default or selected kernelversion does not have config value CONFIG_MFD_TC6393XB.
Result is shown for kernelversion 6.9.9
Toshiba TC6393XB
modulename: tc6393xb.ko
configname: CONFIG_MFD_TC6393XB
Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Toshiba TC6393XB
In linux kernel since version 2.6.27 (release Date: 2008-10-09)
Support for Toshiba Mobile IO Controller TC6393XB