Hello Trueshadow97
Look at Xavier agx spi jetpack 4.4 - #6 by jkiotprime and in that post we had discussed.
Use PI loopback test is working in Jetson nano with JETPACK 4.4
https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/hw_setup_jetson_io.html and follow GUI method till reboot. The same work flow takes care of things well and leading to SPIDEV_test.c work well … best regards //jk
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