Kconfig 32 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. depends on RTC_CLASS = y
  19. default y
  20. help
  21. If you say yes here, the system time (wall clock) will be set using
  22. the value read from a specified RTC device. This is useful to avoid
  23. unnecessary fsck runs at boot time, and to network better.
  24. config RTC_HCTOSYS_DEVICE
  25. string "RTC used to set the system time"
  26. depends on RTC_HCTOSYS = y
  27. default "rtc0"
  28. help
  29. The RTC device that will be used to (re)initialize the system
  30. clock, usually rtc0. Initialization is done when the system
  31. starts up, and when it resumes from a low power state. This
  32. device should record time in UTC, since the kernel won't do
  33. timezone correction.
  34. The driver for this RTC device must be loaded before late_initcall
  35. functions run, so it must usually be statically linked.
  36. This clock should be battery-backed, so that it reads the correct
  37. time when the system boots from a power-off state. Otherwise, your
  38. system will need an external clock source (like an NTP server).
  39. If the clock you specify here is not battery backed, it may still
  40. be useful to reinitialize system time when resuming from system
  41. sleep states. Do not specify an RTC here unless it stays powered
  42. during all this system's supported sleep states.
  43. config RTC_DEBUG
  44. bool "RTC debug support"
  45. depends on RTC_CLASS = y
  46. help
  47. Say yes here to enable debugging support in the RTC framework
  48. and individual RTC drivers.
  49. comment "RTC interfaces"
  50. config RTC_INTF_SYSFS
  51. boolean "/sys/class/rtc/rtcN (sysfs)"
  52. depends on SYSFS
  53. default RTC_CLASS
  54. help
  55. Say yes here if you want to use your RTCs using sysfs interfaces,
  56. /sys/class/rtc/rtc0 through /sys/.../rtcN.
  57. If unsure, say Y.
  58. config RTC_INTF_PROC
  59. boolean "/proc/driver/rtc (procfs for rtcN)"
  60. depends on PROC_FS
  61. default RTC_CLASS
  62. help
  63. Say yes here if you want to use your system clock RTC through
  64. the proc interface, /proc/driver/rtc.
  65. Other RTCs will not be available through that API.
  66. If there is no RTC for the system clock, then the first RTC(rtc0)
  67. is used by default.
  68. If unsure, say Y.
  69. config RTC_INTF_DEV
  70. boolean "/dev/rtcN (character devices)"
  71. default RTC_CLASS
  72. help
  73. Say yes here if you want to use your RTCs using the /dev
  74. interfaces, which "udev" sets up as /dev/rtc0 through
  75. /dev/rtcN.
  76. You may want to set up a symbolic link so one of these
  77. can be accessed as /dev/rtc, which is a name
  78. expected by "hwclock" and some other programs. Recent
  79. versions of "udev" are known to set up the symlink for you.
  80. If unsure, say Y.
  81. config RTC_INTF_DEV_UIE_EMUL
  82. bool "RTC UIE emulation on dev interface"
  83. depends on RTC_INTF_DEV
  84. help
  85. Provides an emulation for RTC_UIE if the underlying rtc chip
  86. driver does not expose RTC_UIE ioctls. Those requests generate
  87. once-per-second update interrupts, used for synchronization.
  88. The emulation code will read the time from the hardware
  89. clock several times per second, please enable this option
  90. only if you know that you really need it.
  91. config RTC_DRV_TEST
  92. tristate "Test driver/device"
  93. help
  94. If you say yes here you get support for the
  95. RTC test driver. It's a software RTC which can be
  96. used to test the RTC subsystem APIs. It gets
  97. the time from the system clock.
  98. You want this driver only if you are doing development
  99. on the RTC subsystem. Please read the source code
  100. for further details.
  101. This driver can also be built as a module. If so, the module
  102. will be called rtc-test.
  103. comment "I2C RTC drivers"
  104. depends on I2C
  105. if I2C
  106. config RTC_DRV_88PM860X
  107. tristate "Marvell 88PM860x"
  108. depends on RTC_CLASS && I2C && MFD_88PM860X
  109. help
  110. If you say yes here you get support for RTC function in Marvell
  111. 88PM860x chips.
  112. This driver can also be built as a module. If so, the module
  113. will be called rtc-88pm860x.
  114. config RTC_DRV_88PM80X
  115. tristate "Marvell 88PM80x"
  116. depends on RTC_CLASS && I2C && MFD_88PM800
  117. help
  118. If you say yes here you get support for RTC function in Marvell
  119. 88PM80x chips.
  120. This driver can also be built as a module. If so, the module
  121. will be called rtc-88pm80x.
  122. config RTC_DRV_DS1307
  123. tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
  124. help
  125. If you say yes here you get support for various compatible RTC
  126. chips (often with battery backup) connected with I2C. This driver
  127. should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
  128. EPSON RX-8025 and probably other chips. In some cases the RTC
  129. must already have been initialized (by manufacturing or a
  130. bootloader).
  131. The first seven registers on these chips hold an RTC, and other
  132. registers may add features such as NVRAM, a trickle charger for
  133. the RTC/NVRAM backup power, and alarms. NVRAM is visible in
  134. sysfs, but other chip features may not be available.
  135. This driver can also be built as a module. If so, the module
  136. will be called rtc-ds1307.
  137. config RTC_DRV_DS1374
  138. tristate "Dallas/Maxim DS1374"
  139. depends on RTC_CLASS && I2C
  140. help
  141. If you say yes here you get support for Dallas Semiconductor
  142. DS1374 real-time clock chips. If an interrupt is associated
  143. with the device, the alarm functionality is supported.
  144. This driver can also be built as a module. If so, the module
  145. will be called rtc-ds1374.
  146. config RTC_DRV_DS1672
  147. tristate "Dallas/Maxim DS1672"
  148. help
  149. If you say yes here you get support for the
  150. Dallas/Maxim DS1672 timekeeping chip.
  151. This driver can also be built as a module. If so, the module
  152. will be called rtc-ds1672.
  153. config RTC_DRV_DS3232
  154. tristate "Dallas/Maxim DS3232"
  155. depends on RTC_CLASS && I2C
  156. help
  157. If you say yes here you get support for Dallas Semiconductor
  158. DS3232 real-time clock chips. If an interrupt is associated
  159. with the device, the alarm functionality is supported.
  160. This driver can also be built as a module. If so, the module
  161. will be called rtc-ds3232.
  162. config RTC_DRV_MAX6900
  163. tristate "Maxim MAX6900"
  164. help
  165. If you say yes here you will get support for the
  166. Maxim MAX6900 I2C RTC chip.
  167. This driver can also be built as a module. If so, the module
  168. will be called rtc-max6900.
  169. config RTC_DRV_MAX8925
  170. tristate "Maxim MAX8925"
  171. depends on MFD_MAX8925
  172. help
  173. If you say yes here you will get support for the
  174. RTC of Maxim MAX8925 PMIC.
  175. This driver can also be built as a module. If so, the module
  176. will be called rtc-max8925.
  177. config RTC_DRV_MAX8998
  178. tristate "Maxim MAX8998"
  179. depends on MFD_MAX8998
  180. help
  181. If you say yes here you will get support for the
  182. RTC of Maxim MAX8998 PMIC.
  183. This driver can also be built as a module. If so, the module
  184. will be called rtc-max8998.
  185. config RTC_DRV_RS5C372
  186. tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
  187. help
  188. If you say yes here you get support for the
  189. Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
  190. This driver can also be built as a module. If so, the module
  191. will be called rtc-rs5c372.
  192. config RTC_DRV_ISL1208
  193. tristate "Intersil ISL1208"
  194. help
  195. If you say yes here you get support for the
  196. Intersil ISL1208 RTC chip.
  197. This driver can also be built as a module. If so, the module
  198. will be called rtc-isl1208.
  199. config RTC_DRV_ISL12022
  200. tristate "Intersil ISL12022"
  201. help
  202. If you say yes here you get support for the
  203. Intersil ISL12022 RTC chip.
  204. This driver can also be built as a module. If so, the module
  205. will be called rtc-isl12022.
  206. config RTC_DRV_X1205
  207. tristate "Xicor/Intersil X1205"
  208. help
  209. If you say yes here you get support for the
  210. Xicor/Intersil X1205 RTC chip.
  211. This driver can also be built as a module. If so, the module
  212. will be called rtc-x1205.
  213. config RTC_DRV_PCF8563
  214. tristate "Philips PCF8563/Epson RTC8564"
  215. help
  216. If you say yes here you get support for the
  217. Philips PCF8563 RTC chip. The Epson RTC8564
  218. should work as well.
  219. This driver can also be built as a module. If so, the module
  220. will be called rtc-pcf8563.
  221. config RTC_DRV_PCF8583
  222. tristate "Philips PCF8583"
  223. help
  224. If you say yes here you get support for the Philips PCF8583
  225. RTC chip found on Acorn RiscPCs. This driver supports the
  226. platform specific method of retrieving the current year from
  227. the RTC's SRAM. It will work on other platforms with the same
  228. chip, but the year will probably have to be tweaked.
  229. This driver can also be built as a module. If so, the module
  230. will be called rtc-pcf8583.
  231. config RTC_DRV_M41T80
  232. tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
  233. help
  234. If you say Y here you will get support for the ST M41T60
  235. and M41T80 RTC chips series. Currently, the following chips are
  236. supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
  237. M41ST85, and M41ST87.
  238. This driver can also be built as a module. If so, the module
  239. will be called rtc-m41t80.
  240. config RTC_DRV_M41T80_WDT
  241. bool "ST M41T65/M41T80 series RTC watchdog timer"
  242. depends on RTC_DRV_M41T80
  243. help
  244. If you say Y here you will get support for the
  245. watchdog timer in the ST M41T60 and M41T80 RTC chips series.
  246. config RTC_DRV_BQ32K
  247. tristate "TI BQ32000"
  248. help
  249. If you say Y here you will get support for the TI
  250. BQ32000 I2C RTC chip.
  251. This driver can also be built as a module. If so, the module
  252. will be called rtc-bq32k.
  253. config RTC_DRV_DM355EVM
  254. tristate "TI DaVinci DM355 EVM RTC"
  255. depends on MFD_DM355EVM_MSP
  256. help
  257. Supports the RTC firmware in the MSP430 on the DM355 EVM.
  258. config RTC_DRV_TWL92330
  259. boolean "TI TWL92330/Menelaus"
  260. depends on MENELAUS
  261. help
  262. If you say yes here you get support for the RTC on the
  263. TWL92330 "Menelaus" power management chip, used with OMAP2
  264. platforms. The support is integrated with the rest of
  265. the Menelaus driver; it's not separate module.
  266. config RTC_DRV_TWL4030
  267. tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
  268. depends on RTC_CLASS && TWL4030_CORE
  269. help
  270. If you say yes here you get support for the RTC on the
  271. TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
  272. This driver can also be built as a module. If so, the module
  273. will be called rtc-twl.
  274. config RTC_DRV_S35390A
  275. tristate "Seiko Instruments S-35390A"
  276. select BITREVERSE
  277. help
  278. If you say yes here you will get support for the Seiko
  279. Instruments S-35390A.
  280. This driver can also be built as a module. If so the module
  281. will be called rtc-s35390a.
  282. config RTC_DRV_FM3130
  283. tristate "Ramtron FM3130"
  284. help
  285. If you say Y here you will get support for the
  286. Ramtron FM3130 RTC chips.
  287. Ramtron FM3130 is a chip with two separate devices inside,
  288. RTC clock and FRAM. This driver provides only RTC functionality.
  289. This driver can also be built as a module. If so the module
  290. will be called rtc-fm3130.
  291. config RTC_DRV_RX8581
  292. tristate "Epson RX-8581"
  293. help
  294. If you say yes here you will get support for the Epson RX-8581.
  295. This driver can also be built as a module. If so the module
  296. will be called rtc-rx8581.
  297. config RTC_DRV_RX8025
  298. tristate "Epson RX-8025SA/NB"
  299. help
  300. If you say yes here you get support for the Epson
  301. RX-8025SA/NB RTC chips.
  302. This driver can also be built as a module. If so, the module
  303. will be called rtc-rx8025.
  304. config RTC_DRV_EM3027
  305. tristate "EM Microelectronic EM3027"
  306. help
  307. If you say yes here you get support for the EM
  308. Microelectronic EM3027 RTC chips.
  309. This driver can also be built as a module. If so, the module
  310. will be called rtc-em3027.
  311. config RTC_DRV_RV3029C2
  312. tristate "Micro Crystal RTC"
  313. help
  314. If you say yes here you get support for the Micro Crystal
  315. RV3029-C2 RTC chips.
  316. This driver can also be built as a module. If so, the module
  317. will be called rtc-rv3029c2.
  318. endif # I2C
  319. comment "SPI RTC drivers"
  320. if SPI_MASTER
  321. config RTC_DRV_M41T93
  322. tristate "ST M41T93"
  323. help
  324. If you say yes here you will get support for the
  325. ST M41T93 SPI RTC chip.
  326. This driver can also be built as a module. If so, the module
  327. will be called rtc-m41t93.
  328. config RTC_DRV_M41T94
  329. tristate "ST M41T94"
  330. help
  331. If you say yes here you will get support for the
  332. ST M41T94 SPI RTC chip.
  333. This driver can also be built as a module. If so, the module
  334. will be called rtc-m41t94.
  335. config RTC_DRV_DS1305
  336. tristate "Dallas/Maxim DS1305/DS1306"
  337. help
  338. Select this driver to get support for the Dallas/Maxim DS1305
  339. and DS1306 real time clock chips. These support a trickle
  340. charger, alarms, and NVRAM in addition to the clock.
  341. This driver can also be built as a module. If so, the module
  342. will be called rtc-ds1305.
  343. config RTC_DRV_DS1390
  344. tristate "Dallas/Maxim DS1390/93/94"
  345. help
  346. If you say yes here you get support for the
  347. Dallas/Maxim DS1390/93/94 chips.
  348. This driver only supports the RTC feature, and not other chip
  349. features such as alarms and trickle charging.
  350. This driver can also be built as a module. If so, the module
  351. will be called rtc-ds1390.
  352. config RTC_DRV_MAX6902
  353. tristate "Maxim MAX6902"
  354. help
  355. If you say yes here you will get support for the
  356. Maxim MAX6902 SPI RTC chip.
  357. This driver can also be built as a module. If so, the module
  358. will be called rtc-max6902.
  359. config RTC_DRV_R9701
  360. tristate "Epson RTC-9701JE"
  361. help
  362. If you say yes here you will get support for the
  363. Epson RTC-9701JE SPI RTC chip.
  364. This driver can also be built as a module. If so, the module
  365. will be called rtc-r9701.
  366. config RTC_DRV_RS5C348
  367. tristate "Ricoh RS5C348A/B"
  368. help
  369. If you say yes here you get support for the
  370. Ricoh RS5C348A and RS5C348B RTC chips.
  371. This driver can also be built as a module. If so, the module
  372. will be called rtc-rs5c348.
  373. config RTC_DRV_DS3234
  374. tristate "Maxim/Dallas DS3234"
  375. help
  376. If you say yes here you get support for the
  377. Maxim/Dallas DS3234 SPI RTC chip.
  378. This driver can also be built as a module. If so, the module
  379. will be called rtc-ds3234.
  380. config RTC_DRV_PCF2123
  381. tristate "NXP PCF2123"
  382. help
  383. If you say yes here you get support for the NXP PCF2123
  384. RTC chip.
  385. This driver can also be built as a module. If so, the module
  386. will be called rtc-pcf2123.
  387. endif # SPI_MASTER
  388. comment "Platform RTC drivers"
  389. # this 'CMOS' RTC driver is arch dependent because <asm-generic/rtc.h>
  390. # requires <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
  391. # global rtc_lock ... it's not yet just another platform_device.
  392. config RTC_DRV_CMOS
  393. tristate "PC-style 'CMOS'"
  394. depends on X86 || ALPHA || ARM || M32R || ATARI || PPC || MIPS || SPARC64
  395. default y if X86
  396. help
  397. Say "yes" here to get direct support for the real time clock
  398. found in every PC or ACPI-based system, and some other boards.
  399. Specifically the original MC146818, compatibles like those in
  400. PC south bridges, the DS12887 or M48T86, some multifunction
  401. or LPC bus chips, and so on.
  402. Your system will need to define the platform device used by
  403. this driver, otherwise it won't be accessible. This means
  404. you can safely enable this driver if you don't know whether
  405. or not your board has this kind of hardware.
  406. This driver can also be built as a module. If so, the module
  407. will be called rtc-cmos.
  408. config RTC_DRV_VRTC
  409. tristate "Virtual RTC for Intel MID platforms"
  410. depends on X86_INTEL_MID
  411. default y if X86_INTEL_MID
  412. help
  413. Say "yes" here to get direct support for the real time clock
  414. found on Moorestown platforms. The VRTC is a emulated RTC that
  415. derives its clock source from a real RTC in the PMIC. The MC146818
  416. style programming interface is mostly conserved, but any
  417. updates are done via IPC calls to the system controller FW.
  418. config RTC_DRV_DS1216
  419. tristate "Dallas DS1216"
  420. depends on SNI_RM
  421. help
  422. If you say yes here you get support for the Dallas DS1216 RTC chips.
  423. config RTC_DRV_DS1286
  424. tristate "Dallas DS1286"
  425. help
  426. If you say yes here you get support for the Dallas DS1286 RTC chips.
  427. config RTC_DRV_DS1302
  428. tristate "Dallas DS1302"
  429. depends on SH_SECUREEDGE5410
  430. help
  431. If you say yes here you get support for the Dallas DS1302 RTC chips.
  432. config RTC_DRV_DS1511
  433. tristate "Dallas DS1511"
  434. depends on RTC_CLASS
  435. help
  436. If you say yes here you get support for the
  437. Dallas DS1511 timekeeping/watchdog chip.
  438. This driver can also be built as a module. If so, the module
  439. will be called rtc-ds1511.
  440. config RTC_DRV_DS1553
  441. tristate "Maxim/Dallas DS1553"
  442. help
  443. If you say yes here you get support for the
  444. Maxim/Dallas DS1553 timekeeping chip.
  445. This driver can also be built as a module. If so, the module
  446. will be called rtc-ds1553.
  447. config RTC_DRV_DS1742
  448. tristate "Maxim/Dallas DS1742/1743"
  449. help
  450. If you say yes here you get support for the
  451. Maxim/Dallas DS1742/1743 timekeeping chip.
  452. This driver can also be built as a module. If so, the module
  453. will be called rtc-ds1742.
