SDX55 and SDX65 APCS Clock Controller

modulename: apcs-sdx55.ko

configname: CONFIG_QCOM_CLK_APCS_SDX55

Linux Kernel Configuration
└─>Device Drivers
└─>Common Clock Framework
└─>Support for Qualcomm's clock controllers
└─>SDX55 and SDX65 APCS Clock Controller
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Support for the APCS Clock Controller on SDX55, SDX65 platforms. The
APCS is managing the mux and divider which feeds the CPUs.
Say Y if you want to support CPU frequency scaling on devices
such as SDX55, SDX65.

source code: