Dallas/Maxim DS1302

modulename: rtc-ds1302.ko

configname: CONFIG_RTC_DRV_DS1302

Linux Kernel Configuration
└─>Device Drivers
└─>Real Time Clock
└─>SPI support
└─>Dallas/Maxim DS1302
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
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.

source code: