QUALCOMM Incorporated
COOPERATIVE DYNAMIC CLOCK AND VOLTAGE SCALING (DCVS) BETWEEN TWO PROCESSOR SYSTEMS

Abstract:

In a real-time system having first and second processor systems, cooperative dynamic clock and voltage scaling ("DCVS") may include a first processor system monitoring a condition indicative of first processor workload, adjusting a first processor operating frequency in response to a detected amount of change in the first processor workload, and providing an indication based on the detected amount of change in the first processor workload to the second processor contemporaneously with providing first processor output data to the second processor. The cooperative DCVS may further include the second processor system adjusting a second processor operating frequency in response to the indication.