CONFIG_DEBUG_DC21285_PORT is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Kernel low-level debugging messages via footbridge serial port
configname: CONFIG_DEBUG_DC21285_PORT
Kernel low-level debugging port
└─>Kernel low-level debugging messages via footbridge serial port
In linux kernel since version 2.6.12
Say Y here if you want the debug print routines to direct
their output to the serial port in the DC21285 (Footbridge).
their output to the serial port in the DC21285 (Footbridge).