Kconfig 34 KB

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  1. #
  2. # RTC class/drivers configuration
  3. #
  4. config RTC_LIB
  5. bool
  6. menuconfig RTC_CLASS
  7. bool "Real Time Clock"
  8. default n
  9. depends on !S390 && !UML
  10. select RTC_LIB
  11. help
  12. Generic RTC class support. If you say yes here, you will
  13. be allowed to plug one or more RTCs to your system. You will
  14. probably want to enable one or more of the interfaces below.
  15. if RTC_CLASS
  16. config RTC_HCTOSYS
  17. bool "Set system time from RTC on startup and resume"
  18. default y
  19. help
  20. If you say yes here, the system time (wall clock) will be set using
  21. the value read from a specified RTC device. This is useful to avoid
  22. unnecessary fsck runs at boot time, and to network better.
  23. config RTC_HCTOSYS_DEVICE
  24. string "RTC used to set the system time"
  25. depends on RTC_HCTOSYS = y
  26. default "rtc0"
  27. help
  28. The RTC device that will be used to (re)initialize the system
  29. clock, usually rtc0. Initialization is done when the system
  30. starts up, and when it resumes from a low power state. This
  31. device should record time in UTC, since the kernel won't do
  32. timezone correction.
  33. The driver for this RTC device must be loaded before late_initcall
  34. functions run, so it must usually be statically linked.
  35. This clock should be battery-backed, so that it reads the correct
  36. time when the system boots from a power-off state. Otherwise, your
  37. system will need an external clock source (like an NTP server).
  38. If the clock you specify here is not battery backed, it may still
  39. be useful to reinitialize system time when resuming from system
  40. sleep states. Do not specify an RTC here unless it stays powered
  41. during all this system's supported sleep states.
  42. config RTC_DEBUG
  43. bool "RTC debug support"
  44. help
  45. Say yes here to enable debugging support in the RTC framework
  46. and individual RTC drivers.
  47. comment "RTC interfaces"
  48. config RTC_INTF_SYSFS
  49. boolean "/sys/class/rtc/rtcN (sysfs)"
  50. depends on SYSFS
  51. default RTC_CLASS
  52. help
  53. Say yes here if you want to use your RTCs using sysfs interfaces,
  54. /sys/class/rtc/rtc0 through /sys/.../rtcN.
  55. If unsure, say Y.
  56. config RTC_INTF_PROC
  57. boolean "/proc/driver/rtc (procfs for rtcN)"
  58. depends on PROC_FS
  59. default RTC_CLASS
  60. help
  61. Say yes here if you want to use your system clock RTC through
  62. the proc interface, /proc/driver/rtc.
  63. Other RTCs will not be available through that API.
  64. If there is no RTC for the system clock, then the first RTC(rtc0)
  65. is used by default.
  66. If unsure, say Y.
  67. config RTC_INTF_DEV
  68. boolean "/dev/rtcN (character devices)"
  69. default RTC_CLASS
  70. help
  71. Say yes here if you want to use your RTCs using the /dev
  72. interfaces, which "udev" sets up as /dev/rtc0 through
  73. /dev/rtcN.
  74. You may want to set up a symbolic link so one of these
  75. can be accessed as /dev/rtc, which is a name
  76. expected by "hwclock" and some other programs. Recent
  77. versions of "udev" are known to set up the symlink for you.
  78. If unsure, say Y.
  79. config RTC_INTF_DEV_UIE_EMUL
  80. bool "RTC UIE emulation on dev interface"
  81. depends on RTC_INTF_DEV
  82. help
  83. Provides an emulation for RTC_UIE if the underlying rtc chip
  84. driver does not expose RTC_UIE ioctls. Those requests generate
  85. once-per-second update interrupts, used for synchronization.
  86. The emulation code will read the time from the hardware
  87. clock several times per second, please enable this option
  88. only if you know that you really need it.
  89. config RTC_DRV_TEST
  90. tristate "Test driver/device"
  91. help
  92. If you say yes here you get support for the
  93. RTC test driver. It's a software RTC which can be
  94. used to test the RTC subsystem APIs. It gets
  95. the time from the system clock.
  96. You want this driver only if you are doing development
  97. on the RTC subsystem. Please read the source code
  98. for further details.
  99. This driver can also be built as a module. If so, the module
  100. will be called rtc-test.
  101. comment "I2C RTC drivers"
  102. depends on I2C
  103. if I2C
  104. config RTC_DRV_88PM860X
  105. tristate "Marvell 88PM860x"
  106. depends on I2C && MFD_88PM860X
  107. help
  108. If you say yes here you get support for RTC function in Marvell
  109. 88PM860x chips.
  110. This driver can also be built as a module. If so, the module
  111. will be called rtc-88pm860x.
  112. config RTC_DRV_88PM80X
  113. tristate "Marvell 88PM80x"
  114. depends on I2C && MFD_88PM800
  115. help
  116. If you say yes here you get support for RTC function in Marvell
  117. 88PM80x chips.
  118. This driver can also be built as a module. If so, the module
  119. will be called rtc-88pm80x.
  120. config RTC_DRV_DS1307
  121. tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
  122. help
  123. If you say yes here you get support for various compatible RTC
  124. chips (often with battery backup) connected with I2C. This driver
  125. should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
  126. EPSON RX-8025 and probably other chips. In some cases the RTC
  127. must already have been initialized (by manufacturing or a
  128. bootloader).
  129. The first seven registers on these chips hold an RTC, and other
  130. registers may add features such as NVRAM, a trickle charger for
  131. the RTC/NVRAM backup power, and alarms. NVRAM is visible in
  132. sysfs, but other chip features may not be available.
  133. This driver can also be built as a module. If so, the module
  134. will be called rtc-ds1307.
  135. config RTC_DRV_DS1374
  136. tristate "Dallas/Maxim DS1374"
  137. depends on I2C
  138. help
  139. If you say yes here you get support for Dallas Semiconductor
  140. DS1374 real-time clock chips. If an interrupt is associated
  141. with the device, the alarm functionality is supported.
  142. This driver can also be built as a module. If so, the module
  143. will be called rtc-ds1374.
  144. config RTC_DRV_DS1672
  145. tristate "Dallas/Maxim DS1672"
  146. help
  147. If you say yes here you get support for the
  148. Dallas/Maxim DS1672 timekeeping chip.
  149. This driver can also be built as a module. If so, the module
  150. will be called rtc-ds1672.
  151. config RTC_DRV_DS3232
  152. tristate "Dallas/Maxim DS3232"
  153. depends on I2C
  154. help
  155. If you say yes here you get support for Dallas Semiconductor
  156. DS3232 real-time clock chips. If an interrupt is associated
  157. with the device, the alarm functionality is supported.
  158. This driver can also be built as a module. If so, the module
  159. will be called rtc-ds3232.
  160. config RTC_DRV_MAX6900
  161. tristate "Maxim MAX6900"
  162. help
  163. If you say yes here you will get support for the
  164. Maxim MAX6900 I2C RTC chip.
  165. This driver can also be built as a module. If so, the module
  166. will be called rtc-max6900.
  167. config RTC_DRV_MAX8907
  168. tristate "Maxim MAX8907"
  169. depends on MFD_MAX8907
  170. help
  171. If you say yes here you will get support for the
  172. RTC of Maxim MAX8907 PMIC.
  173. This driver can also be built as a module. If so, the module
  174. will be called rtc-max8907.
  175. config RTC_DRV_MAX8925
  176. tristate "Maxim MAX8925"
  177. depends on MFD_MAX8925
  178. help
  179. If you say yes here you will get support for the
  180. RTC of Maxim MAX8925 PMIC.
  181. This driver can also be built as a module. If so, the module
  182. will be called rtc-max8925.
  183. config RTC_DRV_MAX8998
  184. tristate "Maxim MAX8998"
  185. depends on MFD_MAX8998
  186. help
  187. If you say yes here you will get support for the
  188. RTC of Maxim MAX8998 PMIC.
  189. This driver can also be built as a module. If so, the module
  190. will be called rtc-max8998.
  191. config RTC_DRV_RS5C372
  192. tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
  193. help
  194. If you say yes here you get support for the
  195. Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
  196. This driver can also be built as a module. If so, the module
  197. will be called rtc-rs5c372.
  198. config RTC_DRV_ISL1208
  199. tristate "Intersil ISL1208"
  200. help
  201. If you say yes here you get support for the
  202. Intersil ISL1208 RTC chip.
  203. This driver can also be built as a module. If so, the module
  204. will be called rtc-isl1208.
  205. config RTC_DRV_ISL12022
  206. tristate "Intersil ISL12022"
  207. help
  208. If you say yes here you get support for the
  209. Intersil ISL12022 RTC chip.
  210. This driver can also be built as a module. If so, the module
  211. will be called rtc-isl12022.
  212. config RTC_DRV_X1205
  213. tristate "Xicor/Intersil X1205"
  214. help
  215. If you say yes here you get support for the
  216. Xicor/Intersil X1205 RTC chip.
  217. This driver can also be built as a module. If so, the module
  218. will be called rtc-x1205.
  219. config RTC_DRV_PALMAS
  220. tristate "TI Palmas RTC driver"
  221. depends on MFD_PALMAS
  222. help
  223. If you say yes here you get support for the RTC of TI PALMA series PMIC
  224. chips.
  225. This driver can also be built as a module. If so, the module
  226. will be called rtc-palma.
  227. config RTC_DRV_PCF8523
  228. tristate "NXP PCF8523"
  229. help
  230. If you say yes here you get support for the NXP PCF8523 RTC
  231. chips.
  232. This driver can also be built as a module. If so, the module
  233. will be called rtc-pcf8523.
  234. config RTC_DRV_PCF8563
  235. tristate "Philips PCF8563/Epson RTC8564"
  236. help
  237. If you say yes here you get support for the
  238. Philips PCF8563 RTC chip. The Epson RTC8564
  239. should work as well.
  240. This driver can also be built as a module. If so, the module
  241. will be called rtc-pcf8563.
  242. config RTC_DRV_PCF8583
  243. tristate "Philips PCF8583"
  244. help
  245. If you say yes here you get support for the Philips PCF8583
  246. RTC chip found on Acorn RiscPCs. This driver supports the
  247. platform specific method of retrieving the current year from
  248. the RTC's SRAM. It will work on other platforms with the same
  249. chip, but the year will probably have to be tweaked.
  250. This driver can also be built as a module. If so, the module
  251. will be called rtc-pcf8583.
  252. config RTC_DRV_M41T80
  253. tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
  254. help
  255. If you say Y here you will get support for the ST M41T60
  256. and M41T80 RTC chips series. Currently, the following chips are
  257. supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
  258. M41ST85, and M41ST87.
  259. This driver can also be built as a module. If so, the module
  260. will be called rtc-m41t80.
  261. config RTC_DRV_M41T80_WDT
  262. bool "ST M41T65/M41T80 series RTC watchdog timer"
  263. depends on RTC_DRV_M41T80
  264. help
  265. If you say Y here you will get support for the
  266. watchdog timer in the ST M41T60 and M41T80 RTC chips series.
  267. config RTC_DRV_BQ32K
  268. tristate "TI BQ32000"
  269. help
  270. If you say Y here you will get support for the TI
  271. BQ32000 I2C RTC chip.
  272. This driver can also be built as a module. If so, the module
  273. will be called rtc-bq32k.
  274. config RTC_DRV_DM355EVM
  275. tristate "TI DaVinci DM355 EVM RTC"
  276. depends on MFD_DM355EVM_MSP
  277. help
  278. Supports the RTC firmware in the MSP430 on the DM355 EVM.
  279. config RTC_DRV_TWL92330
  280. boolean "TI TWL92330/Menelaus"
  281. depends on MENELAUS
  282. help
  283. If you say yes here you get support for the RTC on the
  284. TWL92330 "Menelaus" power management chip, used with OMAP2
  285. platforms. The support is integrated with the rest of
  286. the Menelaus driver; it's not separate module.
  287. config RTC_DRV_TWL4030
  288. tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
  289. depends on TWL4030_CORE
  290. help
  291. If you say yes here you get support for the RTC on the
  292. TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
  293. This driver can also be built as a module. If so, the module
  294. will be called rtc-twl.
  295. config RTC_DRV_TPS6586X
  296. tristate "TI TPS6586X RTC driver"
  297. depends on MFD_TPS6586X
  298. help
  299. TI Power Managment IC TPS6586X supports RTC functionality
  300. along with alarm. This driver supports the RTC driver for
  301. the TPS6586X RTC module.
  302. config RTC_DRV_TPS65910
  303. tristate "TI TPS65910 RTC driver"
  304. depends on RTC_CLASS && MFD_TPS65910
  305. help
  306. If you say yes here you get support for the RTC on the
  307. TPS65910 chips.
  308. This driver can also be built as a module. If so, the module
  309. will be called rtc-tps65910.
  310. config RTC_DRV_RC5T583
  311. tristate "RICOH 5T583 RTC driver"
  312. depends on MFD_RC5T583
  313. help
  314. If you say yes here you get support for the RTC on the
  315. RICOH 5T583 chips.
  316. This driver can also be built as a module. If so, the module
  317. will be called rtc-rc5t583.
  318. config RTC_DRV_S35390A
  319. tristate "Seiko Instruments S-35390A"
  320. select BITREVERSE
  321. help
  322. If you say yes here you will get support for the Seiko
  323. Instruments S-35390A.
  324. This driver can also be built as a module. If so the module
  325. will be called rtc-s35390a.
  326. config RTC_DRV_FM3130
  327. tristate "Ramtron FM3130"
  328. help
  329. If you say Y here you will get support for the
  330. Ramtron FM3130 RTC chips.
  331. Ramtron FM3130 is a chip with two separate devices inside,
  332. RTC clock and FRAM. This driver provides only RTC functionality.
  333. This driver can also be built as a module. If so the module
  334. will be called rtc-fm3130.
  335. config RTC_DRV_RX8581
  336. tristate "Epson RX-8581"
  337. help
  338. If you say yes here you will get support for the Epson RX-8581.
  339. This driver can also be built as a module. If so the module
  340. will be called rtc-rx8581.
  341. config RTC_DRV_RX8025
  342. tristate "Epson RX-8025SA/NB"
  343. help
  344. If you say yes here you get support for the Epson
  345. RX-8025SA/NB RTC chips.
  346. This driver can also be built as a module. If so, the module
  347. will be called rtc-rx8025.
  348. config RTC_DRV_EM3027
  349. tristate "EM Microelectronic EM3027"
  350. help
  351. If you say yes here you get support for the EM
  352. Microelectronic EM3027 RTC chips.
  353. This driver can also be built as a module. If so, the module
  354. will be called rtc-em3027.
  355. config RTC_DRV_RV3029C2
  356. tristate "Micro Crystal RTC"
  357. help
  358. If you say yes here you get support for the Micro Crystal
  359. RV3029-C2 RTC chips.
  360. This driver can also be built as a module. If so, the module
  361. will be called rtc-rv3029c2.
  362. endif # I2C
  363. comment "SPI RTC drivers"
  364. if SPI_MASTER
  365. config RTC_DRV_M41T93
  366. tristate "ST M41T93"
  367. help
  368. If you say yes here you will get support for the
  369. ST M41T93 SPI RTC chip.
  370. This driver can also be built as a module. If so, the module
  371. will be called rtc-m41t93.
  372. config RTC_DRV_M41T94
  373. tristate "ST M41T94"
  374. help
  375. If you say yes here you will get support for the
  376. ST M41T94 SPI RTC chip.
  377. This driver can also be built as a module. If so, the module
  378. will be called rtc-m41t94.
  379. config RTC_DRV_DS1305
  380. tristate "Dallas/Maxim DS1305/DS1306"
  381. help
  382. Select this driver to get support for the Dallas/Maxim DS1305
  383. and DS1306 real time clock chips. These support a trickle
  384. charger, alarms, and NVRAM in addition to the clock.
  385. This driver can also be built as a module. If so, the module
  386. will be called rtc-ds1305.
  387. config RTC_DRV_DS1390
  388. tristate "Dallas/Maxim DS1390/93/94"
  389. help
  390. If you say yes here you get support for the
  391. Dallas/Maxim DS1390/93/94 chips.
  392. This driver only supports the RTC feature, and not other chip
  393. features such as alarms and trickle charging.
  394. This driver can also be built as a module. If so, the module
  395. will be called rtc-ds1390.
  396. config RTC_DRV_MAX6902
  397. tristate "Maxim MAX6902"
  398. help
  399. If you say yes here you will get support for the
  400. Maxim MAX6902 SPI RTC chip.
  401. This driver can also be built as a module. If so, the module
  402. will be called rtc-max6902.
  403. config RTC_DRV_R9701
  404. tristate "Epson RTC-9701JE"
  405. help
  406. If you say yes here you will get support for the
  407. Epson RTC-9701JE SPI RTC chip.
  408. This driver can also be built as a module. If so, the module
  409. will be called rtc-r9701.
  410. config RTC_DRV_RS5C348
  411. tristate "Ricoh RS5C348A/B"
  412. help
  413. If you say yes here you get support for the
  414. Ricoh RS5C348A and RS5C348B RTC chips.
  415. This driver can also be built as a module. If so, the module
  416. will be called rtc-rs5c348.
  417. config RTC_DRV_DS3234
  418. tristate "Maxim/Dallas DS3234"
  419. help
  420. If you say yes here you get support for the
  421. Maxim/Dallas DS3234 SPI RTC chip.
  422. This driver can also be built as a module. If so, the module
  423. will be called rtc-ds3234.
  424. config RTC_DRV_PCF2123
  425. tristate "NXP PCF2123"
  426. help
  427. If you say yes here you get support for the NXP PCF2123
  428. RTC chip.
  429. This driver can also be built as a module. If so, the module
  430. will be called rtc-pcf2123.
  431. endif # SPI_MASTER
  432. comment "Platform RTC drivers"
  433. # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
  434. # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
  435. # global rtc_lock ... it's not yet just another platform_device.
  436. config RTC_DRV_CMOS
  437. tristate "PC-style 'CMOS'"
  438. depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
  439. default y if X86
  440. help
  441. Say "yes" here to get direct support for the real time clock
  442. found in every PC or ACPI-based system, and some other boards.
  443. Specifically the original MC146818, compatibles like those in
  444. PC south bridges, the DS12887 or M48T86, some multifunction
  445. or LPC bus chips, and so on.
  446. Your system will need to define the platform device used by
  447. this driver, otherwise it won't be accessible. This means
  448. you can safely enable this driver if you don't know whether
  449. or not your board has this kind of hardware.
  450. This driver can also be built as a module. If so, the module
  451. will be called rtc-cmos.
  452. config RTC_DRV_VRTC
  453. tristate "Virtual RTC for Intel MID platforms"
  454. depends on X86_INTEL_MID
  455. default y if X86_INTEL_MID
  456. help
  457. Say "yes" here to get direct support for the real time clock
  458. found on Moorestown platforms. The VRTC is a emulated RTC that
  459. derives its clock source from a real RTC in the PMIC. The MC146818
  460. style programming interface is mostly conserved, but any
  461. updates are done via IPC calls to the system controller FW.
  462. config RTC_DRV_DS1216
  463. tristate "Dallas DS1216"
  464. depends on SNI_RM
  465. help
  466. If you say yes here you get support for the Dallas DS1216 RTC chips.
  467. config RTC_DRV_DS1286
  468. tristate "Dallas DS1286"
  469. help
  470. If you say yes here you get support for the Dallas DS1286 RTC chips.
  471. config RTC_DRV_DS1302
  472. tristate "Dallas DS1302"
  473. depends on SH_SECUREEDGE5410
  474. help
  475. If you say yes here you get support for the Dallas DS1302 RTC chips.
  476. config RTC_DRV_DS1511
  477. tristate "Dallas DS1511"
  478. help
  479. If you say yes here you get support for the
  480. Dallas DS1511 timekeeping/watchdog chip.
  481. This driver can also be built as a module. If so, the module
  482. will be called rtc-ds1511.
