Hello Florian,

Thanks for replying.

Those chips usually do not require a driver per-se, but just a user space program to load their firmware and configuration blob.


Well that would be easier / better.

If you can figure out how the AR7400 is connected (presumably via MII to one port of the switch) you surely can extract the firmware image and the PIB (configuration blob). Then you should be able to use the open-plc utilities [1] to load those files and configure your PLC chip (security key etc...), those utilities are already packaged in OpenWrt.

[1]: https://github.com/qca/open-plc-utils


Any hint how do I do that? :)

As I said, unfortunately I am pretty clueless on that front.

Jacek
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