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	help
 628	  If you say yes here you get support for the Epson RX8010SJ RTC
 629	  chip.
 630
 631	  This driver can also be built as a module. If so, the module
 632	  will be called rtc-rx8010.
 633
 634config RTC_DRV_RX8581
 635	tristate "Epson RX-8571/RX-8581"
 636	select REGMAP_I2C
 637	help
 638	  If you say yes here you will get support for the Epson RX-8571/
 639	  RX-8581.
 640
 641	  This driver can also be built as a module. If so the module
 642	  will be called rtc-rx8581.
 643
 644config RTC_DRV_RX8025
 645	tristate "Epson RX-8025SA/NB"
 646	help
 647	  If you say yes here you get support for the Epson
 648	  RX-8025SA/NB RTC chips.
 649
 650	  This driver can also be built as a module. If so, the module
 651	  will be called rtc-rx8025.
 652
 653config RTC_DRV_EM3027
 654	tristate "EM Microelectronic EM3027"
 655	help
 656	  If you say yes here you get support for the EM
 657	  Microelectronic EM3027 RTC chips.
 658
 659	  This driver can also be built as a module. If so, the module
 660	  will be called rtc-em3027.
 661
 662config RTC_DRV_RV3028
 663	tristate "Micro Crystal RV3028"
 664	select REGMAP_I2C
 665	help
 666	  If you say yes here you get support for the Micro Crystal
 667	  RV3028.
 668
 669	  This driver can also be built as a module. If so, the module
 670	  will be called rtc-rv3028.
 671
 672config RTC_DRV_RV8803
 673	tristate "Micro Crystal RV8803, Epson RX8900"
 674	help
 675	  If you say yes here you get support for the Micro Crystal RV8803 and
 676	  Epson RX8900 RTC chips.
 677
 678	  This driver can also be built as a module. If so, the module
 679	  will be called rtc-rv8803.
 680
 681config RTC_DRV_S5M
 682	tristate "Samsung S2M/S5M series"
 683	depends on MFD_SEC_CORE || COMPILE_TEST
 684	select REGMAP_IRQ
 685	help
 686	  If you say yes here you will get support for the
 687	  RTC of Samsung S2MPS14 and S5M PMIC series.
 688
 689	  This driver can also be built as a module. If so, the module
 690	  will be called rtc-s5m.
 691
 692config RTC_DRV_SD3078
 693	tristate "ZXW Shenzhen whwave SD3078"
 694	select REGMAP_I2C
 695	help
 696	  If you say yes here you get support for the ZXW Shenzhen whwave
 697	  SD3078 RTC chips.
 698
 699	  This driver can also be built as a module. If so, the module
 700	  will be called rtc-sd3078
 701
 702endif # I2C
 703
 704comment "SPI RTC drivers"
 705
 706if SPI_MASTER
 707
 708config RTC_DRV_M41T93
 709	tristate "ST M41T93"
 710	help
 711	  If you say yes here you will get support for the
 712	  ST M41T93 SPI RTC chip.
 713
 714	  This driver can also be built as a module. If so, the module
 715	  will be called rtc-m41t93.
 716
 717config RTC_DRV_M41T94
 718	tristate "ST M41T94"
 719	help
 720	  If you say yes here you will get support for the
 721	  ST M41T94 SPI RTC chip.
 722
 723	  This driver can also be built as a module. If so, the module
 724	  will be called rtc-m41t94.
 725
 726config RTC_DRV_DS1302
 727	tristate "Dallas/Maxim DS1302"
 728	depends on SPI
 729	help
 730	  If you say yes here you get support for the Dallas DS1302 RTC chips.
 731
 732	  This driver can also be built as a module. If so, the module
 733	  will be called rtc-ds1302.
 734
 735config RTC_DRV_DS1305
 736	tristate "Dallas/Maxim DS1305/DS1306"
 737	help
 738	  Select this driver to get support for the Dallas/Maxim DS1305
 739	  and DS1306 real time clock chips. These support a trickle
 740	  charger, alarms, and NVRAM in addition to the clock.
 741
 742	  This driver can also be built as a module. If so, the module
 743	  will be called rtc-ds1305.
 744
 745config RTC_DRV_DS1343
 746	select REGMAP_SPI
 747	tristate "Dallas/Maxim DS1343/DS1344"
 748	help
 749	  If you say yes here you get support for the
 750	  Dallas/Maxim DS1343 and DS1344 real time clock chips.
 751	  Support for trickle charger, alarm is provided.
 752
 753	  This driver can also be built as a module. If so, the module
 754	  will be called rtc-ds1343.
 755
 756config RTC_DRV_DS1347
 757	select REGMAP_SPI
 758	tristate "Dallas/Maxim DS1347"
 759	help
 760	  If you say yes here you get support for the
 761	  Dallas/Maxim DS1347 chips.
 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-ds1347.
 768
 769config RTC_DRV_DS1390
 770	tristate "Dallas/Maxim DS1390/93/94"
 771	help
 772	  If you say yes here you get support for the
 773	  Dallas/Maxim DS1390/93/94 chips.
 774
 775	  This driver supports the RTC feature and trickle charging but not
 776	  other chip features such as alarms.
 777
 778	  This driver can also be built as a module. If so, the module
 779	  will be called rtc-ds1390.
 780
 781config RTC_DRV_MAX6916
 782	tristate "Maxim MAX6916"
 783	help
 784	  If you say yes here you will get support for the
 785	  Maxim MAX6916 SPI RTC chip.
 786
 787	  This driver only supports the RTC feature, and not other chip
 788	  features such as alarms.
 789
 790	  This driver can also be built as a module. If so, the module
 791	  will be called rtc-max6916.
 792
 793config RTC_DRV_R9701
 794	tristate "Epson RTC-9701JE"
 795	help
 796	  If you say yes here you will get support for the
 797	  Epson RTC-9701JE SPI RTC chip.
 798
 799	  This driver can also be built as a module. If so, the module
 800	  will be called rtc-r9701.
