Platform bus based DesignWare PCIe controller (host mode)

configname: CONFIG_PCIE_DW_PLAT_HOST

Linux Kernel Configuration
└─>Device Drivers
└─>PCI support
└─>PCI controller drivers
└─>DesignWare-based PCIe controllers
└─>Platform bus based DesignWare PCIe controller (host mode)
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Enables support for the PCIe controller in the Designware IP to
work in host mode. There are two instances of PCIe controller in
Designware IP.
This controller can work either as EP or RC. In order to enable
host-specific features PCIE_DW_PLAT_HOST must be selected and in
order to enable device-specific features PCI_DW_PLAT_EP must be
selected.