  483. config RTC_DRV_DS1553
  484. tristate "Maxim/Dallas DS1553"
  485. help
  486. If you say yes here you get support for the
  487. Maxim/Dallas DS1553 timekeeping chip.
  488. This driver can also be built as a module. If so, the module
  489. will be called rtc-ds1553.
  490. config RTC_DRV_DS1742
  491. tristate "Maxim/Dallas DS1742/1743"
  492. help
  493. If you say yes here you get support for the
  494. Maxim/Dallas DS1742/1743 timekeeping chip.
  495. This driver can also be built as a module. If so, the module
  496. will be called rtc-ds1742.
  497. config RTC_DRV_DA9052
  498. tristate "Dialog DA9052/DA9053 RTC"
  499. depends on PMIC_DA9052
  500. help
  501. Say y here to support the RTC driver for Dialog Semiconductor
  502. DA9052-BC and DA9053-AA/Bx PMICs.
  503. config RTC_DRV_DA9055
  504. tristate "Dialog Semiconductor DA9055 RTC"
  505. depends on MFD_DA9055
  506. help
  507. If you say yes here you will get support for the
  508. RTC of the Dialog DA9055 PMIC.
  509. This driver can also be built as a module. If so, the module
  510. will be called rtc-da9055
  511. config RTC_DRV_EFI
  512. tristate "EFI RTC"
  513. depends on IA64
  514. help
  515. If you say yes here you will get support for the EFI
  516. Real Time Clock.
  517. This driver can also be built as a module. If so, the module
  518. will be called rtc-efi.
  519. config RTC_DRV_STK17TA8
  520. tristate "Simtek STK17TA8"
  521. help
  522. If you say yes here you get support for the
  523. Simtek STK17TA8 timekeeping chip.
  524. This driver can also be built as a module. If so, the module
  525. will be called rtc-stk17ta8.
  526. config RTC_DRV_M48T86
  527. tristate "ST M48T86/Dallas DS12887"
  528. help
  529. If you say Y here you will get support for the
  530. ST M48T86 and Dallas DS12887 RTC chips.
  531. This driver can also be built as a module. If so, the module
  532. will be called rtc-m48t86.
  533. config RTC_DRV_M48T35
  534. tristate "ST M48T35"
  535. help
  536. If you say Y here you will get support for the
  537. ST M48T35 RTC chip.
  538. This driver can also be built as a module, if so, the module
  539. will be called "rtc-m48t35".
  540. config RTC_DRV_M48T59
  541. tristate "ST M48T59/M48T08/M48T02"
  542. help
  543. If you say Y here you will get support for the
  544. ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
  545. These chips are usually found in Sun SPARC and UltraSPARC
  546. workstations.
  547. This driver can also be built as a module, if so, the module
  548. will be called "rtc-m48t59".
  549. config RTC_DRV_MSM6242
  550. tristate "Oki MSM6242"
  551. help
  552. If you say yes here you get support for the Oki MSM6242
  553. timekeeping chip. It is used in some Amiga models (e.g. A2000).
  554. This driver can also be built as a module. If so, the module
  555. will be called rtc-msm6242.
  556. config RTC_DRV_BQ4802
  557. tristate "TI BQ4802"
  558. help
  559. If you say Y here you will get support for the TI
  560. BQ4802 RTC chip.
  561. This driver can also be built as a module. If so, the module
  562. will be called rtc-bq4802.
  563. config RTC_DRV_RP5C01
  564. tristate "Ricoh RP5C01"
  565. help
  566. If you say yes here you get support for the Ricoh RP5C01
  567. timekeeping chip. It is used in some Amiga models (e.g. A3000
  568. and A4000).
  569. This driver can also be built as a module. If so, the module
  570. will be called rtc-rp5c01.
  571. config RTC_DRV_V3020
  572. tristate "EM Microelectronic V3020"
  573. help
  574. If you say yes here you will get support for the
  575. EM Microelectronic v3020 RTC chip.
  576. This driver can also be built as a module. If so, the module
  577. will be called rtc-v3020.
  578. config RTC_DRV_DS2404
  579. tristate "Dallas DS2404"
  580. help
  581. If you say yes here you get support for the
  582. Dallas DS2404 RTC chip.
  583. This driver can also be built as a module. If so, the module
  584. will be called rtc-ds2404.
  585. config RTC_DRV_WM831X
  586. tristate "Wolfson Microelectronics WM831x RTC"
  587. depends on MFD_WM831X
  588. help
  589. If you say yes here you will get support for the RTC subsystem
  590. of the Wolfson Microelectronics WM831X series PMICs.
  591. This driver can also be built as a module. If so, the module
  592. will be called "rtc-wm831x".
  593. config RTC_DRV_WM8350
  594. tristate "Wolfson Microelectronics WM8350 RTC"
  595. depends on MFD_WM8350
  596. help
  597. If you say yes here you will get support for the RTC subsystem
  598. of the Wolfson Microelectronics WM8350.
  599. This driver can also be built as a module. If so, the module
  600. will be called "rtc-wm8350".
  601. config RTC_DRV_SPEAR
  602. tristate "SPEAR ST RTC"
  603. depends on PLAT_SPEAR
  604. default y
  605. help
  606. If you say Y here you will get support for the RTC found on
  607. spear
  608. config RTC_DRV_PCF50633
  609. depends on MFD_PCF50633
  610. tristate "NXP PCF50633 RTC"
  611. help
  612. If you say yes here you get support for the RTC subsystem of the
  613. NXP PCF50633 used in embedded systems.
  614. config RTC_DRV_AB3100
  615. tristate "ST-Ericsson AB3100 RTC"
  616. depends on AB3100_CORE
  617. default y if AB3100_CORE
  618. help
  619. Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
  620. support. This chip contains a battery- and capacitor-backed RTC.
  621. config RTC_DRV_AB8500
  622. tristate "ST-Ericsson AB8500 RTC"
  623. depends on AB8500_CORE
  624. select RTC_INTF_DEV
  625. select RTC_INTF_DEV_UIE_EMUL
  626. help
  627. Select this to enable the ST-Ericsson AB8500 power management IC RTC
  628. support. This chip contains a battery- and capacitor-backed RTC.
  629. config RTC_DRV_NUC900
  630. tristate "NUC910/NUC920 RTC driver"
  631. depends on ARCH_W90X900
  632. help
  633. If you say yes here you get support for the RTC subsystem of the
  634. NUC910/NUC920 used in embedded systems.
  635. comment "on-CPU RTC drivers"
  636. config RTC_DRV_DAVINCI
  637. tristate "TI DaVinci RTC"
  638. depends on ARCH_DAVINCI_DM365
  639. help
  640. If you say yes here you get support for the RTC on the
  641. DaVinci platforms (DM365).
  642. This driver can also be built as a module. If so, the module
  643. will be called rtc-davinci.
  644. config RTC_DRV_IMXDI
  645. tristate "Freescale IMX DryIce Real Time Clock"
  646. depends on ARCH_MXC
  647. help
  648. Support for Freescale IMX DryIce RTC
  649. This driver can also be built as a module, if so, the module
  650. will be called "rtc-imxdi".
  651. config RTC_DRV_OMAP
  652. tristate "TI OMAP1"
  653. depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX || SOC_AM33XX
  654. help
  655. Say "yes" here to support the on chip real time clock
  656. present on TI OMAP1, AM33xx and DA8xx/OMAP-L13x.
  657. This driver can also be built as a module, if so, module
  658. will be called rtc-omap.
  659. config HAVE_S3C_RTC
  660. bool
  661. help
  662. This will include RTC support for Samsung SoCs. If
  663. you want to include RTC support for any machine, kindly
  664. select this in the respective mach-XXXX/Kconfig file.
  665. config RTC_DRV_S3C
  666. tristate "Samsung S3C series SoC RTC"
  667. depends on ARCH_S3C64XX || HAVE_S3C_RTC
  668. help
  669. RTC (Realtime Clock) driver for the clock inbuilt into the
  670. Samsung S3C24XX series of SoCs. This can provide periodic
  671. interrupt rates from 1Hz to 64Hz for user programs, and
  672. wakeup from Alarm.
  673. The driver currently supports the common features on all the
  674. S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
  675. and S3C2442.
  676. This driver can also be build as a module. If so, the module
  677. will be called rtc-s3c.
  678. config RTC_DRV_EP93XX
  679. tristate "Cirrus Logic EP93XX"
  680. depends on ARCH_EP93XX
  681. help
  682. If you say yes here you get support for the
  683. RTC embedded in the Cirrus Logic EP93XX processors.
  684. This driver can also be built as a module. If so, the module
  685. will be called rtc-ep93xx.
  686. config RTC_DRV_SA1100
  687. tristate "SA11x0/PXA2xx/PXA910"
  688. depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
  689. help
  690. If you say Y here you will get access to the real time clock
  691. built into your SA11x0 or PXA2xx CPU.
  692. To compile this driver as a module, choose M here: the
  693. module will be called rtc-sa1100.
  694. config RTC_DRV_SH
  695. tristate "SuperH On-Chip RTC"
  696. depends on SUPERH && HAVE_CLK
  697. help
  698. Say Y here to enable support for the on-chip RTC found in
  699. most SuperH processors.
  700. To compile this driver as a module, choose M here: the
  701. module will be called rtc-sh.
  702. config RTC_DRV_VR41XX
  703. tristate "NEC VR41XX"
  704. depends on CPU_VR41XX
  705. help
  706. If you say Y here you will get access to the real time clock
  707. built into your NEC VR41XX CPU.
  708. To compile this driver as a module, choose M here: the
  709. module will be called rtc-vr41xx.
  710. config RTC_DRV_PL030
  711. tristate "ARM AMBA PL030 RTC"
  712. depends on ARM_AMBA
  713. help
  714. If you say Y here you will get access to ARM AMBA
  715. PrimeCell PL030 RTC found on certain ARM SOCs.
  716. To compile this driver as a module, choose M here: the
  717. module will be called rtc-pl030.
  718. config RTC_DRV_PL031
  719. tristate "ARM AMBA PL031 RTC"
  720. depends on ARM_AMBA
  721. help
  722. If you say Y here you will get access to ARM AMBA
  723. PrimeCell PL031 RTC found on certain ARM SOCs.
  724. To compile this driver as a module, choose M here: the
  725. module will be called rtc-pl031.
  726. config RTC_DRV_AT32AP700X
  727. tristate "AT32AP700X series RTC"
  728. depends on PLATFORM_AT32AP
  729. help
  730. Driver for the internal RTC (Realtime Clock) on Atmel AVR32
  731. AT32AP700x family processors.
  732. config RTC_DRV_AT91RM9200
  733. tristate "AT91RM9200 or some AT91SAM9 RTC"
  734. depends on ARCH_AT91
  735. help
  736. Driver for the internal RTC (Realtime Clock) module found on
  737. Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
  738. this is powered by the backup power supply.
  739. config RTC_DRV_AT91SAM9
  740. tristate "AT91SAM9x/AT91CAP9 RTT as RTC"
  741. depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
  742. help
  743. RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
  744. (Real Time Timer). These timers are powered by the backup power
  745. supply (such as a small coin cell battery), but do not need to
  746. be used as RTCs.
  747. (On AT91SAM9rl and AT91SAM9G45 chips you probably want to use the
  748. dedicated RTC module and leave the RTT available for other uses.)
  749. config RTC_DRV_AT91SAM9_RTT
  750. int
  751. range 0 1
  752. default 0
  753. prompt "RTT module Number" if ARCH_AT91SAM9263
  754. depends on RTC_DRV_AT91SAM9
  755. help
  756. More than one RTT module is available. You can choose which
  757. one will be used as an RTC. The default of zero is normally
  758. OK to use, though some systems use that for non-RTC purposes.
  759. config RTC_DRV_AT91SAM9_GPBR
  760. int
  761. range 0 3 if !ARCH_AT91SAM9263
  762. range 0 15 if ARCH_AT91SAM9263
  763. default 0
  764. prompt "Backup Register Number"
  765. depends on RTC_DRV_AT91SAM9
  766. help
  767. The RTC driver needs to use one of the General Purpose Backup
  768. Registers (GPBRs) as well as the RTT. You can choose which one
  769. will be used. The default of zero is normally OK to use, but
  770. on some systems other software needs to use that register.
  771. config RTC_DRV_AU1XXX
  772. tristate "Au1xxx Counter0 RTC support"
  773. depends on MIPS_ALCHEMY
  774. help
  775. This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
  776. counter) to be used as a RTC.
  777. This driver can also be built as a module. If so, the module
  778. will be called rtc-au1xxx.
  779. config RTC_DRV_BFIN
  780. tristate "Blackfin On-Chip RTC"
  781. depends on BLACKFIN && !BF561
  782. help
  783. If you say yes here you will get support for the
  784. Blackfin On-Chip Real Time Clock.
  785. This driver can also be built as a module. If so, the module
  786. will be called rtc-bfin.
  787. config RTC_DRV_RS5C313
  788. tristate "Ricoh RS5C313"
  789. depends on SH_LANDISK
  790. help
  791. If you say yes here you get support for the Ricoh RS5C313 RTC chips.
  792. config RTC_DRV_GENERIC
  793. tristate "Generic RTC support"
  794. # Please consider writing a new RTC driver instead of using the generic
  795. # RTC abstraction
  796. depends on PARISC || M68K || PPC || SUPERH32
  797. help
  798. Say Y or M here to enable RTC support on systems using the generic
  799. RTC abstraction. If you do not know what you are doing, you should
  800. just say Y.
  801. config RTC_DRV_PXA
  802. tristate "PXA27x/PXA3xx"
  803. depends on ARCH_PXA
  804. help
  805. If you say Y here you will get access to the real time clock
  806. built into your PXA27x or PXA3xx CPU.
  807. This RTC driver uses PXA RTC registers available since pxa27x
  808. series (RDxR, RYxR) instead of legacy RCNR, RTAR.
  809. config RTC_DRV_VT8500
  810. tristate "VIA/WonderMedia 85xx SoC RTC"
  811. depends on ARCH_VT8500
  812. help
  813. If you say Y here you will get access to the real time clock
  814. built into your VIA VT8500 SoC or its relatives.
  815. config RTC_DRV_SUN4V
  816. bool "SUN4V Hypervisor RTC"
  817. depends on SPARC64
  818. help
  819. If you say Y here you will get support for the Hypervisor
  820. based RTC on SUN4V systems.
  821. config RTC_DRV_STARFIRE
  822. bool "Starfire RTC"
  823. depends on SPARC64
  824. help
  825. If you say Y here you will get support for the RTC found on
  826. Starfire systems.
  827. config RTC_DRV_TX4939
  828. tristate "TX4939 SoC"
  829. depends on SOC_TX4939
  830. help
  831. Driver for the internal RTC (Realtime Clock) module found on
  832. Toshiba TX4939 SoC.
  833. config RTC_DRV_MV
  834. tristate "Marvell SoC RTC"
  835. depends on ARCH_KIRKWOOD || ARCH_DOVE
  836. help
  837. If you say yes here you will get support for the in-chip RTC
  838. that can be found in some of Marvell's SoC devices, such as
  839. the Kirkwood 88F6281 and 88F6192.
