MCP2517FD/MCP2518FD CAN controller driver errors on IMX8MM Verdin

[edwaugh]

Hi Rafael,
Happy new year. We are seeing driver crashes when bringing the CAN interface up and down as described here:

Kernel hangs due CAN driver

Hi @gauravks, Did you try patch from thread you mentioned? Toradex downstream kernel still uses the same unpatched driver with several known issues. Here’s link to message with patch You didn’t tell anything about SPI clock rate you are using. It should be as high as possible, limited by your MCP2517FD half clock. I’m busy with other tasks. If you wish me to reproduce your issue much much later on MCP2518FD (I don’t have MCP2517FD), please patch kernel first, then provide detail instructions …

We do see the TEFIF message during these transistions. The reason we do this is that our device sleeps every day, so we shut down all can devices and bring the bus to the down state.
@gauravks can confirm the SPI rate we have set in the device tree.
Thanks
Ed