CONFIG_AT91_EARLY_DBGU1 is not available for the default architecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_AT91_EARLY_DBGU1.
Result is shown for kernelversion 5.3.17

DBGU on 9263 and 9g45

configname: CONFIG_AT91_EARLY_DBGU1

Select a UART for early kernel messages
└─> DBGU on 9263 and 9g45