Kconfig - OpenGrok cross reference for /linux-6.8/drivers/rtc/Kconfig

1 # SPDX-License-Identifier: GPL-2.0-only
41 	  device should record time in UTC, since the kernel won't do
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
58 	  in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
69 	  one can sleep when setting time, because it runs in the workqueue
75 	  Say yes here to enable debugging support in the RTC framework
141 	  once-per-second update interrupts, used for synchronization.
158 	  This driver can also be built as a module. If so, the module
159 	  will be called rtc-test.
169 	  If you say yes here you get support for RTC function in Marvell
172 	  This driver can also be built as a module. If so, the module
173 	  will be called rtc-88pm860x.
179 	  If you say yes here you get support for RTC function in Marvell
182 	  This driver can also be built as a module. If so, the module
183 	  will be called rtc-88pm80x.
187 	tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
190 	  AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
192 	  This driver can also be built as a module. If so, the module
193 	  will be called rtc-ab-b5ze-s3.
197 	tristate "Abracon AB-RTCMC-32.768kHz-EOZ9"
200 	  AB-RTCMC-32.768kHz-EOA9 I2C RTC chip.
202 	  This driver can also be built as a module. If so, the module
203 	  will be called rtc-ab-e0z9.
210 	  families of ultra-low-power  battery- and capacitor-backed real-time
213 	  This driver can also be built as a module. If so, the module
214 	  will be called rtc-abx80x.
217 	tristate "X-Powers AC100"
220 	  If you say yes here you get support for the real-time clock found
221 	  in X-Powers AC100 family peripheral ICs.
223 	  This driver can also be built as a module. If so, the module
224 	  will be called rtc-ac100.
227 	tristate "Broadcom STB wake-timer"
231 	  If you say yes here you get support for the wake-timer found on
234 	  This driver can also be built as a module. If so, the module will
235 	  be called rtc-brcmstb-waketimer.
244 	  This driver can also be built as a module. If so, the module
245 	  will be called rtc-as3722.
248 	tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
255 	  ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
256 	  In some cases the RTC must already have been initialized (by
261 	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
264 	  This driver can also be built as a module. If so, the module
265 	  will be called rtc-ds1307.
268 	bool "Century bit support for rtc-ds1307"
277 	  reading the date will return a date in the next century.
285 	  DS1374 real-time clock chips. If an interrupt is associated
288 	  This driver can also be built as a module. If so, the module
289 	  will be called rtc-ds1374.
297 	  watchdog timer in the Dallas Semiconductor DS1374
298 	  real-time clock chips.
306 	  This driver can also be built as a module. If so, the module
307 	  will be called rtc-ds1672.
317 	  This driver can also be built as a module. If so, the module
318 	  will be called rtc-hym8563.
332 	  This driver can also be built as a module. If so, the module
333 	  will be called rtc-max6900.
343 	  This driver can also be built as a module. If so, the module
344 	  will be called rtc-max8907.
353 	  This driver can also be built as a module. If so, the module
354 	  will be called rtc-max8925.
363 	  This driver can also be built as a module. If so, the module
364 	  will be called rtc-max8998.
373 	  This driver can also be built as a module. If so, the module
374 	  will be called rtc-max8997.
386 	  This driver can also be built as a module. If so, the module
387 	  will be called rtc-max31335.
396 	  This driver can also be built as a module. If so, the module
397 	  will be called rtc-max77686.
406 	   This driver can also be built as a module, if so, the module will be
407 	   called "rtc-nct3018y".
416 	  This driver can also be built as a module. If so, the module
417 	  will be called rk808-rtc.
425 	  This driver can also be built as a module. If so, the module
426 	  will be called rtc-rs5c372.
434 	  This driver can also be built as a module. If so, the module
435 	  will be called rtc-isl1208.
444 	  This driver can also be built as a module. If so, the module
445 	  will be called rtc-isl12022.
454 	  This driver can also be built as a module. If so, the module
455 	  will be called rtc-isl12026.
463 	  This driver can also be built as a module. If so, the module
464 	  will be called rtc-x1205.
473 	  This driver can also be built as a module. If so, the module
474 	  will be called rtc-pcf8523.
482 	  This driver can also be built as a module. If so, the module
483 	  will be called rtc-pcf85063.
491 	  This driver can also be built as a module. If so, the module
492 	  will be called rtc-pcf85363.
494 	  The nvmem interface will be named pcf85363-#, where # is the
495 	  zero-based instance number.
504 	  This driver can also be built as a module. If so, the module
505 	  will be called rtc-pcf8563.
516 	  This driver can also be built as a module. If so, the module
517 	  will be called rtc-pcf8583.
527 	  This driver can also be built as a module. If so, the module
528 	  will be called rtc-m41t80.
535 	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
544 	  This driver can also be built as a module. If so, the module
545 	  will be called rtc-bd70528.
553 	  This driver can also be built as a module. If so, the module
554 	  will be called rtc-bq32k.
573 	  This driver can also be built as a module. If so, the module
574 	  will be called rtc-twl.
583 	  This driver can also be built as a module. If so, the module
584 	  will be called rtc-palma.
603 	  This driver can also be built as a module. If so, the module
604 	  will be called rtc-tps6594.
613 	  This driver can also be built as a module. If so, the module
614 	  will be called rtc-tps65910.
623 	  This driver can also be built as a module. If so, the module
624 	  will be called rtc-rc5t583.
633 	  This driver can also be built as a module. If so, the module
634 	  will be called rtc-rc5t619.
637 	tristate "Seiko Instruments S-35390A"
641 	  Instruments S-35390A.
643 	  This driver can also be built as a module. If so the module
644 	  will be called rtc-s35390a.
654 	  This driver can also be built as a module. If so the module
655 	  will be called rtc-fm3130.
664 	  This driver can also be built as a module. If so, the module
665 	  will be called rtc-rx8010.
668 	tristate "Epson RX-8571/RX-8581"
671 	  If you say yes here you will get support for the Epson RX-8571/
672 	  RX-8581.
674 	  This driver can also be built as a module. If so the module
675 	  will be called rtc-rx8581.
678 	tristate "Epson RX-8025SA/NB"
681 	  RX-8025SA/NB RTC chips.
683 	  This driver can also be built as a module. If so, the module
684 	  will be called rtc-rx8025.
692 	  This driver can also be built as a module. If so, the module
693 	  will be called rtc-em3027.
702 	  This driver can also be built as a module. If so, the module
703 	  will be called rtc-rv3028.
712 	  This driver can also be built as a module. If so, the module
713 	  will be called rtc-rv3032.
721 	  This driver can also be built as a module. If so, the module
722 	  will be called rtc-rv8803.
733 	  This driver can also be built as a module. If so, the module
734 	  will be called rtc-s5m.
743 	  This driver can also be built as a module. If so, the module
744 	  will be called rtc-sd3078
758 	  This driver can also be built as a module. If so, the module
759 	  will be called rtc-m41t93.
767 	  This driver can also be built as a module. If so, the module
768 	  will be called rtc-m41t94.
776 	  This driver can also be built as a module. If so, the module
777 	  will be called rtc-ds1302.
784 	  charger, alarms, and NVRAM in addition to the clock.
786 	  This driver can also be built as a module. If so, the module
787 	  will be called rtc-ds1305.
797 	  This driver can also be built as a module. If so, the module
798 	  will be called rtc-ds1343.
810 	  This driver can also be built as a module. If so, the module
811 	  will be called rtc-ds1347.
822 	  This driver can also be built as a module. If so, the module
823 	  will be called rtc-ds1390.
834 	  This driver can also be built as a module. If so, the module
835 	  will be called rtc-max6916.
838 	tristate "Epson RTC-9701JE"
841 	  Epson RTC-9701JE SPI RTC chip.
843 	  This driver can also be built as a module. If so, the module
844 	  will be called rtc-r9701.
847 	tristate "Epson RX-4581"
849 	  If you say yes here you will get support for the Epson RX-4581.
851 	  This driver can also be built as a module. If so the module
852 	  will be called rtc-rx4581.
860 	  This driver can also be built as a module. If so, the module
861 	  will be called rtc-rs5c348.
869 	  This driver can also be built as a module. If so, the module
870 	  will be called rtc-max6902.
879 	  This driver can also be built as a module. If so, the module
880 	  will be called rtc-pcf2123.
887 	  This driver can also be built as a module. If so the module
888 	  will be called rtc-mcp795.
911 	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
914 	  This driver can also be built as a module.  If so, the module
915 	  will be called rtc-ds3232.
923 	  rtc-ds3232
940 	  This driver can also be built as a module. If so, the module
941 	  will be called rtc-pcf2127.
952 	  This driver can also be built as a module. If so, the module
953 	  will be called rtc-rv3029c2.
962 	  rtc-rv3029.
965 	tristate "Epson RX-6110"
970 	  If you say yes here you will get support for the Epson RX-6110.
972 	  This driver can also be built as a module. If so the module
973 	  will be called rtc-rx6110.
982 	tristate "PC-style 'CMOS'"
989 	  found in every PC or ACPI-based system, and some other boards.
990 	  Specifically the original MC146818, compatibles like those in
999 	  This driver can also be built as a module. If so, the module
1000 	  will be called rtc-cmos.
1003 	bool "Alpha PC-style CMOS"
1009 	  Direct support for the real-time clock found on every Alpha
1010 	  system, specifically MC146818 compatibles.  If in doubt, say Y.
