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I am using a buildroot image (3.12 kernel) running on my raspberry Pi with a USB LED light connected to it and I want to control on/off through the CLI.

I went through this. However, there is no control or level file in the power folder.

Is there any kernel configuration that I have to enable to get this ?

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vpillai
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    It might not even be possible if the USB power pins are connected directly to the 5V power rails (which I think is the case for RPis). – tangrs Jan 31 '14 at 13:29
  • @tangrs sadly I figured out that it is the truth :( – vpillai Feb 04 '14 at 05:59

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Found the answer to this. I have to enable PM_SUSPEND in the kernel configuration to get the class files. But then, as mentioned in the comments, RaspberryPi has the power lines directly connected to the power rails

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