Method for dynamic arbitration of real-time streams in the multi-client systems

A data processing system, comprising:

• a power management state machine;
• a power manager coupled to the power management state machine for receiving a power event request;
• a plurality of real-time clients coupled to the power management state machine and to the power manager for receiving a depth of a power event, wherein the depth of the power event corresponds to an amount of time the power event will last, and adapted to:
• dynamically configure a bandwidth of a watermark register in correspondence to the depth of the power event;
• compare a number of entries in a client buffer associated with the watermark register to a value of the watermark register;
• determine if the power event request is an allowable request;
• and
• in response to determining the power event request is an allowable request, assert an allow signal to enable commencement of the power event.

A method for dynamically managing clients during real-time power events for shared resources, the method comprising:

• receiving a power event request;
• determining a watermark threshold for each client associated with the power event request;
• for each client, comparing a number of entries in a client buffer to a respective watermark threshold;
• detecting at least one of an allowance signal and a non-allowance signal in response to the comparing for each client;
• in response to detecting an allowance signal from each client associated with the power event request, enabling a power event to commence;
• and
• in response to detecting at least one non-allowance signal from at least one client associated with the power event request, disabling the power event from commencing.