_DIGICOLOR 1299 tristate "Conexant Digicolor RTC" 1300 depends on ARCH_DIGICOLOR || COMPILE_TEST 1301 help 1302 If you say yes here you get support for the RTC on Conexant 1303 Digicolor platforms. This currently includes the CX92755 SoC. 1304 1305 This driver can also be built as a module. If so, the module 1306 will be called rtc-digicolor. 1307 1308config RTC_DRV_IMXDI 1309 tristate "Freescale IMX DryIce Real Time Clock" 1310 depends on ARCH_MXC 1311 help 1312 Support for Freescale IMX DryIce RTC 1313 1314 This driver can also be built as a module, if so, the module 1315 will be called "rtc-imxdi". 1316 1317config RTC_DRV_MESON 1318 tristate "Amlogic Meson RTC" 1319 depends on (ARM && ARCH_MESON) || COMPILE_TEST 1320 select REGMAP_MMIO 1321 help 1322 Support for the RTC block on the Amlogic Meson6, Meson8, Meson8b 1323 and Meson8m2 SoCs. 1324 1325 This driver can also be built as a module, if so, the module 1326 will be called "rtc-meson". 1327 1328config RTC_DRV_OMAP 1329 tristate "TI OMAP Real Time Clock" 1330 depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST 1331 depends on OF 1332 depends on PINCTRL 1333 select GENERIC_PINCONF 1334 help 1335 Say "yes" here to support the on chip real time clock 1336 present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx. 1337 1338 This driver can also be built as a module, if so, module 1339 will be called rtc-omap. 1340 1341config HAVE_S3C_RTC 1342 bool 1343 help 1344 This will include RTC support for Samsung SoCs. If 1345 you want to include RTC support for any machine, kindly 1346 select this in the respective mach-XXXX/Kconfig file. 1347 1348config RTC_DRV_S3C 1349 tristate "Samsung S3C series SoC RTC" 1350 depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST 1351 help 1352 RTC (Realtime Clock) driver for the clock inbuilt into the 1353 Samsung S3C24XX series of SoCs. This can provide periodic 1354 interrupt rates from 1Hz to 64Hz for user programs, and 1355 wakeup from Alarm. 1356 1357 The driver currently supports the common features on all the 1358 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440 1359 and S3C2442. 1360 1361 This driver can also be build as a module. If so, the module 1362 will be called rtc-s3c. 1363 1364config RTC_DRV_EP93XX 1365 tristate "Cirrus Logic EP93XX" 1366 depends on ARCH_EP93XX || COMPILE_TEST 1367 help 1368 If you say yes here you get support for the 1369 RTC embedded in the Cirrus Logic EP93XX processors. 1370 1371 This driver can also be built as a module. If so, the module 1372 will be called rtc-ep93xx. 1373 1374config RTC_DRV_SA1100 1375 tristate "SA11x0/PXA2xx/PXA910" 1376 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP 1377 help 1378 If you say Y here you will get access to the real time clock 1379 built into your SA11x0 or PXA2xx CPU. 1380 1381 To compile this driver as a module, choose M here: the 1382 module will be called rtc-sa1100. 1383 1384config RTC_DRV_SH 1385 tristate "SuperH On-Chip RTC" 1386 depends on SUPERH || ARCH_RENESAS 1387 help 1388 Say Y here to enable support for the on-chip RTC found in 1389 most SuperH processors. This RTC is also found in RZ/A SoCs. 1390 1391 To compile this driver as a module, choose M here: the 1392 module will be called rtc-sh. 1393 1394config RTC_DRV_VR41XX 1395 tristate "NEC VR41XX" 1396 depends on CPU_VR41XX || COMPILE_TEST 1397 help 1398 If you say Y here you will get access to the real time clock 1399 built into your NEC VR41XX CPU. 1400 1401 To compile this driver as a module, choose M here: the 1402 module will be called rtc-vr41xx. 1403 1404config RTC_DRV_PL030 1405 tristate "ARM AMBA PL030 RTC" 1406 depends on ARM_AMBA 1407 help 1408 If you say Y here you will get access to ARM AMBA 1409 PrimeCell PL030 RTC found on certain ARM SOCs. 1410 1411 To compile this driver as a module, choose M here: the 1412 module will be called rtc-pl030. 