It does include a timeout to ensure that the system does not
totally freeze when there is nothing connected to read.
+config OC_ETM
+ bool "On-chip ETM and ETB"
+ select ARM_AMBA
+ help
+ Enables the on-chip embedded trace macrocell and embedded trace
+ buffer driver that will allow you to collect traces of the
+ kernel code.
+
config DEBUG_DC21285_PORT
bool "Kernel low-level debugging messages via footbridge serial port"
depends on DEBUG_LL && FOOTBRIDGE