  454. config RTC_DRV_DA9052
  455. tristate "Dialog DA9052/DA9053 RTC"
  456. depends on PMIC_DA9052
  457. help
  458. Say y here to support the RTC driver for Dialog Semiconductor
  459. DA9052-BC and DA9053-AA/Bx PMICs.
  460. config RTC_DRV_EFI
  461. tristate "EFI RTC"
  462. depends on IA64
  463. help
  464. If you say yes here you will get support for the EFI
  465. Real Time Clock.
  466. This driver can also be built as a module. If so, the module
  467. will be called rtc-efi.
  468. config RTC_DRV_STK17TA8
  469. tristate "Simtek STK17TA8"
  470. depends on RTC_CLASS
  471. help
  472. If you say yes here you get support for the
  473. Simtek STK17TA8 timekeeping chip.
  474. This driver can also be built as a module. If so, the module
  475. will be called rtc-stk17ta8.
  476. config RTC_DRV_M48T86
  477. tristate "ST M48T86/Dallas DS12887"
  478. help
  479. If you say Y here you will get support for the
  480. ST M48T86 and Dallas DS12887 RTC chips.
  481. This driver can also be built as a module. If so, the module
  482. will be called rtc-m48t86.
  483. config RTC_DRV_M48T35
  484. tristate "ST M48T35"
  485. help
  486. If you say Y here you will get support for the
  487. ST M48T35 RTC chip.
  488. This driver can also be built as a module, if so, the module
  489. will be called "rtc-m48t35".
  490. config RTC_DRV_M48T59
  491. tristate "ST M48T59/M48T08/M48T02"
  492. help
  493. If you say Y here you will get support for the
  494. ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
  495. These chips are usually found in Sun SPARC and UltraSPARC
  496. workstations.
  497. This driver can also be built as a module, if so, the module
  498. will be called "rtc-m48t59".
  499. config RTC_DRV_MSM6242
  500. tristate "Oki MSM6242"
  501. help
  502. If you say yes here you get support for the Oki MSM6242
  503. timekeeping chip. It is used in some Amiga models (e.g. A2000).
  504. This driver can also be built as a module. If so, the module
  505. will be called rtc-msm6242.
  506. config RTC_DRV_BQ4802
  507. tristate "TI BQ4802"
  508. help
  509. If you say Y here you will get support for the TI
  510. BQ4802 RTC chip.
  511. This driver can also be built as a module. If so, the module
  512. will be called rtc-bq4802.
  513. config RTC_DRV_RP5C01
  514. tristate "Ricoh RP5C01"
  515. help
  516. If you say yes here you get support for the Ricoh RP5C01
  517. timekeeping chip. It is used in some Amiga models (e.g. A3000
  518. and A4000).
  519. This driver can also be built as a module. If so, the module
  520. will be called rtc-rp5c01.
  521. config RTC_DRV_V3020
  522. tristate "EM Microelectronic V3020"
  523. help
  524. If you say yes here you will get support for the
  525. EM Microelectronic v3020 RTC chip.
  526. This driver can also be built as a module. If so, the module
  527. will be called rtc-v3020.
  528. config RTC_DRV_WM831X
  529. tristate "Wolfson Microelectronics WM831x RTC"
  530. depends on MFD_WM831X
  531. help
  532. If you say yes here you will get support for the RTC subsystem
  533. of the Wolfson Microelectronics WM831X series PMICs.
  534. This driver can also be built as a module. If so, the module
  535. will be called "rtc-wm831x".
  536. config RTC_DRV_WM8350
  537. tristate "Wolfson Microelectronics WM8350 RTC"
  538. depends on MFD_WM8350
  539. help
  540. If you say yes here you will get support for the RTC subsystem
  541. of the Wolfson Microelectronics WM8350.
  542. This driver can also be built as a module. If so, the module
  543. will be called "rtc-wm8350".
  544. config RTC_DRV_SPEAR
  545. tristate "SPEAR ST RTC"
  546. depends on PLAT_SPEAR
  547. default y
  548. help
  549. If you say Y here you will get support for the RTC found on
  550. spear
  551. config RTC_DRV_PCF50633
  552. depends on MFD_PCF50633
  553. tristate "NXP PCF50633 RTC"
  554. help
  555. If you say yes here you get support for the RTC subsystem of the
  556. NXP PCF50633 used in embedded systems.
  557. config RTC_DRV_AB3100
  558. tristate "ST-Ericsson AB3100 RTC"
  559. depends on AB3100_CORE
  560. default y if AB3100_CORE
  561. help
  562. Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
  563. support. This chip contains a battery- and capacitor-backed RTC.
  564. config RTC_DRV_AB8500
  565. tristate "ST-Ericsson AB8500 RTC"
  566. depends on AB8500_CORE
  567. select RTC_INTF_DEV_UIE_EMUL
  568. help
  569. Select this to enable the ST-Ericsson AB8500 power management IC RTC
  570. support. This chip contains a battery- and capacitor-backed RTC.
