Dear moderaters: I met such a problem when I enabling SPI. I am using a jetson nano 4GB with jetpack 4.6.3. And got a solution for jetson-io bug, and enabled the spi in th jetson-io table. After doing that, the registers dump is like below by sudo cat /sys/kernel/debug/tegra_pinctrl_reg | grep -…

Could you flash the board before you build the new kernel image? (i.e. could you flash the board with default BSP package?) [image] xcf1169119875: tegra210-porg-gpio-p3448-0000-b00.dtsi? Yes, you should modify this file to disable GPIO usage for SPI pins.

Problems in enabling SPI and disabling GPIOB

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano

KevinFFF June 8, 2023, 7:43am 3

Hi xcf1169119875,

Are you using the devkit or custom board for Jetson Nano?

Please refer to the following thread step-by-step to verify SPI with loopback test.
Jetson Nano SPI Bus Not Working - #10 by KevinFFF

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Problems in enabling SPI and disabling GPIOB

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