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How to load xeno_16550A.ko module

Question asked by bflino on Feb 22, 2012
Latest reply on Mar 6, 2012 by bflino

Hello everybody,


I have compiled the kernel for BF518 so that the serial port support is provided by kernel modules.


I first tried successfully to use the bfin_5xx.ko module with:


insmod /lib/modules/

insmod /lib/modules/


within /etc/rc.

Serial port communication is working right at this point.

With bfin_5xx.ko loaded, dmesg command outputs:


bfin-uart: Blackfin serial driver

bfin-uart.0: ttyBF0 at MMIO 0xffc00400 (irq = 29) is a BFIN-UART


Now, before trying to load the xenomai serial port real time driver xeno_16550A, I have discarded bfin_5xx with:


rmmod bfin_5xx


and finally tried to load it:


cd /lib/modules/

modprobe xeno_16550A mem=0xffc00400 irq=29


but here the device hangs and reboots.


Any hint?

Thank you very much in advance