> On 10/26/20 3:50 AM, Drew Fustini wrote: >> 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 > > Are you using CS0 of spi0? > What's the frequency of your OSC? > > Marc > mcp251xfd_osc_invalid(osc) is true according to the string. https://github.com/marckleinebudde/linux/blob/v5.4-rpi/mcp251xfd-20201022-54/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c#L552
