On 11/4/20 7:48 PM, Patrick Menschel wrote:
> Hi,
> 
> I can confirm it works on a Pi 0w too.
> 
> pi@rpi-0w-1:~ $ dmesg | grep -Ei can\|spi
> [   29.478369] CAN device driver interface
> [   29.615519] spi_master spi0: will run message pump with realtime priority
> [   29.660342] mcp251xfd spi0.0 can0: MCP2517FD rev0.0 (-RX_INT
> +MAB_NO_WARN +CRC_REG +CRC_RX +CRC_TX +ECC -HD c:40.00MHz m:10.00MHz
> r:10.00MHz e:0.00MHz) successfully initialized.
> 
> Its just a bread board install and I had to reduce the Spi-Max-Frequency
> due to 10cm long cables. It least I believe it's the cable length.

What happens if you don't reduce the SPI frequency?

Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde           |
Embedded Linux                   | https://www.pengutronix.de  |
Vertretung West/Dortmund         | Phone: +49-231-2826-924     |
Amtsgericht Hildesheim, HRA 2686 | Fax:   +49-5121-206917-5555 |