Unable to change OC limit on NX 8/16GB boards

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin NX
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I read on Jetson Orin Nano Series, Jetson Orin NX Series and Jetson AGX Orin Series — NVIDIA Jetson Linux Developer Guide 1 documentation that the default 2A current limit of the NX boards can be manually written with command

sudo echo <current> > /sys/bus/i2c/drivers/ina3221/1-0040/hwmon/hwmon<x>/curr1_max
sudo echo <current> > /sys/bus/i2c/drivers/ina3221/1-0040/hwmon/hwmon<x>/curr1_crit

I can execute the above command without returning errors, and the changed curr1_max value is also reflected in jtop. However, the hardware is still capped to 2A despite the value being changed. What else should one do to raise the current limit of the Orin NX 8/16GB boards?

At the moment, both the 8GB and 16GB boards are capped at12V2A. The custom carrier board supports supplying 12V6A continuously. I am using stress and gpu-burn for synthetic loads. I tried to change both curr1_max and curr1_crit to values between 2500 and 10000 with no success. The tests were conducted using MAXN_SUPER nvpmodel configuration. I tried exporting a maxed out nvpmodel config using PowerEstimator but that didn’t help with the issue.

Additionally, I would appreciate some clarification on the actual achievable power under MAXN_SUPER, v.s. the datasheet stated TDP, for the NX 8GB/16GB boards.
Is it that no software configuration would allow these boards to go beyond the datasheet TDP, not even MAXN profiles? I am discussing in terms of sustained loads ( T > 5mins ).

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Additionally, I would like to ask how one might determine if the current Jetpack is flashed with the super configuration.
The board is running a customized Jetpack image through PXE, and it’s not obvious whether the super configuration is properly configured in the boot image. Is there any post boot check that can confirm if Jetpack is running with maxn_super profile capabilities?
Thank you.

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Hi,

Actually Orin NX/Nano super OC limit is already the maximum that could not be adjusted anymore.

This thing should not be configured anymore. You should not run a stress test under maxN mode either. That would highly possible hit the OC throttling.

At the moment, both the 8GB and 16GB boards are capped at12V2A.
12V 2A is approx. 25W, which is the limit for non-super.

What I feel here is your didn’t flash the super config to the board.

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