Tegra234-cpufreq-pair-cooling.dtsi

Autonomous Machines Jetson & Embedded Systems Jetson Orin NX
1

Could somebody please explain why:

a) tegra234-p3767-0000-p3768-0000-a0.dts has tegra234-thermal-cooling.dtsi

… meanwhile …

b) tegra234-p3767-0001-p3768-0000-a0.dts has tegra234-cpufreq-pair-cooling.dtsi

What does tegra234-cpufreq-pair-cooling.dtsi do? This looks like a new addition to R35.4.1. Why is it applied for P3767-0001 (Orin NX 8GB) but not P3767-0000 (Orin NX 16GB)? Should it apply to both?

Thanks!

3

tegra234-cpufreq-pair-cooling.dtsi seems to be applied to the module specific with 6 cores CPU so that it is not needed for Orin NX 16GB (tegra234-p3767-0000-p3768-0000-a0.dts).

4

Thank you for the explanation, that’s all clear! So just to double confirm, 16GB vs. 8GB would need a different .dts to be flashed because of the difference in the number of CPU cores?

5

Yes, tegra234-cpufreq-pair-cooling.dtsi is used to confirm all cores running on the same frequency for 6 cores only.

Every SKU may use different .dts file, you could refer to board config and know which dts is included.

7

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