Maxim/Dallas DS2404

modulename: rtc-ds2404.ko

configname: CONFIG_RTC_DRV_DS2404

Linux Kernel Configuration
└─>Device Drivers
└─>Real Time Clock
└─>Maxim/Dallas DS2404
In linux kernel since version 3.1 (release Date: 2011-10-24)  
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.

source code: