On 12/6/20 11:18 AM, Sven Schuchmann wrote: > Hi all, > I am new to the list so sorry for any errors. > > I want to get Seeed "2 Channel CAN BUS FD Shield for Raspberry Pi" > https://wiki.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi/ > get to work on a Raspberry Pi Compute Module 4 IO Board > https://www.raspberrypi.org/products/compute-module-4-io-board > > I have installed the Raspberry Pi OS with Raspberry Pi Imager > > $ uname -a > Linux raspberrypi 5.4.79-v7l+ #1373 SMP Mon Nov 23 13:27:40 GMT 2020 armv7l GNU/Linux > > without any changes. Therefore I tried the following commands to load the overlay > > $ sudo dtoverlay spi0-1cs cs0_pin=24 > $ sudo dtoverlay mcp251xfd spi0-1 oscillator=40000000 speed=20000000 interrupt=18 Better add the overlays statically in the bootloader via config.txt: | dtoverlay=mcp251xfd,spi0-0,interrupt=18 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 |
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