default or selected kernelversion does not have config value CONFIG_DRM_PS8622.
Result is shown for kernelversion 5.4.229

Parade eDP/LVDS bridge

modulename: ps8622.ko

configname: CONFIG_DRM_PS8622

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Parade eDP/LVDS bridge
In linux kernel since version 4.1 (release Date: 2015-06-21)  
parade eDP-LVDS bridge chip driver.

source code: