default or selected kernelversion does not have config value CONFIG_ATLAS7_TIMER.
Result is shown for kernelversion 6.9.9

Atlas7 timer driver

modulename: timer-atlas7.ko

configname: CONFIG_ATLAS7_TIMER

Linux Kernel Configuration
└─>Device Drivers
└─>Clock Source drivers
└─>Atlas7 timer driver
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Enables support for the Atlas7 timer.

source code: