Hi All, The various CAN transceivers I've seen that support CAN-FD appear to be fairly limited in terms of their supported max speed. I've seen some transceivers that only support upto 2 Mbps while others support up to 5 Mbps. This is a problem when the SoC's CAN IP can support even higher values than the transceiver.
Ideally I would think the MCAN driver should at the very least know what the maximum speed supported by the transceiver it is connected to. Therefore, either throwing an error if a request for a speed above the transceiver capability or lower the requested speed to what ever the transceiver is capability of doing. In either case I do not know if it makes sense to add a DT property within the MCAN driver or create another subnode that contains this information. For example I see some ethernet drivers support "fixed-link" subnode which is trying to solve a similar issue. Should I go with that approach? If so would it make sense to reuse fixed-link even though majority of its properties aren't applicable? Or should I create something similar such as fixed-can-transceiver?
