hi we are trying to use the uart b [uart 0 ] cts and rts as gpio changed pinmux and flashed qpsi and build device tree and configured imu int pin but when try to the PX6 PX7 interrupt resource the system hangs without any log can any one help me on this ? pfa for modified dtsi file test.zip (7.8 KB…

px07 is working as input int but px06 is not working as per the design doc thanks

can i get feedback on my observation

[image] kathir1: gpio input interrupt from imu So, it is an input pin for Jetson. [image] KevinFFF: Why you run gpioset to configure their pin state? Could you answer this question?

just to check in output mode gpio is working

[image] KevinFFF: gpio-input = < TEGRA234_MAIN_GPIO(B, 0) TEGRA234_MAIN_GPIO(X, 6) TEGRA234_MAIN_GPIO(X, 7) If you want to use them as output, then they should not be configured like this. Please configure them in pinmux spreadsheet first. After you’ve confirmed that you’ve c…

after updated pinmux sheet as output i am able to probe 1.8 v from the pins , same if i configure as input and interrupt and giving pulse px7 gets irq but px6 is not able to get may i know why ??

Do you mean the issue is specific to PX.06? What’s the result if you’ve configure PX.06 as Output/Drive 1 in pinmux spreadsheet and run the command I shared? Could you get a scope to check its state?

[image] KevinFFF: at’s the result if you’ve configure PX.06 as Output/Drive 1 in pinmux spreadsheet and run the command I shared? Could you get a scope to check its state? sudo gpioset -c /dev/gpiochip0 120=1 ,getting 1.8v output

can you please tell us how px6 work as input

Please configure it as following in pinmux spreadsheet. [image] and simply run the following command on your board to check. # gpioget `gpiofind "PX.06"`

Uart b rts and cts as gpio mode in jetson orin nx

Robotics & Edge Computing Jetson Systems Jetson Orin NX

KevinFFF November 28, 2025, 9:45am 29

Okay, it seems the similar issue as Modify Pinmux/GPIO functions - custom Jetson Orin NX carrier - #24 by KevinFFF.
We’ve updated the pinmux spreadsheet to prevent user configuring this pin as input.

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Uart b rts and cts as gpio mode in jetson orin nx

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