 801
 802config RTC_DRV_RX4581
 803	tristate "Epson RX-4581"
 804	help
 805	  If you say yes here you will get support for the Epson RX-4581.
 806
 807	  This driver can also be built as a module. If so the module
 808	  will be called rtc-rx4581.
 809
 810config RTC_DRV_RX6110
 811	tristate "Epson RX-6110"
 812	select REGMAP_SPI
 813	help
 814	  If you say yes here you will get support for the Epson RX-6610.
 815
 816	  This driver can also be built as a module. If so the module
 817	  will be called rtc-rx6110.
 818
 819config RTC_DRV_RS5C348
 820	tristate "Ricoh RS5C348A/B"
 821	help
 822	  If you say yes here you get support for the
 823	  Ricoh RS5C348A and RS5C348B RTC chips.
 824
 825	  This driver can also be built as a module. If so, the module
 826	  will be called rtc-rs5c348.
 827
 828config RTC_DRV_MAX6902
 829	tristate "Maxim MAX6902"
 830	help
 831	  If you say yes here you will get support for the
 832	  Maxim MAX6902 SPI RTC chip.
 833
 834	  This driver can also be built as a module. If so, the module
 835	  will be called rtc-max6902.
 836
 837config RTC_DRV_PCF2123
 838	tristate "NXP PCF2123"
 839	select REGMAP_SPI
 840	help
 841	  If you say yes here you get support for the NXP PCF2123
 842	  RTC chip.
 843
 844	  This driver can also be built as a module. If so, the module
 845	  will be called rtc-pcf2123.
 846
 847config RTC_DRV_MCP795
 848	tristate "Microchip MCP795"
 849	help
 850	  If you say yes here you will get support for the Microchip MCP795.
 851
 852	  This driver can also be built as a module. If so the module
 853	  will be called rtc-mcp795.
 854
 855endif # SPI_MASTER
 856
 857#
 858# Helper to resolve issues with configs that have SPI enabled but I2C
 859# modular.  See SND_SOC_I2C_AND_SPI for more information
 860#
 861config RTC_I2C_AND_SPI
 862	tristate
 863	default m if I2C=m
 864	default y if I2C=y
 865	default y if SPI_MASTER=y
 866
 867comment "SPI and I2C RTC drivers"
 868
 869config RTC_DRV_DS3232
 870	tristate "Dallas/Maxim DS3232/DS3234"
 871	depends on RTC_I2C_AND_SPI
 872	select REGMAP_I2C if I2C
 873	select REGMAP_SPI if SPI_MASTER
 874	help
 875	  If you say yes here you get support for Dallas Semiconductor
 876	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
 877	  with the device, the alarm functionality is supported.
 878
 879	  This driver can also be built as a module.  If so, the module
 880	  will be called rtc-ds3232.
 881
 882config RTC_DRV_DS3232_HWMON
 883	bool "HWMON support for Dallas/Maxim DS3232/DS3234"
 884	depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
 885	default y
 886	help
 887	  Say Y here if you want to expose temperature sensor data on
 888	  rtc-ds3232
 889
 890config RTC_DRV_PCF2127
 891	tristate "NXP PCF2127"
 892	depends on RTC_I2C_AND_SPI
 893	select REGMAP_I2C if I2C
 894	select REGMAP_SPI if SPI_MASTER
 895	select WATCHDOG_CORE if WATCHDOG
 896	help
 897	  If you say yes here you get support for the NXP PCF2127/29 RTC
 898	  chips with integrated quartz crystal for industrial applications.
 899	  Both chips also have watchdog timer and tamper switch detection
 900	  features.
 901
 902	  PCF2127 has an additional feature of 512 bytes battery backed
 903	  memory that's accessible using nvmem interface.
 904
 905	  This driver can also be built as a module. If so, the module
 906	  will be called rtc-pcf2127.
 907
 908config RTC_DRV_RV3029C2
 909	tristate "Micro Crystal RV3029/3049"
 910	depends on RTC_I2C_AND_SPI
 911	select REGMAP_I2C if I2C
 912	select REGMAP_SPI if SPI_MASTER
 913	help
 914	  If you say yes here you get support for the Micro Crystal
 915	  RV3029 and RV3049 RTC chips.
 916
 917	  This driver can also be built as a module. If so, the module
 918	  will be called rtc-rv3029c2.
 919
 920config RTC_DRV_RV3029_HWMON
 921	bool "HWMON support for RV3029/3049"
 922	depends on RTC_DRV_RV3029C2 && HWMON
 923	depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
 924	default y
 925	help
 926	  Say Y here if you want to expose temperature sensor data on
 927	  rtc-rv3029.
 928
 929comment "Platform RTC drivers"
 930
 931# this 'CMOS' RTC driver is arch dependent because it requires
 932# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
 933# global rtc_lock ... it's not yet just another platform_device.
 934
 935config RTC_DRV_CMOS
 936	tristate "PC-style 'CMOS'"
 937	depends on X86 || ARM || PPC || MIPS || SPARC64
 938	default y if X86
 939	select RTC_MC146818_LIB
 940	help
 941	  Say "yes" here to get direct support for the real time clock
 942	  found in every PC or ACPI-based system, and some other boards.
 943	  Specifically the original MC146818, compatibles like those in
 944	  PC south bridges, the DS12887 or M48T86, some multifunction
 945	  or LPC bus chips, and so on.
 946
 947	  Your system will need to define the platform device used by
 948	  this driver, otherwise it won't be accessible. This means
 949	  you can safely enable this driver if you don't know whether
 950	  or not your board has this kind of hardware.
 951
 952	  This driver can also be built as a module. If so, the module
 953	  will be called rtc-cmos.
 954
 955config RTC_DRV_ALPHA
 956	bool "Alpha PC-style CMOS"
 957	depends on ALPHA
 958	select RTC_MC146818_LIB
 959	default y
 960	help
 961	  Direct support for the real-time clock found on every Alpha
 962	  system, specifically MC146818 compatibles.  If in doubt, say Y.
 963
 964config RTC_DRV_VRTC
 965	tristate "Virtual RTC for Intel MID platforms"
 966	depends on X86_INTEL_MID
 967	default y if X86_INTEL_MID
 968
 969	help
 970	Say "yes" here to get direct support for the real time clock
 971	found on Moorestown platforms. The VRTC is a emulated RTC that
 972	derives its clock source from a real RTC in the PMIC. The MC146818
 973	style programming interface is mostly conserved, but any
 974	updates are done via IPC calls to the system controller FW.
 975
 976config RTC_DRV_DS1216
 977	tristate "Dallas DS1216"
 978	depends on SNI_RM
 979	help
 980	  If you say yes here you get support for the Dallas DS1216 RTC chips.
 981
 982config RTC_DRV_DS1286
 983	tristate "Dallas DS1286"
 984	depends on HAS_IOMEM
 985	help
 986	  If you say yes here you get support for the Dallas DS1286 RTC chips.
 987
 
 
 
 
 
 
 988config RTC_DRV_DS1511
 989	tristate "Dallas DS1511"
 990	depends on HAS_IOMEM
 991	help
 992	  If you say yes here you get support for the
 993	  Dallas DS1511 timekeeping/watchdog chip.
 994
 995	  This driver can also be built as a module. If so, the module
 996	  will be called rtc-ds1511.
 997
 998config RTC_DRV_DS1553
 999	tristate "Maxim/Dallas DS1553"
1000	depends on HAS_IOMEM
1001	help
1002	  If you say yes here you get support for the
1003	  Maxim/Dallas DS1553 timekeeping chip.
1004
1005	  This driver can also be built as a module. If so, the module
1006	  will be called rtc-ds1553.
1007
1008config RTC_DRV_DS1685_FAMILY
1009	tristate "Dallas/Maxim DS1685 Family"
1010	help
1011	  If you say yes here you get support for the Dallas/Maxim DS1685
1012	  family of real time chips.  This family includes the DS1685/DS1687,
1013	  DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
1014	  DS17885/DS17887 chips.
1015
1016	  This driver can also be built as a module. If so, the module
1017	  will be called rtc-ds1685.
1018
1019choice
1020	prompt "Subtype"
1021	depends on RTC_DRV_DS1685_FAMILY
1022	default RTC_DRV_DS1685
1023
1024config RTC_DRV_DS1685
1025	bool "DS1685/DS1687"
1026	help
1027	  This enables support for the Dallas/Maxim DS1685/DS1687 real time
1028	  clock chip.
1029
1030	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
1031	  systems, as well as EPPC-405-UC modules by electronic system design
1032	  GmbH.
1033
1034config RTC_DRV_DS1689
1035	bool "DS1689/DS1693"
1036	help
1037	  This enables support for the Dallas/Maxim DS1689/DS1693 real time
1038	  clock chip.
1039
1040	  This is an older RTC chip, supplanted by the DS1685/DS1687 above,
1041	  which supports a few minor features such as Vcc, Vbat, and Power
1042	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
1043
1044	  It also works for the even older DS1688/DS1691 RTC chips, which are
1045	  virtually the same and carry the same model number.  Both chips
1046	  have 114 bytes of user NVRAM.
1047
1048config RTC_DRV_DS17285
1049	bool "DS17285/DS17287"
1050	help
1051	  This enables support for the Dallas/Maxim DS17285/DS17287 real time
1052	  clock chip.
1053
1054	  This chip features 2kb of extended NV-SRAM.  It may possibly be
1055	  found in some SGI O2 systems (rare).
1056
1057config RTC_DRV_DS17485
1058	bool "DS17485/DS17487"
1059	help
1060	  This enables support for the Dallas/Maxim DS17485/DS17487 real time
1061	  clock chip.
1062
1063	  This chip features 4kb of extended NV-SRAM.
1064
1065config RTC_DRV_DS17885
1066	bool "DS17885/DS17887"
1067	help
1068	  This enables support for the Dallas/Maxim DS17885/DS17887 real time
1069	  clock chip.
1070
1071	  This chip features 8kb of extended NV-SRAM.
1072
1073endchoice
1074
1075config RTC_DRV_DS1742
1076	tristate "Maxim/Dallas DS1742/1743"
1077	depends on HAS_IOMEM
1078	help
1079	  If you say yes here you get support for the
1080	  Maxim/Dallas DS1742/1743 timekeeping chip.
1081
1082	  This driver can also be built as a module. If so, the module
1083	  will be called rtc-ds1742.
1084
1085config RTC_DRV_DS2404
1086	tristate "Maxim/Dallas DS2404"
1087	help
1088	  If you say yes here you get support for the
1089	  Dallas DS2404 RTC chip.
1090
1091	  This driver can also be built as a module. If so, the module
1092	  will be called rtc-ds2404.
1093
1094config RTC_DRV_DA9052
1095	tristate "Dialog DA9052/DA9053 RTC"
1096	depends on PMIC_DA9052
1097	help
1098	  Say y here to support the RTC driver for Dialog Semiconductor
1099	  DA9052-BC and DA9053-AA/Bx PMICs.
1100
1101config RTC_DRV_DA9055
1102	tristate "Dialog Semiconductor DA9055 RTC"
1103	depends on MFD_DA9055
1104	help
1105	  If you say yes here you will get support for the
1106	  RTC of the Dialog DA9055 PMIC.
1107
1108	  This driver can also be built as a module. If so, the module
1109	  will be called rtc-da9055
1110
1111config RTC_DRV_DA9063
1112	tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1113	depends on MFD_DA9063 || MFD_DA9062
1114	help
1115	  If you say yes here you will get support for the RTC subsystem
1116	  for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
1117
1118	  This driver can also be built as a module. If so, the module
1119	  will be called "rtc-da9063".
1120
1121config RTC_DRV_EFI
1122	tristate "EFI RTC"
1123	depends on EFI && !X86
1124	help
1125	  If you say yes here you will get support for the EFI
1126	  Real Time Clock.
1127
1128	  This driver can also be built as a module. If so, the module
1129	  will be called rtc-efi.
