NXP PCF2123

modulename: rtc-pcf2123.ko

configname: CONFIG_RTC_DRV_PCF2123

Linux Kernel Configuration
└─>Device Drivers
└─>Real Time Clock
└─>NXP PCF2123
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
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.

source code: