Kconfig - OpenGrok cross reference for /linux-6.15/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.
189 	  If you say yes here you will get support for the RTC function in the
192 	  This driver can also be built as a module. If so, the module
193 	  will be called rtc-88pm886.
197 	tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
200 	  AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
202 	  This driver can also be built as a module. If so, the module
203 	  will be called rtc-ab-b5ze-s3.
207 	tristate "Abracon AB-RTCMC-32.768kHz-EOZ9"
210 	  AB-RTCMC-32.768kHz-EOA9 I2C RTC chip.
212 	  This driver can also be built as a module. If so, the module
213 	  will be called rtc-ab-e0z9.
220 	  families of ultra-low-power  battery- and capacitor-backed real-time
223 	  This driver can also be built as a module. If so, the module
224 	  will be called rtc-abx80x.
227 	tristate "X-Powers AC100"
230 	  If you say yes here you get support for the real-time clock found
231 	  in X-Powers AC100 family peripheral ICs.
233 	  This driver can also be built as a module. If so, the module
234 	  will be called rtc-ac100.
237 	tristate "Broadcom STB wake-timer"
241 	  If you say yes here you get support for the wake-timer found on
244 	  This driver can also be built as a module. If so, the module will
245 	  be called rtc-brcmstb-waketimer.
254 	  This driver can also be built as a module. If so, the module
255 	  will be called rtc-as3722.
258 	tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
265 	  ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
266 	  In some cases the RTC must already have been initialized (by
271 	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
274 	  This driver can also be built as a module. If so, the module
275 	  will be called rtc-ds1307.
278 	bool "Century bit support for rtc-ds1307"
287 	  reading the date will return a date in the next century.
295 	  DS1374 real-time clock chips. If an interrupt is associated
298 	  This driver can also be built as a module. If so, the module
299 	  will be called rtc-ds1374.
307 	  watchdog timer in the Dallas Semiconductor DS1374
308 	  real-time clock chips.
316 	  This driver can also be built as a module. If so, the module
317 	  will be called rtc-ds1672.
327 	  This driver can also be built as a module. If so, the module
328 	  will be called rtc-hym8563.
342 	  This driver can also be built as a module. If so, the module
343 	  will be called rtc-max6900.
353 	  This driver can also be built as a module. If so, the module
354 	  will be called rtc-max8907.
363 	  This driver can also be built as a module. If so, the module
364 	  will be called rtc-max8925.
373 	  This driver can also be built as a module. If so, the module
374 	  will be called rtc-max8998.
383 	  This driver can also be built as a module. If so, the module
384 	  will be called rtc-max8997.
396 	  This driver can also be built as a module. If so, the module
397 	  will be called rtc-max31335.
406 	  This driver can also be built as a module. If so, the module
407 	  will be called rtc-max77686.
416 	   This driver can also be built as a module, if so, the module will be
417 	   called "rtc-nct3018y".
426 	  This driver can also be built as a module. If so, the module
427 	  will be called rk808-rtc.
435 	  This driver can also be built as a module. If so, the module
436 	  will be called rtc-rs5c372.
444 	  This driver can also be built as a module. If so, the module
445 	  will be called rtc-isl1208.
454 	  This driver can also be built as a module. If so, the module
455 	  will be called rtc-isl12022.
464 	  This driver can also be built as a module. If so, the module
465 	  will be called rtc-isl12026.
473 	  This driver can also be built as a module. If so, the module
474 	  will be called rtc-x1205.
483 	  This driver can also be built as a module. If so, the module
484 	  will be called rtc-pcf8523.
492 	  This driver can also be built as a module. If so, the module
493 	  will be called rtc-pcf85063.
501 	  This driver can also be built as a module. If so, the module
502 	  will be called rtc-pcf85363.
504 	  The nvmem interface will be named pcf85363-#, where # is the
505 	  zero-based instance number.
515 	  This driver can also be built as a module. If so, the module
516 	  will be called rtc-pcf8563.
527 	  This driver can also be built as a module. If so, the module
528 	  will be called rtc-pcf8583.
538 	  This driver can also be built as a module. If so, the module
539 	  will be called rtc-m41t80.
546 	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
555 	  This driver can also be built as a module. If so, the module
556 	  will be called rtc-bd70528.
564 	  This driver can also be built as a module. If so, the module
565 	  will be called rtc-bq32k.
584 	  This driver can also be built as a module. If so, the module
585 	  will be called rtc-twl.
594 	  This driver can also be built as a module. If so, the module
595 	  will be called rtc-palma.
614 	  This driver can also be built as a module. If so, the module
615 	  will be called rtc-tps6594.
624 	  This driver can also be built as a module. If so, the module
625 	  will be called rtc-tps65910.
634 	  This driver can also be built as a module. If so, the module
635 	  will be called rtc-rc5t583.
644 	  This driver can also be built as a module. If so, the module
645 	  will be called rtc-rc5t619.
648 	tristate "Seiko Instruments S-35390A"
652 	  Instruments S-35390A.
654 	  This driver can also be built as a module. If so the module
655 	  will be called rtc-s35390a.
665 	  This driver can also be built as a module. If so the module
666 	  will be called rtc-fm3130.
675 	  This driver can also be built as a module. If so, the module
676 	  will be called rtc-rx8010.
685 	  This driver can also be built as a module. If so, the module will be
686 	  called rtc-rx8111.
689 	tristate "Epson RX-8571/RX-8581"
692 	  If you say yes here you will get support for the Epson RX-8571/
693 	  RX-8581.
695 	  This driver can also be built as a module. If so the module
696 	  will be called rtc-rx8581.
699 	tristate "Epson RX-8025SA/NB"
702 	  RX-8025SA/NB RTC chips.
704 	  This driver can also be built as a module. If so, the module
705 	  will be called rtc-rx8025.
713 	  This driver can also be built as a module. If so, the module
714 	  will be called rtc-em3027.
723 	  This driver can also be built as a module. If so, the module
724 	  will be called rtc-rv3028.
733 	  This driver can also be built as a module. If so, the module
734 	  will be called rtc-rv3032.
742 	  This driver can also be built as a module. If so, the module
743 	  will be called rtc-rv8803.
754 	  This driver can also be built as a module. If so, the module
755 	  will be called rtc-s5m.
764 	  This driver can also be built as a module. If so, the module
765 	  will be called rtc-sd2405al.
774 	  This driver can also be built as a module. If so, the module
775 	  will be called rtc-sd3078
789 	  This driver can also be built as a module. If so, the module
790 	  will be called rtc-m41t93.
798 	  This driver can also be built as a module. If so, the module
799 	  will be called rtc-m41t94.
807 	  This driver can also be built as a module. If so, the module
808 	  will be called rtc-ds1302.
815 	  charger, alarms, and NVRAM in addition to the clock.
817 	  This driver can also be built as a module. If so, the module
818 	  will be called rtc-ds1305.
828 	  This driver can also be built as a module. If so, the module
829 	  will be called rtc-ds1343.
841 	  This driver can also be built as a module. If so, the module
842 	  will be called rtc-ds1347.
853 	  This driver can also be built as a module. If so, the module
854 	  will be called rtc-ds1390.
865 	  This driver can also be built as a module. If so, the module
866 	  will be called rtc-max6916.
869 	tristate "Epson RTC-9701JE"
872 	  Epson RTC-9701JE SPI RTC chip.
874 	  This driver can also be built as a module. If so, the module
875 	  will be called rtc-r9701.
878 	tristate "Epson RX-4581"
880 	  If you say yes here you will get support for the Epson RX-4581.
882 	  This driver can also be built as a module. If so the module
883 	  will be called rtc-rx4581.
891 	  This driver can also be built as a module. If so, the module
892 	  will be called rtc-rs5c348.
900 	  This driver can also be built as a module. If so, the module
901 	  will be called rtc-max6902.
910 	  This driver can also be built as a module. If so, the module
911 	  will be called rtc-pcf2123.
918 	  This driver can also be built as a module. If so the module
919 	  will be called rtc-mcp795.
942 	  DS3232 and DS3234 real-time clock chips. If an interrupt is associated
945 	  This driver can also be built as a module.  If so, the module
946 	  will be called rtc-ds3232.
954 	  rtc-ds3232
971 	  This driver can also be built as a module. If so, the module
972 	  will be called rtc-pcf2127.
983 	  This driver can also be built as a module. If so, the module
984 	  will be called rtc-rv3029c2.
993 	  rtc-rv3029.
996 	tristate "Epson RX-6110"
1001 	  If you say yes here you will get support for the Epson RX-6110.
1003 	  This driver can also be built as a module. If so the module
1004 	  will be called rtc-rx6110.
1013 	tristate "PC-style 'CMOS'"
1020 	  found in every PC or ACPI-based system, and some other boards.
1021 	  Specifically the original MC146818, compatibles like those in
1030 	  This driver can also be built as a module. If so, the module
1031 	  will be called rtc-cmos.
1034 	bool "Alpha PC-style CMOS"
1040 	  Direct support for the real-time clock found on every Alpha
1041 	  system, specifically MC146818 compatibles.  If in doubt, say Y.
1062 	  This driver can also be built as a module. If so, the module
1063 	  will be called rtc-ds1511.
1072 	  This driver can also be built as a module. If so, the module
1073 	  will be called rtc-ds1553.
1084 	  This driver can also be built as a module. If so, the module
1085 	  will be called rtc-ds1685.
1098 	  This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
1099 	  systems, as well as EPPC-405-UC modules by electronic system design
1110 	  Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
1122 	  This chip features 2kb of extended NV-SRAM.  It may possibly be
1123 	  found in some SGI O2 systems (rare).
1131 	  This chip features 4kb of extended NV-SRAM.
1139 	  This chip features 8kb of extended NV-SRAM.
1150 	  This driver can also be built as a module. If so, the module
1151 	  will be called rtc-ds1742.
1159 	  This driver can also be built as a module. If so, the module
1160 	  will be called rtc-ds2404.
1167 	  DA9052-BC and DA9053-AA/Bx PMICs.
1176 	  This driver can also be built as a module. If so, the module
1177 	  will be called rtc-da9055
1186 	  This driver can also be built as a module. If so, the module
1187 	  will be called "rtc-da9063".
1196 	  This driver can also be built as a module. If so, the module
1197 	  will be called rtc-efi.
1206 	  This driver can also be built as a module. If so, the module
1207 	  will be called rtc-stk17ta8.
1216 	  This driver can also be built as a module. If so, the module
1217 	  will be called rtc-m48t86.
1226 	  This driver can also be built as a module, if so, the module
1227 	  will be called "rtc-m48t35".
1236 	  These chips are usually found in Sun SPARC and UltraSPARC
1239 	  This driver can also be built as a module, if so, the module
1240 	  will be called "rtc-m48t59".
1247 	  timekeeping chip. It is used in some Amiga models (e.g. A2000).
1249 	  This driver can also be built as a module. If so, the module
1250 	  will be called rtc-msm6242.
1260 	  This driver can also be built as a module. If so, the module
1261 	  will be called rtc-bq4802.
1268 	  timekeeping chip. It is used in some Amiga models (e.g. A3000
1271 	  This driver can also be built as a module. If so, the module
1272 	  will be called rtc-rp5c01.
1282 	  This driver can also be built as a module. If so, the module
1283 	  will be called "rtc-gamecube".
1292 	  This driver can also be built as a module. If so, the module
1293 	  will be called "rtc-wm831x".
