Switching among serial consoles

[Michal Simek]

Hi,

long time ago I was playing with switching among consoles.
I have two IPs with the same driver where main console is probed and
used which is visible via dm tree.

 serial        1  [ + ]   serial_zynq           |   |-- serial at ff000000
 serial        2  [   ]   serial_zynq           |   |-- serial at ff010000

then I have also dcc which can be also used as a console

 serial        0  [   ]   arm_dcc               |-- dcc

Lastly I have enabled netconsole feature.

I have no problem to switch between serial at ff000000 and nc but I can't
switch it to dcc or second instance.

dhcp
setenv ncip 192.168.0.105
setenv nc 'setenv stdout nc;setenv stdin nc'
setenv dcc 'setenv stdout dcc;setenv stdin dcc'
setenv serial0 'setenv stdout serial at ff000000;setenv stdin serial at ff000000'
setenv serial1 'setenv stdout serial at ff010000;setenv stdin serial at ff010000'
run nc

and then via netconsole

run serial0

works to get back.


Console info is showing only available and registered instances.

ZynqMP> con
List of available devices:
serial at ff000000 00000007 IO
serial   00000003 IO stdin stdout stderr
nulldev  00000003 IO
nc       00000003 IO

It means the question is how to probe second instance of serial_zynq
serial at ff010000 and dcc. I expect when probe is done it will show up in
console list and switch is possible.

I found SERIAL_SEARCH_ALL symbol but it is just search not probe.

I am quite sure that it was working in past but not sure if this was
before DM but I would like to know how you are doing it/testing it today.

Thanks,
Michal