1130
1131config RTC_DRV_STK17TA8
1132	tristate "Simtek STK17TA8"
1133	depends on HAS_IOMEM
1134	help
1135	  If you say yes here you get support for the
1136	  Simtek STK17TA8 timekeeping chip.
1137
1138	  This driver can also be built as a module. If so, the module
1139	  will be called rtc-stk17ta8.
1140
1141config RTC_DRV_M48T86
1142	tristate "ST M48T86/Dallas DS12887"
1143	help
1144	  If you say Y here you will get support for the
1145	  ST M48T86 and Dallas DS12887 RTC chips.
1146
1147	  This driver can also be built as a module. If so, the module
1148	  will be called rtc-m48t86.
1149
1150config RTC_DRV_M48T35
1151	tristate "ST M48T35"
1152	depends on HAS_IOMEM
1153	help
1154	  If you say Y here you will get support for the
1155	  ST M48T35 RTC chip.
1156
1157	  This driver can also be built as a module, if so, the module
1158	  will be called "rtc-m48t35".
1159
1160config RTC_DRV_M48T59
1161	tristate "ST M48T59/M48T08/M48T02"
1162	depends on HAS_IOMEM
1163	help
1164	  If you say Y here you will get support for the
1165	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1166
1167	  These chips are usually found in Sun SPARC and UltraSPARC
1168	  workstations.
1169
1170	  This driver can also be built as a module, if so, the module
1171	  will be called "rtc-m48t59".
1172
1173config RTC_DRV_MSM6242
1174	tristate "Oki MSM6242"
1175	depends on HAS_IOMEM
1176	help
1177	  If you say yes here you get support for the Oki MSM6242
1178	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1179
1180	  This driver can also be built as a module. If so, the module
1181	  will be called rtc-msm6242.
1182
1183config RTC_DRV_BQ4802
1184	tristate "TI BQ4802"
1185	depends on HAS_IOMEM
1186	help
1187	  If you say Y here you will get support for the TI
1188	  BQ4802 RTC chip.
1189
1190	  This driver can also be built as a module. If so, the module
1191	  will be called rtc-bq4802.
1192
1193config RTC_DRV_RP5C01
1194	tristate "Ricoh RP5C01"
1195	depends on HAS_IOMEM
1196	help
1197	  If you say yes here you get support for the Ricoh RP5C01
1198	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1199	  and A4000).
1200
1201	  This driver can also be built as a module. If so, the module
1202	  will be called rtc-rp5c01.
1203
1204config RTC_DRV_V3020
1205	tristate "EM Microelectronic V3020"
1206	help
1207	  If you say yes here you will get support for the
1208	  EM Microelectronic v3020 RTC chip.
1209
1210	  This driver can also be built as a module. If so, the module
1211	  will be called rtc-v3020.
1212
1213config RTC_DRV_WM831X
1214	tristate "Wolfson Microelectronics WM831x RTC"
1215	depends on MFD_WM831X
1216	help
1217	  If you say yes here you will get support for the RTC subsystem
1218	  of the Wolfson Microelectronics WM831X series PMICs.
1219
1220	  This driver can also be built as a module. If so, the module
1221	  will be called "rtc-wm831x".
1222
1223config RTC_DRV_WM8350
1224	tristate "Wolfson Microelectronics WM8350 RTC"
1225	depends on MFD_WM8350
1226	help
1227	  If you say yes here you will get support for the RTC subsystem
1228	  of the Wolfson Microelectronics WM8350.
1229
1230	  This driver can also be built as a module. If so, the module
1231	  will be called "rtc-wm8350".
1232
1233config RTC_DRV_SC27XX
1234	tristate "Spreadtrum SC27xx RTC"
1235	depends on MFD_SC27XX_PMIC || COMPILE_TEST
1236	help
1237	  If you say Y here you will get support for the RTC subsystem
1238	  of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs
1239	  includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.
1240
1241	  This driver can also be built as a module. If so, the module
1242	  will be called rtc-sc27xx.
1243
1244config RTC_DRV_SPEAR
1245	tristate "SPEAR ST RTC"
1246	depends on PLAT_SPEAR || COMPILE_TEST
1247	default y
1248	help
1249	 If you say Y here you will get support for the RTC found on
1250	 spear
1251
1252config RTC_DRV_PCF50633
1253	depends on MFD_PCF50633
1254	tristate "NXP PCF50633 RTC"
1255	help
1256	  If you say yes here you get support for the RTC subsystem of the
1257	  NXP PCF50633 used in embedded systems.
1258
1259config RTC_DRV_AB3100
1260	tristate "ST-Ericsson AB3100 RTC"
1261	depends on AB3100_CORE
1262	default y if AB3100_CORE
1263	help
1264	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1265	  support. This chip contains a battery- and capacitor-backed RTC.
1266
1267config RTC_DRV_AB8500
1268	tristate "ST-Ericsson AB8500 RTC"
1269	depends on AB8500_CORE
1270	select RTC_INTF_DEV
1271	select RTC_INTF_DEV_UIE_EMUL
1272	help
1273	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1274	  support. This chip contains a battery- and capacitor-backed RTC.
1275
1276config RTC_DRV_OPAL
1277	tristate "IBM OPAL RTC driver"
1278	depends on PPC_POWERNV
1279	default y
1280	help
1281	  If you say yes here you get support for the PowerNV platform RTC
1282	  driver based on OPAL interfaces.
1283
1284	  This driver can also be built as a module. If so, the module
1285	  will be called rtc-opal.
1286
1287config RTC_DRV_ZYNQMP
1288	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1289	depends on OF
1290	help
1291	  If you say yes here you get support for the RTC controller found on
1292	  Xilinx Zynq Ultrascale+ MPSoC.
1293
1294config RTC_DRV_CROS_EC
1295	tristate "Chrome OS EC RTC driver"
1296	depends on CROS_EC
1297	help
1298	  If you say yes here you will get support for the
1299	  Chrome OS Embedded Controller's RTC.
1300
1301	  This driver can also be built as a module. If so, the module
1302	  will be called rtc-cros-ec.
