CONFIG_DEBUG_RCAR_GEN2_SCIF1 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Kernel low-level debugging messages via SCIF1 on R8A77470
configname: CONFIG_DEBUG_RCAR_GEN2_SCIF1
Kernel low-level debugging port
└─>Kernel low-level debugging messages via SCIF1 on R8A77470
In linux kernel since version 4.2 (release Date: 2015-08-30)
Say Y here if you want kernel low-level debugging support
via SCIF1 on Renesas RZ/G1C (R8A77470).
via SCIF1 on Renesas RZ/G1C (R8A77470).