1413 1414config RTC_DRV_PL031 1415 tristate "ARM AMBA PL031 RTC" 1416 depends on ARM_AMBA 1417 help 1418 If you say Y here you will get access to ARM AMBA 1419 PrimeCell PL031 RTC found on certain ARM SOCs. 1420 1421 To compile this driver as a module, choose M here: the 1422 module will be called rtc-pl031. 1423 1424config RTC_DRV_AT91RM9200 1425 tristate "AT91RM9200 or some AT91SAM9 RTC" 1426 depends on ARCH_AT91 || COMPILE_TEST 1427 help 1428 Driver for the internal RTC (Realtime Clock) module found on 1429 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips 1430 this is powered by the backup power supply. 1431 1432config RTC_DRV_AT91SAM9 1433 tristate "AT91SAM9 RTT as RTC" 1434 depends on ARCH_AT91 || COMPILE_TEST 1435 depends on OF && HAS_IOMEM 1436 select MFD_SYSCON 1437 help 1438 Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which 1439 can be used as an RTC thanks to the backup power supply (e.g. a 1440 small coin cell battery) which keeps this block and the GPBR 1441 (General Purpose Backup Registers) block powered when the device 1442 is shutdown. 1443 Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd 1444 probably want to use the real RTC block instead of the "RTT as an 1445 RTC" driver. 1446 1447config RTC_DRV_AU1XXX 1448 tristate "Au1xxx Counter0 RTC support" 1449 depends on MIPS_ALCHEMY 1450 help 1451 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year 1452 counter) to be used as a RTC. 1453 1454 This driver can also be built as a module. If so, the module 1455 will be called rtc-au1xxx. 1456 1457config RTC_DRV_RS5C313 1458 tristate "Ricoh RS5C313" 1459 depends on SH_LANDISK 1460 help 1461 If you say yes here you get support for the Ricoh RS5C313 RTC chips. 1462 1463config RTC_DRV_GENERIC 1464 tristate "Generic RTC support" 1465 # Please consider writing a new RTC driver instead of using the generic 1466 # RTC abstraction 1467 depends on PARISC || M68K || PPC || SUPERH32 || COMPILE_TEST 1468 help 1469 Say Y or M here to enable RTC support on systems using the generic 1470 RTC abstraction. If you do not know what you are doing, you should 1471 just say Y. 1472 1473config RTC_DRV_PXA 1474 tristate "PXA27x/PXA3xx" 1475 depends on ARCH_PXA 1476 select RTC_DRV_SA1100 1477 help 1478 If you say Y here you will get access to the real time clock 1479 built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs 1480 consisting of an SA1100 compatible RTC and the extended PXA RTC. 1481 1482 This RTC driver uses PXA RTC registers available since pxa27x 1483 series (RDxR, RYxR) instead of legacy RCNR, RTAR. 1484 1485config RTC_DRV_VT8500 1486 tristate "VIA/WonderMedia 85xx SoC RTC" 1487 depends on ARCH_VT8500 || COMPILE_TEST 1488 help 1489 If you say Y here you will get access to the real time clock 1490 built into your VIA VT8500 SoC or its relatives. 1491 1492 1493config RTC_DRV_SUN4V 1494 bool "SUN4V Hypervisor RTC" 1495 depends on SPARC64 1496 help 1497 If you say Y here you will get support for the Hypervisor 1498 based RTC on SUN4V systems. 1499 1500config RTC_DRV_SUN6I 1501 bool "Allwinner A31 RTC" 1502 default MACH_SUN6I || MACH_SUN8I 1503 depends on COMMON_CLK 1504 depends on ARCH_SUNXI || COMPILE_TEST 1505 help 1506 If you say Y here you will get support for the RTC found in 1507 some Allwinner SoCs like the A31 or the A64. 1508 1509config RTC_DRV_SUNXI 1510 tristate "Allwinner sun4i/sun7i RTC" 1511 depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST 1512 help 1513 If you say Y here you will get support for the RTC found on 1514 Allwinner A10/A20. 1515 1516config RTC_DRV_STARFIRE 1517 bool "Starfire RTC" 1518 depends on SPARC64 1519 help 1520 If you say Y here you will get support for the RTC found on 1521 Starfire systems. 1522 1523config RTC_DRV_TX4939 1524 tristate "TX4939 SoC" 1525 depends on SOC_TX4939 || COMPILE_TEST 1526 help 1527 Driver for the internal RTC (Realtime Clock) module found on 1528 Toshiba TX4939 SoC. 1529 1530config RTC_DRV_MV 1531 tristate "Marvell SoC RTC" 1532 depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST 1533 help 1534 If you say yes here you will get support for the in-chip RTC 1535 that can be found in some of Marvell's SoC devices, such as 1536 the Kirkwood 88F6281 and 88F6192. 1537 1538 This driver can also be built as a module. If so, the module 1539 will be called rtc-mv. 1540 1541config RTC_DRV_ARMADA38X 1542 tristate "Armada 38x Marvell SoC RTC" 1543 depends on ARCH_MVEBU || COMPILE_TEST 1544 help 1545 If you say yes here you will get support for the in-chip RTC 1546 that can be found in the Armada 38x Marvell's SoC device 1547 1548 This driver can also be built as a module. If so, the module 1549 will be called armada38x-rtc. 1550 1551config RTC_DRV_CADENCE 1552 tristate "Cadence RTC driver" 1553 depends on OF && HAS_IOMEM 1554 help 1555 If you say Y here you will get access to Cadence RTC IP 1556 found on certain SOCs. 1557 1558 To compile this driver as a module, choose M here: the 1559 module will be called rtc-cadence. 1560 1561config RTC_DRV_FTRTC010 1562 tristate "Faraday Technology FTRTC010 RTC" 1563 depends on HAS_IOMEM 1564 default ARCH_GEMINI 1565 help 1566 If you say Y here you will get support for the 1567 Faraday Technolog FTRTC010 found on e.g. Gemini SoC's. 1568 1569 This driver can also be built as a module. If so, the module 1570 will be called rtc-ftrtc010. 1571 1572config RTC_DRV_PS3 1573 tristate "PS3 RTC" 1574 depends on PPC_PS3 1575 help 1576 If you say yes here you will get support for the RTC on PS3. 1577 1578 This driver can also be built as a module. If so, the module 1579 will be called rtc-ps3. 1580 1581config RTC_DRV_COH901331 1582 tristate "ST-Ericsson COH 901 331 RTC" 1583 depends on ARCH_U300 || COMPILE_TEST 1584 help 1585 If you say Y here you will get access to ST-Ericsson 1586 COH 901 331 RTC clock found in some ST-Ericsson Mobile 1587 Platforms. 1588 1589 This driver can also be built as a module. If so, the module 1590 will be called "rtc-coh901331". 1591 1592 1593config RTC_DRV_STMP 1594 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC" 1595 depends on ARCH_MXS || COMPILE_TEST 1596 select STMP_DEVICE 1597 help 1598 If you say yes here you will get support for the onboard 1599 STMP3xxx/i.MX23/i.MX28 RTC. 1600 1601 This driver can also be built as a module. If so, the module 1602 will be called rtc-stmp3xxx. 1603 1604config RTC_DRV_PCAP 1605 tristate "PCAP RTC" 1606 depends on EZX_PCAP 1607 help 1608 If you say Y here you will get support for the RTC found on 1609 the PCAP2 ASIC used on some Motorola phones. 1610 1611config RTC_DRV_MC13XXX 1612 depends on MFD_MC13XXX 1613 tristate "Freescale MC13xxx RTC" 1614 help 1615 This enables support for the RTCs found on Freescale's PMICs 1616 MC13783 and MC13892. 1617 1618config RTC_DRV_MPC5121 1619 tristate "Freescale MPC5121 built-in RTC" 1620 depends on PPC_MPC512x || PPC_MPC52xx 1621 help 1622 If you say yes here you will get support for the 1623 built-in RTC on MPC5121 or on MPC5200. 1624 1625 This driver can also be built as a module. If so, the module 1626 will be called rtc-mpc5121. 1627 1628config RTC_DRV_JZ4740 1629 tristate "Ingenic JZ4740 SoC" 1630 depends on MIPS || COMPILE_TEST 1631 help 1632 If you say yes here you get support for the Ingenic JZ47xx SoCs RTC 1633 controllers. 1634 1635 This driver can also be built as a module. If so, the module 1636 will be called rtc-jz4740. 1637 1638config RTC_DRV_LPC24XX 1639 tristate "NXP RTC for LPC178x/18xx/408x/43xx" 1640 depends on ARCH_LPC18XX || COMPILE_TEST 1641 depends on OF && HAS_IOMEM 1642 help 1643 This enables support for the NXP RTC found which can be found on 1644 NXP LPC178x/18xx/408x/43xx devices. 