default or selected kernelversion does not have config value CONFIG_COPS_TANGENT.
Result is shown for kernelversion 6.9.9
Tangent firmware support
configname: CONFIG_COPS_TANGENT
Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Tangent firmware support
In linux kernel since version 2.6.12
Support COPS compatible cards with Tangent style firmware (Tangent
ATB_II, Novell NL-1000, Daystar Digital LT-200.
ATB_II, Novell NL-1000, Daystar Digital LT-200.