  571. config RTC_DRV_NUC900
  572. tristate "NUC910/NUC920 RTC driver"
  573. depends on RTC_CLASS && ARCH_W90X900
  574. help
  575. If you say yes here you get support for the RTC subsystem of the
  576. NUC910/NUC920 used in embedded systems.
  577. comment "on-CPU RTC drivers"
  578. config RTC_DRV_DAVINCI
  579. tristate "TI DaVinci RTC"
  580. depends on ARCH_DAVINCI_DM365
  581. help
  582. If you say yes here you get support for the RTC on the
  583. DaVinci platforms (DM365).
  584. This driver can also be built as a module. If so, the module
  585. will be called rtc-davinci.
  586. config RTC_DRV_IMXDI
  587. tristate "Freescale IMX DryIce Real Time Clock"
  588. depends on SOC_IMX25
  589. depends on RTC_CLASS
  590. help
  591. Support for Freescale IMX DryIce RTC
  592. This driver can also be built as a module, if so, the module
  593. will be called "rtc-imxdi".
  594. config RTC_DRV_OMAP
  595. tristate "TI OMAP1"
  596. depends on ARCH_OMAP15XX || ARCH_OMAP16XX || ARCH_OMAP730 || ARCH_DAVINCI_DA8XX
  597. help
  598. Say "yes" here to support the real time clock on TI OMAP1 and
  599. DA8xx/OMAP-L13x chips. This driver can also be built as a
  600. module called rtc-omap.
  601. config HAVE_S3C_RTC
  602. bool
  603. help
  604. This will include RTC support for Samsung SoCs. If
  605. you want to include RTC support for any machine, kindly
  606. select this in the respective mach-XXXX/Kconfig file.
  607. config RTC_DRV_S3C
  608. tristate "Samsung S3C series SoC RTC"
  609. depends on ARCH_S3C64XX || HAVE_S3C_RTC
  610. help
  611. RTC (Realtime Clock) driver for the clock inbuilt into the
  612. Samsung S3C24XX series of SoCs. This can provide periodic
  613. interrupt rates from 1Hz to 64Hz for user programs, and
  614. wakeup from Alarm.
  615. The driver currently supports the common features on all the
  616. S3C24XX range, such as the S3C2410, S3C2412, S3C2413, S3C2440
  617. and S3C2442.
  618. This driver can also be build as a module. If so, the module
  619. will be called rtc-s3c.
  620. config RTC_DRV_EP93XX
  621. tristate "Cirrus Logic EP93XX"
  622. depends on ARCH_EP93XX
  623. help
  624. If you say yes here you get support for the
  625. RTC embedded in the Cirrus Logic EP93XX processors.
  626. This driver can also be built as a module. If so, the module
  627. will be called rtc-ep93xx.
  628. config RTC_DRV_SA1100
  629. tristate "SA11x0/PXA2xx/PXA910"
  630. depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
  631. help
  632. If you say Y here you will get access to the real time clock
  633. built into your SA11x0 or PXA2xx CPU.
  634. To compile this driver as a module, choose M here: the
  635. module will be called rtc-sa1100.
  636. config RTC_DRV_SH
  637. tristate "SuperH On-Chip RTC"
  638. depends on RTC_CLASS && SUPERH && HAVE_CLK
  639. help
  640. Say Y here to enable support for the on-chip RTC found in
  641. most SuperH processors.
  642. To compile this driver as a module, choose M here: the
  643. module will be called rtc-sh.
  644. config RTC_DRV_VR41XX
  645. tristate "NEC VR41XX"
  646. depends on CPU_VR41XX
  647. help
  648. If you say Y here you will get access to the real time clock
  649. built into your NEC VR41XX CPU.
  650. To compile this driver as a module, choose M here: the
  651. module will be called rtc-vr41xx.
  652. config RTC_DRV_PL030
  653. tristate "ARM AMBA PL030 RTC"
  654. depends on ARM_AMBA
  655. help
  656. If you say Y here you will get access to ARM AMBA
  657. PrimeCell PL030 RTC found on certain ARM SOCs.
  658. To compile this driver as a module, choose M here: the
  659. module will be called rtc-pl030.
  660. config RTC_DRV_PL031
  661. tristate "ARM AMBA PL031 RTC"
  662. depends on ARM_AMBA
  663. help
  664. If you say Y here you will get access to ARM AMBA
  665. PrimeCell PL031 RTC found on certain ARM SOCs.
  666. To compile this driver as a module, choose M here: the
  667. module will be called rtc-pl031.
  668. config RTC_DRV_AT32AP700X
  669. tristate "AT32AP700X series RTC"
  670. depends on PLATFORM_AT32AP
  671. help
  672. Driver for the internal RTC (Realtime Clock) on Atmel AVR32
  673. AT32AP700x family processors.
  674. config RTC_DRV_AT91RM9200
  675. tristate "AT91RM9200 or some AT91SAM9 RTC"
  676. depends on ARCH_AT91
  677. help
  678. Driver for the internal RTC (Realtime Clock) module found on
  679. Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
  680. this is powered by the backup power supply.
  681. config RTC_DRV_AT91SAM9
  682. tristate "AT91SAM9x/AT91CAP9 RTT as RTC"
  683. depends on ARCH_AT91 && !(ARCH_AT91RM9200 || ARCH_AT91X40)
  684. help
  685. RTC driver for the Atmel AT91SAM9x and AT91CAP9 internal RTT
  686. (Real Time Timer). These timers are powered by the backup power
  687. supply (such as a small coin cell battery), but do not need to
  688. be used as RTCs.
  689. (On AT91SAM9rl and AT91SAM9G45 chips you probably want to use the
  690. dedicated RTC module and leave the RTT available for other uses.)
  691. config RTC_DRV_AT91SAM9_RTT
  692. int
  693. range 0 1
  694. default 0
  695. prompt "RTT module Number" if ARCH_AT91SAM9263
  696. depends on RTC_DRV_AT91SAM9
  697. help
  698. More than one RTT module is available. You can choose which
  699. one will be used as an RTC. The default of zero is normally
  700. OK to use, though some systems use that for non-RTC purposes.
  701. config RTC_DRV_AT91SAM9_GPBR
  702. int
  703. range 0 3 if !ARCH_AT91SAM9263
  704. range 0 15 if ARCH_AT91SAM9263
  705. default 0
  706. prompt "Backup Register Number"
  707. depends on RTC_DRV_AT91SAM9
  708. help
  709. The RTC driver needs to use one of the General Purpose Backup
  710. Registers (GPBRs) as well as the RTT. You can choose which one
  711. will be used. The default of zero is normally OK to use, but
  712. on some systems other software needs to use that register.
  713. config RTC_DRV_AU1XXX
  714. tristate "Au1xxx Counter0 RTC support"
  715. depends on MIPS_ALCHEMY
  716. help
  717. This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
  718. counter) to be used as a RTC.
  719. This driver can also be built as a module. If so, the module
  720. will be called rtc-au1xxx.
  721. config RTC_DRV_BFIN
  722. tristate "Blackfin On-Chip RTC"
  723. depends on BLACKFIN && !BF561
  724. help
  725. If you say yes here you will get support for the
  726. Blackfin On-Chip Real Time Clock.
  727. This driver can also be built as a module. If so, the module
  728. will be called rtc-bfin.
  729. config RTC_DRV_RS5C313
  730. tristate "Ricoh RS5C313"
  731. depends on SH_LANDISK
  732. help
  733. If you say yes here you get support for the Ricoh RS5C313 RTC chips.
  734. config RTC_DRV_GENERIC
  735. tristate "Generic RTC support"
  736. # Please consider writing a new RTC driver instead of using the generic
  737. # RTC abstraction
  738. depends on PARISC || M68K || PPC || SUPERH32
  739. help
  740. Say Y or M here to enable RTC support on systems using the generic
  741. RTC abstraction. If you do not know what you are doing, you should
  742. just say Y.
  743. config RTC_DRV_PXA
  744. tristate "PXA27x/PXA3xx"
  745. depends on ARCH_PXA
  746. help
  747. If you say Y here you will get access to the real time clock
  748. built into your PXA27x or PXA3xx CPU.
  749. This RTC driver uses PXA RTC registers available since pxa27x
  750. series (RDxR, RYxR) instead of legacy RCNR, RTAR.
  751. config RTC_DRV_VT8500
  752. tristate "VIA/WonderMedia 85xx SoC RTC"
  753. depends on ARCH_VT8500
  754. help
  755. If you say Y here you will get access to the real time clock
  756. built into your VIA VT8500 SoC or its relatives.
  757. config RTC_DRV_SUN4V
  758. bool "SUN4V Hypervisor RTC"
  759. depends on SPARC64
  760. help
  761. If you say Y here you will get support for the Hypervisor
  762. based RTC on SUN4V systems.
  763. config RTC_DRV_STARFIRE
  764. bool "Starfire RTC"
  765. depends on SPARC64
  766. help
  767. If you say Y here you will get support for the RTC found on
  768. Starfire systems.
  769. config RTC_DRV_TX4939
  770. tristate "TX4939 SoC"
  771. depends on SOC_TX4939
  772. help
  773. Driver for the internal RTC (Realtime Clock) module found on
  774. Toshiba TX4939 SoC.
  775. config RTC_DRV_MV
  776. tristate "Marvell SoC RTC"
  777. depends on ARCH_KIRKWOOD || ARCH_DOVE
  778. help
  779. If you say yes here you will get support for the in-chip RTC
  780. that can be found in some of Marvell's SoC devices, such as
  781. the Kirkwood 88F6281 and 88F6192.
