Renesas R-Car Gen4 PCIe controller (host mode)

configname: CONFIG_PCIE_RCAR_GEN4_HOST

Linux Kernel Configuration
└─>Device Drivers
└─>PCI support
└─>PCI controller drivers
└─>DesignWare-based PCIe controllers
└─>Renesas R-Car Gen4 PCIe controller (host mode)
In linux kernel since version 4.14.330 (release Date: 2023-11-20)  
Say Y here if you want PCIe controller (host mode) on R-Car Gen4 SoCs.
To compile this driver as a module, choose M here: the module will be
called pcie-rcar-gen4.ko. This uses the DesignWare core.