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UART Loop back Test, getting superfluous data

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Hi,

I am working on RZ/G1H platform.  I tested the UART with loopback by connecting RX and TX. 

When I connect the Tx to Rx and write “testing” to the driver, I receive back something like the following:

# cat /dev/ttySC0 &

#echo testing > /dev/ttySC0

testing



testing







testing
......

If I remove the connection then only it stops printing.

I am getting more echo's than just the one I would expect, as well as a lot of whitespace.  Why is this so? Shouldn’t the driver just print “testing” on the command line once?

What I need to change, in the driver ?

Attached the log for your reference.

 (Please visit the site to view this file)

Thanks and Regards

Devendra


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