Broadcom Brcmstb PCIe host controller

modulename: pcie-brcmstb.ko

configname: CONFIG_PCIE_BRCMSTB

Linux Kernel Configuration
└─>Device Drivers
└─>PCI support
└─>PCI controller drivers
└─>Broadcom Brcmstb PCIe host controller
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Say Y here to enable PCIe host controller support for
Broadcom STB based SoCs, like the Raspberry Pi 4.

source code:
drivers/pci/controller/pcie-brcmstb.c