Kconfig - OpenGrok cross reference for /linux-4.19.296/drivers/rtc/Kconfig

2 # RTC class/drivers configuration
18 	  Generic RTC class support. If you say yes here, you will
25 	bool "Set system time from RTC on startup and resume"
29 	  the value read from a specified RTC device. This is useful to avoid
33 	string "RTC used to set the system time"
37 	  The RTC device that will be used to (re)initialize the system
43 	  The driver for this RTC device must be loaded before late_initcall
52 	  sleep states. Do not specify an RTC here unless it stays powered
56 	bool "Set the RTC time based on NTP synchronization"
60 	  in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
64 	string "RTC used to synchronize NTP adjustment"
69 	  The RTC device used for NTP synchronization. The main difference
75 	bool "RTC debug support"
77 	  Say yes here to enable debugging support in the RTC framework
78 	  and individual RTC drivers.
81 	bool "RTC non volatile storage support"
88 comment "RTC interfaces"
105 	  Say yes here if you want to use your system clock RTC through
108 	  If there is no RTC for the system clock, then the first RTC(rtc0)
129 	bool "RTC UIE emulation on dev interface"
144 	  RTC test driver. It's a software RTC which can be
145 	  used to test the RTC subsystem APIs. It gets
148 	  on the RTC subsystem. Please read the source code
154 comment "I2C RTC drivers"
162 	  If you say yes here you get support for RTC function in Marvell
172 	  If you say yes here you get support for RTC function in Marvell
183 	  AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
220 	tristate "ams AS3722 RTC driver"
223 	  If you say yes here you get support for the RTC of ams AS3722 PMIC
232 	  If you say yes here you get support for various compatible RTC
236 	  In some cases the RTC must already have been initialized (by
239 	  The first seven registers on these chips hold an RTC, and other
241 	  the RTC/NVRAM backup power, and alarms. NVRAM is visible in
259 	  the RTC date and then boot a kernel with this option set.
292 	  Say Y to enable support for the HYM8563 I2C RTC chip. Apart
300 	tristate "TI LP8788 RTC driver"
303 	  Say Y to enable support for the LP8788 RTC/ALARM driver.
309 	  Maxim MAX6900 I2C RTC chip.
320 	  RTC of Maxim MAX8907 PMIC.
330 	  RTC of Maxim MAX8925 PMIC.
340 	  RTC of Maxim MAX8998 PMIC.
350 	  RTC of Maxim MAX8997 PMIC.
360 	  RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
366 	tristate "Rockchip RK805/RK808/RK818 RTC"
370 	  RTC of RK805, RK808 and RK818 PMIC.
379 	  Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
388 	  Intersil ISL1208 RTC chip.
397 	  Intersil ISL12022 RTC chip.
407 	  Intersil ISL12026 RTC chip.
416 	  Xicor/Intersil X1205 RTC chip.
424 	  If you say yes here you get support for the NXP PCF8523 RTC
433 	  If you say yes here you get support for the PCF85063 RTC chip
443 	  If you say yes here you get support for the PCF85363 RTC chip.
455 	  Philips PCF8563 RTC chip. The Epson RTC8564
465 	  RTC chip found on Acorn RiscPCs. This driver supports the
467 	  the RTC's SRAM. It will work on other platforms with the same
477 	  and M41T80 RTC chips series. Currently, the following chips are
485 	bool "ST M41T65/M41T80 series RTC watchdog timer"
489 	  watchdog timer in the ST M41T60 and M41T80 RTC chips series.
495 	  BQ32000 I2C RTC chip.
501 	tristate "TI DaVinci DM355 EVM RTC"
504 	  Supports the RTC firmware in the MSP430 on the DM355 EVM.
510 	  If you say yes here you get support for the RTC on the
520 	  If you say yes here you get support for the RTC on the
527 	tristate "TI Palmas RTC driver"
530 	  If you say yes here you get support for the RTC of TI PALMA series PMIC
537 	tristate "TI TPS6586X RTC driver"
540 	  TI Power Management IC TPS6586X supports RTC functionality
541 	  along with alarm. This driver supports the RTC driver for
542 	  the TPS6586X RTC module.
545 	tristate "TI TPS65910 RTC driver"
548 	  If you say yes here you get support for the RTC on the
555 	tristate "TI TPS80031/TPS80032 RTC driver"
558 	  TI Power Management IC TPS80031 supports RTC functionality
559 	  along with alarm. This driver supports the RTC driver for
560 	  the TPS80031 RTC module.
563 	tristate "RICOH 5T583 RTC driver"
566 	  If you say yes here you get support for the RTC on the
586 	  Ramtron FM3130 RTC chips.
588 	  RTC clock and FRAM. This driver provides only RTC functionality.
597 	  If you say yes here you get support for the Epson RX8010SJ RTC
615 	  RX-8025SA/NB RTC chips.
624 	  Microelectronic EM3027 RTC chips.
633 	  Epson RX8900 RTC chips.
645 	  RTC of Samsung S2MPS14 and S5M PMIC series.
652 comment "SPI RTC drivers"
660 	  ST M41T93 SPI RTC chip.
669 	  ST M41T94 SPI RTC chip.
678 	  If you say yes here you get support for the Dallas DS1302 RTC chips.
711 	  This driver only supports the RTC feature, and not other chip
723 	  This driver supports the RTC feature and trickle charging but not
733 	  Maxim MAX6916 SPI RTC chip.
735 	  This driver only supports the RTC feature, and not other chip
742 	tristate "Epson RTC-9701JE"
745 	  Epson RTC-9701JE SPI RTC chip.
771 	  Ricoh RS5C348A and RS5C348B RTC chips.
780 	  Maxim MAX6902 SPI RTC chip.
789 	  RTC chip.
816 comment "SPI and I2C RTC drivers"
841 	  If you say yes here you get support for the NXP PCF2127/29 RTC
852 	  RV3029 and RV3049 RTC chips.
866 comment "Platform RTC drivers"
868 # this 'CMOS' RTC driver is arch dependent because it requires
902 	tristate "Virtual RTC for Intel MID platforms"
908 	found on Moorestown platforms. The VRTC is a emulated RTC that
909 	derives its clock source from a real RTC in the PMIC. The MC146818
917 	  If you say yes here you get support for the Dallas DS1216 RTC chips.
923 	  If you say yes here you get support for the Dallas DS1286 RTC chips.
977 	  This is an older RTC chip, supplanted by the DS1685/DS1687 above,
981 	  It also works for the even older DS1688/DS1691 RTC chips, which are
1016 	  Enable this to display a readout of all of the RTC registers in
1037 	  Dallas DS2404 RTC chip.
1043 	tristate "Dialog DA9052/DA9053 RTC"
1046 	  Say y here to support the RTC driver for Dialog Semiconductor
1050 	tristate "Dialog Semiconductor DA9055 RTC"
1054 	  RTC of the Dialog DA9055 PMIC.
1060 	tristate "Dialog Semiconductor DA9063/DA9062 RTC"
1063 	  If you say yes here you will get support for the RTC subsystem
1070 	tristate "EFI RTC"
1093 	  ST M48T86 and Dallas DS12887 RTC chips.
1103 	  ST M48T35 RTC chip.
1113 	  ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
1136 	  BQ4802 RTC chip.
1156 	  EM Microelectronic v3020 RTC chip.
1162 	tristate "Wolfson Microelectronics WM831x RTC"
1165 	  If you say yes here you will get support for the RTC subsystem
1172 	tristate "Wolfson Microelectronics WM8350 RTC"
1175 	  If you say yes here you will get support for the RTC subsystem
1182 	tristate "Spreadtrum SC27xx RTC"
1185 	  If you say Y here you will get support for the RTC subsystem
1193 	tristate "SPEAR ST RTC"
1197 	 If you say Y here you will get support for the RTC found on
1202 	tristate "NXP PCF50633 RTC"
1204 	  If you say yes here you get support for the RTC subsystem of the
1208 	tristate "ST-Ericsson AB3100 RTC"
1212 	  Select this to enable the ST-Ericsson AB3100 Mixed Signal IC RTC
1213 	  support. This chip contains a battery- and capacitor-backed RTC.
1216 	tristate "ST-Ericsson AB8500 RTC"
1221 	  Select this to enable the ST-Ericsson AB8500 power management IC RTC
1222 	  support. This chip contains a battery- and capacitor-backed RTC.
1225 	tristate "NUC910/NUC920 RTC driver"
1228 	  If you say yes here you get support for the RTC subsystem of the
1232 	tristate "IBM OPAL RTC driver"
1236 	  If you say yes here you get support for the PowerNV platform RTC
1243 	tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
1246 	  If you say yes here you get support for the RTC controller found on
1250 	tristate "Chrome OS EC RTC driver"
1254 	  Chrome OS Embedded Controller's RTC.
1259 comment "on-CPU RTC drivers"
1262 	tristate "Alphascale asm9260 RTC"
1265 	  If you say yes here you get support for the RTC on the
1272 	tristate "TI DaVinci RTC"
1275 	  If you say yes here you get support for the RTC on the
1282 	tristate "Conexant Digicolor RTC"
1285 	  If you say yes here you get support for the RTC on Conexant
1295 	   Support for Freescale IMX DryIce RTC
1316 	  This will include RTC support for Samsung SoCs. If
1317 	  you want to include RTC support for any machine, kindly
1321 	tristate "Samsung S3C series SoC RTC"
1324 	  RTC (Realtime Clock) driver for the clock inbuilt into the
1341 	  RTC embedded in the Cirrus Logic EP93XX processors.
1357 	tristate "SuperH On-Chip RTC"
1360 	  Say Y here to enable support for the on-chip RTC found in
1361 	  most SuperH processors. This RTC is also found in RZ/A SoCs.
1377 	tristate "ARM AMBA PL030 RTC"
1381 	  PrimeCell PL030 RTC found on certain ARM SOCs.
1387 	tristate "ARM AMBA PL031 RTC"
1391 	  PrimeCell PL031 RTC found on certain ARM SOCs.
1397 	tristate "AT91RM9200 or some AT91SAM9 RTC"
1400 	  Driver for the internal RTC (Realtime Clock) module found on
1405 	tristate "AT91SAM9 RTT as RTC"
1411 	  can be used as an RTC thanks to the backup power supply (e.g. a
1415 	  Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
1416 	  probably want to use the real RTC block instead of the "RTT as an
1417 	  RTC" driver.
1420 	tristate "Au1xxx Counter0 RTC support"
1424 	  counter) to be used as a RTC.
1433 	  If you say yes here you get support for the Ricoh RS5C313 RTC chips.
1436 	tristate "Generic RTC support"
1437 	# Please consider writing a new RTC driver instead of using the generic
1438 	# RTC abstraction
1441 	  Say Y or M here to enable RTC support on systems using the generic
1442 	  RTC abstraction. If you do not know what you are doing, you should
1451          built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
1452          consisting of an SA1100 compatible RTC and the extended PXA RTC.
1454 	 This RTC driver uses PXA RTC registers available since pxa27x
1458 	tristate "VIA/WonderMedia 85xx SoC RTC"
1466 	bool "SUN4V Hypervisor RTC"
1470 	  based RTC on SUN4V systems.
1473 	bool "Allwinner A31 RTC"
1478 	  If you say Y here you will get support for the RTC found in
1482 	tristate "Allwinner sun4i/sun7i RTC"
1485 	  If you say Y here you will get support for the RTC found on
1489 	bool "Starfire RTC"
1492 	  If you say Y here you will get support for the RTC found on
1499 	  Driver for the internal RTC (Realtime Clock) module found on
1503 	tristate "Marvell SoC RTC"
1506 	  If you say yes here you will get support for the in-chip RTC
1514 	tristate "Armada 38x Marvell SoC RTC"
1517 	  If you say yes here you will get support for the in-chip RTC
1524 	tristate "Faraday Technology FTRTC010 RTC"
1535 	tristate "PS3 RTC"
1538 	  If you say yes here you will get support for the RTC on PS3.
1544 	tristate "ST-Ericsson COH 901 331 RTC"
1548 	  COH 901 331 RTC clock found in some ST-Ericsson Mobile
1556 	tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
1561 	  STMP3xxx/i.MX23/i.MX28 RTC.
1567 	tristate "PCAP RTC"
1570 	  If you say Y here you will get support for the RTC found on
1575 	tristate "Freescale MC13xxx RTC"
1581 	tristate "Freescale MPC5121 built-in RTC"
1585 	  built-in RTC on MPC5121 or on MPC5200.
1594 	  If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
1601 	tristate "NXP RTC for LPC178x/18xx/408x/43xx"
1605 	  This enables support for the NXP RTC found which can be found on
1609 	  the hardware RTC. This driver can also be built as a module. If
1614 	tristate "NXP LPC32XX RTC"
1616 	  This enables support for the NXP RTC in the LPC32XX
1622 	tristate "Qualcomm PMIC8XXX RTC"
1626 	  Qualcomm PMIC8XXX RTC.
1632 	tristate "NVIDIA Tegra Internal RTC driver"
1636 	  Tegra 200 series internal RTC module.
1642 	tristate "PKUnity v3 RTC support"
1645 	  This enables support for the RTC in the PKUnity-v3 SoCs.
1651 	tristate "loongson1 RTC support"
1655 	  counter) to be used as a RTC.
1665 	   RTC module.
1681 	tristate "Freescale SNVS RTC support"
1687 	   Low Power (LP) RTC module.
1693 	tristate "SiRFSOC RTC"
1700 	tristate "STMicroelectronics LPC RTC"
1705 	  (LPC) based RTC support.
1711 	tristate "MOXA ART RTC"
1715 	   RTC module.
1721 	tristate "MediaTek PMIC based RTC"
1724 	  This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
1726 	  MediaTek(R) RTC driver.
1728 	  If you want to use MediaTek(R) RTC interface, select Y or M here.
1731 	tristate "MediaTek SoC based RTC"
1741 	tristate "APM X-Gene RTC"
1752 	tristate "Microchip PIC32 RTC"
1756 	   If you say yes here you get support for the PIC32 RTC module.
1762 	tristate "EPSON TOYOCOM RTC-7301SF/DG"
1767 	   RTC-7301SF/DG chips.
1773 	tristate "STM32 RTC"
1785 	tristate "Motorola CPCAP RTC"
1791 	bool "Realtek RTD129x RTC"
1798 comment "HID Sensor RTC drivers"
1817 	  Say yes to enable RTC driver for the Goldfish based virtual platform.