×

Device power management state transition latency advertisement for faster boot time

  • US 9,952,643 B2
  • Filed: 12/31/2015
  • Issued: 04/24/2018
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
Patent Images

1. A apparatus comprising:

  • a serial point-to-point link interface to enable communication between a processor and a device;

    wherein the serial point-to-point link interface implements a protocol stack and includes a transmitter to transmit serial data to the device and a receiver to deserialize a serial stream from the device;

    wherein the protocol stack is to support a plurality of power management states, including an active state, a first off state, in which one or more power rails are on, and a second off state, in which the one or more power rails are off;

    wherein the protocol stack is configured to provide a default wait time to allow the device to begin a transition from the second off state to the active state prior to access of the device; and

    wherein the protocol stack, in response to an indication the device is ready to enter the active state, is to access the device prior to expiration of the default wait time to complete the transition.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×