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CONFIG_PM_RUNTIME: Run-time PM core functionality

General informations

The Linux kernel configuration item CONFIG_PM_RUNTIME:

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Enable functionality allowing I/O devices to be put into energy-saving (low power) states at run time (or autosuspended) after a specified period of inactivity and woken up in response to a hardware-generated wake-up event or a driver's request.

Hardware support is generally required for this functionality to work and the bus type drivers of the buses the devices are on are responsible for the actual handling of the autosuspend requests and wake-up events.

Hardware

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