1031 	  This driver can also be built as a module. If so, the module
1032 	  will be called rtc-ds1511.
1041 	  This driver can also be built as a module. If so, the module
1042 	  will be called rtc-ds1553.
1053 	  This driver can also be built as a module. If so, the module
1054 	  will be called rtc-ds1685.
1067 	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
1068 	  systems, as well as EPPC-405-UC modules by electronic system design
1079 	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
1091 	  This chip features 2kb of extended NV-SRAM.  It may possibly be
1092 	  found in some SGI O2 systems (rare).
1100 	  This chip features 4kb of extended NV-SRAM.
1108 	  This chip features 8kb of extended NV-SRAM.
1119 	  This driver can also be built as a module. If so, the module
1120 	  will be called rtc-ds1742.
1128 	  This driver can also be built as a module. If so, the module
1129 	  will be called rtc-ds2404.
1136 	  DA9052-BC and DA9053-AA/Bx PMICs.
1145 	  This driver can also be built as a module. If so, the module
1146 	  will be called rtc-da9055
1155 	  This driver can also be built as a module. If so, the module
1156 	  will be called "rtc-da9063".
1165 	  This driver can also be built as a module. If so, the module
1166 	  will be called rtc-efi.
1175 	  This driver can also be built as a module. If so, the module
1176 	  will be called rtc-stk17ta8.
1185 	  This driver can also be built as a module. If so, the module
1186 	  will be called rtc-m48t86.
1195 	  This driver can also be built as a module, if so, the module
1196 	  will be called "rtc-m48t35".
1205 	  These chips are usually found in Sun SPARC and UltraSPARC
1208 	  This driver can also be built as a module, if so, the module
1209 	  will be called "rtc-m48t59".
1216 	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1218 	  This driver can also be built as a module. If so, the module
1219 	  will be called rtc-msm6242.
1229 	  This driver can also be built as a module. If so, the module
1230 	  will be called rtc-bq4802.
1237 	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1240 	  This driver can also be built as a module. If so, the module
1241 	  will be called rtc-rp5c01.
1251 	  This driver can also be built as a module. If so, the module
1252 	  will be called "rtc-gamecube".
1261 	  This driver can also be built as a module. If so, the module
1262 	  will be called "rtc-wm831x".
1271 	  This driver can also be built as a module. If so, the module
1272 	  will be called "rtc-wm8350".
1282 	  This driver can also be built as a module. If so, the module
1283 	  will be called rtc-sc27xx.
1298 	  NXP PCF50633 used in embedded systems.
1301 	tristate "ST-Ericsson AB8500 RTC"
1306 	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1307 	  support. This chip contains a battery- and capacitor-backed RTC.
1317 	  This driver can also be built as a module. If so, the module
1318 	  will be called rtc-opal.
1321 	tristate "OP-TEE based RTC driver"
1324 	  Select this to get support for OP-TEE based RTC control on SoCs where
1327 	  This driver can also be built as a module. If so, the module
1328 	  will be called rtc-optee.
1344 	  This driver can also be built as a module. If so, the module
1345 	  will be called rtc-cros-ec.
1352 	  embedded controller found in certain e-book readers designed by the
1355 comment "on-CPU RTC drivers"
1364 	  This driver can also be built as a module. If so, the module
1365 	  will be called rtc-asm9260.
1374 	  This driver can also be built as a module. If so, the module
1375 	  will be called rtc-digicolor.
1384 	   This driver can also be built as a module, if so, the module
1385 	   will be called "rtc-imxdi".
1391 	   For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A,
1397 	   This driver can also be built as a module, if so, the module
1398 	   will be called "rtc-fsl-ftm-alarm".
1408 	   This driver can also be built as a module, if so, the module
1409 	   will be called "rtc-meson".
1419 	  This driver can also be built as a module. If so, the module
1420 	  will be called rtc-meson-vrtc.
1430 	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1432 	  This driver can also be built as a module, if so, module
1433 	  will be called rtc-omap.
1446 	  will be called rtc-s3c.
1453 	  RTC embedded in the Cirrus Logic EP93XX processors.
1455 	  This driver can also be built as a module. If so, the module
1456 	  will be called rtc-ep93xx.
1463 	  built into your SA11x0 or PXA2xx CPU.
1466 	  module will be called rtc-sa1100.
1469 	tristate "SuperH On-Chip RTC"
1472 	  Say Y here to enable support for the on-chip RTC found in
1473 	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1476 	  module will be called rtc-sh.
1482 	  Say 'yes' to get support for the real-time clock present in
1483 	  Sunplus SP7021 - a SoC for industrial applications. It provides
1488 	  This driver can also be built as a module. If so, the module
1489 	  will be called rtc-sunplus.
1499 	  module will be called rtc-pl030.
1509 	  module will be called rtc-pl031.