1645 1646 If you have one of the devices above enable this driver to use 1647 the hardware RTC. This driver can also be built as a module. If 1648 so, the module will be called rtc-lpc24xx. 1649 1650config RTC_DRV_LPC32XX 1651 depends on ARCH_LPC32XX || COMPILE_TEST 1652 tristate "NXP LPC32XX RTC" 1653 help 1654 This enables support for the NXP RTC in the LPC32XX 1655 1656 This driver can also be built as a module. If so, the module 1657 will be called rtc-lpc32xx. 1658 1659config RTC_DRV_PM8XXX 1660 tristate "Qualcomm PMIC8XXX RTC" 1661 depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST 1662 help 1663 If you say yes here you get support for the 1664 Qualcomm PMIC8XXX RTC. 1665 1666 To compile this driver as a module, choose M here: the 1667 module will be called rtc-pm8xxx. 1668 1669config RTC_DRV_TEGRA 1670 tristate "NVIDIA Tegra Internal RTC driver" 1671 depends on ARCH_TEGRA || COMPILE_TEST 1672 help 1673 If you say yes here you get support for the 1674 Tegra 200 series internal RTC module. 1675 1676 This drive can also be built as a module. If so, the module 1677 will be called rtc-tegra. 1678 1679config RTC_DRV_PUV3 1680 tristate "PKUnity v3 RTC support" 1681 depends on ARCH_PUV3 1682 help 1683 This enables support for the RTC in the PKUnity-v3 SoCs. 1684 1685 This drive can also be built as a module. If so, the module 1686 will be called rtc-puv3. 1687 1688config RTC_DRV_LOONGSON1 1689 tristate "loongson1 RTC support" 1690 depends on MACH_LOONGSON32 1691 help 1692 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year 1693 counter) to be used as a RTC. 1694 1695 This driver can also be built as a module. If so, the module 1696 will be called rtc-ls1x. 1697 1698config RTC_DRV_MXC 1699 tristate "Freescale MXC Real Time Clock" 1700 depends on ARCH_MXC 1701 help 1702 If you say yes here you get support for the Freescale MXC 1703 RTC module. 1704 1705 This driver can also be built as a module, if so, the module 1706 will be called "rtc-mxc". 1707 1708config RTC_DRV_MXC_V2 1709 tristate "Freescale MXC Real Time Clock for i.MX53" 1710 depends on ARCH_MXC 1711 help 1712 If you say yes here you get support for the Freescale MXC 1713 SRTC module in i.MX53 processor. 1714 1715 This driver can also be built as a module, if so, the module 1716 will be called "rtc-mxc_v2". 1717 1718config RTC_DRV_SNVS 1719 tristate "Freescale SNVS RTC support" 1720 select REGMAP_MMIO 1721 depends on HAS_IOMEM 1722 depends on OF 1723 help 1724 If you say yes here you get support for the Freescale SNVS 1725 Low Power (LP) RTC module. 1726 1727 This driver can also be built as a module, if so, the module 1728 will be called "rtc-snvs". 1729 1730config RTC_DRV_IMX_SC 1731 depends on IMX_SCU 1732 depends on HAVE_ARM_SMCCC 1733 tristate "NXP i.MX System Controller RTC support" 1734 help 1735 If you say yes here you get support for the NXP i.MX System 1736 Controller RTC module. 1737 1738config RTC_DRV_SIRFSOC 1739 tristate "SiRFSOC RTC" 1740 depends on ARCH_SIRF 1741 help 1742 Say "yes" here to support the real time clock on SiRF SOC chips. 1743 This driver can also be built as a module called rtc-sirfsoc. 1744 1745config RTC_DRV_ST_LPC 1746 tristate "STMicroelectronics LPC RTC" 1747 depends on ARCH_STI 1748 depends on OF 1749 help 1750 Say Y here to include STMicroelectronics Low Power Controller 1751 (LPC) based RTC support. 1752 1753 To compile this driver as a module, choose M here: the 1754 module will be called rtc-st-lpc. 1755 1756config RTC_DRV_MOXART 1757 tristate "MOXA ART RTC" 1758 depends on ARCH_MOXART || COMPILE_TEST 1759 help 1760 If you say yes here you get support for the MOXA ART 1761 RTC module. 