We used SPI communication between the audio chip VS1053B and the Jetson Nano core board, but SPI was not found in the device tree.
How to enable SPI communication
Hi li5181731,
Are you using the devkit or custom board for Jetson Nano?
What’s your Jetpack version in use?
Could you help to verify SPI with loopback test with the following instruction before using your audio chip?
Jetson Nano SPI Bus Not Working - #10 by KevinFFF
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