Renesas provides the R-Car S4 SDK, software that runs on the R-Car S4 SoC.
This video, Part 3 of Sample Linux Application and Driver in the 'R-Car S4 Startup Guide' explains, 'Sample PCIe driver communication' as the following steps.
- Introduce connection of PCIe Test environment.
- Build PCIe driver as Root Complex and Endpoint.
- Test communication between Root Complex and Endpoint.