1762 1763 This driver can also be built as a module. If so, the module 1764 will be called rtc-moxart 1765 1766config RTC_DRV_MT6397 1767 tristate "MediaTek PMIC based RTC" 1768 depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN) 1769 help 1770 This selects the MediaTek(R) RTC driver. RTC is part of MediaTek 1771 MT6397 PMIC. You should enable MT6397 PMIC MFD before select 1772 MediaTek(R) RTC driver. 1773 1774 If you want to use MediaTek(R) RTC interface, select Y or M here. 1775 1776config RTC_DRV_MT7622 1777 tristate "MediaTek SoC based RTC" 1778 depends on ARCH_MEDIATEK || COMPILE_TEST 1779 help 1780 This enables support for the real time clock built in the MediaTek 1781 SoCs. 1782 1783 This drive can also be built as a module. If so, the module 1784 will be called rtc-mt7622. 1785 1786config RTC_DRV_XGENE 1787 tristate "APM X-Gene RTC" 1788 depends on HAS_IOMEM 1789 depends on ARCH_XGENE || COMPILE_TEST 1790 help 1791 If you say yes here you get support for the APM X-Gene SoC real time 1792 clock. 1793 1794 This driver can also be built as a module, if so, the module 1795 will be called "rtc-xgene". 1796 1797config RTC_DRV_PIC32 1798 tristate "Microchip PIC32 RTC" 1799 depends on MACH_PIC32 1800 default y 1801 help 1802 If you say yes here you get support for the PIC32 RTC module. 1803 1804 This driver can also be built as a module. If so, the module 1805 will be called rtc-pic32 1806 1807config RTC_DRV_R7301 1808 tristate "EPSON TOYOCOM RTC-7301SF/DG" 1809 select REGMAP_MMIO 1810 depends on OF && HAS_IOMEM 1811 help 1812 If you say yes here you get support for the EPSON TOYOCOM 1813 RTC-7301SF/DG chips. 1814 1815 This driver can also be built as a module. If so, the module 1816 will be called rtc-r7301. 1817 1818config RTC_DRV_STM32 1819 tristate "STM32 RTC" 1820 select REGMAP_MMIO 1821 depends on ARCH_STM32 || COMPILE_TEST 1822 help 1823 If you say yes here you get support for the STM32 On-Chip 1824 Real Time Clock. 1825 1826 This driver can also be built as a module, if so, the module 1827 will be called "rtc-stm32". 1828 1829config RTC_DRV_CPCAP 1830 depends on MFD_CPCAP 1831 tristate "Motorola CPCAP RTC" 1832 help 1833 Say y here for CPCAP rtc found on some Motorola phones 1834 and tablets such as Droid 4. 1835 1836config RTC_DRV_RTD119X 1837 bool "Realtek RTD129x RTC" 1838 depends on ARCH_REALTEK || COMPILE_TEST 1839 default ARCH_REALTEK 1840 help 1841 If you say yes here, you get support for the RTD1295 SoC 1842 Real Time Clock. 1843 1844config RTC_DRV_ASPEED 1845 tristate "ASPEED RTC" 1846 depends on OF 1847 depends on ARCH_ASPEED || COMPILE_TEST 1848 help 1849 If you say yes here you get support for the ASPEED BMC SoC real time 1850 clocks. 1851 1852 This driver can also be built as a module, if so, the module 1853 will be called "rtc-aspeed". 1854 1855comment "HID Sensor RTC drivers" 1856 1857config RTC_DRV_HID_SENSOR_TIME 1858 tristate "HID Sensor Time" 1859 depends on USB_HID 1860 depends on HID_SENSOR_HUB && IIO 1861 select HID_SENSOR_IIO_COMMON 1862 help 1863 Say yes here to build support for the HID Sensors of type Time. 1864 This drivers makes such sensors available as RTCs. 1865 1866 If this driver is compiled as a module, it will be named 1867 rtc-hid-sensor-time. 1868 1869config RTC_DRV_GOLDFISH 1870 tristate "Goldfish Real Time Clock" 1871 depends on OF && HAS_IOMEM 1872 depends on GOLDFISH || COMPILE_TEST 1873 help 1874 Say yes to enable RTC driver for the Goldfish based virtual platform. 1875 1876 Goldfish is a code name for the virtual platform developed by Google 1877 for Android emulation. 1878 1879config RTC_DRV_WILCO_EC 1880 tristate "Wilco EC RTC" 1881 depends on WILCO_EC 1882 default m 1883 help 1884 If you say yes here, you get read/write support for the Real Time 1885 Clock on the Wilco Embedded Controller (Wilco is a kind of Chromebook) 1886 1887 This can also be built as a module. If so, the module will 1888 be named "rtc_wilco_ec". 1889 1890endif # RTC_CLASS 1891