Systems, methods, and devices for providing power to devices through connectors

1. A method comprising:

providing power from a host to a device using a connector, wherein the connector is configured to carry a first communication channel, and a second communication channel;

communicating, using the first communication channel, between the host and a device function of the device;

assigning a power allocation to the device, wherein the power allocation comprises a first amount of power;

receiving, by the host, from the device, using the second communication channel, a request for a second amount of power, wherein the request for the second amount of power is caused by the device;

determining, by the host, an amount of surplus power available from one or more power sources; and

sending, from the host, to the device, using the second communication channel, based on the request for the second amount of power, an offer for a third amount of power based, at least in part, on the amount of surplus power.

2. The method of claim 1 , further comprising:

accepting, by the device, the offer for the third amount of power.

3. The method of claim 1 , further comprising negotiating, by the host and the device, the first amount of power.

4. The method of claim 2 , further comprising:

modifying at least a portion of the power allocation based on the third amount of power.

5. The method of claim 1 , wherein the device comprises a first device, and the connector comprises a first connector, the method further comprising reallocating at least a portion of the power allocation to a second device coupled to the one or more power sources using a second connector.

6. The method of claim 1 , wherein the power allocation is allocated to the device for an operation.

7. The method of claim 6 , further comprising:

determining a status of the operation; and

modifying the power allocation based on the determining the status of the operation.

8. The method of claim 6 , wherein the status of the operation is determined, at least in part, by the device.

9. The method of claim 6 , wherein the status of the operation is determined, at least in part, by the host.

10. The method of claim 1 , further comprising adjusting the power allocation based on the power consumption of the device.

11. The method of claim 1 , wherein the device comprises a first device, the connector comprises a first connector, and the power allocation comprises a first power allocation, the method further comprising:

coupling a second device to the host using a second connector arranged to provide power to the second device from one or more power sources; and

allocating a second power allocation to the second device.

12. The method of claim 1 , wherein the first amount of power comprises a baseline portion based on a baseline power of the device.

13. The method of claim 12 , further comprising adjusting the baseline portion of the power allocation.

14. The method of claim 12 , wherein the third amount of power comprises a boost portion based, at least in part, on the amount of surplus power available from the one or more power sources.

15. The method of claim 14 , further comprising adjusting the power allocation based on the boost portion of the third amount of power.

16. A system comprising:

a connector capable of being connected to a device to provide power to the device from one or more power sources, wherein the connector is configured to carry a first communication channel, and a second communication channel; and

a host controller configured to:

allocate a power allocation to the device, wherein the power allocation comprises a first amount of power, wherein the;

receive, from the device, using the second communication channel, a request for a second amount of power, wherein the-request for the second amount of power is caused by the device;

determine an amount of surplus power available from one or more power sources; and

send, to the device, using the second communication channel, based on the request for the second amount of power, an offer for a third amount of power based, at least in part, on the amount of surplus power.

17. The system of claim 16 , wherein the first amount of power comprises a baseline amount of power.

18. The system of claim 17 , wherein the baseline amount of power is determined, at least in part, by a type of the connector.

19. The system of claim 17 , wherein the baseline amount of power is determined, at least in part, by one or more presence detect pins on the connector.

20. The system of claim 17 , wherein the baseline amount of power is determined, at least in part, by communicating with the device through the connector.

21. The system of claim 16 , wherein the host controller comprises a host central processing unit running an application.

22. The system of claim 16 , wherein the host controller comprises a service processor.

23. The system of claim 22 , wherein the service processor comprises a baseboard management controller.

24. A system comprising:

a first connector capable of being connected to a first device to provide power to the first device from one or more power sources, wherein the first connector is configured to carry a first communication channel and a second communication channel;

a second connector capable of being connected to a second device to provide power to the second device from the one or more power sources; and

a host controller configured to:

communicate, using the first connector and the first communication channel, with a device function of the first device;

allocate a first power allocation to the first device;

receive, from the first device, using the first connector and the second communication channel, a measurement of a power consumption of the first device; and

reallocate, based on the measurement, at least a portion of the first power allocation to the second device.