Config gpio14 as GPIO normal

[chudat1204]

Hi, I have problem.when i config GPIO14 as normal pin. I disabled GPIO14 work as PWM3 in device tree. But i don’t know gpio number in /sys/kernel/debug/gpio. Can you help me point numberpin of GPIO14 in /sys/kernel/debug/gpio?
Thanks

[KevinFFF]

Hi chudat1204,

Are you using the devkit or custom board for Orin NX?
What’s your Jetpack version in use?

Please share the result of the following command on your board.

$ cat /sys/kernel/debug/gpio |grep PX.03

[chudat1204]

@KevinFFF

cat /sys/kernel/debug/gpio |grep PX.03

i am was using custom board for Orin-nx with jetpack 5.1.3. Here is the results when i type cmd “cat /sys/kernel/debug/gpio |grep PX.03”.
Thanks!

[KevinFFF]

If you want to use above pin(GPIO14) as GPIO, you can just use gpio-465 since PX.03 pinmux as I show you above.
In JP5.1.3, you can simply run the following command to export and control it through sysfs

# export 465 > /sys/class/gpio/export
# cat /sys/class/gpio/PX.03/direction
# cat /sys/class/gpio/PX.03/value

[chudat1204]

@KevinFFF

PX.03

Thank you, but i wanna know a way that you can search gpio-465 map with pin(GPIO14).
Thanks !

[KevinFFF]

You can search it from pinmux spreadsheet as the screenshot I shared with you.

1. Find the pin you want to control: GPIO14
2. check which GPIO pin is pinmux with this pin: PX.03
3. run cat /sys/kernel/debug/gpioto check GPIO number: 465

[chudat1204]

Oke, i find this. Thank you!!!