KPSS Clock Controller

modulename: kpss-xcc.ko

configname: CONFIG_KPSS_XCC

Linux Kernel Configuration
└─>Device Drivers
└─>Common Clock Framework
└─>Support for Qualcomm's clock controllers
└─>KPSS Clock Controller
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Support for the Krait ACC and GCC clock controllers. Say Y
if you want to support CPU frequency scaling on devices such
as MSM8960, APQ8064, etc.

source code: