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 This clock should be battery-backed, so that it reads the correct 45 time when the system boots from a power-off state. Otherwise, your 46 system will need an external clock source (like an NTP server). 47 48 If the clock you specify here is not battery backed, it may still 49 be useful to reinitialize system time when resuming from system 50 sleep states. Do not specify an RTC here unless it stays powered 51 during all this system's supported sleep states. 52 53config RTC_SYSTOHC 54 bool "Set the RTC time based on NTP synchronization" 55 default y 56 help 57 If you say yes here, the system time (wall clock) will be stored 58 in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11 59 minutes if userspace reports synchronized NTP status. 60 61config RTC_SYSTOHC_DEVICE 62 string "RTC used to synchronize NTP adjustment" 63 depends on RTC_SYSTOHC 64 default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS 65 default "rtc0" 66 help 67 The RTC device used for NTP synchronization. The main difference 68 between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this 69 one can sleep when setting time, because it runs in the workqueue 70 context. 71 72config RTC_DEBUG 73 bool "RTC debug support" 74 help 75 Say yes here to enable debugging support in the RTC framework 76 and individual RTC drivers. 77 78config RTC_NVMEM 79 bool "RTC non volatile storage support" 80 select NVMEM 81 default RTC_CLASS 82 help 83 Say yes here to add support for the non volatile (often battery 84 backed) storage present on RTCs. 85 86comment "RTC interfaces" 87 88config RTC_INTF_SYSFS 89 bool "/sys/class/rtc/rtcN (sysfs)" 90 depends on SYSFS 91 default RTC_CLASS 92 help 93 Say yes here if you want to use your RTCs using sysfs interfaces, 94 /sys/class/rtc/rtc0 through /sys/.../rtcN. 95 96 If unsure, say Y. 97 98config RTC_INTF_PROC 99 bool "/proc/driver/rtc (procfs for rtcN)" 100 depends on PROC_FS 101 default RTC_CLASS 102 help 103 Say yes here if you want to use your system clock RTC through 104 the proc interface, /proc/driver/rtc. 105 Other RTCs will not be available through that API. 106 If there is no RTC for the system clock, then the first RTC(rtc0) 107 is used by default. 108 109 If unsure, say Y. 110 111config RTC_INTF_DEV 112 bool "/dev/rtcN (character devices)" 113 default RTC_CLASS 114 help 115 Say yes here if you want to use your RTCs using the /dev 116 interfaces, which "udev" sets up as /dev/rtc0 through 117 /dev/rtcN. 118 119 You may want to set up a symbolic link so one of these 120 can be accessed as /dev/rtc, which is a name 121 expected by "hwclock" and some other programs. Recent 122 versions of "udev" are known to set up the symlink for you. 123 124 If unsure, say Y. 125 126config RTC_INTF_DEV_UIE_EMUL 127 bool "RTC UIE emulation on dev interface" 128 depends on RTC_INTF_DEV 129 help 130 Provides an emulation for RTC_UIE if the underlying rtc chip 131 driver does not expose RTC_UIE ioctls. Those requests generate 132 once-per-second update interrupts, used for synchronization. 133 134 The emulation code will read the time from the hardware 135 clock several times per second, please enable this option 136 only if you know that you really need it. 137 138config RTC_DRV_TEST 139 tristate "Test driver/device" 140 help 141 If you say yes here you get support for the 142 RTC test driver. It's a software RTC which can be 143 used to test the RTC subsystem APIs. It gets 144 the time from the system clock. 145 You want this driver only if you are doing development 146 on the RTC subsystem. Please read the source code 147 for further details. 148 149 This driver can also be built as a module. If so, the module 150 will be called rtc-test. 151 152comment "I2C RTC drivers" 153 154if I2C 155 156config RTC_DRV_88PM860X 157 tristate "Marvell 88PM860x" 158 depends on MFD_88PM860X 159 help 160 If you say yes here you get support for RTC function in Marvell 161 88PM860x chips. 162 163 This driver can also be built as a module. If so, the module 164 will be called rtc-88pm860x. 165 166config RTC_DRV_88PM80X 167 tristate "Marvell 88PM80x" 168 depends on MFD_88PM800 169 help 170 If you say yes here you get support for RTC function in Marvell 171 88PM80x chips. 172 173 This driver can also be built as a module. If so, the module 174 will be called rtc-88pm80x. 175 176config RTC_DRV_ABB5ZES3 177 select REGMAP_I2C 178 tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3" 179 help 180 If you say yes here you get support for the Abracon 181 AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip. 182 183 This driver can also be built as a module. If so, the module 184 will be called rtc-ab-b5ze-s3. 185 186config RTC_DRV_ABEOZ9 187 select REGMAP_I2C 188 tristate "Abracon AB-RTCMC-32.768kHz-EOZ9" 189 help 190 If you say yes here you get support for the Abracon 191 AB-RTCMC-32.768kHz-EOA9 I2C RTC chip. 192 193 This driver can also be built as a module. If so, the module 194 will be called rtc-ab-e0z9. 195 196config RTC_DRV_ABX80X 197 tristate "Abracon ABx80x" 198 select WATCHDOG_CORE if WATCHDOG 199 help 200 If you say yes here you get support for Abracon AB080X and AB180X 201 families of ultra-low-power battery- and capacitor-backed real-time 202 clock chips. 203 204 This driver can also be built as a module. If so, the module 205 will be called rtc-abx80x. 206 207config RTC_DRV_AC100 208 tristate "X-Powers AC100" 209 depends on MFD_AC100 210 help 211 If you say yes here you get support for the real-time clock found 212 in X-Powers AC100 family peripheral ICs. 213 214 This driver can also be built as a module. If so, the module 215 will be called rtc-ac100. 216 217config RTC_DRV_BRCMSTB 218 tristate "Broadcom STB wake-timer" 219 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST 220 default ARCH_BRCMSTB || BMIPS_GENERIC 221 help 222 If you say yes here you get support for the wake-timer found on 223 Broadcom STB SoCs (BCM7xxx). 224 225 This driver can also be built as a module. If so, the module will 226 be called rtc-brcmstb-waketimer. 227 228config RTC_DRV_AS3722 229 tristate "ams AS3722 RTC driver" 230 depends on MFD_AS3722 231 help 232 If you say yes here you get support for the RTC of ams AS3722 PMIC 233 chips. 234 235 This driver can also be built as a module. If so, the module 236 will be called rtc-as3722. 237 238config RTC_DRV_DS1307 239 tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057" 240 select REGMAP_I2C 241 select WATCHDOG_CORE if WATCHDOG 242 help 243 If you say yes here you get support for various compatible RTC 244 chips (often with battery backup) connected with I2C. This driver 245 should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341, 246 ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips. 247 In some cases the RTC must already have been initialized (by 248 manufacturing or a bootloader). 249 250 The first seven registers on these chips hold an RTC, and other 251 registers may add features such as NVRAM, a trickle charger for 252 the RTC/NVRAM backup power, and alarms. NVRAM is visible in 253 sysfs, but other chip features may not be available. 254 255 This driver can also be built as a module. If so, the module 256 will be called rtc-ds1307. 257 258config RTC_DRV_DS1307_CENTURY 259 bool "Century bit support for rtc-ds1307" 260 depends on RTC_DRV_DS1307 261 default n 262 help 263 The DS1307 driver suffered from a bug where it was enabling the 264 century bit inconditionnally but never used it when reading the time. 265 It made the driver unable to support dates beyond 2099. 266 Setting this option will add proper support for the century bit but if 267 the time was previously set using a kernel predating this option, 268 reading the date will return a date in the next century. 269 To solve that, you could boot a kernel without this option set, set 270 the RTC date and then boot a kernel with this option set. 271 272config RTC_DRV_DS1374 273 tristate "Dallas/Maxim DS1374" 274 help 275 If you say yes here you get support for Dallas Semiconductor 276 DS1374 real-time clock chips. If an interrupt is associated 277 with the device, the alarm functionality is supported. 278 279 This driver can also be built as a module. If so, the module 280 will be called rtc-ds1374. 281 282config RTC_DRV_DS1374_WDT 283 bool "Dallas/Maxim DS1374 watchdog timer" 284 depends on RTC_DRV_DS1374 && WATCHDOG 285 select WATCHDOG_CORE 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 select REGMAP_IRQ 330 help 331 If you say yes here you will get support for the 332 RTC of Maxim MAX8907 PMIC. 333 334 This driver can also be built as a module. If so, the module 335 will be called rtc-max8907. 336 337config RTC_DRV_MAX8925 338 tristate "Maxim MAX8925" 339 depends on MFD_MAX8925 340 help 341 If you say yes here you will get support for the 342 RTC of Maxim MAX8925 PMIC. 343 344 This driver can also be built as a module. If so, the module 345 will be called rtc-max8925. 346 347config RTC_DRV_MAX8998 348 tristate "Maxim MAX8998" 349 depends on MFD_MAX8998 350 help 351 If you say yes here you will get support for the 352 RTC of Maxim MAX8998 PMIC. 353 354 This driver can also be built as a module. If so, the module 355 will be called rtc-max8998. 356 357config RTC_DRV_MAX8997 358 tristate "Maxim MAX8997" 359 depends on MFD_MAX8997 360 help 361 If you say yes here you will get support for the 362 RTC of Maxim MAX8997 PMIC. 363 364 This driver can also be built as a module. If so, the module 365 will be called rtc-max8997. 366 367config RTC_DRV_MAX77686 368 tristate "Maxim MAX77686" 369 depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST 370 help 371 If you say yes here you will get support for the 372 RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC. 373 374 This driver can also be built as a module. If so, the module 375 will be called rtc-max77686. 376 377config RTC_DRV_RK808 378 tristate "Rockchip RK805/RK808/RK809/RK817/RK818 RTC" 379 depends on MFD_RK808 380 help 381 If you say yes here you will get support for the 382 RTC of RK805, RK809 and RK817, RK808 and RK818 PMIC. 383 384 This driver can also be built as a module. If so, the module 385 will be called rk808-rtc. 386 387config RTC_DRV_RS5C372 388 tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A" 389 help 390 If you say yes here you get support for the 391 Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips. 392 393 This driver can also be built as a module. If so, the module 394 will be called rtc-rs5c372. 395 396config RTC_DRV_ISL1208 397 tristate "Intersil ISL1208" 398 help 399 If you say yes here you get support for the 400 Intersil ISL1208 RTC chip. 401 402 This driver can also be built as a module. If so, the module 403 will be called rtc-isl1208. 404 405config RTC_DRV_ISL12022 406 tristate "Intersil ISL12022" 407 help 408 If you say yes here you get support for the 409 Intersil ISL12022 RTC chip. 410 411 This driver can also be built as a module. If so, the module 412 will be called rtc-isl12022. 413 414config RTC_DRV_ISL12026 415 tristate "Intersil ISL12026" 416 depends on OF || COMPILE_TEST 417 help 418 If you say yes here you get support for the 419 Intersil ISL12026 RTC chip. 420 421 This driver can also be built as a module. If so, the module 422 will be called rtc-isl12026. 423 424config RTC_DRV_X1205 425 tristate "Xicor/Intersil X1205" 426 help 427 If you say yes here you get support for the 428 Xicor/Intersil X1205 RTC chip. 429 430 This driver can also be built as a module. If so, the module 431 will be called rtc-x1205. 432 433config RTC_DRV_PCF8523 434 tristate "NXP PCF8523" 435 help 436 If you say yes here you get support for the NXP PCF8523 RTC 437 chips. 438 439 This driver can also be built as a module. If so, the module 440 will be called rtc-pcf8523. 441 442config RTC_DRV_PCF85063 443 tristate "NXP PCF85063" 444 select REGMAP_I2C 445 help 446 If you say yes here you get support for the PCF85063 RTC chip 447 448 This driver can also be built as a module. If so, the module 449 will be called rtc-pcf85063. 450 451config RTC_DRV_PCF85363 452 tristate "NXP PCF85363" 453 select REGMAP_I2C 454 help 455 If you say yes here you get support for the PCF85363 RTC chip. 456 457 This driver can also be built as a module. If so, the module 458 will be called rtc-pcf85363. 459 460 The nvmem interface will be named pcf85363-#, where # is the 461 zero-based instance number. 462 463config RTC_DRV_PCF8563 464 tristate "Philips PCF8563/Epson RTC8564" 465 help 466 If you say yes here you get support for the 467 Philips PCF8563 RTC chip. The Epson RTC8564 468 should work as well. 469 470 This driver can also be built as a module. If so, the module 471 will be called rtc-pcf8563. 472 473config RTC_DRV_PCF8583 474 tristate "Philips PCF8583" 475 help 476 If you say yes here you get support for the Philips PCF8583 477 RTC chip found on Acorn RiscPCs. This driver supports the 478 platform specific method of retrieving the current year from 479 the RTC's SRAM. It will work on other platforms with the same 480 chip, but the year will probably have to be tweaked. 481 482 This driver can also be built as a module. If so, the module 483 will be called rtc-pcf8583. 484 485config RTC_DRV_M41T80 486 tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible" 487 help 488 If you say Y here you will get support for the ST M41T60 489 and M41T80 RTC chips series. Currently, the following chips are 490 supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84, 491 M41ST85, M41ST87, and MicroCrystal RV4162. 492 493 This driver can also be built as a module. If so, the module 494 will be called rtc-m41t80. 495 496config RTC_DRV_M41T80_WDT 497 bool "ST M41T65/M41T80 series RTC watchdog timer" 498 depends on RTC_DRV_M41T80 499 help 500 If you say Y here you will get support for the 501 watchdog timer in the ST M41T60 and M41T80 RTC chips series. 502 503config RTC_DRV_BD70528 504 tristate "ROHM BD70528 PMIC RTC" 505 depends on MFD_ROHM_BD70528 && (BD70528_WATCHDOG || !BD70528_WATCHDOG) 506 help 507 If you say Y here you will get support for the RTC 508 block on ROHM BD70528 and BD71828 Power Management IC. 509 510 This driver can also be built as a module. If so, the module 511 will be called rtc-bd70528. 512 513config RTC_DRV_BQ32K 514 tristate "TI BQ32000" 515 help 516 If you say Y here you will get support for the TI 517 BQ32000 I2C RTC chip. 518 519 This driver can also be built as a module. If so, the module 520 will be called rtc-bq32k. 521 522config RTC_DRV_DM355EVM 523 tristate "TI DaVinci DM355 EVM RTC" 524 depends on MFD_DM355EVM_MSP 525 help 526 Supports the RTC firmware in the MSP430 on the DM355 EVM. 527 528config RTC_DRV_TWL92330 529 bool "TI TWL92330/Menelaus" 530 depends on MENELAUS 531 help 532 If you say yes here you get support for the RTC on the 533 TWL92330 "Menelaus" power management chip, used with OMAP2 534 platforms. The support is integrated with the rest of 535 the Menelaus driver; it's not separate module. 536 537config RTC_DRV_TWL4030 538 tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0" 539 depends on TWL4030_CORE 540 depends on OF 541 help 542 If you say yes here you get support for the RTC on the 543 TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms. 544 545 This driver can also be built as a module. If so, the module 546 will be called rtc-twl. 547 548config RTC_DRV_PALMAS 549 tristate "TI Palmas RTC driver" 550 depends on MFD_PALMAS 551 help 552 If you say yes here you get support for the RTC of TI PALMA series PMIC 553 chips. 554 555 This driver can also be built as a module. If so, the module 556 will be called rtc-palma. 557 558config RTC_DRV_TPS6586X 559 tristate "TI TPS6586X RTC driver" 560 depends on MFD_TPS6586X 561 help 562 TI Power Management IC TPS6586X supports RTC functionality 563 along with alarm. This driver supports the RTC driver for 564 the TPS6586X RTC module. 565 566config RTC_DRV_TPS65910 567 tristate "TI TPS65910 RTC driver" 568 depends on MFD_TPS65910 569 help 570 If you say yes here you get support for the RTC on the 571 TPS65910 chips. 572 573 This driver can also be built as a module. If so, the module 574 will be called rtc-tps65910. 575 576config RTC_DRV_TPS80031 577 tristate "TI TPS80031/TPS80032 RTC driver" 578 depends on MFD_TPS80031 579 help 580 TI Power Management IC TPS80031 supports RTC functionality 581 along with alarm. This driver supports the RTC driver for 582 the TPS80031 RTC module. 583 584config RTC_DRV_RC5T583 585 tristate "RICOH 5T583 RTC driver" 586 depends on MFD_RC5T583 587 help 588 If you say yes here you get support for the RTC on the 589 RICOH 5T583 chips. 590 591 This driver can also be built as a module. If so, the module 592 will be called rtc-rc5t583. 593 594config RTC_DRV_RC5T619 595 tristate "RICOH RC5T619 RTC driver" 596 depends on MFD_RN5T618 597 help 598 If you say yes here you get support for the RTC on the 599 RICOH RC5T619 chips. 600 601 This driver can also be built as a module. If so, the module 602 will be called rtc-rc5t619. 603 604config RTC_DRV_S35390A 605 tristate "Seiko Instruments S-35390A" 606 select BITREVERSE 607 help 608 If you say yes here you will get support for the Seiko 609 Instruments S-35390A. 610 611 This driver can also be built as a module. If so the module 612 will be called rtc-s35390a. 613 614config RTC_DRV_FM3130 615 tristate "Ramtron FM3130" 616 help 617 If you say Y here you will get support for the 618 Ramtron FM3130 RTC chips. 619 Ramtron FM3130 is a chip with two separate devices inside, 620 RTC clock and FRAM. This driver provides only RTC functionality. 621 622 This driver can also be built as a module. If so the module 623 will be called rtc-fm3130. 624 625config RTC_DRV_RX8010 626 tristate "Epson RX8010SJ" 627 select REGMAP_I2C 628 help 629 If you say yes here you get support for the Epson RX8010SJ RTC 630 chip. 631 632 This driver can also be built as a module. If so, the module 633 will be called rtc-rx8010. 634 635config RTC_DRV_RX8581 636 tristate "Epson RX-8571/RX-8581" 637 select REGMAP_I2C 638 help 639 If you say yes here you will get support for the Epson RX-8571/ 640 RX-8581. 641 642 This driver can also be built as a module. If so the module 643 will be called rtc-rx8581. 644 645config RTC_DRV_RX8025 646 tristate "Epson RX-8025SA/NB" 647 help 648 If you say yes here you get support for the Epson 649 RX-8025SA/NB RTC chips. 650 651 This driver can also be built as a module. If so, the module 652 will be called rtc-rx8025. 653 654config RTC_DRV_EM3027 655 tristate "EM Microelectronic EM3027" 656 help 657 If you say yes here you get support for the EM 658 Microelectronic EM3027 RTC chips. 659 660 This driver can also be built as a module. If so, the module 661 will be called rtc-em3027. 662 663config RTC_DRV_RV3028 664 tristate "Micro Crystal RV3028" 665 select REGMAP_I2C 666 help 667 If you say yes here you get support for the Micro Crystal 668 RV3028. 669 670 This driver can also be built as a module. If so, the module 671 will be called rtc-rv3028. 672 673config RTC_DRV_RV3032 674 tristate "Micro Crystal RV3032" 675 select REGMAP_I2C 676 help 677 If you say yes here you get support for the Micro Crystal 678 RV3032. 679 680 This driver can also be built as a module. If so, the module 681 will be called rtc-rv3032. 682 683config RTC_DRV_RV8803 684 tristate "Micro Crystal RV8803, Epson RX8900" 685 help 686 If you say yes here you get support for the Micro Crystal RV8803 and 687 Epson RX8900 RTC chips. 688 689 This driver can also be built as a module. If so, the module 690 will be called rtc-rv8803. 691 692config RTC_DRV_S5M 693 tristate "Samsung S2M/S5M series" 694 depends on MFD_SEC_CORE || COMPILE_TEST 695 select REGMAP_IRQ 696 select REGMAP_I2C 697 help 698 If you say yes here you will get support for the 699 RTC of Samsung S2MPS14 and S5M PMIC series. 700 701 This driver can also be built as a module. If so, the module 702 will be called rtc-s5m. 703 704config RTC_DRV_SD3078 705 tristate "ZXW Shenzhen whwave SD3078" 706 select REGMAP_I2C 707 help 708 If you say yes here you get support for the ZXW Shenzhen whwave 709 SD3078 RTC chips. 710 711 This driver can also be built as a module. If so, the module 712 will be called rtc-sd3078 713 714endif # I2C 715 716comment "SPI RTC drivers" 717 718if SPI_MASTER 719 720config RTC_DRV_M41T93 721 tristate "ST M41T93" 722 help 723 If you say yes here you will get support for the 724 ST M41T93 SPI RTC chip. 725 726 This driver can also be built as a module. If so, the module 727 will be called rtc-m41t93. 728 729config RTC_DRV_M41T94 730 tristate "ST M41T94" 731 help 732 If you say yes here you will get support for the 733 ST M41T94 SPI RTC chip. 734 735 This driver can also be built as a module. If so, the module 736 will be called rtc-m41t94. 737 738config RTC_DRV_DS1302 739 tristate "Dallas/Maxim DS1302" 740 depends on SPI 741 help 742 If you say yes here you get support for the Dallas DS1302 RTC chips. 743 744 This driver can also be built as a module. If so, the module 745 will be called rtc-ds1302. 746 747config RTC_DRV_DS1305 748 tristate "Dallas/Maxim DS1305/DS1306" 749 help 750 Select this driver to get support for the Dallas/Maxim DS1305 751 and DS1306 real time clock chips. These support a trickle 752 charger, alarms, and NVRAM in addition to the clock. 753 754 This driver can also be built as a module. If so, the module 755 will be called rtc-ds1305. 756 757config RTC_DRV_DS1343 758 select REGMAP_SPI 759 tristate "Dallas/Maxim DS1343/DS1344" 760 help 761 If you say yes here you get support for the 762 Dallas/Maxim DS1343 and DS1344 real time clock chips. 763 Support for trickle charger, alarm is provided. 764 765 This driver can also be built as a module. If so, the module 766 will be called rtc-ds1343. 767 768config RTC_DRV_DS1347 769 select REGMAP_SPI 770 tristate "Dallas/Maxim DS1347" 771 help 772 If you say yes here you get support for the 773 Dallas/Maxim DS1347 chips. 774 775 This driver only supports the RTC feature, and not other chip 776 features such as alarms. 777 778 This driver can also be built as a module. If so, the module 779 will be called rtc-ds1347. 780 781config RTC_DRV_DS1390 782 tristate "Dallas/Maxim DS1390/93/94" 783 help 784 If you say yes here you get support for the 785 Dallas/Maxim DS1390/93/94 chips. 786 787 This driver supports the RTC feature and trickle charging but not 788 other chip features such as alarms. 789 790 This driver can also be built as a module. If so, the module 791 will be called rtc-ds1390. 792 793config RTC_DRV_MAX6916 794 tristate "Maxim MAX6916" 795 help 796 If you say yes here you will get support for the 797 Maxim MAX6916 SPI RTC chip. 798 799 This driver only supports the RTC feature, and not other chip 800 features such as alarms. 801 802 This driver can also be built as a module. If so, the module 803 will be called rtc-max6916. 804 805config RTC_DRV_R9701 806 tristate "Epson RTC-9701JE" 807 help 808 If you say yes here you will get support for the 809 Epson RTC-9701JE SPI RTC chip. 810 811 This driver can also be built as a module. If so, the module 812 will be called rtc-r9701. 813 814config RTC_DRV_RX4581 815 tristate "Epson RX-4581" 816 help 817 If you say yes here you will get support for the Epson RX-4581. 818 819 This driver can also be built as a module. If so the module 820 will be called rtc-rx4581. 821 822config RTC_DRV_RX6110 823 tristate "Epson RX-6110" 824 select REGMAP_SPI 825 help 826 If you say yes here you will get support for the Epson RX-6610. 827 828 This driver can also be built as a module. If so the module 829 will be called rtc-rx6110. 830 831config RTC_DRV_RS5C348 832 tristate "Ricoh RS5C348A/B" 833 help 834 If you say yes here you get support for the 835 Ricoh RS5C348A and RS5C348B RTC chips. 836 837 This driver can also be built as a module. If so, the module 838 will be called rtc-rs5c348. 839 840config RTC_DRV_MAX6902 841 tristate "Maxim MAX6902" 842 help 843 If you say yes here you will get support for the 844 Maxim MAX6902 SPI RTC chip. 845 846 This driver can also be built as a module. If so, the module 847 will be called rtc-max6902. 848 849config RTC_DRV_PCF2123 850 tristate "NXP PCF2123" 851 select REGMAP_SPI 852 help 853 If you say yes here you get support for the NXP PCF2123 854 RTC chip. 855 856 This driver can also be built as a module. If so, the module 857 will be called rtc-pcf2123. 858 859config RTC_DRV_MCP795 860 tristate "Microchip MCP795" 861 help 862 If you say yes here you will get support for the Microchip MCP795. 863 864 This driver can also be built as a module. If so the module 865 will be called rtc-mcp795. 866 867endif # SPI_MASTER 868 869# 870# Helper to resolve issues with configs that have SPI enabled but I2C 871# modular. See SND_SOC_I2C_AND_SPI for more information 872# 873config RTC_I2C_AND_SPI 874 tristate 875 default m if I2C=m 876 default y if I2C=y 877 default y if SPI_MASTER=y 878 879comment "SPI and I2C RTC drivers" 880 881config RTC_DRV_DS3232 882 tristate "Dallas/Maxim DS3232/DS3234" 883 depends on RTC_I2C_AND_SPI 884 select REGMAP_I2C if I2C 885 select REGMAP_SPI if SPI_MASTER 886 help 887 If you say yes here you get support for Dallas Semiconductor 888 DS3232 and DS3234 real-time clock chips. If an interrupt is associated 889 with the device, the alarm functionality is supported. 890 891 This driver can also be built as a module. If so, the module 892 will be called rtc-ds3232. 893 894config RTC_DRV_DS3232_HWMON 895 bool "HWMON support for Dallas/Maxim DS3232/DS3234" 896 depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m) 897 default y 898 help 899 Say Y here if you want to expose temperature sensor data on 900 rtc-ds3232 901 902config RTC_DRV_PCF2127 903 tristate "NXP PCF2127" 904 depends on RTC_I2C_AND_SPI 905 select REGMAP_I2C if I2C 906 select REGMAP_SPI if SPI_MASTER 907 select WATCHDOG_CORE if WATCHDOG 908 help 909 If you say yes here you get support for the NXP PCF2127/29 RTC 910 chips with integrated quartz crystal for industrial applications. 911 Both chips also have watchdog timer and tamper switch detection 912 features. 913 914 PCF2127 has an additional feature of 512 bytes battery backed 915 memory that's accessible using nvmem interface. 916 917 This driver can also be built as a module. If so, the module 918 will be called rtc-pcf2127. 919 920config RTC_DRV_RV3029C2 921 tristate "Micro Crystal RV3029/3049" 922 depends on RTC_I2C_AND_SPI 923 select REGMAP_I2C if I2C 924 select REGMAP_SPI if SPI_MASTER 925 help 926 If you say yes here you get support for the Micro Crystal 927 RV3029 and RV3049 RTC chips. 928 929 This driver can also be built as a module. If so, the module 930 will be called rtc-rv3029c2. 931 932config RTC_DRV_RV3029_HWMON 933 bool "HWMON support for RV3029/3049" 934 depends on RTC_DRV_RV3029C2 && HWMON 935 depends on !(RTC_DRV_RV3029C2=y && HWMON=m) 936 default y 937 help 938 Say Y here if you want to expose temperature sensor data on 939 rtc-rv3029. 940 941comment "Platform RTC drivers" 942 943# this 'CMOS' RTC driver is arch dependent because it requires 944# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a 945# global rtc_lock ... it's not yet just another platform_device. 946 947config RTC_DRV_CMOS 948 tristate "PC-style 'CMOS'" 949 depends on X86 || ARM || PPC || MIPS || SPARC64 950 default y if X86 951 select RTC_MC146818_LIB 952 help 953 Say "yes" here to get direct support for the real time clock 954 found in every PC or ACPI-based system, and some other boards. 955 Specifically the original MC146818, compatibles like those in 956 PC south bridges, the DS12887 or M48T86, some multifunction 957 or LPC bus chips, and so on. 958 959 Your system will need to define the platform device used by 960 this driver, otherwise it won't be accessible. This means 961 you can safely enable this driver if you don't know whether 962 or not your board has this kind of hardware. 963 964 This driver can also be built as a module. If so, the module 965 will be called rtc-cmos. 966 967config RTC_DRV_ALPHA 968 bool "Alpha PC-style CMOS" 969 depends on ALPHA 970 select RTC_MC146818_LIB 971 default y 972 help 973 Direct support for the real-time clock found on every Alpha 974 system, specifically MC146818 compatibles. If in doubt, say Y. 975 976config RTC_DRV_VRTC 977 tristate "Virtual RTC for Intel MID platforms" 978 depends on X86_INTEL_MID 979 default y if X86_INTEL_MID 980 981 help 982 Say "yes" here to get direct support for the real time clock 983 found on Moorestown platforms. The VRTC is a emulated RTC that 984 derives its clock source from a real RTC in the PMIC. The MC146818 985 style programming interface is mostly conserved, but any 986 updates are done via IPC calls to the system controller FW. 987 988config RTC_DRV_DS1216 989 tristate "Dallas DS1216" 990 depends on SNI_RM 991 help 992 If you say yes here you get support for the Dallas DS1216 RTC chips. 993 994config RTC_DRV_DS1286 995 tristate "Dallas DS1286" 996 depends on HAS_IOMEM 997 help 998 If you say yes here you get support for the Dallas DS1286 RTC chips. 999 1000config RTC_DRV_DS1511 1001 tristate "Dallas DS1511" 1002 depends on HAS_IOMEM 1003 help 1004 If you say yes here you get support for the 1005 Dallas DS1511 timekeeping/watchdog chip. 1006 1007 This driver can also be built as a module. If so, the module 1008 will be called rtc-ds1511. 1009 1010config RTC_DRV_DS1553 1011 tristate "Maxim/Dallas DS1553" 1012 depends on HAS_IOMEM 1013 help 1014 If you say yes here you get support for the 1015 Maxim/Dallas DS1553 timekeeping chip. 1016 1017 This driver can also be built as a module. If so, the module 1018 will be called rtc-ds1553. 1019 1020config RTC_DRV_DS1685_FAMILY 1021 tristate "Dallas/Maxim DS1685 Family" 1022 help 1023 If you say yes here you get support for the Dallas/Maxim DS1685 1024 family of real time chips. This family includes the DS1685/DS1687, 1025 DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and 1026 DS17885/DS17887 chips. 1027 1028 This driver can also be built as a module. If so, the module 1029 will be called rtc-ds1685. 1030 1031choice 1032 prompt "Subtype" 1033 depends on RTC_DRV_DS1685_FAMILY 1034 default RTC_DRV_DS1685 1035 1036config RTC_DRV_DS1685 1037 bool "DS1685/DS1687" 1038 help 1039 This enables support for the Dallas/Maxim DS1685/DS1687 real time 1040 clock chip. 1041 1042 This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30) 1043 systems, as well as EPPC-405-UC modules by electronic system design 1044 GmbH. 1045 1046config RTC_DRV_DS1689 1047 bool "DS1689/DS1693" 1048 help 1049 This enables support for the Dallas/Maxim DS1689/DS1693 real time 1050 clock chip. 1051 1052 This is an older RTC chip, supplanted by the DS1685/DS1687 above, 1053 which supports a few minor features such as Vcc, Vbat, and Power 1054 Cycle counters, plus a customer-specific, 8-byte ROM/Serial number. 1055 1056 It also works for the even older DS1688/DS1691 RTC chips, which are 1057 virtually the same and carry the same model number. Both chips 1058 have 114 bytes of user NVRAM. 1059 1060config RTC_DRV_DS17285 1061 bool "DS17285/DS17287" 1062 help 1063 This enables support for the Dallas/Maxim DS17285/DS17287 real time 1064 clock chip. 1065 1066 This chip features 2kb of extended NV-SRAM. It may possibly be 1067 found in some SGI O2 systems (rare). 1068 1069config RTC_DRV_DS17485 1070 bool "DS17485/DS17487" 1071 help 1072 This enables support for the Dallas/Maxim DS17485/DS17487 real time 1073 clock chip. 1074 1075 This chip features 4kb of extended NV-SRAM. 1076 1077config RTC_DRV_DS17885 1078 bool "DS17885/DS17887" 1079 help 1080 This enables support for the Dallas/Maxim DS17885/DS17887 real time 1081 clock chip. 1082 1083 This chip features 8kb of extended NV-SRAM. 1084 1085endchoice 1086 1087config RTC_DRV_DS1742 1088 tristate "Maxim/Dallas DS1742/1743" 1089 depends on HAS_IOMEM 1090 help 1091 If you say yes here you get support for the 1092 Maxim/Dallas DS1742/1743 timekeeping chip. 1093 1094 This driver can also be built as a module. If so, the module 1095 will be called rtc-ds1742. 1096 1097config RTC_DRV_DS2404 1098 tristate "Maxim/Dallas DS2404" 1099 help 1100 If you say yes here you get support for the 1101 Dallas DS2404 RTC chip. 1102 1103 This driver can also be built as a module. If so, the module 1104 will be called rtc-ds2404. 1105 1106config RTC_DRV_DA9052 1107 tristate "Dialog DA9052/DA9053 RTC" 1108 depends on PMIC_DA9052 1109 help 1110 Say y here to support the RTC driver for Dialog Semiconductor 1111 DA9052-BC and DA9053-AA/Bx PMICs. 1112 1113config RTC_DRV_DA9055 1114 tristate "Dialog Semiconductor DA9055 RTC" 1115 depends on MFD_DA9055 1116 help 1117 If you say yes here you will get support for the 1118 RTC of the Dialog DA9055 PMIC. 1119 1120 This driver can also be built as a module. If so, the module 1121 will be called rtc-da9055 1122 1123config RTC_DRV_DA9063 1124 tristate "Dialog Semiconductor DA9063/DA9062 RTC" 1125 depends on MFD_DA9063 || MFD_DA9062 1126 help 1127 If you say yes here you will get support for the RTC subsystem 1128 for the Dialog Semiconductor PMIC chips DA9063 and DA9062. 1129 1130 This driver can also be built as a module. If so, the module 1131 will be called "rtc-da9063". 1132 1133config RTC_DRV_EFI 1134 tristate "EFI RTC" 1135 depends on EFI && !X86 1136 help 1137 If you say yes here you will get support for the EFI 1138 Real Time Clock. 1139 1140 This driver can also be built as a module. If so, the module 1141 will be called rtc-efi. 1142 1143config RTC_DRV_STK17TA8 1144 tristate "Simtek STK17TA8" 1145 depends on HAS_IOMEM 1146 help 1147 If you say yes here you get support for the 1148 Simtek STK17TA8 timekeeping chip. 1149 1150 This driver can also be built as a module. If so, the module 1151 will be called rtc-stk17ta8. 1152 1153config RTC_DRV_M48T86 1154 tristate "ST M48T86/Dallas DS12887" 1155 help 1156 If you say Y here you will get support for the 1157 ST M48T86 and Dallas DS12887 RTC chips. 1158 1159 This driver can also be built as a module. If so, the module 1160 will be called rtc-m48t86. 1161 1162config RTC_DRV_M48T35 1163 tristate "ST M48T35" 1164 depends on HAS_IOMEM 1165 help 1166 If you say Y here you will get support for the 1167 ST M48T35 RTC chip. 1168 1169 This driver can also be built as a module, if so, the module 1170 will be called "rtc-m48t35". 1171 1172config RTC_DRV_M48T59 1173 tristate "ST M48T59/M48T08/M48T02" 1174 depends on HAS_IOMEM 1175 help 1176 If you say Y here you will get support for the 1177 ST M48T59 RTC chip and compatible ST M48T08 and M48T02. 1178 1179 These chips are usually found in Sun SPARC and UltraSPARC 1180 workstations. 1181 1182 This driver can also be built as a module, if so, the module 1183 will be called "rtc-m48t59". 1184 1185config RTC_DRV_MSM6242 1186 tristate "Oki MSM6242" 1187 depends on HAS_IOMEM 1188 help 1189 If you say yes here you get support for the Oki MSM6242 1190 timekeeping chip. It is used in some Amiga models (e.g. A2000). 1191 1192 This driver can also be built as a module. If so, the module 1193 will be called rtc-msm6242. 1194 1195config RTC_DRV_BQ4802 1196 tristate "TI BQ4802" 1197 depends on HAS_IOMEM 1198 help 1199 If you say Y here you will get support for the TI 1200 BQ4802 RTC chip. 1201 1202 This driver can also be built as a module. If so, the module 1203 will be called rtc-bq4802. 1204 1205config RTC_DRV_RP5C01 1206 tristate "Ricoh RP5C01" 1207 depends on HAS_IOMEM 1208 help 1209 If you say yes here you get support for the Ricoh RP5C01 1210 timekeeping chip. It is used in some Amiga models (e.g. A3000 1211 and A4000). 1212 1213 This driver can also be built as a module. If so, the module 1214 will be called rtc-rp5c01. 1215 1216config RTC_DRV_V3020 1217 tristate "EM Microelectronic V3020" 1218 help 1219 If you say yes here you will get support for the 1220 EM Microelectronic v3020 RTC chip. 1221 1222 This driver can also be built as a module. If so, the module 1223 will be called rtc-v3020. 1224 1225config RTC_DRV_WM831X 1226 tristate "Wolfson Microelectronics WM831x RTC" 1227 depends on MFD_WM831X 1228 help 1229 If you say yes here you will get support for the RTC subsystem 1230 of the Wolfson Microelectronics WM831X series PMICs. 1231 1232 This driver can also be built as a module. If so, the module 1233 will be called "rtc-wm831x". 1234 1235config RTC_DRV_WM8350 1236 tristate "Wolfson Microelectronics WM8350 RTC" 1237 depends on MFD_WM8350 1238 help 1239 If you say yes here you will get support for the RTC subsystem 1240 of the Wolfson Microelectronics WM8350. 1241 1242 This driver can also be built as a module. If so, the module 1243 will be called "rtc-wm8350". 1244 1245config RTC_DRV_SC27XX 1246 tristate "Spreadtrum SC27xx RTC" 1247 depends on MFD_SC27XX_PMIC || COMPILE_TEST 1248 help 1249 If you say Y here you will get support for the RTC subsystem 1250 of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs 1251 includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips. 1252 1253 This driver can also be built as a module. If so, the module 1254 will be called rtc-sc27xx. 1255 1256config RTC_DRV_SPEAR 1257 tristate "SPEAR ST RTC" 1258 depends on PLAT_SPEAR || COMPILE_TEST 1259 default y 1260 help 1261 If you say Y here you will get support for the RTC found on 1262 spear 1263 1264config RTC_DRV_PCF50633 1265 depends on MFD_PCF50633 1266 tristate "NXP PCF50633 RTC" 1267 help 1268 If you say yes here you get support for the RTC subsystem of the 1269 NXP PCF50633 used in embedded systems. 