How to connect SPI on Jetson Nano B01 Dev Kit, version from January 2023

Hi phamxuanvi93,

Please help to share the result of the following command for Jetpack version in use

$cat /etc/nv_tegra_release

Your result seems unexpected. Do you save the pinmux configuration in Jetson-IO and reboot the board to apply?

Could you help to refer the following thread step-by-step for SPI loopback test?
Jetson Nano SPI Bus Not Working - #10 by KevinFFF