| 摘要 |
A graphics processing system and power gating method thereof, the graphics processing system (100) comprising: a graphics processing unit (GPU) (130), a bus interface (110) and a power management unit (PMU) (120), the GPU comprising a control circuit (140) and a plurality of partitions (151-154); the method comprises: when the bus interface receives an external graphics command, utilizing the PMU to turn on a power supply of the control circuit (S210); subsequently utilizing the control circuit to turn on power supplies of one or more partitions of the plurality of partitions corresponding to the external graphics command (S220); when the control circuit detects any one of the plurality of partitions is in an idle state, utilizing the control circuit to turn off the power supply of the partition in the idle state (S230); when the bus interface detects the plurality of partitions are in a full idle state, utilizing the bus interface to turn off the power supply of the control circuit via the PMU (S240); and when the PMU turns off the power supply of the control circuit, the control circuit may also turn off the power supplies of the plurality of the partitions. |
