Embedded controller with an internal timer
AssigneeHewlwtt-Packard Development Company, L.P.
InventorsDallas M Barlow, Jon G Lloyd
Life of this patent
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Abstract
Example embodiments disclosed herein relate to a computing system including a controller hub to control system sleep states, and an embedded controller including an internal timer. The embedded controller is to remove power from the controller hub when the system enters a sleep state and to enable power to the controller hub prior to the system wake time. The internal timer is to determine when to enable power to the controller hub. Example methods and machine-readable storage media are also disclosed.
Claims18
A computing system comprising:
- a controller hub to control system sleep states;
- a real time clock (RTC) included in the controller hub to determine system wake time;
- and
- an embedded controller including an internal timer, the embedded controller to:
- remove power from the controller hub when the system enters a sleep state;
- and
- enable power to the controller hub prior to the system wake time,
- wherein the internal timer determines when to enable power to the controller hub.
A method comprising:
- receiving, at an embedded controller, a representation of a length of time until the embedded controller enables power to a controller hub, wherein expiration of the length of time is prior to a system wake time indicated by a real time clock (RTC) included in the controller hub;
- disabling power to the controller hub, responsive to the system entering a sleep state;
- tracking the length of time via an internal timer of the embedded controller;
- and
- enabling power to the controller hub, responsive to expiration of the length of time.
A non-transitory computer-readable medium comprising instructions that, when executed by an embedded controller, cause the embedded controller to:
- receive an indication of a length of time until the embedded controller is to enable power to a controller hub;
- remove power from the controller hub, wherein the controller hub includes a real time clock (RTC);
- track the length of time via an internal timer;
- and
- enable power to the controller hub responsive to expiration of the length of time.
Dependencies are inferred from the claim text.