Intel's Xe DG1 dGPU will only work with select CPU and chipset combinations and will require a BIOS update in order to be recognized. Intel said that Coffee Lake-S and Comet Lake-S CPUs are supported on specific midrange and budget 300 and 400-series chipsets. This rules out any possibility of the GPU being compatible with AMD systems.
https://www.notebookcheck.net/Intel-Xe-DG1-only-meant-for-select-Coffee-Lake-S-and-Comet-Lake-S-CPU-and-chipset-combinations-will-not-work-with-AMD-processors.516976.0.html