  840. This driver can also be built as a module. If so, the module
  841. will be called rtc-mv.
  842. config RTC_DRV_PS3
  843. tristate "PS3 RTC"
  844. depends on PPC_PS3
  845. help
  846. If you say yes here you will get support for the RTC on PS3.
  847. This driver can also be built as a module. If so, the module
  848. will be called rtc-ps3.
  849. config RTC_DRV_COH901331
  850. tristate "ST-Ericsson COH 901 331 RTC"
  851. depends on ARCH_U300
  852. help
  853. If you say Y here you will get access to ST-Ericsson
  854. COH 901 331 RTC clock found in some ST-Ericsson Mobile
  855. Platforms.
  856. This driver can also be built as a module. If so, the module
  857. will be called "rtc-coh901331".
  858. config RTC_DRV_STMP
  859. tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
  860. depends on ARCH_MXS
  861. help
  862. If you say yes here you will get support for the onboard
  863. STMP3xxx/i.MX23/i.MX28 RTC.
  864. This driver can also be built as a module. If so, the module
  865. will be called rtc-stmp3xxx.
  866. config RTC_DRV_PCAP
  867. tristate "PCAP RTC"
  868. depends on EZX_PCAP
  869. help
  870. If you say Y here you will get support for the RTC found on
  871. the PCAP2 ASIC used on some Motorola phones.
  872. config RTC_DRV_MC13XXX
  873. depends on MFD_MC13XXX
  874. tristate "Freescale MC13xxx RTC"
  875. help
  876. This enables support for the RTCs found on Freescale's PMICs
  877. MC13783 and MC13892.
  878. config RTC_DRV_MPC5121
  879. tristate "Freescale MPC5121 built-in RTC"
  880. depends on PPC_MPC512x || PPC_MPC52xx
  881. help
  882. If you say yes here you will get support for the
  883. built-in RTC on MPC5121 or on MPC5200.
  884. This driver can also be built as a module. If so, the module
  885. will be called rtc-mpc5121.
  886. config RTC_DRV_JZ4740
  887. tristate "Ingenic JZ4740 SoC"
  888. depends on MACH_JZ4740
  889. help
  890. If you say yes here you get support for the Ingenic JZ4740 SoC RTC
  891. controller.
  892. This driver can also be buillt as a module. If so, the module
  893. will be called rtc-jz4740.
  894. config RTC_DRV_LPC32XX
  895. depends on ARCH_LPC32XX
  896. tristate "NXP LPC32XX RTC"
  897. help
  898. This enables support for the NXP RTC in the LPC32XX
  899. This driver can also be buillt as a module. If so, the module
  900. will be called rtc-lpc32xx.
  901. config RTC_DRV_PM8XXX
  902. tristate "Qualcomm PMIC8XXX RTC"
  903. depends on MFD_PM8XXX
  904. help
  905. If you say yes here you get support for the
  906. Qualcomm PMIC8XXX RTC.
  907. To compile this driver as a module, choose M here: the
  908. module will be called rtc-pm8xxx.
  909. config RTC_DRV_TEGRA
  910. tristate "NVIDIA Tegra Internal RTC driver"
  911. depends on ARCH_TEGRA
  912. help
  913. If you say yes here you get support for the
  914. Tegra 200 series internal RTC module.
  915. This drive can also be built as a module. If so, the module
  916. will be called rtc-tegra.
  917. config RTC_DRV_TILE
  918. tristate "Tilera hypervisor RTC support"
  919. depends on TILE
  920. help
  921. Enable support for the Linux driver side of the Tilera
  922. hypervisor's real-time clock interface.
  923. config RTC_DRV_PUV3
  924. tristate "PKUnity v3 RTC support"
  925. depends on ARCH_PUV3
  926. help
  927. This enables support for the RTC in the PKUnity-v3 SoCs.
  928. This drive can also be built as a module. If so, the module
  929. will be called rtc-puv3.
  930. config RTC_DRV_LOONGSON1
  931. tristate "loongson1 RTC support"
  932. depends on MACH_LOONGSON1
  933. help
  934. This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
  935. counter) to be used as a RTC.
  936. This driver can also be built as a module. If so, the module
  937. will be called rtc-ls1x.
  938. config RTC_DRV_MXC
  939. tristate "Freescale MXC Real Time Clock"
  940. depends on ARCH_MXC
  941. help
  942. If you say yes here you get support for the Freescale MXC
  943. RTC module.
  944. This driver can also be built as a module, if so, the module
  945. will be called "rtc-mxc".
  946. config RTC_DRV_SNVS
  947. tristate "Freescale SNVS RTC support"
  948. depends on HAS_IOMEM
  949. depends on OF
  950. help
  951. If you say yes here you get support for the Freescale SNVS
  952. Low Power (LP) RTC module.
  953. This driver can also be built as a module, if so, the module
  954. will be called "rtc-snvs".
  955. endif # RTC_CLASS