Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057
modulename: rtc-ds1307.ko
configname: CONFIG_RTC_DRV_DS1307
Linux Kernel Configuration
└─>Device Drivers
└─>Real Time Clock
└─>Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
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.
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.