1303
1304comment "on-CPU RTC drivers"
1305
1306config RTC_DRV_ASM9260
1307	tristate "Alphascale asm9260 RTC"
1308	depends on MACH_ASM9260 || COMPILE_TEST
1309	help
1310	  If you say yes here you get support for the RTC on the
1311	  Alphascale asm9260 SoC.
1312
1313	  This driver can also be built as a module. If so, the module
1314	  will be called rtc-asm9260.
1315
1316config RTC_DRV_DAVINCI
1317	tristate "TI DaVinci RTC"
1318	depends on ARCH_DAVINCI_DM365 || COMPILE_TEST
1319	help
1320	  If you say yes here you get support for the RTC on the
1321	  DaVinci platforms (DM365).
1322
1323	  This driver can also be built as a module. If so, the module
1324	  will be called rtc-davinci.
1325
1326config RTC_DRV_DIGICOLOR
1327	tristate "Conexant Digicolor RTC"
1328	depends on ARCH_DIGICOLOR || COMPILE_TEST
1329	help
1330	  If you say yes here you get support for the RTC on Conexant
1331	  Digicolor platforms. This currently includes the CX92755 SoC.
1332
1333	  This driver can also be built as a module. If so, the module
1334	  will be called rtc-digicolor.
1335
1336config RTC_DRV_IMXDI
1337	tristate "Freescale IMX DryIce Real Time Clock"
1338	depends on ARCH_MXC
 
1339	help
1340	   Support for Freescale IMX DryIce RTC
1341
1342	   This driver can also be built as a module, if so, the module
1343	   will be called "rtc-imxdi".
1344
1345config RTC_DRV_FSL_FTM_ALARM
1346	tristate "Freescale FlexTimer alarm timer"
1347	depends on ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST
1348	help
1349	   For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A,
1350	   LS1088A, LS208xA, we can use FTM as the wakeup source.
1351
1352	   Say y here to enable FTM alarm support. The FTM alarm provides
1353	   alarm functions for wakeup system from deep sleep.
1354
1355	   This driver can also be built as a module, if so, the module
1356	   will be called "rtc-fsl-ftm-alarm".
1357
1358config RTC_DRV_MESON
1359	tristate "Amlogic Meson RTC"
1360	depends on (ARM && ARCH_MESON) || COMPILE_TEST
1361	select REGMAP_MMIO
1362	help
1363	   Support for the RTC block on the Amlogic Meson6, Meson8, Meson8b
1364	   and Meson8m2 SoCs.
1365
1366	   This driver can also be built as a module, if so, the module
1367	   will be called "rtc-meson".
1368
1369config RTC_DRV_MESON_VRTC
1370	tristate "Amlogic Meson Virtual RTC"
1371	depends on ARCH_MESON || COMPILE_TEST
1372	default m if ARCH_MESON
1373	help
1374	  If you say yes here you will get support for the
1375	  Virtual RTC of Amlogic SoCs.
1376
1377	  This driver can also be built as a module. If so, the module
1378	  will be called rtc-meson-vrtc.
1379
1380config RTC_DRV_OMAP
1381	tristate "TI OMAP Real Time Clock"
1382	depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
1383	depends on OF
1384	depends on PINCTRL
1385	select GENERIC_PINCONF
1386	help
1387	  Say "yes" here to support the on chip real time clock
1388	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1389
1390	  This driver can also be built as a module, if so, module
1391	  will be called rtc-omap.
1392
1393config HAVE_S3C_RTC
1394	bool
1395	help
1396	  This will include RTC support for Samsung SoCs. If
1397	  you want to include RTC support for any machine, kindly
1398	  select this in the respective mach-XXXX/Kconfig file.
1399
1400config RTC_DRV_S3C
1401	tristate "Samsung S3C series SoC RTC"
1402	depends on ARCH_S3C64XX || HAVE_S3C_RTC || COMPILE_TEST
1403	help
1404	  RTC (Realtime Clock) driver for the clock inbuilt into the
1405	  Samsung S3C24XX series of SoCs. This can provide periodic
1406	  interrupt rates from 1Hz to 64Hz for user programs, and
1407	  wakeup from Alarm.
1408
1409	  The driver currently supports the common features on all the
1410	  S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
1411	  and S3C2442.
1412
1413	  This driver can also be build as a module. If so, the module
1414	  will be called rtc-s3c.
1415
1416config RTC_DRV_EP93XX
1417	tristate "Cirrus Logic EP93XX"
1418	depends on ARCH_EP93XX || COMPILE_TEST
1419	help
1420	  If you say yes here you get support for the
1421	  RTC embedded in the Cirrus Logic EP93XX processors.
1422
1423	  This driver can also be built as a module. If so, the module
1424	  will be called rtc-ep93xx.
1425
1426config RTC_DRV_SA1100
1427	tristate "SA11x0/PXA2xx/PXA910"
1428	depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
1429	help
1430	  If you say Y here you will get access to the real time clock
1431	  built into your SA11x0 or PXA2xx CPU.
1432
1433	  To compile this driver as a module, choose M here: the
1434	  module will be called rtc-sa1100.
1435
1436config RTC_DRV_SH
1437	tristate "SuperH On-Chip RTC"
1438	depends on SUPERH || ARCH_RENESAS
1439	help
1440	  Say Y here to enable support for the on-chip RTC found in
1441	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1442
1443	  To compile this driver as a module, choose M here: the
1444	  module will be called rtc-sh.
1445
1446config RTC_DRV_VR41XX
1447	tristate "NEC VR41XX"
1448	depends on CPU_VR41XX || COMPILE_TEST
1449	help
1450	  If you say Y here you will get access to the real time clock
1451	  built into your NEC VR41XX CPU.
1452
1453	  To compile this driver as a module, choose M here: the
1454	  module will be called rtc-vr41xx.
1455
1456config RTC_DRV_PL030
1457	tristate "ARM AMBA PL030 RTC"
1458	depends on ARM_AMBA
1459	help
1460	  If you say Y here you will get access to ARM AMBA
1461	  PrimeCell PL030 RTC found on certain ARM SOCs.
1462
1463	  To compile this driver as a module, choose M here: the
1464	  module will be called rtc-pl030.