  782. This driver can also be built as a module. If so, the module
  783. will be called rtc-mv.
  784. config RTC_DRV_PS3
  785. tristate "PS3 RTC"
  786. depends on PPC_PS3
  787. help
  788. If you say yes here you will get support for the RTC on PS3.
  789. This driver can also be built as a module. If so, the module
  790. will be called rtc-ps3.
  791. config RTC_DRV_COH901331
  792. tristate "ST-Ericsson COH 901 331 RTC"
  793. depends on ARCH_U300
  794. help
  795. If you say Y here you will get access to ST-Ericsson
  796. COH 901 331 RTC clock found in some ST-Ericsson Mobile
  797. Platforms.
  798. This driver can also be built as a module. If so, the module
  799. will be called "rtc-coh901331".
  800. config RTC_DRV_STMP
  801. tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
  802. depends on ARCH_MXS
  803. help
  804. If you say yes here you will get support for the onboard
  805. STMP3xxx/i.MX23/i.MX28 RTC.
  806. This driver can also be built as a module. If so, the module
  807. will be called rtc-stmp3xxx.
  808. config RTC_DRV_PCAP
  809. tristate "PCAP RTC"
  810. depends on EZX_PCAP
  811. help
  812. If you say Y here you will get support for the RTC found on
  813. the PCAP2 ASIC used on some Motorola phones.
  814. config RTC_DRV_MC13XXX
  815. depends on MFD_MC13XXX
  816. tristate "Freescale MC13xxx RTC"
  817. help
  818. This enables support for the RTCs found on Freescale's PMICs
  819. MC13783 and MC13892.
  820. config RTC_DRV_MPC5121
  821. tristate "Freescale MPC5121 built-in RTC"
  822. depends on PPC_MPC512x || PPC_MPC52xx
  823. help
  824. If you say yes here you will get support for the
  825. built-in RTC on MPC5121 or on MPC5200.
  826. This driver can also be built as a module. If so, the module
  827. will be called rtc-mpc5121.
  828. config RTC_DRV_JZ4740
  829. tristate "Ingenic JZ4740 SoC"
  830. depends on RTC_CLASS
  831. depends on MACH_JZ4740
  832. help
  833. If you say yes here you get support for the Ingenic JZ4740 SoC RTC
  834. controller.
  835. This driver can also be buillt as a module. If so, the module
  836. will be called rtc-jz4740.
  837. config RTC_DRV_LPC32XX
  838. depends on ARCH_LPC32XX
  839. tristate "NXP LPC32XX RTC"
  840. help
  841. This enables support for the NXP RTC in the LPC32XX
  842. This driver can also be buillt as a module. If so, the module
  843. will be called rtc-lpc32xx.
  844. config RTC_DRV_PM8XXX
  845. tristate "Qualcomm PMIC8XXX RTC"
  846. depends on MFD_PM8XXX
  847. help
  848. If you say yes here you get support for the
  849. Qualcomm PMIC8XXX RTC.
  850. To compile this driver as a module, choose M here: the
  851. module will be called rtc-pm8xxx.
  852. config RTC_DRV_TEGRA
  853. tristate "NVIDIA Tegra Internal RTC driver"
  854. depends on RTC_CLASS && ARCH_TEGRA
  855. help
  856. If you say yes here you get support for the
  857. Tegra 200 series internal RTC module.
  858. This drive can also be built as a module. If so, the module
  859. will be called rtc-tegra.
  860. config RTC_DRV_TILE
  861. tristate "Tilera hypervisor RTC support"
  862. depends on TILE
  863. help
  864. Enable support for the Linux driver side of the Tilera
  865. hypervisor's real-time clock interface.
  866. config RTC_DRV_PUV3
  867. tristate "PKUnity v3 RTC support"
  868. depends on ARCH_PUV3
  869. help
  870. This enables support for the RTC in the PKUnity-v3 SoCs.
  871. This drive can also be built as a module. If so, the module
  872. will be called rtc-puv3.
  873. config RTC_DRV_LOONGSON1
  874. tristate "loongson1 RTC support"
  875. depends on MACH_LOONGSON1
  876. help
  877. This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
  878. counter) to be used as a RTC.
  879. This driver can also be built as a module. If so, the module
  880. will be called rtc-ls1x.
  881. config RTC_DRV_MXC
  882. tristate "Freescale MXC Real Time Clock"
  883. depends on ARCH_MXC
  884. depends on RTC_CLASS
  885. help
  886. If you say yes here you get support for the Freescale MXC
  887. RTC module.
  888. This driver can also be built as a module, if so, the module
  889. will be called "rtc-mxc".
  890. endif # RTC_CLASS