On 10/26/20 2:59 AM, Drew Fustini 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 > Are there any additional parameters that you are specifying for > "dtoverlay" in config.txt, such as spimaxfrequency? Usually I only specify the IRQ. E.g.: For the https://wiki.seeedstudio.com/2-Channel-CAN-BUS-FD-Shield-for-Raspberry-Pi/ board I'm using: dtoverlay=mcp251xfd-spi0-0,interrupt=25 dtoverlay=mcp251xfd-spi1-0,interrupt=24 regards, 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 |