Well there are possibilities here:
https://community.arm.com/arm-commu...ms-css-the-fastest-path-to-production-silicon
To support the development of specialized silicon and heterogeneous compute, Neoverse CSS N2 provides options for both on-die and externally attached accelerators or other devices. On-chip accelerators can be incorporated using Arm’s NI-700 packetized network-on-chip interconnect with interrupt and address translation support. For off-chip acceleration, CSS N2 supports combo PCIe Gen5/CXL1.1 PHYs, enabling attachment of GPUs, TPUs, DPUs and other high-speed devices. This includes support for CXL Type3 connections - useful for memory expansion, pooling and tiering use cases.