1. A method for controlling display of a sink device, the sink device having a plurality of tiles forming a display and being connected to a source device via a plurality of interfaces, each interface providing a video stream to a respective one of the plurality of tiles, the source device comprising: a policy engine; and a GPU (graphics processing unit) having a driver, the method comprising: obtaining, by the policy engine, synchronous link training data provided by the driver of the GPU, the synchronous link training data including information regarding a negotiated link configuration for the plurality of interfaces; generating, by the policy engine, configuration data based at least in part on the synchronous link training data, the configuration data including a first set of configurations, each configuration of the set being associated with a resolution of the display; providing, by the policy engine, the first set of configurations to the driver of the GPU; requesting, by the policy engine, the driver of the GPU to validate each entry of the first set of configurations; generating, by the policy engine, a second set of configurations that include one or more validated configuration entries of the first set that have been validated by the GPU; providing the second set of configurations including the one or more validated configuration entries to an upper layer application; and providing, by the policy engine, driving data to the driver of the GPU for driving the display, the driving data being derived by mapping a specified resolution to a configuration implementation on the plurality of interfaces based on the synchronous link training data and the configuration data.