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Methods and systems for power management in a data processing system

  • US 7,917,784 B2
  • Filed: 01/07/2007
  • Issued: 03/29/2011
  • Est. Priority Date: 01/07/2007
  • Status: Active Grant
First Claim
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1. A machine implemented method comprising:

  • scheduling a future action for a subsystem of a data processing system, the subsystem having an associated setup time, the future action being scheduled by determining a future time value for the future action to be performed by the subsystem based on a list of time-related events associated with the subsystem, the list of time-related events comprising future actions and time values at which the future actions are to be performed;

    adjusting, at a run-time, the future time value by a latency value which represents a latency in powering up the subsystem from a reduced power state, wherein the latency value is based on the associated setup time of the subsystem for which the future action is scheduled; and

    supplying power to the subsystem to be powered up in response to the adjusted future time value.

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