On 11/1/20 11:49 PM, Drew Fustini wrote: >>>> Try these lines in /boot/config.txt >>>> >>>> dtoverlay=mcp251xfd-spi0-0,interrupt=25 >>>> dtoverlay=mcp251xfd-spi1-0,interrupt=16 If you use the above lines ^^, the patching of the overlay should not be necessary: > I changed this in mcp251xfd-spi1-0-overlay.dts: > - interrupts = <24 IRQ_TYPE_LEVEL_LOW>; > + interrupts = <16 IRQ_TYPE_LEVEL_LOW>; [...] > pi@raspberrypi:~$ dmesg | grep -Ei can\|spi > [ 14.663345] CAN device driver interface > [ 14.669552] spi_master spi0: will run message pump with realtime priority > [ 14.677102] mcp251xfd spi0.0 can0: MCP2517FD rev0.0 (-RX_INT > +MAB_NO_WARN +CRC_REG +CRC_RX +CRC_TX +ECC -HD c:40.00MHz m:20.00MHz > r:17.00MHz e:0.00MHz) successfully initialized. > [ 14.677833] spi_master spi1: will run message pump with realtime priority > [ 14.682667] mcp251xfd spi1.0 can1: MCP2517FD rev0.0 (-RX_INT > +MAB_NO_WARN +CRC_REG +CRC_RX +CRC_TX +ECC -HD c:40.00MHz m:20.00MHz > r:17.00MHz e:0.00MHz) successfully initialized. Note: the waveshare module uses a mcp2517fd, which has some erratas. You will experience error frames generated by sending mcp2517fd modules, during certain conditions. Sometimes CAN frames in the RX path are dropped. 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 |
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