Re: mcp251xfd on RPi 5.4 downstream

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On Sun, Oct 25, 2020 at 8:59 PM Drew Fustini <drew@xxxxxxxxxxxxxxx> wrote:
>
> On Sun, Oct 25, 2020 at 1:42 PM Patrick Menschel <menschel.p@xxxxxxxxx> wrote:
> >
> > > The
> > > https://github.com/marckleinebudde/linux/commits/v5.4-rpi/mcp251xfd-20201022-54
> > > branch already contains overlays:
> > >
> > > https://github.com/marckleinebudde/linux/commit/9e02abd4fe591b2d7f369cdaaaf8f1269b7c8693
> > >
> > > Marc
> > >
> >
> > OK, I should have known better ;-)
> >
> > --
> > Patrick
>
> 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



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