On 12/6/20 3:56 PM, Patrick Menschel wrote: >> dtoverlay=spi1-1cs,cs0_pin=18 > However this line is not be necessary. > It sets up spidev for spi1. > https://github.com/raspberrypi/linux/blob/rpi-5.4.y/arch/arm/boot/dts/overlays/spi1-1cs-overlay.dts#L34 Yes, but it configures the cs0 for spi1 in the first place. > The next overlay removes spidev again. > https://github.com/raspberrypi/linux/blob/rpi-5.4.y/arch/arm/boot/dts/overlays/mcp251xfd-overlay.dts#L35 ACK, but only the spidev. 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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