# SPDX-License-Identifier: GPL-2.0-only
#
# RTC class/drivers configuration
#
config RTC_LIB
bool
config RTC_MC146818_LIB
bool
select RTC_LIB
menuconfig RTC_CLASS
bool "Real Time Clock"
default n
depends on !S390
select RTC_LIB
help
Generic RTC class support. If you say yes here, you will
be allowed to plug one or more RTCs to your system. You will
probably want to enable one or more of the interfaces below.
if RTC_CLASS
config RTC_HCTOSYS
bool "Set system time from RTC on startup and resume"
default y
help
If you say yes here, the system time (wall clock) will be set using
the value read from a specified RTC device. This is useful to avoid
unnecessary fsck runs at boot time, and to network better.
config RTC_HCTOSYS_DEVICE
string "RTC used to set the system time"
depends on RTC_HCTOSYS
default "rtc0"
help
The RTC device that will be used to (re)initialize the system
clock, usually rtc0. Initialization is done when the system
starts up, and when it resumes from a low power state. This
device should record time in UTC, since the kernel won't do
timezone correction.
This clock should be battery-backed, so that it reads the correct
time when the system boots from a power-off state. Otherwise, your
system will need an external clock source (like an NTP server).
If the clock you specify here is not battery backed, it may still
be useful to reinitialize system time when resuming from system
sleep states. Do not specify an RTC here unless it stays powered
during all this system's supported sleep states.
config RTC_SYSTOHC
bool "Set the RTC time based on NTP synchronization"
default y
help
If you say yes here, the system time (wall clock) will be stored
in the RTC specified by RTC_HCTOSYS_DEVICE approximately every 11
minutes if userspace reports synchronized NTP status.
config RTC_SYSTOHC_DEVICE
string "RTC used to synchronize NTP adjustment"
depends on RTC_SYSTOHC
default RTC_HCTOSYS_DEVICE if RTC_HCTOSYS
default "rtc0"
help
The RTC device used for NTP synchronization. The main difference
between RTC_HCTOSYS_DEVICE and RTC_SYSTOHC_DEVICE is that this
one can sleep when setting time, because it runs in the workqueue
context.
config RTC_DEBUG
bool "RTC debug support"
help
Say yes here to enable debugging support in the RTC framework
and individual RTC drivers.
config RTC_LIB_KUNIT_TEST
tristate "KUnit test for RTC lib functions" if !KUNIT_ALL_TESTS
depends on KUNIT
default KUNIT_ALL_TESTS
help
Enable this option to test RTC library functions.
If unsure, say N.
config RTC_NVMEM
bool "RTC non volatile storage support"
select NVMEM
default RTC_CLASS
help
Say yes here to add support for the non volatile (often battery
backed) storage present on RTCs.
comment "RTC interfaces"
config RTC_INTF_SYSFS
bool "/sys/class/rtc/rtcN (sysfs)"
depends on SYSFS
default RTC_CLASS
help
Say yes here if you want to use your RTCs using sysfs interfaces,
/sys/class/rtc/rtc0 through /sys/.../rtcN.
If unsure, say Y.
config RTC_INTF_PROC
bool "/proc/driver/rtc (procfs for rtcN)"
depends on PROC_FS
default RTC_CLASS
help
Say yes here if you want to use your system clock RTC through
the proc interface, /proc/driver/rtc.
Other RTCs will not be available through that API.
If there is no RTC for the system clock, then the first RTC(rtc0)
is used by default.
If unsure, say Y.
config RTC_INTF_DEV
bool "/dev/rtcN (character devices)"
default RTC_CLASS
help
Say yes here if you want to use your RTCs using the /dev
interfaces, which "udev" sets up as /dev/rtc0 through
/dev/rtcN.
You may want to set up a symbolic link so one of these
can be accessed as /dev/rtc, which is a name
expected by "hwclock" and some other programs. Recent
versions of "udev" are known to set up the symlink for you.
If unsure, say Y.
config RTC_INTF_DEV_UIE_EMUL
bool "RTC UIE emulation on dev interface"
depends on RTC_INTF_DEV
help
Provides an emulation for RTC_UIE if the underlying rtc chip
driver does not expose RTC_UIE ioctls. Those requests generate
once-per-second update interrupts, used for synchronization.
The emulation code will read the time from the hardware
clock several times per second, please enable this option
only if you know that you really need it.
config RTC_DRV_TEST
tristate "Test driver/device"
help
If you say yes here you get support for the
RTC test driver. It's a software RTC which can be
used to test the RTC subsystem APIs. It gets
the time from the system clock.
You want this driver only if you are doing development
on the RTC subsystem. Please read the source code
for further details.
This driver can also be built as a module. If so, the module
will be called rtc-test.
comment "I2C RTC drivers"
if I2C
config RTC_DRV_88PM860X
tristate "Marvell 88PM860x"
depends on MFD_88PM860X
help
If you say yes here you get support for RTC function in Marvell
88PM860x chips.
This driver can also be built as a module. If so, the module
will be called rtc-88pm860x.
config RTC_DRV_88PM80X
tristate "Marvell 88PM80x"
depends on MFD_88PM800
help
If you say yes here you get support for RTC function in Marvell
88PM80x chips.
This driver can also be built as a module. If so, the module
will be called rtc-88pm80x.
config RTC_DRV_ABB5ZES3
select REGMAP_I2C
tristate "Abracon AB-RTCMC-32.768kHz-B5ZE-S3"
help
If you say yes here you get support for the Abracon
AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-ab-b5ze-s3.
config RTC_DRV_ABEOZ9
select REGMAP_I2C
tristate "Abracon AB-RTCMC-32.768kHz-EOZ9"
help
If you say yes here you get support for the Abracon
AB-RTCMC-32.768kHz-EOA9 I2C RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-ab-e0z9.
config RTC_DRV_ABX80X
tristate "Abracon ABx80x"
select WATCHDOG_CORE if WATCHDOG
help
If you say yes here you get support for Abracon AB080X and AB180X
families of ultra-low-power battery- and capacitor-backed real-time
clock chips.
This driver can also be built as a module. If so, the module
will be called rtc-abx80x.
config RTC_DRV_AC100
tristate "X-Powers AC100"
depends on MFD_AC100
help
If you say yes here you get support for the real-time clock found
in X-Powers AC100 family peripheral ICs.
This driver can also be built as a module. If so, the module
will be called rtc-ac100.
config RTC_DRV_BRCMSTB
tristate "Broadcom STB wake-timer"
depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
default ARCH_BRCMSTB || BMIPS_GENERIC
help
If you say yes here you get support for the wake-timer found on
Broadcom STB SoCs (BCM7xxx).
This driver can also be built as a module. If so, the module will
be called rtc-brcmstb-waketimer.
config RTC_DRV_AS3722
tristate "ams AS3722 RTC driver"
depends on MFD_AS3722
help
If you say yes here you get support for the RTC of ams AS3722 PMIC
chips.
This driver can also be built as a module. If so, the module
will be called rtc-as3722.
config RTC_DRV_DS1307
tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
select REGMAP_I2C
select WATCHDOG_CORE if WATCHDOG
help
If you say yes here you get support for various compatible RTC
chips (often with battery backup) connected with I2C. This driver
should handle DS1307, DS1337, DS1338, DS1339, DS1340, DS1341,
ST M41T00, EPSON RX-8025, Intersil ISL12057 and probably other chips.
In some cases the RTC must already have been initialized (by
manufacturing or a bootloader).
The first seven registers on these chips hold an RTC, and other
registers may add features such as NVRAM, a trickle charger for
the RTC/NVRAM backup power, and alarms. NVRAM is visible in
sysfs, but other chip features may not be available.
This driver can also be built as a module. If so, the module
will be called rtc-ds1307.
config RTC_DRV_DS1307_CENTURY
bool "Century bit support for rtc-ds1307"
depends on RTC_DRV_DS1307
default n
help
The DS1307 driver suffered from a bug where it was enabling the
century bit inconditionnally but never used it when reading the time.
It made the driver unable to support dates beyond 2099.
Setting this option will add proper support for the century bit but if
the time was previously set using a kernel predating this option,
reading the date will return a date in the next century.
To solve that, you could boot a kernel without this option set, set
the RTC date and then boot a kernel with this option set.
config RTC_DRV_DS1374
tristate "Dallas/Maxim DS1374"
help
If you say yes here you get support for Dallas Semiconductor
DS1374 real-time clock chips. If an interrupt is associated
with the device, the alarm functionality is supported.
This driver can also be built as a module. If so, the module
will be called rtc-ds1374.
config RTC_DRV_DS1374_WDT
bool "Dallas/Maxim DS1374 watchdog timer"
depends on RTC_DRV_DS1374 && WATCHDOG
select WATCHDOG_CORE
help
If you say Y here you will get support for the
watchdog timer in the Dallas Semiconductor DS1374
real-time clock chips.
config RTC_DRV_DS1672
tristate "Dallas/Maxim DS1672"
help
If you say yes here you get support for the
Dallas/Maxim DS1672 timekeeping chip.
This driver can also be built as a module. If so, the module
will be called rtc-ds1672.
config RTC_DRV_HYM8563
tristate "Haoyu Microelectronics HYM8563"
depends on OF
help
Say Y to enable support for the HYM8563 I2C RTC chip. Apart
from the usual rtc functions it provides a clock output of
up to 32kHz.
This driver can also be built as a module. If so, the module
will be called rtc-hym8563.
config RTC_DRV_LP8788
tristate "TI LP8788 RTC driver"
depends on MFD_LP8788
help
Say Y to enable support for the LP8788 RTC/ALARM driver.
config RTC_DRV_MAX6900
tristate "Maxim MAX6900"
help
If you say yes here you will get support for the
Maxim MAX6900 I2C RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-max6900.
config RTC_DRV_MAX8907
tristate "Maxim MAX8907"
depends on MFD_MAX8907 || COMPILE_TEST
select REGMAP_IRQ
help
If you say yes here you will get support for the
RTC of Maxim MAX8907 PMIC.
This driver can also be built as a module. If so, the module
will be called rtc-max8907.
config RTC_DRV_MAX8925
tristate "Maxim MAX8925"
depends on MFD_MAX8925
help
If you say yes here you will get support for the
RTC of Maxim MAX8925 PMIC.
This driver can also be built as a module. If so, the module
will be called rtc-max8925.
config RTC_DRV_MAX8998
tristate "Maxim MAX8998"
depends on MFD_MAX8998
help
If you say yes here you will get support for the
RTC of Maxim MAX8998 PMIC.
This driver can also be built as a module. If so, the module
will be called rtc-max8998.
config RTC_DRV_MAX8997
tristate "Maxim MAX8997"
depends on MFD_MAX8997
help
If you say yes here you will get support for the
RTC of Maxim MAX8997 PMIC.
This driver can also be built as a module. If so, the module
will be called rtc-max8997.
config RTC_DRV_MAX77686
tristate "Maxim MAX77686"
depends on MFD_MAX77686 || MFD_MAX77620 || MFD_MAX77714 || COMPILE_TEST
help
If you say yes here you will get support for the
RTC of Maxim MAX77686/MAX77620/MAX77802 PMIC.
This driver can also be built as a module. If so, the module
will be called rtc-max77686.
config RTC_DRV_NCT3018Y
tristate "Nuvoton NCT3018Y"
depends on OF
help
If you say yes here you get support for the Nuvoton NCT3018Y I2C RTC
chip.
This driver can also be built as a module, if so, the module will be
called "rtc-nct3018y".
config RTC_DRV_RK808
tristate "Rockchip RK805/RK808/RK809/RK817/RK818 RTC"
depends on MFD_RK8XX
help
If you say yes here you will get support for the
RTC of RK805, RK809 and RK817, RK808 and RK818 PMIC.
This driver can also be built as a module. If so, the module
will be called rk808-rtc.
config RTC_DRV_RS5C372
tristate "Ricoh R2025S/D, RS5C372A/B, RV5C386, RV5C387A"
help
If you say yes here you get support for the
Ricoh R2025S/D, RS5C372A, RS5C372B, RV5C386, and RV5C387A RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-rs5c372.
config RTC_DRV_ISL1208
tristate "Intersil ISL1208"
help
If you say yes here you get support for the
Intersil ISL1208 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-isl1208.
config RTC_DRV_ISL12022
tristate "Intersil ISL12022"
select REGMAP_I2C
help
If you say yes here you get support for the
Intersil ISL12022 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-isl12022.
config RTC_DRV_ISL12026
tristate "Intersil ISL12026"
depends on OF
help
If you say yes here you get support for the
Intersil ISL12026 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-isl12026.
config RTC_DRV_X1205
tristate "Xicor/Intersil X1205"
help
If you say yes here you get support for the
Xicor/Intersil X1205 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-x1205.
config RTC_DRV_PCF8523
tristate "NXP PCF8523"
select REGMAP_I2C
help
If you say yes here you get support for the NXP PCF8523 RTC
chips.
This driver can also be built as a module. If so, the module
will be called rtc-pcf8523.
config RTC_DRV_PCF85063
tristate "NXP PCF85063"
select REGMAP_I2C
help
If you say yes here you get support for the PCF85063 RTC chip
This driver can also be built as a module. If so, the module
will be called rtc-pcf85063.
config RTC_DRV_PCF85363
tristate "NXP PCF85363"
select REGMAP_I2C
help
If you say yes here you get support for the PCF85363 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-pcf85363.
The nvmem interface will be named pcf85363-#, where # is the
zero-based instance number.
config RTC_DRV_PCF8563
tristate "Philips PCF8563/Epson RTC8564"
help
If you say yes here you get support for the
Philips PCF8563 RTC chip. The Epson RTC8564
should work as well.
This driver can also be built as a module. If so, the module
will be called rtc-pcf8563.
config RTC_DRV_PCF8583
tristate "Philips PCF8583"
help
If you say yes here you get support for the Philips PCF8583
RTC chip found on Acorn RiscPCs. This driver supports the
platform specific method of retrieving the current year from
the RTC's SRAM. It will work on other platforms with the same
chip, but the year will probably have to be tweaked.
This driver can also be built as a module. If so, the module
will be called rtc-pcf8583.
config RTC_DRV_M41T80
tristate "ST M41T62/65/M41T80/81/82/83/84/85/87 and compatible"
help
If you say Y here you will get support for the ST M41T60
and M41T80 RTC chips series. Currently, the following chips are
supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
M41ST85, M41ST87, and MicroCrystal RV4162.
This driver can also be built as a module. If so, the module
will be called rtc-m41t80.
config RTC_DRV_M41T80_WDT
bool "ST M41T65/M41T80 series RTC watchdog timer"
depends on RTC_DRV_M41T80
help
If you say Y here you will get support for the
watchdog timer in the ST M41T60 and M41T80 RTC chips series.
config RTC_DRV_BD70528
tristate "ROHM BD71815 and BD71828 PMIC RTC"
depends on MFD_ROHM_BD71828
help
If you say Y here you will get support for the RTC
block on ROHM BD71815 and BD71828 Power Management IC.
This driver can also be built as a module. If so, the module
will be called rtc-bd70528.
config RTC_DRV_BQ32K
tristate "TI BQ32000"
help
If you say Y here you will get support for the TI
BQ32000 I2C RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-bq32k.
config RTC_DRV_TWL92330
bool "TI TWL92330/Menelaus"
depends on MENELAUS
help
If you say yes here you get support for the RTC on the
TWL92330 "Menelaus" power management chip, used with OMAP2
platforms. The support is integrated with the rest of
the Menelaus driver; it's not separate module.
config RTC_DRV_TWL4030
tristate "TI TWL4030/TWL5030/TWL6030/TPS659x0"
depends on TWL4030_CORE
depends on OF
help
If you say yes here you get support for the RTC on the
TWL4030/TWL5030/TWL6030 family chips, used mostly with OMAP3 platforms.
This driver can also be built as a module. If so, the module
will be called rtc-twl.
config RTC_DRV_PALMAS
tristate "TI Palmas RTC driver"
depends on MFD_PALMAS
help
If you say yes here you get support for the RTC of TI PALMA series PMIC
chips.
This driver can also be built as a module. If so, the module
will be called rtc-palma.
config RTC_DRV_TPS6586X
tristate "TI TPS6586X RTC driver"
depends on MFD_TPS6586X
help
TI Power Management IC TPS6586X supports RTC functionality
along with alarm. This driver supports the RTC driver for
the TPS6586X RTC module.
config RTC_DRV_TPS65910
tristate "TI TPS65910 RTC driver"
depends on MFD_TPS65910
help
If you say yes here you get support for the RTC on the
TPS65910 chips.
This driver can also be built as a module. If so, the module
will be called rtc-tps65910.
config RTC_DRV_RC5T583
tristate "RICOH 5T583 RTC driver"
depends on MFD_RC5T583
help
If you say yes here you get support for the RTC on the
RICOH 5T583 chips.
This driver can also be built as a module. If so, the module
will be called rtc-rc5t583.
config RTC_DRV_RC5T619
tristate "RICOH RC5T619 RTC driver"
depends on MFD_RN5T618
help
If you say yes here you get support for the RTC on the
RICOH RC5T619 chips.
This driver can also be built as a module. If so, the module
will be called rtc-rc5t619.
config RTC_DRV_S35390A
tristate "Seiko Instruments S-35390A"
select BITREVERSE
help
If you say yes here you will get support for the Seiko
Instruments S-35390A.
This driver can also be built as a module. If so the module
will be called rtc-s35390a.
config RTC_DRV_FM3130
tristate "Ramtron FM3130"
help
If you say Y here you will get support for the
Ramtron FM3130 RTC chips.
Ramtron FM3130 is a chip with two separate devices inside,
RTC clock and FRAM. This driver provides only RTC functionality.
This driver can also be built as a module. If so the module
will be called rtc-fm3130.
config RTC_DRV_RX8010
tristate "Epson RX8010SJ"
select REGMAP_I2C
help
If you say yes here you get support for the Epson RX8010SJ RTC
chip.
This driver can also be built as a module. If so, the module
will be called rtc-rx8010.
config RTC_DRV_RX8581
tristate "Epson RX-8571/RX-8581"
select REGMAP_I2C
help
If you say yes here you will get support for the Epson RX-8571/
RX-8581.
This driver can also be built as a module. If so the module
will be called rtc-rx8581.
config RTC_DRV_RX8025
tristate "Epson RX-8025SA/NB"
help
If you say yes here you get support for the Epson
RX-8025SA/NB RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-rx8025.
config RTC_DRV_EM3027
tristate "EM Microelectronic EM3027"
help
If you say yes here you get support for the EM
Microelectronic EM3027 RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-em3027.
config RTC_DRV_RV3028
tristate "Micro Crystal RV3028"
select REGMAP_I2C
help
If you say yes here you get support for the Micro Crystal
RV3028.
This driver can also be built as a module. If so, the module
will be called rtc-rv3028.
config RTC_DRV_RV3032
tristate "Micro Crystal RV3032"
select REGMAP_I2C
help
If you say yes here you get support for the Micro Crystal
RV3032.
This driver can also be built as a module. If so, the module
will be called rtc-rv3032.
config RTC_DRV_RV8803
tristate "Micro Crystal RV8803, Epson RX8900"
help
If you say yes here you get support for the Micro Crystal RV8803 and
Epson RX8900 RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-rv8803.
config RTC_DRV_S5M
tristate "Samsung S2M/S5M series"
depends on MFD_SEC_CORE || COMPILE_TEST
select REGMAP_IRQ
select REGMAP_I2C
help
If you say yes here you will get support for the
RTC of Samsung S2MPS14 and S5M PMIC series.
This driver can also be built as a module. If so, the module
will be called rtc-s5m.
config RTC_DRV_SD3078
tristate "ZXW Shenzhen whwave SD3078"
select REGMAP_I2C
help
If you say yes here you get support for the ZXW Shenzhen whwave
SD3078 RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-sd3078
endif # I2C
comment "SPI RTC drivers"
if SPI_MASTER
config RTC_DRV_M41T93
tristate "ST M41T93"
help
If you say yes here you will get support for the
ST M41T93 SPI RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-m41t93.
config RTC_DRV_M41T94
tristate "ST M41T94"
help
If you say yes here you will get support for the
ST M41T94 SPI RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-m41t94.
config RTC_DRV_DS1302
tristate "Dallas/Maxim DS1302"
depends on SPI
help
If you say yes here you get support for the Dallas DS1302 RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-ds1302.
config RTC_DRV_DS1305
tristate "Dallas/Maxim DS1305/DS1306"
help
Select this driver to get support for the Dallas/Maxim DS1305
and DS1306 real time clock chips. These support a trickle
charger, alarms, and NVRAM in addition to the clock.
This driver can also be built as a module. If so, the module
will be called rtc-ds1305.
config RTC_DRV_DS1343
select REGMAP_SPI
tristate "Dallas/Maxim DS1343/DS1344"
help
If you say yes here you get support for the
Dallas/Maxim DS1343 and DS1344 real time clock chips.
Support for trickle charger, alarm is provided.
This driver can also be built as a module. If so, the module
will be called rtc-ds1343.
config RTC_DRV_DS1347
select REGMAP_SPI
tristate "Dallas/Maxim DS1347"
help
If you say yes here you get support for the
Dallas/Maxim DS1347 chips.
This driver only supports the RTC feature, and not other chip
features such as alarms.
This driver can also be built as a module. If so, the module
will be called rtc-ds1347.
config RTC_DRV_DS1390
tristate "Dallas/Maxim DS1390/93/94"
help
If you say yes here you get support for the
Dallas/Maxim DS1390/93/94 chips.
This driver supports the RTC feature and trickle charging but not
other chip features such as alarms.
This driver can also be built as a module. If so, the module
will be called rtc-ds1390.
config RTC_DRV_MAX6916
tristate "Maxim MAX6916"
help
If you say yes here you will get support for the
Maxim MAX6916 SPI RTC chip.
This driver only supports the RTC feature, and not other chip
features such as alarms.
This driver can also be built as a module. If so, the module
will be called rtc-max6916.
config RTC_DRV_R9701
tristate "Epson RTC-9701JE"
help
If you say yes here you will get support for the
Epson RTC-9701JE SPI RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-r9701.
config RTC_DRV_RX4581
tristate "Epson RX-4581"
help
If you say yes here you will get support for the Epson RX-4581.
This driver can also be built as a module. If so the module
will be called rtc-rx4581.
config RTC_DRV_RS5C348
tristate "Ricoh RS5C348A/B"
help
If you say yes here you get support for the
Ricoh RS5C348A and RS5C348B RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-rs5c348.
config RTC_DRV_MAX6902
tristate "Maxim MAX6902"
help
If you say yes here you will get support for the
Maxim MAX6902 SPI RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-max6902.
config RTC_DRV_PCF2123
tristate "NXP PCF2123"
select REGMAP_SPI
help
If you say yes here you get support for the NXP PCF2123
RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-pcf2123.
config RTC_DRV_MCP795
tristate "Microchip MCP795"
help
If you say yes here you will get support for the Microchip MCP795.
This driver can also be built as a module. If so the module
will be called rtc-mcp795.
endif # SPI_MASTER
#
# Helper to resolve issues with configs that have SPI enabled but I2C
# modular. See SND_SOC_I2C_AND_SPI for more information
#
config RTC_I2C_AND_SPI
tristate
default m if I2C=m
default y if I2C=y
default y if SPI_MASTER=y
comment "SPI and I2C RTC drivers"
config RTC_DRV_DS3232
tristate "Dallas/Maxim DS3232/DS3234"
depends on RTC_I2C_AND_SPI
select REGMAP_I2C if I2C
select REGMAP_SPI if SPI_MASTER
help
If you say yes here you get support for Dallas Semiconductor
DS3232 and DS3234 real-time clock chips. If an interrupt is associated
with the device, the alarm functionality is supported.
This driver can also be built as a module. If so, the module
will be called rtc-ds3232.
config RTC_DRV_DS3232_HWMON
bool "HWMON support for Dallas/Maxim DS3232/DS3234"
depends on RTC_DRV_DS3232 && HWMON && !(RTC_DRV_DS3232=y && HWMON=m)
default y
help
Say Y here if you want to expose temperature sensor data on
rtc-ds3232
config RTC_DRV_PCF2127
tristate "NXP PCF2127"
depends on RTC_I2C_AND_SPI
select REGMAP_I2C if I2C
select REGMAP_SPI if SPI_MASTER
select WATCHDOG_CORE if WATCHDOG
help
If you say yes here you get support for the NXP PCF2127/29/31 RTC
chips with integrated quartz crystal for industrial applications.
These chips also have watchdog timer and tamper switch detection
features.
PCF2127 has an additional feature of 512 bytes battery backed
memory that's accessible using nvmem interface.
This driver can also be built as a module. If so, the module
will be called rtc-pcf2127.
config RTC_DRV_RV3029C2
tristate "Micro Crystal RV3029/3049"
depends on RTC_I2C_AND_SPI
select REGMAP_I2C if I2C
select REGMAP_SPI if SPI_MASTER
help
If you say yes here you get support for the Micro Crystal
RV3029 and RV3049 RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-rv3029c2.
config RTC_DRV_RV3029_HWMON
bool "HWMON support for RV3029/3049"
depends on RTC_DRV_RV3029C2 && HWMON
depends on !(RTC_DRV_RV3029C2=y && HWMON=m)
default y
help
Say Y here if you want to expose temperature sensor data on
rtc-rv3029.
config RTC_DRV_RX6110
tristate "Epson RX-6110"
depends on RTC_I2C_AND_SPI
select REGMAP_SPI if SPI_MASTER
select REGMAP_I2C if I2C
help
If you say yes here you will get support for the Epson RX-6110.
This driver can also be built as a module. If so the module
will be called rtc-rx6110.
comment "Platform RTC drivers"
# this 'CMOS' RTC driver is arch dependent because it requires
# <asm/mc146818rtc.h> defining CMOS_READ/CMOS_WRITE, and a
# global rtc_lock ... it's not yet just another platform_device.
config RTC_DRV_CMOS
tristate "PC-style 'CMOS'"
depends on X86 || ARM || PPC || MIPS || SPARC64
depends on HAS_IOPORT || MACH_DECSTATION
default y if X86
select RTC_MC146818_LIB
help
Say "yes" here to get direct support for the real time clock
found in every PC or ACPI-based system, and some other boards.
Specifically the original MC146818, compatibles like those in
PC south bridges, the DS12887 or M48T86, some multifunction
or LPC bus chips, and so on.
Your system will need to define the platform device used by
this driver, otherwise it won't be accessible. This means
you can safely enable this driver if you don't know whether
or not your board has this kind of hardware.
This driver can also be built as a module. If so, the module
will be called rtc-cmos.
config RTC_DRV_ALPHA
bool "Alpha PC-style CMOS"
depends on ALPHA
depends on HAS_IOPORT
select RTC_MC146818_LIB
default y
help
Direct support for the real-time clock found on every Alpha
system, specifically MC146818 compatibles. If in doubt, say Y.
config RTC_DRV_DS1216
tristate "Dallas DS1216"
depends on SNI_RM
help
If you say yes here you get support for the Dallas DS1216 RTC chips.
config RTC_DRV_DS1286
tristate "Dallas DS1286"
depends on HAS_IOMEM
help
If you say yes here you get support for the Dallas DS1286 RTC chips.
config RTC_DRV_DS1511
tristate "Dallas DS1511"
depends on HAS_IOMEM
help
If you say yes here you get support for the
Dallas DS1511 timekeeping/watchdog chip.
This driver can also be built as a module. If so, the module
will be called rtc-ds1511.
config RTC_DRV_DS1553
tristate "Maxim/Dallas DS1553"
depends on HAS_IOMEM
help
If you say yes here you get support for the
Maxim/Dallas DS1553 timekeeping chip.
This driver can also be built as a module. If so, the module
will be called rtc-ds1553.
config RTC_DRV_DS1685_FAMILY
tristate "Dallas/Maxim DS1685 Family"
depends on HAS_IOMEM
help
If you say yes here you get support for the Dallas/Maxim DS1685
family of real time chips. This family includes the DS1685/DS1687,
DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and
DS17885/DS17887 chips.
This driver can also be built as a module. If so, the module
will be called rtc-ds1685.
choice
prompt "Subtype"
depends on RTC_DRV_DS1685_FAMILY
default RTC_DRV_DS1685
config RTC_DRV_DS1685
bool "DS1685/DS1687"
help
This enables support for the Dallas/Maxim DS1685/DS1687 real time
clock chip.
This chip is commonly found in SGI O2 (IP32) and SGI Octane (IP30)
systems, as well as EPPC-405-UC modules by electronic system design
GmbH.
config RTC_DRV_DS1689
bool "DS1689/DS1693"
help
This enables support for the Dallas/Maxim DS1689/DS1693 real time
clock chip.
This is an older RTC chip, supplanted by the DS1685/DS1687 above,
which supports a few minor features such as Vcc, Vbat, and Power
Cycle counters, plus a customer-specific, 8-byte ROM/Serial number.
It also works for the even older DS1688/DS1691 RTC chips, which are
virtually the same and carry the same model number. Both chips
have 114 bytes of user NVRAM.
config RTC_DRV_DS17285
bool "DS17285/DS17287"
help
This enables support for the Dallas/Maxim DS17285/DS17287 real time
clock chip.
This chip features 2kb of extended NV-SRAM. It may possibly be
found in some SGI O2 systems (rare).
config RTC_DRV_DS17485
bool "DS17485/DS17487"
help
This enables support for the Dallas/Maxim DS17485/DS17487 real time
clock chip.
This chip features 4kb of extended NV-SRAM.
config RTC_DRV_DS17885
bool "DS17885/DS17887"
help
This enables support for the Dallas/Maxim DS17885/DS17887 real time
clock chip.
This chip features 8kb of extended NV-SRAM.
endchoice
config RTC_DRV_DS1742
tristate "Maxim/Dallas DS1742/1743"
depends on HAS_IOMEM
help
If you say yes here you get support for the
Maxim/Dallas DS1742/1743 timekeeping chip.
This driver can also be built as a module. If so, the module
will be called rtc-ds1742.
config RTC_DRV_DS2404
tristate "Maxim/Dallas DS2404"
help
If you say yes here you get support for the
Dallas DS2404 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-ds2404.
config RTC_DRV_DA9052
tristate "Dialog DA9052/DA9053 RTC"
depends on PMIC_DA9052
help
Say y here to support the RTC driver for Dialog Semiconductor
DA9052-BC and DA9053-AA/Bx PMICs.
config RTC_DRV_DA9055
tristate "Dialog Semiconductor DA9055 RTC"
depends on MFD_DA9055
help
If you say yes here you will get support for the
RTC of the Dialog DA9055 PMIC.
This driver can also be built as a module. If so, the module
will be called rtc-da9055
config RTC_DRV_DA9063
tristate "Dialog Semiconductor DA9063/DA9062 RTC"
depends on MFD_DA9063 || MFD_DA9062
help
If you say yes here you will get support for the RTC subsystem
for the Dialog Semiconductor PMIC chips DA9063 and DA9062.
This driver can also be built as a module. If so, the module
will be called "rtc-da9063".
config RTC_DRV_EFI
tristate "EFI RTC"
depends on EFI && !X86
help
If you say yes here you will get support for the EFI
Real Time Clock.
This driver can also be built as a module. If so, the module
will be called rtc-efi.
config RTC_DRV_STK17TA8
tristate "Simtek STK17TA8"
depends on HAS_IOMEM
help
If you say yes here you get support for the
Simtek STK17TA8 timekeeping chip.
This driver can also be built as a module. If so, the module
will be called rtc-stk17ta8.
config RTC_DRV_M48T86
tristate "ST M48T86/Dallas DS12887"
depends on HAS_IOMEM
help
If you say Y here you will get support for the
ST M48T86 and Dallas DS12887 RTC chips.
This driver can also be built as a module. If so, the module
will be called rtc-m48t86.
config RTC_DRV_M48T35
tristate "ST M48T35"
depends on HAS_IOMEM
help
If you say Y here you will get support for the
ST M48T35 RTC chip.
This driver can also be built as a module, if so, the module
will be called "rtc-m48t35".
config RTC_DRV_M48T59
tristate "ST M48T59/M48T08/M48T02"
depends on HAS_IOMEM
help
If you say Y here you will get support for the
ST M48T59 RTC chip and compatible ST M48T08 and M48T02.
These chips are usually found in Sun SPARC and UltraSPARC
workstations.
This driver can also be built as a module, if so, the module
will be called "rtc-m48t59".
config RTC_DRV_MSM6242
tristate "Oki MSM6242"
depends on HAS_IOMEM
help
If you say yes here you get support for the Oki MSM6242
timekeeping chip. It is used in some Amiga models (e.g. A2000).
This driver can also be built as a module. If so, the module
will be called rtc-msm6242.
config RTC_DRV_BQ4802
tristate "TI BQ4802"
depends on HAS_IOMEM && HAS_IOPORT
depends on SPARC || COMPILE_TEST
help
If you say Y here you will get support for the TI
BQ4802 RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-bq4802.
config RTC_DRV_RP5C01
tristate "Ricoh RP5C01"
depends on HAS_IOMEM
help
If you say yes here you get support for the Ricoh RP5C01
timekeeping chip. It is used in some Amiga models (e.g. A3000
and A4000).
This driver can also be built as a module. If so, the module
will be called rtc-rp5c01.
config RTC_DRV_GAMECUBE
tristate "Nintendo GameCube, Wii and Wii U RTC"
depends on GAMECUBE || WII || COMPILE_TEST
select REGMAP
help
If you say yes here you will get support for the RTC subsystem
of the Nintendo GameCube, Wii and Wii U.
This driver can also be built as a module. If so, the module
will be called "rtc-gamecube".
config RTC_DRV_WM831X
tristate "Wolfson Microelectronics WM831x RTC"
depends on MFD_WM831X
help
If you say yes here you will get support for the RTC subsystem
of the Wolfson Microelectronics WM831X series PMICs.
This driver can also be built as a module. If so, the module
will be called "rtc-wm831x".
config RTC_DRV_WM8350
tristate "Wolfson Microelectronics WM8350 RTC"
depends on MFD_WM8350
help
If you say yes here you will get support for the RTC subsystem
of the Wolfson Microelectronics WM8350.
This driver can also be built as a module. If so, the module
will be called "rtc-wm8350".
config RTC_DRV_SC27XX
tristate "Spreadtrum SC27xx RTC"
depends on MFD_SC27XX_PMIC || COMPILE_TEST
help
If you say Y here you will get support for the RTC subsystem
of the Spreadtrum SC27xx series PMICs. The SC27xx series PMICs
includes the SC2720, SC2721, SC2723, SC2730 and SC2731 chips.
This driver can also be built as a module. If so, the module
will be called rtc-sc27xx.
config RTC_DRV_SPEAR
tristate "SPEAR ST RTC"
depends on PLAT_SPEAR || COMPILE_TEST
default y
help
If you say Y here you will get support for the RTC found on
spear
config RTC_DRV_PCF50633
depends on MFD_PCF50633
tristate "NXP PCF50633 RTC"
help
If you say yes here you get support for the RTC subsystem of the
NXP PCF50633 used in embedded systems.
config RTC_DRV_AB8500
tristate "ST-Ericsson AB8500 RTC"
depends on AB8500_CORE
select RTC_INTF_DEV
select RTC_INTF_DEV_UIE_EMUL
help
Select this to enable the ST-Ericsson AB8500 power management IC RTC
support. This chip contains a battery- and capacitor-backed RTC.
config RTC_DRV_OPAL
tristate "IBM OPAL RTC driver"
depends on PPC_POWERNV
default y
help
If you say yes here you get support for the PowerNV platform RTC
driver based on OPAL interfaces.
This driver can also be built as a module. If so, the module
will be called rtc-opal.
config RTC_DRV_OPTEE
tristate "OP-TEE based RTC driver"
depends on OPTEE
help
Select this to get support for OP-TEE based RTC control on SoCs where
RTC are not accessible to the normal world (Linux).
This driver can also be built as a module. If so, the module
will be called rtc-optee.
config RTC_DRV_ZYNQMP
tristate "Xilinx Zynq Ultrascale+ MPSoC RTC"
depends on OF && HAS_IOMEM
help
If you say yes here you get support for the RTC controller found on
Xilinx Zynq Ultrascale+ MPSoC.
config RTC_DRV_CROS_EC
tristate "Chrome OS EC RTC driver"
depends on CROS_EC
help
If you say yes here you will get support for the
Chrome OS Embedded Controller's RTC.
This driver can also be built as a module. If so, the module
will be called rtc-cros-ec.
config RTC_DRV_NTXEC
tristate "Netronix embedded controller RTC"
depends on MFD_NTXEC
help
Say yes here if you want to support the RTC functionality of the
embedded controller found in certain e-book readers designed by the
original design manufacturer Netronix.
comment "on-CPU RTC drivers"
config RTC_DRV_ASM9260
tristate "Alphascale asm9260 RTC"
depends on MACH_ASM9260 || COMPILE_TEST
help
If you say yes here you get support for the RTC on the
Alphascale asm9260 SoC.
This driver can also be built as a module. If so, the module
will be called rtc-asm9260.
config RTC_DRV_DIGICOLOR
tristate "Conexant Digicolor RTC"
depends on ARCH_DIGICOLOR || COMPILE_TEST
help
If you say yes here you get support for the RTC on Conexant
Digicolor platforms. This currently includes the CX92755 SoC.
This driver can also be built as a module. If so, the module
will be called rtc-digicolor.
config RTC_DRV_IMXDI
tristate "Freescale IMX DryIce Real Time Clock"
depends on ARCH_MXC
depends on OF
help
Support for Freescale IMX DryIce RTC
This driver can also be built as a module, if so, the module
will be called "rtc-imxdi".
config RTC_DRV_FSL_FTM_ALARM
tristate "Freescale FlexTimer alarm timer"
depends on ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST
help
For the FlexTimer in LS1012A, LS1021A, LS1028A, LS1043A, LS1046A,
LS1088A, LS208xA, we can use FTM as the wakeup source.
Say y here to enable FTM alarm support. The FTM alarm provides
alarm functions for wakeup system from deep sleep.
This driver can also be built as a module, if so, the module
will be called "rtc-fsl-ftm-alarm".
config RTC_DRV_MESON
tristate "Amlogic Meson RTC"
depends on (ARM && ARCH_MESON) || COMPILE_TEST
select REGMAP_MMIO
help
Support for the RTC block on the Amlogic Meson6, Meson8, Meson8b
and Meson8m2 SoCs.
This driver can also be built as a module, if so, the module
will be called "rtc-meson".
config RTC_DRV_MESON_VRTC
tristate "Amlogic Meson Virtual RTC"
depends on ARCH_MESON || COMPILE_TEST
default m if ARCH_MESON
help
If you say yes here you will get support for the
Virtual RTC of Amlogic SoCs.
This driver can also be built as a module. If so, the module
will be called rtc-meson-vrtc.
config RTC_DRV_OMAP
tristate "TI OMAP Real Time Clock"
depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
depends on OF
depends on PINCTRL
select GENERIC_PINCONF
help
Say "yes" here to support the on chip real time clock
present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
This driver can also be built as a module, if so, module
will be called rtc-omap.
config RTC_DRV_S3C
tristate "Samsung S3C series SoC RTC"
depends on ARCH_EXYNOS || ARCH_S3C64XX || ARCH_S5PV210 || \
COMPILE_TEST
help
RTC (Realtime Clock) driver for the clock inbuilt into the
Samsung S3C64XX series of SoCs. This can provide periodic
interrupt rates from 1Hz to 64Hz for user programs, and
wakeup from Alarm.
This driver can also be build as a module. If so, the module
will be called rtc-s3c.
config RTC_DRV_EP93XX
tristate "Cirrus Logic EP93XX"
depends on ARCH_EP93XX || COMPILE_TEST
help
If you say yes here you get support for the
RTC embedded in the Cirrus Logic EP93XX processors.
This driver can also be built as a module. If so, the module
will be called rtc-ep93xx.
config RTC_DRV_SA1100
tristate "SA11x0/PXA2xx/PXA910"
depends on ARCH_SA1100 || ARCH_PXA || ARCH_MMP
help
If you say Y here you will get access to the real time clock
built into your SA11x0 or PXA2xx CPU.
To compile this driver as a module, choose M here: the
module will be called rtc-sa1100.
config RTC_DRV_SH
tristate "SuperH On-Chip RTC"
depends on SUPERH || ARCH_RENESAS
help
Say Y here to enable support for the on-chip RTC found in
most SuperH processors. This RTC is also found in RZ/A SoCs.
To compile this driver as a module, choose M here: the
module will be called rtc-sh.
config RTC_DRV_SUNPLUS
tristate "Sunplus SP7021 RTC"
depends on SOC_SP7021
help
Say 'yes' to get support for the real-time clock present in
Sunplus SP7021 - a SoC for industrial applications. It provides
RTC status check, timer/alarm functionalities, user data
reservation with the battery over 2.5V, RTC power status check
and battery charge.
This driver can also be built as a module. If so, the module
will be called rtc-sunplus.
config RTC_DRV_PL030
tristate "ARM AMBA PL030 RTC"
depends on ARM_AMBA
help
If you say Y here you will get access to ARM AMBA
PrimeCell PL030 RTC found on certain ARM SOCs.
To compile this driver as a module, choose M here: the
module will be called rtc-pl030.
config RTC_DRV_PL031
tristate "ARM AMBA PL031 RTC"
depends on ARM_AMBA
help
If you say Y here you will get access to ARM AMBA
PrimeCell PL031 RTC found on certain ARM SOCs.
To compile this driver as a module, choose M here: the
module will be called rtc-pl031.
config RTC_DRV_AT91RM9200
tristate "AT91RM9200 or some AT91SAM9 RTC"
depends on ARCH_AT91 || COMPILE_TEST
depends on OF
help
Driver for the internal RTC (Realtime Clock) module found on
Atmel AT91RM9200's and some AT91SAM9 chips. On AT91SAM9 chips
this is powered by the backup power supply.
config RTC_DRV_AT91SAM9
tristate "AT91SAM9 RTT as RTC"
depends on ARCH_AT91 || COMPILE_TEST
depends on OF && HAS_IOMEM
select MFD_SYSCON
help
Some AT91SAM9 SoCs provide an RTT (Real Time Timer) block which
can be used as an RTC thanks to the backup power supply (e.g. a
small coin cell battery) which keeps this block and the GPBR
(General Purpose Backup Registers) block powered when the device
is shutdown.
Some AT91SAM9 SoCs provide a real RTC block, on those ones you'd
probably want to use the real RTC block instead of the "RTT as an
RTC" driver.
config RTC_DRV_AU1XXX
tristate "Au1xxx Counter0 RTC support"
depends on MIPS_ALCHEMY
help
This is a driver for the Au1xxx on-chip Counter0 (Time-Of-Year
counter) to be used as a RTC.
This driver can also be built as a module. If so, the module
will be called rtc-au1xxx.
config RTC_DRV_RS5C313
tristate "Ricoh RS5C313"
depends on SH_LANDISK
help
If you say yes here you get support for the Ricoh RS5C313 RTC chips.
config RTC_DRV_RZN1
tristate "Renesas RZ/N1 RTC"
depends on ARCH_RZN1 || COMPILE_TEST
depends on OF && HAS_IOMEM
help
If you say yes here you get support for the Renesas RZ/N1 RTC.
config RTC_DRV_GENERIC
tristate "Generic RTC support"
# Please consider writing a new RTC driver instead of using the generic
# RTC abstraction
depends on PARISC || M68K || PPC || SUPERH || COMPILE_TEST
help
Say Y or M here to enable RTC support on systems using the generic
RTC abstraction. If you do not know what you are doing, you should
just say Y.
config RTC_DRV_PXA
tristate "PXA27x/PXA3xx"
depends on ARCH_PXA
select RTC_DRV_SA1100
help
If you say Y here you will get access to the real time clock
built into your PXA27x or PXA3xx CPU. This RTC is actually 2 RTCs
consisting of an SA1100 compatible RTC and the extended PXA RTC.
This RTC driver uses PXA RTC registers available since pxa27x
series (RDxR, RYxR) instead of legacy RCNR, RTAR.
config RTC_DRV_VT8500
tristate "VIA/WonderMedia 85xx SoC RTC"
depends on ARCH_VT8500 || COMPILE_TEST
help
If you say Y here you will get access to the real time clock
built into your VIA VT8500 SoC or its relatives.
config RTC_DRV_SUN4V
bool "SUN4V Hypervisor RTC"
depends on SPARC64
help
If you say Y here you will get support for the Hypervisor
based RTC on SUN4V systems.
config RTC_DRV_SUN6I
bool "Allwinner A31 RTC"
default MACH_SUN6I || MACH_SUN8I
depends on COMMON_CLK
depends on ARCH_SUNXI || COMPILE_TEST
help
If you say Y here you will get support for the RTC found in
some Allwinner SoCs like the A31 or the A64.
config RTC_DRV_SUNXI
tristate "Allwinner sun4i/sun7i RTC"
depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
help
If you say Y here you will get support for the RTC found on
Allwinner A10/A20.
config RTC_DRV_STARFIRE
bool "Starfire RTC"
depends on SPARC64
help
If you say Y here you will get support for the RTC found on
Starfire systems.
config RTC_DRV_MV
tristate "Marvell SoC RTC"
depends on ARCH_DOVE || ARCH_MVEBU || COMPILE_TEST
help
If you say yes here you will get support for the in-chip RTC
that can be found in some of Marvell's SoC devices, such as
the Kirkwood 88F6281 and 88F6192.
This driver can also be built as a module. If so, the module
will be called rtc-mv.
config RTC_DRV_ARMADA38X
tristate "Armada 38x Marvell SoC RTC"
depends on ARCH_MVEBU || COMPILE_TEST
depends on OF
help
If you say yes here you will get support for the in-chip RTC
that can be found in the Armada 38x Marvell's SoC device
This driver can also be built as a module. If so, the module
will be called armada38x-rtc.
config RTC_DRV_CADENCE
tristate "Cadence RTC driver"
depends on OF && HAS_IOMEM
help
If you say Y here you will get access to Cadence RTC IP
found on certain SOCs.
To compile this driver as a module, choose M here: the
module will be called rtc-cadence.
config RTC_DRV_FTRTC010
tristate "Faraday Technology FTRTC010 RTC"
depends on HAS_IOMEM
default ARCH_GEMINI
help
If you say Y here you will get support for the
Faraday Technolog FTRTC010 found on e.g. Gemini SoC's.
This driver can also be built as a module. If so, the module
will be called rtc-ftrtc010.
config RTC_DRV_PS3
tristate "PS3 RTC"
depends on PPC_PS3
help
If you say yes here you will get support for the RTC on PS3.
This driver can also be built as a module. If so, the module
will be called rtc-ps3.
config RTC_DRV_STMP
tristate "Freescale STMP3xxx/i.MX23/i.MX28 RTC"
depends on ARCH_MXS || COMPILE_TEST
select STMP_DEVICE
help
If you say yes here you will get support for the onboard
STMP3xxx/i.MX23/i.MX28 RTC.
This driver can also be built as a module. If so, the module
will be called rtc-stmp3xxx.
config RTC_DRV_PCAP
tristate "PCAP RTC"
depends on EZX_PCAP
help
If you say Y here you will get support for the RTC found on
the PCAP2 ASIC used on some Motorola phones.
config RTC_DRV_MC13XXX
depends on MFD_MC13XXX
tristate "Freescale MC13xxx RTC"
help
This enables support for the RTCs found on Freescale's PMICs
MC13783 and MC13892.
config RTC_DRV_MPC5121
tristate "Freescale MPC5121 built-in RTC"
depends on PPC_MPC512x || PPC_MPC52xx
help
If you say yes here you will get support for the
built-in RTC on MPC5121 or on MPC5200.
This driver can also be built as a module. If so, the module
will be called rtc-mpc5121.
config RTC_DRV_JZ4740
tristate "Ingenic JZ4740 SoC"
depends on MIPS || COMPILE_TEST
depends on OF && COMMON_CLK
help
If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
controllers.
This driver can also be built as a module. If so, the module
will be called rtc-jz4740.
config RTC_DRV_LOONGSON
tristate "Loongson On-chip RTC"
depends on MACH_LOONGSON32 || MACH_LOONGSON64 || COMPILE_TEST
select REGMAP_MMIO
help
This is a driver for the Loongson on-chip Counter0 (Time-Of-Year
counter) to be used as a RTC.
It can be found on Loongson-1 series cpu, Loongson-2K series cpu
and Loongson LS7A bridge chips.
This driver can also be built as a module. If so, the module
will be called rtc-loongson.
config RTC_DRV_LPC24XX
tristate "NXP RTC for LPC178x/18xx/408x/43xx"
depends on ARCH_LPC18XX || COMPILE_TEST
depends on OF && HAS_IOMEM
help
This enables support for the NXP RTC found which can be found on
NXP LPC178x/18xx/408x/43xx devices.
If you have one of the devices above enable this driver to use
the hardware RTC. This driver can also be built as a module. If
so, the module will be called rtc-lpc24xx.
config RTC_DRV_LPC32XX
depends on ARCH_LPC32XX || COMPILE_TEST
tristate "NXP LPC32XX RTC"
help
This enables support for the NXP RTC in the LPC32XX
This driver can also be built as a module. If so, the module
will be called rtc-lpc32xx.
config RTC_DRV_PM8XXX
tristate "Qualcomm PMIC8XXX RTC"
depends on MFD_PM8XXX || MFD_SPMI_PMIC || COMPILE_TEST
help
If you say yes here you get support for the
Qualcomm PMIC8XXX RTC.
To compile this driver as a module, choose M here: the
module will be called rtc-pm8xxx.
config RTC_DRV_TEGRA
tristate "NVIDIA Tegra Internal RTC driver"
depends on ARCH_TEGRA || COMPILE_TEST
help
If you say yes here you get support for the
Tegra 200 series internal RTC module.
