"isolcpus=" to enable offline cores Orin NX

[redeexpressos]

Hi, on Jetson TX2 I was able to enable the offline/denver cores by adding isolcpus= to /boot/extlinux/extlinux.conf. From what I understand, Orin does not use grub-efi, so this solution is not doable.

Ive tried the APPEND += " isolcpus=" yocto option, still no success.

What would be the correct way?

[kekiefer]

Refer to the Jetson developer guide for this kind of guidance. You will use nvpmodel to change the online CPU count, among other power-related features. See the section "Supported Modes and Power Efficiency" here: https://docs.nvidia.com/jetson/archives/r35.5.0/DeveloperGuide/SD/PlatformPowerAndPerformance/JetsonOrinNanoSeriesJetsonOrinNxSeriesAndJetsonAgxOrinSeries.html?highlight=nvpmodel#supported-modes-and-power-efficiency