# How to change pinmux to 40 pin gpio?

**URL:** <https://forums.developer.nvidia.com/t/how-to-change-pinmux-to-40-pin-gpio/264167>\
**Category:** Jetson AGX Orin\
**Created:** [August 24, 2023, 7:33am UTC](https://forums.developer.nvidia.com/t/how-to-change-pinmux-to-40-pin-gpio/264167 "2023-08-24T07:33:22Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![2036063251](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@2036063251](https://forums.developer.nvidia.com/u/2036063251)\
**Post date:** [August 24, 2023, 7:33am UTC](https://forums.developer.nvidia.com/t/how-to-change-pinmux-to-40-pin-gpio/264167/1 "2023-08-24T07:33:22Z")

</div>

Hello, I need some help.  
I use the AGX ORIN development kit and try using 40PINS with 22PIN that named GPIO\_ 40PIN\_ LVS, IS A54 PIN ,PP.04,and I modified his PINMUX and regeneration pinmux and gpio dtsi file,and use flash.sh re-flash it.

 ![1692862051113](https://global.discourse-cdn.com/nvidia/original/4X/7/f/a/7faf62a6e2e071381c8cb3603ca239417d8ac157.png)  
using echo 444\>export to export it, using echo 1\>value, echo 0\>value, but the output level measurement did not change. What is the reason for this?

---

<div class="post-metadata">

**Author:** ![2036063251](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@2036063251](https://forums.developer.nvidia.com/u/2036063251)\
**Post date:** [August 24, 2023, 7:40am UTC](https://forums.developer.nvidia.com/t/how-to-change-pinmux-to-40-pin-gpio/264167/2 "2023-08-24T07:40:26Z")

</div>

also I used echo out \> direction

---

<div class="post-metadata">

**Author:** ![KevinFFF](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/kevinfff/32/15508_2.png) [@KevinFFF](https://forums.developer.nvidia.com/u/KevinFFF)\
**Post date:** [August 28, 2023, 3:06am UTC](https://forums.developer.nvidia.com/t/how-to-change-pinmux-to-40-pin-gpio/264167/4 "2023-08-28T03:06:35Z")

</div>

Hi 2036063251,

What’s your Jetpack version in use?

If you want `PP.04` default **Output/High** , you could configure it to **Drive 1** in pinmux spreadsheet.

Have you confirmed the generated dtsi moving to the correct directory and you modify the `PINMUX_CONFIG` and `PMC_CONFIG` in your board config?  
You could check the full flash log to confirm if they have been used.

---

<div class="post-metadata">

**Author:** ![system](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/system/32/68080_2.png) [@system](https://forums.developer.nvidia.com/u/system)\
**Post date:** [September 26, 2023, 3:25am UTC](https://forums.developer.nvidia.com/t/how-to-change-pinmux-to-40-pin-gpio/264167/6 "2023-09-26T03:25:58Z")

</div>

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.