1465
1466config RTC_DRV_PL031
1467	tristate "ARM AMBA PL031 RTC"
1468	depends on ARM_AMBA
1469	help
1470	  If you say Y here you will get access to ARM AMBA
1471	  PrimeCell PL031 RTC found on certain ARM SOCs.
1472
1473	  To compile this driver as a module, choose M here: the
1474	  module will be called rtc-pl031.
1475
 
 
 
 
 
 
 
1476config RTC_DRV_AT91RM9200
1477	tristate "AT91RM9200 or some AT91SAM9 RTC"
1478	depends on ARCH_AT91 || COMPILE_TEST
1479	depends on OF
1480	help
1481	  Driver for the internal RTC (Realtime Clock) module found on
1482	  Atmel AT91RM9200's and some  AT91SAM9 chips. On AT91SAM9 chips
1483	  this is powered by the backup power supply.
1484
1485config RTC_DRV_AT91SAM9
1486	tristate "AT91SAM9 RTT as RTC"
1487	depends on ARCH_AT91 || COMPILE_TEST
1488	depends on OF && HAS_IOMEM
1489	select MFD_SYSCON
1490	help
1491	  Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
1492	  can be used as an RTC thanks to the backup power supply (e.g. a
1493	  small coin cell battery) which keeps this block and the GPBR
1494	  (General Purpose Backup Registers) block powered when the device
1495	  is shutdown.
1496	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1497	  probably want to use the real RTC block instead of the "RTT as an
1498	  RTC" driver.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1499
1500config RTC_DRV_AU1XXX
1501	tristate "Au1xxx Counter0 RTC support"
1502	depends on MIPS_ALCHEMY
1503	help
1504	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1505	  counter) to be used as a RTC.
1506
1507	  This driver can also be built as a module. If so, the module
1508	  will be called rtc-au1xxx.
1509
 
 
 
 
 
 
 
 
 
 
1510config RTC_DRV_RS5C313
1511	tristate "Ricoh RS5C313"
1512	depends on SH_LANDISK
1513	help
1514	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1515
1516config RTC_DRV_GENERIC
1517	tristate "Generic RTC support"
1518	# Please consider writing a new RTC driver instead of using the generic
1519	# RTC abstraction
1520	depends on PARISC || M68K || PPC || SUPERH || COMPILE_TEST
1521	help
1522	  Say Y or M here to enable RTC support on systems using the generic
1523	  RTC abstraction. If you do not know what you are doing, you should
1524	  just say Y.
1525
1526config RTC_DRV_PXA
1527	tristate "PXA27x/PXA3xx"
1528	depends on ARCH_PXA
1529	select RTC_DRV_SA1100
1530	help
1531	 If you say Y here you will get access to the real time clock
1532	 built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1533	 consisting of an SA1100 compatible RTC and the extended PXA RTC.
1534
1535	 This RTC driver uses PXA RTC registers available since pxa27x
1536	 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
1537
1538config RTC_DRV_VT8500
1539	tristate "VIA/WonderMedia 85xx SoC RTC"
1540	depends on ARCH_VT8500 || COMPILE_TEST
1541	help
1542	  If you say Y here you will get access to the real time clock
1543	  built into your VIA VT8500 SoC or its relatives.
1544
1545
1546config RTC_DRV_SUN4V
1547	bool "SUN4V Hypervisor RTC"
1548	depends on SPARC64
1549	help
1550	  If you say Y here you will get support for the Hypervisor
1551	  based RTC on SUN4V systems.
1552
1553config RTC_DRV_SUN6I
1554	bool "Allwinner A31 RTC"
1555	default MACH_SUN6I || MACH_SUN8I
1556	depends on COMMON_CLK
1557	depends on ARCH_SUNXI || COMPILE_TEST
1558	help
1559	  If you say Y here you will get support for the RTC found in
1560	  some Allwinner SoCs like the A31 or the A64.
1561
1562config RTC_DRV_SUNXI
1563	tristate "Allwinner sun4i/sun7i RTC"
1564	depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
1565	help
1566	  If you say Y here you will get support for the RTC found on
1567	  Allwinner A10/A20.
1568
1569config RTC_DRV_STARFIRE
1570	bool "Starfire RTC"
1571	depends on SPARC64
1572	help
1573	  If you say Y here you will get support for the RTC found on
1574	  Starfire systems.
1575
1576config RTC_DRV_TX4939
1577	tristate "TX4939 SoC"
1578	depends on SOC_TX4939 || COMPILE_TEST
1579	help
1580	  Driver for the internal RTC (Realtime Clock) module found on
1581	  Toshiba TX4939 SoC.
1582
1583config RTC_DRV_MV
1584	tristate "Marvell SoC RTC"
1585	depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
1586	help
1587	  If you say yes here you will get support for the in-chip RTC
1588	  that can be found in some of Marvell's SoC devices, such as
1589	  the Kirkwood 88F6281 and 88F6192.
1590
1591	  This driver can also be built as a module. If so, the module
1592	  will be called rtc-mv.
1593
1594config RTC_DRV_ARMADA38X
1595	tristate "Armada 38x Marvell SoC RTC"
1596	depends on ARCH_MVEBU || COMPILE_TEST
1597	help
1598	  If you say yes here you will get support for the in-chip RTC
1599	  that can be found in the Armada 38x Marvell's SoC device
1600
1601	  This driver can also be built as a module. If so, the module
1602	  will be called armada38x-rtc.
1603
1604config RTC_DRV_CADENCE
1605	tristate "Cadence RTC driver"
1606	depends on OF && HAS_IOMEM
1607	help
1608	  If you say Y here you will get access to Cadence RTC IP
1609	  found on certain SOCs.
1610
1611	  To compile this driver as a module, choose M here: the
1612	  module will be called rtc-cadence.
1613
1614config RTC_DRV_FTRTC010
1615	tristate "Faraday Technology FTRTC010 RTC"
1616	depends on HAS_IOMEM
1617	default ARCH_GEMINI
1618	help
1619	  If you say Y here you will get support for the
1620	  Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
1621
1622	  This driver can also be built as a module. If so, the module
1623	  will be called rtc-ftrtc010.
1624
1625config RTC_DRV_PS3
1626	tristate "PS3 RTC"
1627	depends on PPC_PS3
1628	help
1629	  If you say yes here you will get support for the RTC on PS3.
1630
1631	  This driver can also be built as a module. If so, the module
1632	  will be called rtc-ps3.
1633
1634config RTC_DRV_COH901331
1635	tristate "ST-Ericsson COH 901 331 RTC"
1636	depends on ARCH_U300 || COMPILE_TEST
1637	help
1638	  If you say Y here you will get access to ST-Ericsson
1639	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
1640	  Platforms.
1641
1642	  This driver can also be built as a module. If so, the module
1643	  will be called "rtc-coh901331".
1644
1645
1646config RTC_DRV_STMP
1647	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1648	depends on ARCH_MXS || COMPILE_TEST
1649	select STMP_DEVICE
1650	help
1651	  If you say yes here you will get support for the onboard
1652	  STMP3xxx/i.MX23/i.MX28 RTC.
1653
1654	  This driver can also be built as a module. If so, the module
1655	  will be called rtc-stmp3xxx.
1656
1657config RTC_DRV_PCAP
1658	tristate "PCAP RTC"
1659	depends on EZX_PCAP
1660	help
1661	  If you say Y here you will get support for the RTC found on
1662	  the PCAP2 ASIC used on some Motorola phones.
1663
1664config RTC_DRV_MC13XXX
1665	depends on MFD_MC13XXX
1666	tristate "Freescale MC13xxx RTC"
1667	help
1668	  This enables support for the RTCs found on Freescale's PMICs
1669	  MC13783 and MC13892.
1670
1671config RTC_DRV_MPC5121
1672	tristate "Freescale MPC5121 built-in RTC"
1673	depends on PPC_MPC512x || PPC_MPC52xx
1674	help
1675	  If you say yes here you will get support for the
1676	  built-in RTC on MPC5121 or on MPC5200.
1677
1678	  This driver can also be built as a module. If so, the module
1679	  will be called rtc-mpc5121.
1680
1681config RTC_DRV_JZ4740
1682	tristate "Ingenic JZ4740 SoC"
1683	depends on MIPS || COMPILE_TEST
1684	depends on OF
1685	help
1686	  If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1687	  controllers.
1688
1689	  This driver can also be built as a module. If so, the module
1690	  will be called rtc-jz4740.
1691
1692config RTC_DRV_LPC24XX
1693	tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1694	depends on ARCH_LPC18XX || COMPILE_TEST
1695	depends on OF && HAS_IOMEM
1696	help
1697	  This enables support for the NXP RTC found which can be found on
1698	  NXP LPC178x/18xx/408x/43xx devices.
1699
1700	  If you have one of the devices above enable this driver to use
1701	  the hardware RTC. This driver can also be built as a module. If
1702	  so, the module will be called rtc-lpc24xx.
1703
1704config RTC_DRV_LPC32XX
1705	depends on ARCH_LPC32XX || COMPILE_TEST
1706	tristate "NXP LPC32XX RTC"
1707	help
1708	  This enables support for the NXP RTC in the LPC32XX
1709
1710	  This driver can also be built as a module. If so, the module
1711	  will be called rtc-lpc32xx.
1712
1713config RTC_DRV_PM8XXX
1714	tristate "Qualcomm PMIC8XXX RTC"
1715	depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
1716	help
1717	  If you say yes here you get support for the
1718	  Qualcomm PMIC8XXX RTC.
1719
1720	  To compile this driver as a module, choose M here: the
1721	  module will be called rtc-pm8xxx.
1722
1723config RTC_DRV_TEGRA
1724	tristate "NVIDIA Tegra Internal RTC driver"
1725	depends on ARCH_TEGRA || COMPILE_TEST
1726	help
1727	  If you say yes here you get support for the
1728	  Tegra 200 series internal RTC module.
1729
1730	  This drive can also be built as a module. If so, the module
1731	  will be called rtc-tegra.
1732
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1733config RTC_DRV_LOONGSON1
1734	tristate "loongson1 RTC support"
1735	depends on MACH_LOONGSON32
1736	help
1737	  This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
1738	  counter) to be used as a RTC.
1739
1740	  This driver can also be built as a module. If so, the module
1741	  will be called rtc-ls1x.
1742
1743config RTC_DRV_MXC
1744	tristate "Freescale MXC Real Time Clock"
1745	depends on ARCH_MXC
 
1746	help
1747	   If you say yes here you get support for the Freescale MXC
1748	   RTC module.
1749
1750	   This driver can also be built as a module, if so, the module
1751	   will be called "rtc-mxc".
1752
1753config RTC_DRV_MXC_V2
1754	tristate "Freescale MXC Real Time Clock for i.MX53"
1755	depends on ARCH_MXC
1756	help
1757	   If you say yes here you get support for the Freescale MXC
1758	   SRTC module in i.MX53 processor.
1759
1760	   This driver can also be built as a module, if so, the module
1761	   will be called "rtc-mxc_v2".
1762
1763config RTC_DRV_SNVS
1764	tristate "Freescale SNVS RTC support"
1765	select REGMAP_MMIO
1766	depends on ARCH_MXC || COMPILE_TEST
1767	depends on HAS_IOMEM
1768	depends on OF
1769	help
1770	   If you say yes here you get support for the Freescale SNVS
1771	   Low Power (LP) RTC module.
1772
1773	   This driver can also be built as a module, if so, the module
1774	   will be called "rtc-snvs".
1775
1776config RTC_DRV_IMX_SC
1777	depends on IMX_SCU
1778	depends on HAVE_ARM_SMCCC
1779	tristate "NXP i.MX System Controller RTC support"
1780	help
1781	   If you say yes here you get support for the NXP i.MX System
1782	   Controller RTC module.
1783
1784config RTC_DRV_SIRFSOC
1785	tristate "SiRFSOC RTC"
1786	depends on ARCH_SIRF
1787	help
1788	  Say "yes" here to support the real time clock on SiRF SOC chips.
1789	  This driver can also be built as a module called rtc-sirfsoc.
1790
1791config RTC_DRV_ST_LPC
1792	tristate "STMicroelectronics LPC RTC"
1793	depends on ARCH_STI
1794	depends on OF
1795	help
1796	  Say Y here to include STMicroelectronics Low Power Controller
1797	  (LPC) based RTC support.
1798
1799	  To compile this driver as a module, choose M here: the
1800	  module will be called rtc-st-lpc.
1801
1802config RTC_DRV_MOXART
1803	tristate "MOXA ART RTC"
1804	depends on ARCH_MOXART || COMPILE_TEST
1805	help
1806	   If you say yes here you get support for the MOXA ART
1807	   RTC module.
1808
1809	   This driver can also be built as a module. If so, the module
1810	   will be called rtc-moxart
1811
1812config RTC_DRV_MT2712
1813	tristate "MediaTek MT2712 SoC based RTC"
1814	depends on ARCH_MEDIATEK || COMPILE_TEST
1815	help
1816	  This enables support for the real time clock built in the MediaTek
1817	  SoCs for MT2712.
1818
1819	  This drive can also be built as a module. If so, the module
1820	  will be called rtc-mt2712.
1821
1822config RTC_DRV_MT6397
1823	tristate "MediaTek PMIC based RTC"
1824	depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
1825	help
1826	  This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
1827	  MT6397 PMIC. You should enable MT6397 PMIC MFD before select
1828	  MediaTek(R) RTC driver.
1829
1830	  If you want to use MediaTek(R) RTC interface, select Y or M here.
1831
1832config RTC_DRV_MT7622
1833	tristate "MediaTek SoC based RTC"
1834	depends on ARCH_MEDIATEK || COMPILE_TEST
1835	help
1836	  This enables support for the real time clock built in the MediaTek
1837	  SoCs.
1838
1839	  This drive can also be built as a module. If so, the module
1840	  will be called rtc-mt7622.
1841
1842config RTC_DRV_XGENE
1843	tristate "APM X-Gene RTC"
1844	depends on HAS_IOMEM
1845	depends on ARCH_XGENE || COMPILE_TEST
1846	help
1847	  If you say yes here you get support for the APM X-Gene SoC real time
1848	  clock.
1849
1850	  This driver can also be built as a module, if so, the module
1851	  will be called "rtc-xgene".
1852
1853config RTC_DRV_PIC32
1854	tristate "Microchip PIC32 RTC"
1855	depends on MACH_PIC32
1856	default y
1857	help
1858	   If you say yes here you get support for the PIC32 RTC module.
1859
1860	   This driver can also be built as a module. If so, the module
1861	   will be called rtc-pic32
1862
1863config RTC_DRV_R7301
1864	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1865	select REGMAP_MMIO
1866	depends on OF && HAS_IOMEM
1867	help
1868	   If you say yes here you get support for the EPSON TOYOCOM
1869	   RTC-7301SF/DG chips.
1870
1871	   This driver can also be built as a module. If so, the module
1872	   will be called rtc-r7301.
1873
1874config RTC_DRV_STM32
1875	tristate "STM32 RTC"
1876	select REGMAP_MMIO
1877	depends on ARCH_STM32 || COMPILE_TEST
1878	help
1879	   If you say yes here you get support for the STM32 On-Chip
1880	   Real Time Clock.
1881
1882	   This driver can also be built as a module, if so, the module
1883	   will be called "rtc-stm32".
1884
1885config RTC_DRV_CPCAP
1886	depends on MFD_CPCAP
1887	tristate "Motorola CPCAP RTC"
1888	help
1889	   Say y here for CPCAP rtc found on some Motorola phones
1890	   and tablets such as Droid 4.
1891
1892config RTC_DRV_RTD119X
1893	bool "Realtek RTD129x RTC"
1894	depends on ARCH_REALTEK || COMPILE_TEST
1895	default ARCH_REALTEK
1896	help
1897	  If you say yes here, you get support for the RTD1295 SoC
1898	  Real Time Clock.
1899
1900config RTC_DRV_ASPEED
1901	tristate "ASPEED RTC"
1902	depends on OF
1903	depends on ARCH_ASPEED || COMPILE_TEST
1904	help
1905	  If you say yes here you get support for the ASPEED BMC SoC real time
1906	  clocks.
1907
1908	  This driver can also be built as a module, if so, the module
1909	  will be called "rtc-aspeed".
1910
1911comment "HID Sensor RTC drivers"
1912
1913config RTC_DRV_HID_SENSOR_TIME
1914	tristate "HID Sensor Time"
1915	depends on USB_HID
1916	depends on HID_SENSOR_HUB && IIO
1917	select HID_SENSOR_IIO_COMMON
1918	help
1919	  Say yes here to build support for the HID Sensors of type Time.
1920	  This drivers makes such sensors available as RTCs.
1921
1922	  If this driver is compiled as a module, it will be named
1923	  rtc-hid-sensor-time.
1924
1925config RTC_DRV_GOLDFISH
1926	tristate "Goldfish Real Time Clock"
1927	depends on OF && HAS_IOMEM
1928	depends on GOLDFISH || COMPILE_TEST
1929	help
1930	  Say yes to enable RTC driver for the Goldfish based virtual platform.
1931
1932	  Goldfish is a code name for the virtual platform developed by Google
1933	  for Android emulation.
1934
1935config RTC_DRV_WILCO_EC
1936	tristate "Wilco EC RTC"
1937	depends on WILCO_EC
1938	default m
1939	help
1940	  If you say yes here, you get read/write support for the Real Time
1941	  Clock on the Wilco Embedded Controller (Wilco is a kind of Chromebook)
1942
1943	  This can also be built as a module. If so, the module will
1944	  be named "rtc_wilco_ec".
1945
1946endif # RTC_CLASS