ePaper Display using a NVIDIA Jetson Nano and SPI does not work

The tool works for Jetson Nano module with SD card slot. you can generate device tree files through jetson-io.py for a try. And apply the same to device tree and rebuild it. We have seen issue that the pins do not work as expected without clean re-flash. Please check
Jetson Nano FAQ

Q: How to configure the pinmux function of jetson Nano?
Q: Why pinmux setting does not work on some pins?