I have the strange problem that after updating the Jetson Nano dev kit b002 SPI stops working. My test procedure: I flash a fresh OS with Jetpack 4.6.2 on to the Jetson (with or without SDK dos not matter). Enable the SPI pins via JetsonIO.py Reboot Load driver in the kernel with: sudo modprobe …

You could also use JP4.6.2 with the steps in that thread to verify SPI loopback test. Using the latest release is just making the status to be synchronized with us.

SPI stops working after sudo apt upgrade on a Jetson Nano

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano

KevinFFF June 6, 2023, 7:03am 7

It seems the pinmux register value wrong for SPI usage.
Could you refer to the following thread to verify SPI loopback test step-by-step?
Jetson Nano SPI Bus Not Working - #10 by KevinFFF

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SPI stops working after sudo apt upgrade on a Jetson Nano

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