OP zero 2+ H5 - can't read the devices /dev/ttyS*

[Joubix_01]

Hi,

I have a problem while taping the following command :

root@orangepizeroplus2:~# cat /dev/ttyS2
cat: /dev/ttyS2: Input/output error
root@orangepizeroplus2:~# cat /dev/ttyS1
cat: /dev/ttyS1: Input/output error
root@orangepizeroplus2:~# cat /dev/ttyS3
cat: /dev/ttyS3: Input/output error
root@orangepizeroplus2:~# cat /dev/ttyS0
^C
root@orangepizeroplus2:~#

Is there a way to activate those devices?

(I know that we can enable them using "script.fex" file  with OP H3 but I don't know how to do it with mainline kernel H5)

 

Please check the boot logs of the board here :

http://sprunge.us/dCLS

Please any help would be appreciated !!

[Igor]

https://docs.armbian.com/User-Guide_Allwinner_overlays/