kernelconfig_penguin
CONFIG_DEBUG_IMX23_UART is not available for the default architecture x86.
Result is shown for architecture arm

i.MX23 Debug UART

configname: CONFIG_DEBUG_IMX23_UART

Kernel low-level debugging port
└─> i.MX23 Debug UART

Say Y here if you want kernel low-level debugging support
on i.MX23.