cat /sys/firmware/devicetree/base/spi@3210000/sppi@0/compatible spidevroot@lanner-desktop:~/workspace# hexdump /sys/firmware/devicetree/base/spi@32100000/spi@0/spi-max-frequency 0000000 fa02 80f0 0000004 root@lanner-desktop:~/workspace# ./spidev_test /-D /dev/spidev0.0 -v spi mode: 0x0 bits per word: 8 max speed: 500000 Hz (500 KHz) TX | FF FF FF FF FF FF 40 00 00 00 00 95 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF F0 0D | ......@......................ð. RX | FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF | ................................ root@lanner-desktop:~/workspace#