>> Are there any additional parameters that you are specifying for >> "dtoverlay" in config.txt, such as spimaxfrequency? >> >> Thanks, >> Drew > > I'm seeing this message which makes me think my issue is that I am not > setting the oscillator as a dtoverlay param. > > [ 6.873081] CAN device driver interface > [ 6.879904] DEBUG mcp251xfd mcp251xfd_probe(): ENTER > [ 6.880068] spi_master spi0: will run message pump with realtime priority > [ 6.921312] mcp251xfd spi0.0 (unnamed net_device) (uninitialized): > Failed to detect MCP251xFD (osc=0x00000000). > > From /boot/config.txt > > [pi4] > dtoverlay=mcp251xfd-spi0-0 > > Could you please share what your experience has been like? > > thanks, > drew > I'm lacking hw currently, so I haven't tested yet. I believe OSC has to be set, so for a 40Mhz crystal dtoverlay=mcp251xfd-spi0-0,osc=40000000 -- Patrick
