公开(公告)号：US11816491B2

公开(公告)日：2023-11-14

申请号：US17375911

申请日：2021-07-14

Applicant: Dell Products L.P.

Inventor： William D. Leara ,  Chien-Yi Juan ,  Rong-Yu Wang ,  Jui-Hsing Chiu

IPC: G06F9/4401 ,  G06F13/42

CPC classification number: G06F9/4411 ,  G06F13/4282 ,  G06F2213/0042

Abstract: A method for configuring a peripheral bus of an information handling system performs, as part of a boot sequence, an initial configuration of a chipset setting pertaining to the bus based on a descriptor stored in a nonvolatile storage resource. After an operating system is loaded, a controller detects a peripheral device connecting to the bus and responds by performing a runtime configuration of the chipset setting based on capability information obtained from the peripheral device. The peripheral bus may comprise a USB pipe and a USB-C type connector, wherein the peripheral device is detected by a USB power delivery (PD) controller based on configuration channel (CC) pins of the USB-C connector. The PD controller may signal the chipset and send the device’s capability information to the chipset. The PD controller may assert a PMCALERT# signal of the chipset’s and send the capability information via a system management link (SMLink1).