CONFIG_DEBUG_MSTARV7_PMUART is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Kernel low-level debugging messages via MSTARV7 PM UART
configname: CONFIG_DEBUG_MSTARV7_PMUART
Kernel low-level debugging port
└─>Kernel low-level debugging messages via MSTARV7 PM UART
In linux kernel since version 5.2 (release Date: 2019-07-07)
Say Y here if you want kernel low-level debugging support
for MSTAR ARMv7-based platforms on PM UART.
for MSTAR ARMv7-based platforms on PM UART.