PIC32CX Ethernet and CANbus

[zorxd]

Hi
I'm new to Zephyr OS and find it very promising.

I'm looking at the documentation for the PIC32CX SG41. There is a supported development board (pic32cx_sg41_cult), which I happen to have on hands.
It doesn't list Ethernet or CANbus as a supported features, even though they are present on the board.
https://docs.zephyrproject.org/latest/boards/microchip/pic32c/pic32cx_sg41_cult/doc/index.html

The very similar SAM E54 board (sam_e54_cult) has Ethernet supported.
https://docs.zephyrproject.org/latest/boards/microchip/sam/sam_e54_cult/doc/index.html

Is it just because nobody put the effort yet into adding support for Ethernet on the PIC32CX? Could it be as simple as copying the Ethernet device tree binding from the SAM E54 into the PIC32CX SG41? It's the same gmac controller on the same pins.

What about CANbus? Can I just copy from a similar chip such as sama7d65?

[nandojve]

CC: @NhMchp

[zorxd]

I got Ethernet to work with a DT overlay. I will try to submit to the project for inclusion.

I couldn't get CANbus to work on the pic32cx_sg41_cult target. However, it compiles fine (not tested yet) when targeting same54_xpro board with a couple DT quirks.

I'm a bit confused on the difference between the Atmel and the Microchip drivers. What's the difference between same54_xpro and sam_e54_xpro? Both boards are listed as maintained. The first one uses Atmel drivers and supports CANbus. The second one uses Microchip drivers and doesn't support CANbus (yet?).
Which one would be the recommended drivers for the future?

Adding to the confusion, Microchip says binaries compiled for the SAM E54 are compatible with the PIC32CX SG41 (which explains why I can get a SAM E54 binary running on my PIC32CX SG41 board).