On 11/5/20 7:11 PM, Patrick Menschel wrote: >>> 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? > > CRC Errors above 16Mhz spi frequency. Ok - Which SoC are you using? rpi4? 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 |