METHOD TO ENHANCE DEVICE POLICY MANAGEMENT (DPM) POWER SHARING FOR USB TYPE-C (USB-C) ONLY DEVICES

摘要

A method and system for managing power for Universal Serial Bus (USB) ports, in particular USB Type-C ports that are connected to USB devices that do not support USB power delivery (USB PD). The method and system present an advertisement of a default power supply to a USB device, receive power attribute information from a USB device configuration descriptor during USB device enumeration, in response to the connecting USB device not supporting USB power deliver (USB PD), and dynamically change the power supply to meet the power requirements of the connecting USB device identified by the power attribute information.