公开(公告)号：US20150161070A1

公开(公告)日：2015-06-11

申请号：US14155319

申请日：2014-01-14

Applicant: Qualcomm Incorporated

Inventor： CRISTIAN DUROIU ,  STEVEN S. THOMSON

IPC: G06F13/42

CPC classification number: G06F13/42 ,  G06F3/00 ,  G06F9/46 ,  G06F9/5011

Abstract: A method and system for managing bandwidth demand for a variable bandwidth processing element in a portable computing device (“PCD”) includes monitoring bandwidth requests of a plurality of constant bandwidth processing elements and monitoring bandwidth requests of a variable bandwidth processing element. The variable bandwidth processing element may be either a graphics processing unit (GPU) or a central processing unit (CPU). The method may include determining if the variable bandwidth processing element needs adjustment to its bandwidth for a bus. Next, a message may be communicated to an aggregate bus driver indicating a level of adjustment for the variable bandwidth processing element. Based on the minimum frequency set for the entire PCD and the level of adjustment for the variable bandwidth processing element, the aggregate bus driver may set a new bandwidth value for the predetermined threshold of the bandwidth limiter for the variable bandwidth processing element.

Abstract translation: 用于管理便携式计算设备（“PCD”）中的可变带宽处理元件的带宽需求的方法和系统包括监视多个恒定带宽处理元件的带宽请求并监视可变带宽处理元件的带宽请求。 可变带宽处理元件可以是图形处理单元（GPU）或中央处理单元（CPU）。 该方法可以包括确定可变带宽处理元件是否需要调整其对于总线的带宽。 接下来，可以向指示可变带宽处理元件的调整级别的汇总总线驱动器传送消息。 基于为整个PCD设置的最小频率和可变带宽处理元件的调整电平，总线总线驱动器可以为可变带宽处理元件的带宽限制器的预定阈值设置新的带宽值。