[mbed-tls] Looking for information regarding the long-term support of the MbedTls library.

Hello,

Currently, we are evaluating the MbedLib to be eventually used in small and midsized automotive ECUs.

* Since we have to follow the UNECE Regulation R155, R156, and ISO/SAE 21434 I need some information regarding the long-term support of the library and how the communication of bugs is organized?

* I also do not understand the involvement and responsibility of ARM company?

* Furthermore, I'm not sure if I understood the terms PSA and MbedTls and their mutual dependencies as well as the technical meaning?

I checked the web for I but did not find anything about it yet.

It would be just great if somebody can give me some hints or links to the information I am looking for. Regards                      Heico