Serial console can be extremely convenient if you need to access your imx28-board when it is not connected to a monitor and network remote access is not available.
If you intend to use the serial port for a software application running on the IMX28- board, there is a bit of configuration required to disable the console from using this port. By default, the serial port is configured as a console port for interacting with the Linux os shell. The following steps will guide you through disabling the port from console access.
Step1: while passing bootargs env variable to uboot, edit console parameter from “console=ttymxc1” to “console=tty1”
Step 2:
--> if you are usnig Buildroot, openembedded, yocto, Debian based root filesystem means comment following line in “etc/inittab” file,
T0:23:respawn:/sbin/getty -L ttymxc1 115200 vt100
--> if you are using ltib based root file system means add following lines at starting line in “etc/rc.d/rc_mxc.S” file,
if grep -sq tty1 /proc/cmdline; then
/sbin/getty -L tty1 115200 vt100
fi
Thanks & Regards,
RAY BIZ Tech.