1302 	  This driver can also be built as a module. If so, the module
1303 	  will be called "rtc-wm8350".
1313 	  This driver can also be built as a module. If so, the module
1314 	  will be called rtc-sc27xx.
1325 	tristate "ST-Ericsson AB8500 RTC"
1330 	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1331 	  support. This chip contains a battery- and capacitor-backed RTC.
1341 	  This driver can also be built as a module. If so, the module
1342 	  will be called rtc-opal.
1345 	tristate "OP-TEE based RTC driver"
1348 	  Select this to get support for OP-TEE based RTC control on SoCs where
1351 	  This driver can also be built as a module. If so, the module
1352 	  will be called rtc-optee.
1368 	  This driver can also be built as a module. If so, the module
1369 	  will be called rtc-cros-ec.
1376 	  embedded controller found in certain e-book readers designed by the
1379 comment "on-CPU RTC drivers"
1388 	  This driver can also be built as a module. If so, the module
1389 	  will be called rtc-asm9260.
1398 	  This driver can also be built as a module. If so, the module
1399 	  will be called rtc-digicolor.
1408 	   This driver can also be built as a module, if so, the module
1409 	   will be called "rtc-imxdi".
1415 	   For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A,
1421 	   This driver can also be built as a module, if so, the module
1422 	   will be called "rtc-fsl-ftm-alarm".
1432 	   This driver can also be built as a module, if so, the module
1433 	   will be called "rtc-meson".
1443 	  This driver can also be built as a module. If so, the module
1444 	  will be called rtc-meson-vrtc.
1454 	  present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
1456 	  This driver can also be built as a module, if so, module
1457 	  will be called rtc-omap.
1470 	  will be called rtc-s3c.
1477 	  RTC embedded in the Cirrus Logic EP93XX processors.
1479 	  This driver can also be built as a module. If so, the module
1480 	  will be called rtc-ep93xx.
1487 	  built into your SA11x0 or PXA2xx CPU.
1490 	  module will be called rtc-sa1100.
1493 	tristate "SuperH On-Chip RTC"
1496 	  Say Y here to enable support for the on-chip RTC found in
1497 	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1500 	  module will be called rtc-sh.
1506 	  Say 'yes' to get support for the real-time clock present in
1507 	  Sunplus SP7021 - a SoC for industrial applications. It provides
1512 	  This driver can also be built as a module. If so, the module
1513 	  will be called rtc-sunplus.
1523 	  module will be called rtc-pl030.
1533 	  module will be called rtc-pl031.
1563 	  This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
1566 	  This driver can also be built as a module. If so, the module
1567 	  will be called rtc-au1xxx.
1598 	 built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1609 	  built into your VIA VT8500 SoC or its relatives.
1625 	  If you say Y here you will get support for the RTC found in
1646 	  If you say yes here you will get support for the in-chip RTC
1647 	  that can be found in some of Marvell's SoC devices, such as
1650 	  This driver can also be built as a module. If so, the module
1651 	  will be called rtc-mv.
1658 	  If you say yes here you will get support for the in-chip RTC
1659 	  that can be found in the Armada 38x Marvell's SoC device
1661 	  This driver can also be built as a module. If so, the module
1662 	  will be called armada38x-rtc.
1672 	  module will be called rtc-cadence.
1682 	  This driver can also be built as a module. If so, the module
1683 	  will be called rtc-ftrtc010.
1691 	  This driver can also be built as a module. If so, the module
1692 	  will be called rtc-ps3.
1702 	  This driver can also be built as a module. If so, the module
1703 	  will be called rtc-stmp3xxx.
1720 	tristate "Freescale MPC5121 built-in RTC"
1724 	  built-in RTC on MPC5121 or on MPC5200.
1726 	  This driver can also be built as a module. If so, the module
1727 	  will be called rtc-mpc5121.
1737 	  This driver can also be built as a module. If so, the module
1738 	  will be called rtc-jz4740.
1741 	tristate "Loongson On-chip RTC"
1745 	  This is a driver for the Loongson on-chip Counter0 (Time-Of-Year
1747 	  It can be found on Loongson-1 series cpu, Loongson-2K series cpu
1750 	  This driver can also be built as a module. If so, the module
1751 	  will be called rtc-loongson.
1763 	  the hardware RTC. This driver can also be built as a module. If
1764 	  so, the module will be called rtc-lpc24xx.
1770 	  This enables support for the NXP RTC in the LPC32XX
1772 	  This driver can also be built as a module. If so, the module
1773 	  will be called rtc-lpc32xx.
1783 	  module will be called rtc-pm8xxx.
1792 	  This drive can also be built as a module. If so, the module
1793 	  will be called rtc-tegra.
1804 	   This driver can also be built as a module, if so, the module
1805 	   will be called "rtc-mxc".
1814 	   SRTC module in i.MX53 processor.
1816 	   This driver can also be built as a module, if so, the module
1817 	   will be called "rtc-mxc_v2".
1829 	   This driver can also be built as a module, if so, the module
1830 	   will be called "rtc-snvs".
1841 	   This driver can also be built as a module, if so, the module
1842 	   will be called "rtc-bbnsm".
1853 	  module will be called rtc-imx-sm-bbm.
1872 	  module will be called rtc-st-lpc.
1881 	   This driver can also be built as a module. If so, the module
1882 	   will be called rtc-moxart
1888 	  This enables support for the real time clock built in the MediaTek
1891 	  This drive can also be built as a module. If so, the module
1892 	  will be called rtc-mt2712.
1909 	  This enables support for the real time clock built in the MediaTek
1912 	  This drive can also be built as a module. If so, the module
1913 	  will be called rtc-mt7622.
1916 	tristate "APM X-Gene RTC"
1920 	  If you say yes here you get support for the APM X-Gene SoC real time
1923 	  This driver can also be built as a module, if so, the module
1924 	  will be called "rtc-xgene".
1933 	   This driver can also be built as a module. If so, the module
1934 	   will be called rtc-pic32
1937 	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1942 	   RTC-7301SF/DG chips.
1944 	   This driver can also be built as a module. If so, the module
1945 	   will be called rtc-r7301.
1958 	   If you say yes here you get support for the STM32 On-Chip
1961 	   This driver can also be built as a module, if so, the module
1962 	   will be called "rtc-stm32".
1987 	  This driver can also be built as a module, if so, the module
1988 	  will be called "rtc-aspeed".
1998 	  This driver can also be built as a module, if so, the module
1999 	  will be called "rtc-ti-k3".
2007 	   On-Chip Real Time Clock.
2009 	   This driver can also be built as a module, if so, the module
2010 	   will be called "rtc-ma35d1".
2013 	tristate "Renesas RTCA-3 RTC"
2016 	  If you say yes here you get support for the Renesas RTCA-3 RTC
2019 	  This driver can also be built as a module, if so, the module
2020 	  will be called "rtc-rtca3".
2034 	  rtc-hid-sensor-time.
2053 	  This can also be built as a module. If so, the module will
2060 	  If you say yes here you get support for the Mstar MSC313e On-Chip
2063 	  This driver can also be built as a module, if so, the module
2064 	  will be called "rtc-msc313".
2067 	tristate "Microchip PolarFire SoC built-in RTC"
2071 	  built-in RTC on Polarfire SoC.
2073 	  This driver can also be built as a module, if so, the module
2074 	  will be called "rtc-mpfs".
2081 	  If you say yes here you get support for the SigmaStar SSD202D On-Chip
2084 	  This driver can also be built as a module, if so, the module
2085 	  will be called "rtc-ssd20xd".
2096 	  This driver can also be built as a module. If so, the module
2097 	  will be called "rtc-amlogic-a4".