AM3352: Change ttyS0 to ttyO0

Tony Tang

Part Number: AM3352

customer upgrade system from SDK6.0 to Processor SDK6.0, in the old kernel 3.2, the UART default name is ttyO0, now it is ttyS0,

How to map ttyS0 to ttyO0, then no need to modify application code.

Or how to change the name of ttyS0 to ttyO0?

over 6 years ago

0 Bin Liu over 6 years ago

TI__Guru**** 168311 points

Hi Tony,

You can use udev rules to change kernel dev name (ttyS0) to something else (ttyO0).

0 user5872934 over 6 years ago

Prodigy 190 points

Well, udev could change the name.

However, my problem is that i'm using the old file system in kernel3.2 and the old uart's initial name seems to be ttyO* without udev rules.

Could change uart initial name in the new kernel ? The initial output of debug serial:

[ 0.000420] Console: colour dummy device 80x30
[ 0.000450] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0'
[ 0.000457] This ensures that you still see kernel messages. Please

0 Bin Liu over 6 years ago in reply to user5872934

TI__Guru**** 168311 points

user5872934 said:
Could change uart initial name in the new kernel ?

I guess you could, but why not use udev, it is simple and easy.

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AM3352: Change ttyS0 to ttyO0