An example SoC includes a plurality of processing systems supporting respective Quality of Service (QoS) rules, channel circuitry that is configured to service communications for the plurality of processing systems and that includes a QoS manager. The QoS manager determines that a first processing system of the plurality of processing systems that operates according to first QoS rules desires to send a communication with a first QoS selection of the first QoS rules to a second processing system that operates according to second QoS rules, determines available communication receipt resources of the second processing system of the plurality of processing systems, the second processing system supporting second QoS rules, determines a communication resources allocation for the second processing system based upon the first QoS rules, the second QoS rules, and the first QoS selection, and directs the second processing system to operate according to the communication resource allocation.