Broadcom STB wake-timer

modulename: rtc-brcmstb-waketimer.ko

configname: CONFIG_RTC_DRV_BRCMSTB

Linux Kernel Configuration
└─>Device Drivers
└─>Real Time Clock
└─>Broadcom STB wake-timer
In linux kernel since version 4.2 (release Date: 2015-08-30)  
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.

source code:
drivers/rtc/rtc-brcmstb-waketimer.c