Reducing Power Consumption Apalis iMX6 Quad Running Linux

Technical Support
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1

Hello,

I would like to reduce the power consumption on the Apalis iMX6 Module.
Actually I’ve done some measurements about the power consuption. I see no big differences (just a few mA) between 1 Core at 100% load and 4 Cores at 100% by executing the following command 4 times

  cat /dev/urandom > /dev/null&

In the datasheet the power of each core is shown, why the current of each core is listed when there is “no” different between 1 Core 100% and 4 Cores 100%?

Datasheet Apalis iMX6 Table 8-3

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Are there any possibility to reduce the power i.e. deactivating some cores or other things

Thanks

2

In the datasheet the power of each core is shown, why the current of each core is listed when there is “no” different between 1 Core 100% and 4 Cores 100%?

Then most possibly your test setup is bogus. We usually use the stress utility to measure the same.

Are there any possibility to reduce the power i.e. deactivating some cores or other things

Yes, you may e.g. limit the CPU frequency as explained in the following article on our developer website. You may further completely disable any subsystems you do not need e.g. by setting their node status in the device tree to disabled.