TX2 GPIO power on in an uncertain state

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

When I power on my customed carrier board, I found my some GPIOS（B22 GPIO13_BT_WAKE_AP） in an uncertain state, It’s about 0.52V.
And when i start ok and load my gpio drivers, it goes OK and return to 0V.

Is this a correct state? Have a hardware design problem?

And when i turn on my customed carrier board, some leds and buzzer will lost control untill load my gpio drivers.
Uboot config could fix it?

2

hello jetsun2011,

you’ll refer to developer guide for customization, Jetson TX2 Pinmux and GPIO Configuration.
please access pinmux spreadsheet through download center.
since you’re working with customize carrier board, please also access Jetson TX2 Platform Adaptation and Bring-Up Guide for details.
thanks