Understanding Orin NX OC and Throttling Limits

[vb2000]

Hello,

I am curious how the Orin NX’s current limits and OC events are setup.

I have an Orin NX running Jetpack 5.1.2, and it’s max “stable” (Non-MAXN) power mode is 20W.

Within it, I have seen OC2 and OC3 throttling events when stressing the system (High CPU + GPU loading).

• 1 question I have is, are those OC2 and OC3 events directly related to any of the curr1/2/3 crit/max limits set in /sys/bus/i2c/drivers/ina3221/1-0040/hwmon/?

With the new jetpack 6.1.2 release “Super Mode” was introduced with 40W mode.

In it, the limits in /sys/bus/i2c/drivers/ina3221/1-0040/hwmon/ seem to have changed to be higher.

• My second question is if this indicates it is possible to push the limits higher in Jetpack 5.1.2 , or if there are some critical changes in the kernel to super mode that allow for these higher limits?

I don’t want to increase clock frequencies yet, just reduce the probability of OC2 and OC3 events.

I understand previous guidance was to not change the ina3221 max/crit values, but I am curious what changes in 6.1.2 allowed them to grow higher.

Thanks!

[WayneWWW]

Please just follow the original value. We don’t suggest you to change the value in it in improper BSP version.

[vb2000]

Hi @WayneWWW ,

Thanks for your reply.

I understand the guidance, but am still curious on what the class of changes were that allowed for this significant increase in power consumption?

Are there configuration files in the new release for BSP/BPMP that I can look at to compare across releases?

Thanks

[DaneLLL]

Hi,
Please check the information in
More information about how Jetpack 6.2 is allowing higher system power? - #6 by DaneLLL