AGX Orin cannot control 40-pins output

[KevinFFF]

@eric.ma1

i just use board pin 13, and it could work, but sometimes the HIGH value is 3.3V, the LOW value is 1.6V. And sometimes the HIGH value is 1.6V, the LOW value is 0V, is it correct?

HIGH should be 3.3V and LOW should be 0V.

First, I would suggest you configuring pinmux and refer to Jetson AGX Orin Platform Adaptation and Bring-Up — NVIDIA Jetson Linux Developer Guide to apply the change.

Second, please apply the patch in 40hdr - SPI1 gpio padctl register bit[10] effect by gpiod tools in JP6 - #20 by KevinFFF for the known issue we found in JP6.x.