Configuring and connecting the Mali-G52

Our example SoC benefits from the inclusion of a Mali-G52 graphics processor. This GPU is based on the Bifrost architecture and is designed to bring premium visual experiences to mainstream mobile devices. In addition, the Mali-G52 has a significant Machine Learning capability.

Configuration

In this SoC, the Mali-G52 has been configured to have six cores. This number of cores provides high performance when using the Mali-G52 for Machine Learning tasks.

You can choose to have one, two, three, four, or six cores in a Mali-G52. The choice of core affects the size options that are available for the L2 cache. For example, a two-core Mali-G52 GPU has the option of either a 128KB cache or a 256KB cache. Three, four, and six-core Mali-G52 clusters have the option of having two 256K L2 caches. For our SoC, we chose two 256K L2 caches for the Cortex-G52 cluster. 

Connections

Each Mali-G52 includes the interfaces that are shown in the following table:

Interface Description 
 ACE master  A Mali-G52 with L2 caches has two ACE master interfaces. In this SoC, these two interfaces connect to the CCI-500. These interfaces allow the GPU to access internal and external memory in the system.
 AXI4 slave A Mali-G52 has an AXI slave interface. In this SoC, this interface connects to the NIC-400. The interface provides access to the control and status registers for the GPU driver running on the CPU. The driver uses the GPU control registers to configure the graphics system to start and control multiple concurrent jobs running on the GPU. 
 Interrupt A Mali-G52 can send interrupt requests. These requests are usually made to signal that a graphics job is complete, but also whenever a graphics job fails. In this SoC, the interrupt line connects to the GIC-500, which distributes them to the Cortex-A53 cores, so they can act on them.  
 Q-Channel A Mali-G52 cluster has a Q-Channel port. This port allows a clock controller to query the GPU about whether the clock domain containing the GPU can be shut down.
Previous Next