Method, apparatus, and system for improving resume times for root ports and root port integrated endpoints

A serial point-to-point link interface to enable communication between a processor and a device, the high speed serial point-to-point link interface including a transmitter to transmit serial data, a receiver to deserialize serial data, and control logic to implement a protocol stack. The protocol stack supports a plurality of power management states, including an active state, a first off state, in which a supply voltage is maintained, and a second off state, in which the supply voltage is not to be provided to the device. The protocol stack provides a default recovery time to allow the device to begin a transition from the first off state to the active state prior to accessing the device. The protocol stack further provides for accessing the device prior to expiration of the default recovery time to complete the transition based on a device-advertised recovery time.