We have an iMX28 based platform running linux 2.6.35, built using LTIB
I want to use one of the AUARTS (ttySP2) as the console instead of DUART (ttyAM0)
I configured the iomux for AUART2 operation, configured CONFIG_SERIAL_MXS_AUART_CONSOLE=y in the kernel and changed the boot command line to use ttySP2 as the console (console=/dev/ttySP2,115200 rdinit=linuxrc rw gpmi).
As far as I know this is all I need to do.
However the kernel starts and appears to simply hang and nothing gets printed on the /dev/ttySP2 interface. Everything works fine when I set the boot command line to use /dev/ttyAM0 as the console.
Is it possible to do this and is there something else I need to do to get it to work.