1270 1271config RTC_DRV_AB3100 1272 tristate "ST-Ericsson AB3100 RTC" 1273 depends on AB3100_CORE 1274 default y if AB3100_CORE 1275 help 1276 Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC 1277 support. This chip contains a battery- and capacitor-backed RTC. 1278 1279config RTC_DRV_AB8500 1280 tristate "ST-Ericsson AB8500 RTC" 1281 depends on AB8500_CORE 1282 select RTC_INTF_DEV 1283 select RTC_INTF_DEV_UIE_EMUL 1284 help 1285 Select this to enable the ST-Ericsson AB8500 power management IC RTC 1286 support. This chip contains a battery- and capacitor-backed RTC. 1287 1288config RTC_DRV_OPAL 1289 tristate "IBM OPAL RTC driver" 1290 depends on PPC_POWERNV 1291 default y 1292 help 1293 If you say yes here you get support for the PowerNV platform RTC 1294 driver based on OPAL interfaces. 1295 1296 This driver can also be built as a module. If so, the module 1297 will be called rtc-opal. 1298 1299config RTC_DRV_ZYNQMP 1300 tristate "Xilinx Zynq Ultrascale+ MPSoC RTC" 1301 depends on OF && HAS_IOMEM 1302 help 1303 If you say yes here you get support for the RTC controller found on 1304 Xilinx Zynq Ultrascale+ MPSoC. 1305 1306config RTC_DRV_CROS_EC 1307 tristate "Chrome OS EC RTC driver" 1308 depends on CROS_EC 1309 help 1310 If you say yes here you will get support for the 1311 Chrome OS Embedded Controller's RTC. 1312 1313 This driver can also be built as a module. If so, the module 1314 will be called rtc-cros-ec. 1315 1316comment "on-CPU RTC drivers" 1317 1318config RTC_DRV_ASM9260 1319 tristate "Alphascale asm9260 RTC" 1320 depends on MACH_ASM9260 || COMPILE_TEST 1321 help 1322 If you say yes here you get support for the RTC on the 1323 Alphascale asm9260 SoC. 1324 1325 This driver can also be built as a module. If so, the module 1326 will be called rtc-asm9260. 1327 1328config RTC_DRV_DAVINCI 1329 tristate "TI DaVinci RTC" 1330 depends on ARCH_DAVINCI_DM365 || COMPILE_TEST 1331 help 1332 If you say yes here you get support for the RTC on the 1333 DaVinci platforms (DM365). 1334 1335 This driver can also be built as a module. If so, the module 1336 will be called rtc-davinci. 1337 1338config RTC_DRV_DIGICOLOR 1339 tristate "Conexant Digicolor RTC" 1340 depends on ARCH_DIGICOLOR || COMPILE_TEST 1341 help 1342 If you say yes here you get support for the RTC on Conexant 1343 Digicolor platforms. This currently includes the CX92755 SoC. 1344 1345 This driver can also be built as a module. If so, the module 1346 will be called rtc-digicolor. 1347 1348config RTC_DRV_IMXDI 1349 tristate "Freescale IMX DryIce Real Time Clock" 1350 depends on ARCH_MXC 1351 help 1352 Support for Freescale IMX DryIce RTC 1353 1354 This driver can also be built as a module, if so, the module 1355 will be called "rtc-imxdi". 1356 1357config RTC_DRV_FSL_FTM_ALARM 1358 tristate "Freescale FlexTimer alarm timer" 1359 depends on ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST 1360 help 1361 For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A, 1362 LS1088A, LS208xA, we can use FTM as the wakeup source. 1363 1364 Say y here to enable FTM alarm support. The FTM alarm provides 1365 alarm functions for wakeup system from deep sleep. 1366 1367 This driver can also be built as a module, if so, the module 1368 will be called "rtc-fsl-ftm-alarm". 1369 1370config RTC_DRV_MESON 1371 tristate "Amlogic Meson RTC" 1372 depends on (ARM && ARCH_MESON) || COMPILE_TEST 1373 select REGMAP_MMIO 1374 help 1375 Support for the RTC block on the Amlogic Meson6, Meson8, Meson8b 1376 and Meson8m2 SoCs. 1377 1378 This driver can also be built as a module, if so, the module 1379 will be called "rtc-meson". 1380 1381config RTC_DRV_MESON_VRTC 1382 tristate "Amlogic Meson Virtual RTC" 1383 depends on ARCH_MESON || COMPILE_TEST 1384 default m if ARCH_MESON 1385 help 1386 If you say yes here you will get support for the 1387 Virtual RTC of Amlogic SoCs. 1388 1389 This driver can also be built as a module. If so, the module 1390 will be called rtc-meson-vrtc. 1391 1392config RTC_DRV_OMAP 1393 tristate "TI OMAP Real Time Clock" 1394 depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST 1395 depends on OF 1396 depends on PINCTRL 1397 select GENERIC_PINCONF 1398 help 1399 Say "yes" here to support the on chip real time clock 1400 present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx. 1401 1402 This driver can also be built as a module, if so, module 1403 will be called rtc-omap. 1404 1405config HAVE_S3C_RTC 1406 bool 1407 help 1408 This will include RTC support for Samsung SoCs. If 1409 you want to include RTC support for any machine, kindly 1410 select this in the respective mach-XXXX/Kconfig file. 1411 1412config RTC_DRV_S3C 1413 tristate "Samsung S3C series SoC RTC" 1414 depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST 1415 help 1416 RTC (Realtime Clock) driver for the clock inbuilt into the 1417 Samsung S3C24XX series of SoCs. This can provide periodic 1418 interrupt rates from 1Hz to 64Hz for user programs, and 1419 wakeup from Alarm. 1420 1421 The driver currently supports the common features on all the 1422 S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440 1423 and S3C2442. 1424 1425 This driver can also be build as a module. If so, the module 1426 will be called rtc-s3c. 1427 1428config RTC_DRV_EP93XX 1429 tristate "Cirrus Logic EP93XX" 1430 depends on ARCH_EP93XX || COMPILE_TEST 1431 help 1432 If you say yes here you get support for the 1433 RTC embedded in the Cirrus Logic EP93XX processors. 1434 1435 This driver can also be built as a module. If so, the module 1436 will be called rtc-ep93xx. 1437 1438config RTC_DRV_SA1100 1439 tristate "SA11x0/PXA2xx/PXA910" 1440 depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP 1441 help 1442 If you say Y here you will get access to the real time clock 1443 built into your SA11x0 or PXA2xx CPU. 1444 1445 To compile this driver as a module, choose M here: the 1446 module will be called rtc-sa1100. 1447 1448config RTC_DRV_SH 1449 tristate "SuperH On-Chip RTC" 1450 depends on SUPERH || ARCH_RENESAS 1451 help 1452 Say Y here to enable support for the on-chip RTC found in 1453 most SuperH processors. This RTC is also found in RZ/A SoCs. 1454 1455 To compile this driver as a module, choose M here: the 1456 module will be called rtc-sh. 1457 1458config RTC_DRV_VR41XX 1459 tristate "NEC VR41XX" 1460 depends on CPU_VR41XX || COMPILE_TEST 1461 help 1462 If you say Y here you will get access to the real time clock 1463 built into your NEC VR41XX CPU. 1464 1465 To compile this driver as a module, choose M here: the 1466 module will be called rtc-vr41xx. 1467 1468config RTC_DRV_PL030 1469 tristate "ARM AMBA PL030 RTC" 1470 depends on ARM_AMBA 1471 help 1472 If you say Y here you will get access to ARM AMBA 1473 PrimeCell PL030 RTC found on certain ARM SOCs. 1474 1475 To compile this driver as a module, choose M here: the 1476 module will be called rtc-pl030. 1477 1478config RTC_DRV_PL031 1479 tristate "ARM AMBA PL031 RTC" 1480 depends on ARM_AMBA 1481 help 1482 If you say Y here you will get access to ARM AMBA 1483 PrimeCell PL031 RTC found on certain ARM SOCs. 1484 1485 To compile this driver as a module, choose M here: the 1486 module will be called rtc-pl031. 1487 1488config RTC_DRV_AT91RM9200 1489 tristate "AT91RM9200 or some AT91SAM9 RTC" 1490 depends on ARCH_AT91 || COMPILE_TEST 1491 depends on OF 1492 help 1493 Driver for the internal RTC (Realtime Clock) module found on 1494 Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips 1495 this is powered by the backup power supply. 1496 1497config RTC_DRV_AT91SAM9 1498 tristate "AT91SAM9 RTT as RTC" 1499 depends on ARCH_AT91 || COMPILE_TEST 1500 depends on OF && HAS_IOMEM 1501 select MFD_SYSCON 1502 help 1503 Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which 1504 can be used as an RTC thanks to the backup power supply (e.g. a 1505 small coin cell battery) which keeps this block and the GPBR 1506 (General Purpose Backup Registers) block powered when the device 1507 is shutdown. 1508 Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd 1509 probably want to use the real RTC block instead of the "RTT as an 1510 RTC" driver. 1511 1512config RTC_DRV_AU1XXX 1513 tristate "Au1xxx Counter0 RTC support" 1514 depends on MIPS_ALCHEMY 1515 help 1516 This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year 1517 counter) to be used as a RTC. 1518 1519 This driver can also be built as a module. If so, the module 1520 will be called rtc-au1xxx. 1521 1522config RTC_DRV_RS5C313 1523 tristate "Ricoh RS5C313" 1524 depends on SH_LANDISK 1525 help 1526 If you say yes here you get support for the Ricoh RS5C313 RTC chips. 1527 1528config RTC_DRV_GENERIC 1529 tristate "Generic RTC support" 1530 # Please consider writing a new RTC driver instead of using the generic 1531 # RTC abstraction 1532 depends on PARISC || M68K || PPC || SUPERH || COMPILE_TEST 1533 help 1534 Say Y or M here to enable RTC support on systems using the generic 1535 RTC abstraction. If you do not know what you are doing, you should 1536 just say Y. 1537 1538config RTC_DRV_PXA 1539 tristate "PXA27x/PXA3xx" 1540 depends on ARCH_PXA 1541 select RTC_DRV_SA1100 1542 help 1543 If you say Y here you will get access to the real time clock 1544 built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs 1545 consisting of an SA1100 compatible RTC and the extended PXA RTC. 1546 1547 This RTC driver uses PXA RTC registers available since pxa27x 1548 series (RDxR, RYxR) instead of legacy RCNR, RTAR. 1549 1550config RTC_DRV_VT8500 1551 tristate "VIA/WonderMedia 85xx SoC RTC" 1552 depends on ARCH_VT8500 || COMPILE_TEST 1553 help 1554 If you say Y here you will get access to the real time clock 1555 built into your VIA VT8500 SoC or its relatives. 1556 1557 1558config RTC_DRV_SUN4V 1559 bool "SUN4V Hypervisor RTC" 1560 depends on SPARC64 1561 help 1562 If you say Y here you will get support for the Hypervisor 1563 based RTC on SUN4V systems. 1564 1565config RTC_DRV_SUN6I 1566 bool "Allwinner A31 RTC" 1567 default MACH_SUN6I || MACH_SUN8I 1568 depends on COMMON_CLK 1569 depends on ARCH_SUNXI || COMPILE_TEST 1570 help 1571 If you say Y here you will get support for the RTC found in 1572 some Allwinner SoCs like the A31 or the A64. 1573 1574config RTC_DRV_SUNXI 1575 tristate "Allwinner sun4i/sun7i RTC" 1576 depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST 1577 help 1578 If you say Y here you will get support for the RTC found on 1579 Allwinner A10/A20. 1580 1581config RTC_DRV_STARFIRE 1582 bool "Starfire RTC" 1583 depends on SPARC64 1584 help 1585 If you say Y here you will get support for the RTC found on 1586 Starfire systems. 1587 1588config RTC_DRV_TX4939 1589 tristate "TX4939 SoC" 1590 depends on SOC_TX4939 || COMPILE_TEST 1591 help 1592 Driver for the internal RTC (Realtime Clock) module found on 1593 Toshiba TX4939 SoC. 1594 1595config RTC_DRV_MV 1596 tristate "Marvell SoC RTC" 1597 depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST 1598 help 1599 If you say yes here you will get support for the in-chip RTC 1600 that can be found in some of Marvell's SoC devices, such as 1601 the Kirkwood 88F6281 and 88F6192. 1602 1603 This driver can also be built as a module. If so, the module 1604 will be called rtc-mv. 1605 1606config RTC_DRV_ARMADA38X 1607 tristate "Armada 38x Marvell SoC RTC" 1608 depends on ARCH_MVEBU || COMPILE_TEST 1609 help 1610 If you say yes here you will get support for the in-chip RTC 1611 that can be found in the Armada 38x Marvell's SoC device 1612 1613 This driver can also be built as a module. If so, the module 1614 will be called armada38x-rtc. 1615 1616config RTC_DRV_CADENCE 1617 tristate "Cadence RTC driver" 1618 depends on OF && HAS_IOMEM 1619 help 1620 If you say Y here you will get access to Cadence RTC IP 1621 found on certain SOCs. 1622 1623 To compile this driver as a module, choose M here: the 1624 module will be called rtc-cadence. 1625 1626config RTC_DRV_FTRTC010 1627 tristate "Faraday Technology FTRTC010 RTC" 1628 depends on HAS_IOMEM 1629 default ARCH_GEMINI 1630 help 1631 If you say Y here you will get support for the 1632 Faraday Technolog FTRTC010 found on e.g. Gemini SoC's. 1633 1634 This driver can also be built as a module. If so, the module 1635 will be called rtc-ftrtc010. 1636 1637config RTC_DRV_PS3 1638 tristate "PS3 RTC" 1639 depends on PPC_PS3 1640 help 1641 If you say yes here you will get support for the RTC on PS3. 1642 1643 This driver can also be built as a module. If so, the module 1644 will be called rtc-ps3. 1645 1646config RTC_DRV_COH901331 1647 tristate "ST-Ericsson COH 901 331 RTC" 1648 depends on ARCH_U300 || COMPILE_TEST 1649 help 1650 If you say Y here you will get access to ST-Ericsson 1651 COH 901 331 RTC clock found in some ST-Ericsson Mobile 1652 Platforms. 1653 1654 This driver can also be built as a module. If so, the module 1655 will be called "rtc-coh901331". 1656 1657 1658config RTC_DRV_STMP 1659 tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC" 1660 depends on ARCH_MXS || COMPILE_TEST 1661 select STMP_DEVICE 1662 help 1663 If you say yes here you will get support for the onboard 1664 STMP3xxx/i.MX23/i.MX28 RTC. 1665 1666 This driver can also be built as a module. If so, the module 1667 will be called rtc-stmp3xxx. 1668 1669config RTC_DRV_PCAP 1670 tristate "PCAP RTC" 1671 depends on EZX_PCAP 1672 help 1673 If you say Y here you will get support for the RTC found on 1674 the PCAP2 ASIC used on some Motorola phones. 1675 1676config RTC_DRV_MC13XXX 1677 depends on MFD_MC13XXX 1678 tristate "Freescale MC13xxx RTC" 1679 help 1680 This enables support for the RTCs found on Freescale's PMICs 1681 MC13783 and MC13892. 1682 1683config RTC_DRV_MPC5121 1684 tristate "Freescale MPC5121 built-in RTC" 1685 depends on PPC_MPC512x || PPC_MPC52xx 1686 help 1687 If you say yes here you will get support for the 1688 built-in RTC on MPC5121 or on MPC5200. 1689 1690 This driver can also be built as a module. If so, the module 1691 will be called rtc-mpc5121. 1692 1693config RTC_DRV_JZ4740 1694 tristate "Ingenic JZ4740 SoC" 1695 depends on MIPS || COMPILE_TEST 1696 depends on OF 1697 help 1698 If you say yes here you get support for the Ingenic JZ47xx SoCs RTC 1699 controllers. 1700 1701 This driver can also be built as a module. If so, the module 1702 will be called rtc-jz4740. 1703 1704config RTC_DRV_LPC24XX 1705 tristate "NXP RTC for LPC178x/18xx/408x/43xx" 1706 depends on ARCH_LPC18XX || COMPILE_TEST 1707 depends on OF && HAS_IOMEM 1708 help 1709 This enables support for the NXP RTC found which can be found on 1710 NXP LPC178x/18xx/408x/43xx devices. 1711 1712 If you have one of the devices above enable this driver to use 1713 the hardware RTC. This driver can also be built as a module. If 1714 so, the module will be called rtc-lpc24xx. 1715 1716config RTC_DRV_LPC32XX 1717 depends on ARCH_LPC32XX || COMPILE_TEST 1718 tristate "NXP LPC32XX RTC" 1719 help 1720 This enables support for the NXP RTC in the LPC32XX 1721 1722 This driver can also be built as a module. If so, the module 1723 will be called rtc-lpc32xx. 1724 1725config RTC_DRV_PM8XXX 1726 tristate "Qualcomm PMIC8XXX RTC" 1727 depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST 1728 help 1729 If you say yes here you get support for the 1730 Qualcomm PMIC8XXX RTC. 1731 1732 To compile this driver as a module, choose M here: the 1733 module will be called rtc-pm8xxx. 1734 1735config RTC_DRV_TEGRA 1736 tristate "NVIDIA Tegra Internal RTC driver" 1737 depends on ARCH_TEGRA || COMPILE_TEST 1738 help 1739 If you say yes here you get support for the 1740 Tegra 200 series internal RTC module. 1741 1742 This drive can also be built as a module. If so, the module 1743 will be called rtc-tegra. 1744 1745config RTC_DRV_LOONGSON1 1746 tristate "loongson1 RTC support" 1747 depends on MACH_LOONGSON32 1748 help 1749 This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year 1750 counter) to be used as a RTC. 1751 1752 This driver can also be built as a module. If so, the module 1753 will be called rtc-ls1x. 1754 1755config RTC_DRV_MXC 1756 tristate "Freescale MXC Real Time Clock" 1757 depends on ARCH_MXC 1758 help 1759 If you say yes here you get support for the Freescale MXC 1760 RTC module. 1761 1762 This driver can also be built as a module, if so, the module 1763 will be called "rtc-mxc". 1764 1765config RTC_DRV_MXC_V2 1766 tristate "Freescale MXC Real Time Clock for i.MX53" 1767 depends on ARCH_MXC 1768 help 1769 If you say yes here you get support for the Freescale MXC 1770 SRTC module in i.MX53 processor. 1771 1772 This driver can also be built as a module, if so, the module 1773 will be called "rtc-mxc_v2". 1774 1775config RTC_DRV_SNVS 1776 tristate "Freescale SNVS RTC support" 1777 select REGMAP_MMIO 1778 depends on ARCH_MXC || COMPILE_TEST 1779 depends on HAS_IOMEM 1780 depends on OF 1781 help 1782 If you say yes here you get support for the Freescale SNVS 1783 Low Power (LP) RTC module. 1784 1785 This driver can also be built as a module, if so, the module 1786 will be called "rtc-snvs". 1787 1788config RTC_DRV_IMX_SC 1789 depends on IMX_SCU 1790 depends on HAVE_ARM_SMCCC 1791 tristate "NXP i.MX System Controller RTC support" 1792 help 1793 If you say yes here you get support for the NXP i.MX System 1794 Controller RTC module. 1795 1796config RTC_DRV_SIRFSOC 1797 tristate "SiRFSOC RTC" 1798 depends on ARCH_SIRF 1799 help 1800 Say "yes" here to support the real time clock on SiRF SOC chips. 1801 This driver can also be built as a module called rtc-sirfsoc. 1802 1803config RTC_DRV_ST_LPC 1804 tristate "STMicroelectronics LPC RTC" 1805 depends on ARCH_STI 1806 depends on OF 1807 help 1808 Say Y here to include STMicroelectronics Low Power Controller 1809 (LPC) based RTC support. 1810 1811 To compile this driver as a module, choose M here: the 1812 module will be called rtc-st-lpc. 1813 1814config RTC_DRV_MOXART 1815 tristate "MOXA ART RTC" 1816 depends on ARCH_MOXART || COMPILE_TEST 1817 help 1818 If you say yes here you get support for the MOXA ART 1819 RTC module. 1820 1821 This driver can also be built as a module. If so, the module 1822 will be called rtc-moxart 1823 1824config RTC_DRV_MT2712 1825 tristate "MediaTek MT2712 SoC based RTC" 1826 depends on ARCH_MEDIATEK || COMPILE_TEST 1827 help 1828 This enables support for the real time clock built in the MediaTek 1829 SoCs for MT2712. 1830 1831 This drive can also be built as a module. If so, the module 1832 will be called rtc-mt2712. 1833 1834config RTC_DRV_MT6397 1835 tristate "MediaTek PMIC based RTC" 1836 depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN) 1837 help 1838 This selects the MediaTek(R) RTC driver. RTC is part of MediaTek 1839 MT6397 PMIC. You should enable MT6397 PMIC MFD before select 1840 MediaTek(R) RTC driver. 1841 1842 If you want to use MediaTek(R) RTC interface, select Y or M here. 1843 1844config RTC_DRV_MT7622 1845 tristate "MediaTek SoC based RTC" 1846 depends on ARCH_MEDIATEK || COMPILE_TEST 1847 help 1848 This enables support for the real time clock built in the MediaTek 1849 SoCs. 1850 1851 This drive can also be built as a module. If so, the module 1852 will be called rtc-mt7622. 1853 1854config RTC_DRV_XGENE 1855 tristate "APM X-Gene RTC" 1856 depends on HAS_IOMEM 1857 depends on ARCH_XGENE || COMPILE_TEST 1858 help 1859 If you say yes here you get support for the APM X-Gene SoC real time 1860 clock. 1861 1862 This driver can also be built as a module, if so, the module 1863 will be called "rtc-xgene". 1864 1865config RTC_DRV_PIC32 1866 tristate "Microchip PIC32 RTC" 1867 depends on MACH_PIC32 1868 default y 1869 help 1870 If you say yes here you get support for the PIC32 RTC module. 1871 1872 This driver can also be built as a module. If so, the module 1873 will be called rtc-pic32 1874 1875config RTC_DRV_R7301 1876 tristate "EPSON TOYOCOM RTC-7301SF/DG" 1877 select REGMAP_MMIO 1878 depends on OF && HAS_IOMEM 1879 help 1880 If you say yes here you get support for the EPSON TOYOCOM 1881 RTC-7301SF/DG chips. 1882 1883 This driver can also be built as a module. If so, the module 1884 will be called rtc-r7301. 1885 1886config RTC_DRV_STM32 1887 tristate "STM32 RTC" 1888 select REGMAP_MMIO 1889 depends on ARCH_STM32 || COMPILE_TEST 1890 help 1891 If you say yes here you get support for the STM32 On-Chip 1892 Real Time Clock. 1893 1894 This driver can also be built as a module, if so, the module 1895 will be called "rtc-stm32". 1896 1897config RTC_DRV_CPCAP 1898 depends on MFD_CPCAP 1899 tristate "Motorola CPCAP RTC" 1900 help 1901 Say y here for CPCAP rtc found on some Motorola phones 1902 and tablets such as Droid 4. 1903 1904config RTC_DRV_RTD119X 1905 bool "Realtek RTD129x RTC" 1906 depends on ARCH_REALTEK || COMPILE_TEST 1907 default ARCH_REALTEK 1908 help 1909 If you say yes here, you get support for the RTD1295 SoC 1910 Real Time Clock. 1911 1912config RTC_DRV_ASPEED 1913 tristate "ASPEED RTC" 1914 depends on OF 1915 depends on ARCH_ASPEED || COMPILE_TEST 1916 help 1917 If you say yes here you get support for the ASPEED BMC SoC real time 1918 clocks. 1919 1920 This driver can also be built as a module, if so, the module 1921 will be called "rtc-aspeed". 1922 1923comment "HID Sensor RTC drivers" 1924 1925config RTC_DRV_HID_SENSOR_TIME 1926 tristate "HID Sensor Time" 1927 depends on USB_HID 1928 depends on HID_SENSOR_HUB && IIO 1929 select HID_SENSOR_IIO_COMMON 1930 help 1931 Say yes here to build support for the HID Sensors of type Time. 1932 This drivers makes such sensors available as RTCs. 1933 1934 If this driver is compiled as a module, it will be named 1935 rtc-hid-sensor-time. 1936 1937config RTC_DRV_GOLDFISH 1938 tristate "Goldfish Real Time Clock" 1939 depends on OF && HAS_IOMEM 1940 depends on GOLDFISH || COMPILE_TEST 1941 help 1942 Say yes to enable RTC driver for the Goldfish based virtual platform. 1943 1944 Goldfish is a code name for the virtual platform developed by Google 1945 for Android emulation. 1946 1947config RTC_DRV_WILCO_EC 1948 tristate "Wilco EC RTC" 1949 depends on WILCO_EC 1950 default m 1951 help 1952 If you say yes here, you get read/write support for the Real Time 1953 Clock on the Wilco Embedded Controller (Wilco is a kind of Chromebook) 1954 1955 This can also be built as a module. If so, the module will 1956 be named "rtc_wilco_ec". 1957 1958endif # RTC_CLASS 1959