This drive can also be built as a module. If so, the module
will be called rtc-tegra.
config RTC_DRV_MXC
tristate "Freescale MXC Real Time Clock"
depends on ARCH_MXC || COMPILE_TEST
depends on HAS_IOMEM
depends on OF
help
If you say yes here you get support for the Freescale MXC
RTC module.
This driver can also be built as a module, if so, the module
will be called "rtc-mxc".
config RTC_DRV_MXC_V2
tristate "Freescale MXC Real Time Clock for i.MX53"
depends on ARCH_MXC || COMPILE_TEST
depends on HAS_IOMEM
depends on OF
help
If you say yes here you get support for the Freescale MXC
SRTC module in i.MX53 processor.
This driver can also be built as a module, if so, the module
will be called "rtc-mxc_v2".
config RTC_DRV_SNVS
tristate "Freescale SNVS RTC support"
select REGMAP_MMIO
depends on ARCH_MXC || COMPILE_TEST
depends on HAS_IOMEM
depends on OF
help
If you say yes here you get support for the Freescale SNVS
Low Power (LP) RTC module.
This driver can also be built as a module, if so, the module
will be called "rtc-snvs".
config RTC_DRV_BBNSM
tristate "NXP BBNSM RTC support"
select REGMAP_MMIO
depends on ARCH_MXC || COMPILE_TEST
depends on HAS_IOMEM
depends on OF
help
If you say yes here you get support for the NXP BBNSM RTC module.
This driver can also be built as a module, if so, the module
will be called "rtc-bbnsm".
config RTC_DRV_IMX_SC
depends on IMX_SCU
depends on HAVE_ARM_SMCCC
tristate "NXP i.MX System Controller RTC support"
help
If you say yes here you get support for the NXP i.MX System
Controller RTC module.
config RTC_DRV_ST_LPC
tristate "STMicroelectronics LPC RTC"
depends on ARCH_STI
depends on OF
help
Say Y here to include STMicroelectronics Low Power Controller
(LPC) based RTC support.
To compile this driver as a module, choose M here: the
module will be called rtc-st-lpc.
config RTC_DRV_MOXART
tristate "MOXA ART RTC"
depends on ARCH_MOXART || COMPILE_TEST
help
If you say yes here you get support for the MOXA ART
RTC module.
This driver can also be built as a module. If so, the module
will be called rtc-moxart
config RTC_DRV_MT2712
tristate "MediaTek MT2712 SoC based RTC"
depends on ARCH_MEDIATEK || COMPILE_TEST
help
This enables support for the real time clock built in the MediaTek
SoCs for MT2712.
This drive can also be built as a module. If so, the module
will be called rtc-mt2712.
config RTC_DRV_MT6397
tristate "MediaTek PMIC based RTC"
depends on MFD_MT6397 || (COMPILE_TEST && IRQ_DOMAIN)
help
This selects the MediaTek(R) RTC driver. RTC is part of MediaTek
MT6397 PMIC. You should enable MT6397 PMIC MFD before select
MediaTek(R) RTC driver.
If you want to use MediaTek(R) RTC interface, select Y or M here.
config RTC_DRV_MT7622
tristate "MediaTek SoC based RTC"
depends on ARCH_MEDIATEK || COMPILE_TEST
help
This enables support for the real time clock built in the MediaTek
SoCs.
This drive can also be built as a module. If so, the module
will be called rtc-mt7622.
config RTC_DRV_XGENE
tristate "APM X-Gene RTC"
depends on HAS_IOMEM
depends on ARCH_XGENE || COMPILE_TEST
help
If you say yes here you get support for the APM X-Gene SoC real time
clock.
This driver can also be built as a module, if so, the module
will be called "rtc-xgene".
config RTC_DRV_PIC32
tristate "Microchip PIC32 RTC"
depends on MACH_PIC32
default y
help
If you say yes here you get support for the PIC32 RTC module.
This driver can also be built as a module. If so, the module
will be called rtc-pic32
config RTC_DRV_R7301
tristate "EPSON TOYOCOM RTC-7301SF/DG"
select REGMAP_MMIO
depends on OF && HAS_IOMEM
help
If you say yes here you get support for the EPSON TOYOCOM
RTC-7301SF/DG chips.
This driver can also be built as a module. If so, the module
will be called rtc-r7301.
config RTC_DRV_STM32
tristate "STM32 RTC"
select REGMAP_MMIO
depends on ARCH_STM32 || COMPILE_TEST
help
If you say yes here you get support for the STM32 On-Chip
Real Time Clock.
This driver can also be built as a module, if so, the module
will be called "rtc-stm32".
config RTC_DRV_CPCAP
depends on MFD_CPCAP
tristate "Motorola CPCAP RTC"
help
Say y here for CPCAP rtc found on some Motorola phones
and tablets such as Droid 4.
config RTC_DRV_RTD119X
bool "Realtek RTD129x RTC"
depends on ARCH_REALTEK || COMPILE_TEST
default ARCH_REALTEK
help
If you say yes here, you get support for the RTD1295 SoC
Real Time Clock.
config RTC_DRV_ASPEED
tristate "ASPEED RTC"
depends on OF
depends on ARCH_ASPEED || COMPILE_TEST
help
If you say yes here you get support for the ASPEED BMC SoC real time
clocks.
This driver can also be built as a module, if so, the module
will be called "rtc-aspeed".
config RTC_DRV_TI_K3
tristate "TI K3 RTC"
depends on ARCH_K3 || COMPILE_TEST
select REGMAP_MMIO
help
If you say yes here you get support for the Texas Instruments's
Real Time Clock for K3 architecture.
This driver can also be built as a module, if so, the module
will be called "rtc-ti-k3".
comment "HID Sensor RTC drivers"
config RTC_DRV_HID_SENSOR_TIME
tristate "HID Sensor Time"
depends on USB_HID
depends on HID_SENSOR_HUB && IIO
select HID_SENSOR_IIO_COMMON
help
Say yes here to build support for the HID Sensors of type Time.
This drivers makes such sensors available as RTCs.
If this driver is compiled as a module, it will be named
rtc-hid-sensor-time.
config RTC_DRV_GOLDFISH
tristate "Goldfish Real Time Clock"
depends on HAS_IOMEM
help
Say yes to enable RTC driver for the Goldfish based virtual platform.
Goldfish is a code name for the virtual platform developed by Google
for Android emulation.
config RTC_DRV_WILCO_EC
tristate "Wilco EC RTC"
depends on WILCO_EC
default m
help
If you say yes here, you get read/write support for the Real Time
Clock on the Wilco Embedded Controller (Wilco is a kind of Chromebook)
This can also be built as a module. If so, the module will
be named "rtc_wilco_ec".
config RTC_DRV_MSC313
tristate "MStar MSC313 RTC"
depends on ARCH_MSTARV7 || COMPILE_TEST
help
If you say yes here you get support for the Mstar MSC313e On-Chip
Real Time Clock.
This driver can also be built as a module, if so, the module
will be called "rtc-msc313".
config RTC_DRV_POLARFIRE_SOC
tristate "Microchip PolarFire SoC built-in RTC"
depends on ARCH_MICROCHIP_POLARFIRE
help
If you say yes here you will get support for the
built-in RTC on Polarfire SoC.
This driver can also be built as a module, if so, the module
will be called "rtc-mpfs".
endif # RTC_CLASS