1539 	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1542 	  This driver can also be built as a module. If so, the module
1543 	  will be called rtc-au1xxx.
1574 	 built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1585 	  built into your VIA VT8500 SoC or its relatives.
1601 	  If you say Y here you will get support for the RTC found in
1622 	  If you say yes here you will get support for the in-chip RTC
1623 	  that can be found in some of Marvell's SoC devices, such as
1626 	  This driver can also be built as a module. If so, the module
1627 	  will be called rtc-mv.
1634 	  If you say yes here you will get support for the in-chip RTC
1635 	  that can be found in the Armada 38x Marvell's SoC device
1637 	  This driver can also be built as a module. If so, the module
1638 	  will be called armada38x-rtc.
1648 	  module will be called rtc-cadence.
1658 	  This driver can also be built as a module. If so, the module
1659 	  will be called rtc-ftrtc010.
1667 	  This driver can also be built as a module. If so, the module
1668 	  will be called rtc-ps3.
1678 	  This driver can also be built as a module. If so, the module
1679 	  will be called rtc-stmp3xxx.
1696 	tristate "Freescale MPC5121 built-in RTC"
1700 	  built-in RTC on MPC5121 or on MPC5200.
1702 	  This driver can also be built as a module. If so, the module
1703 	  will be called rtc-mpc5121.
1713 	  This driver can also be built as a module. If so, the module
1714 	  will be called rtc-jz4740.
1717 	tristate "Loongson On-chip RTC"
1721 	  This is a driver for the Loongson on-chip Counter0 (Time-Of-Year
1723 	  It can be found on Loongson-1 series cpu, Loongson-2K series cpu
1726 	  This driver can also be built as a module. If so, the module
1727 	  will be called rtc-loongson.
1739 	  the hardware RTC. This driver can also be built as a module. If
1740 	  so, the module will be called rtc-lpc24xx.
1746 	  This enables support for the NXP RTC in the LPC32XX
1748 	  This driver can also be built as a module. If so, the module
1749 	  will be called rtc-lpc32xx.
1759 	  module will be called rtc-pm8xxx.
1768 	  This drive can also be built as a module. If so, the module
1769 	  will be called rtc-tegra.
1780 	   This driver can also be built as a module, if so, the module
1781 	   will be called "rtc-mxc".
1790 	   SRTC module in i.MX53 processor.
1792 	   This driver can also be built as a module, if so, the module
1793 	   will be called "rtc-mxc_v2".
1805 	   This driver can also be built as a module, if so, the module
1806 	   will be called "rtc-snvs".
1817 	   This driver can also be built as a module, if so, the module
1818 	   will be called "rtc-bbnsm".
1837 	  module will be called rtc-st-lpc.
1846 	   This driver can also be built as a module. If so, the module
1847 	   will be called rtc-moxart
1853 	  This enables support for the real time clock built in the MediaTek
1856 	  This drive can also be built as a module. If so, the module
1857 	  will be called rtc-mt2712.
1873 	  This enables support for the real time clock built in the MediaTek
1876 	  This drive can also be built as a module. If so, the module
1877 	  will be called rtc-mt7622.
1880 	tristate "APM X-Gene RTC"
1884 	  If you say yes here you get support for the APM X-Gene SoC real time
1887 	  This driver can also be built as a module, if so, the module
1888 	  will be called "rtc-xgene".
1897 	   This driver can also be built as a module. If so, the module
1898 	   will be called rtc-pic32
1901 	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1906 	   RTC-7301SF/DG chips.
1908 	   This driver can also be built as a module. If so, the module
1909 	   will be called rtc-r7301.
1916 	   If you say yes here you get support for the STM32 On-Chip
1919 	   This driver can also be built as a module, if so, the module
1920 	   will be called "rtc-stm32".
1945 	  This driver can also be built as a module, if so, the module
1946 	  will be called "rtc-aspeed".
1956 	  This driver can also be built as a module, if so, the module
1957 	  will be called "rtc-ti-k3".
1965 	   On-Chip Real Time Clock.
1967 	   This driver can also be built as a module, if so, the module
1968 	   will be called "rtc-ma35d1".
1982 	  rtc-hid-sensor-time.
2001 	  This can also be built as a module. If so, the module will
2008 	  If you say yes here you get support for the Mstar MSC313e On-Chip
2011 	  This driver can also be built as a module, if so, the module
2012 	  will be called "rtc-msc313".
2015 	tristate "Microchip PolarFire SoC built-in RTC"
2019 	  built-in RTC on Polarfire SoC.
2021 	  This driver can also be built as a module, if so, the module
2022 	  will be called "rtc-mpfs".
2029 	  If you say yes here you get support for the SigmaStar SSD202D On-Chip
2032 	  This driver can also be built as a module, if so, the module
2033 	  will be called "rtc-ssd20xd".