Kernel-4.18.0-80.el8_cdns,cdns-pcie-host

• Cadence PCIe host controller

This PCIe controller inherits the base properties defined in
host-generic-pci.txt.

Required properties:

• compatible: Should contain “cdns,cdns-pcie-host” to identify the IP used.
• reg: Should contain the controller register base address, PCIe configuration
  window base address, and AXI interface region base address respectively.
• reg-names: Must be “reg”, “cfg” and “mem” respectively.
• #address-cells: Set to <3>
• #size-cells: Set to <2>
• device_type: Set to “pci”
• ranges: Ranges for the PCI memory and I/O regions
• #interrupt-cells: Set to <1>
• interrupt-map-mask and interrupt-map: Standard PCI properties to define the
  mapping of the PCIe interface to interrupt numbers.

Optional properties:

• cdns,max-outbound-regions: Set to maximum number of outbound regions
  (default 32)
• cdns,no-bar-match-nbits: Set into the no BAR match register to configure the
  number of least significant bits kept during inbound (PCIe -> AXI) address
  translations (default 32)
• vendor-id: The PCI vendor ID (16 bits, default is design dependent)
• device-id: The PCI device ID (16 bits, default is design dependent)

Example:

pcie@fb000000 {
compatible = “cdns,cdns-pcie-host”;
device_type = “pci”;
#address-cells = <3>;
#size-cells = <2>;
bus-range = <0x0 0xff>;
linux,pci-domain = <0>;
cdns,max-outbound-regions = <16>;
cdns,no-bar-match-nbits = <32>;
vendor-id = /bits/ 16 <0x17cd>;
device-id = /bits/ 16 <0x0200>;

reg = <0x0 0xfb000000  0x0 0x01000000>,
      <0x0 0x41000000  0x0 0x00001000>,
      <0x0 0x40000000  0x0 0x04000000>;
reg-names = "reg", "cfg", "mem";

ranges = <0x02000000 0x0 0x42000000  0x0 0x42000000  0x0 0x1000000>,
     <0x01000000 0x0 0x43000000  0x0 0x43000000  0x0 0x0010000>;

#interrupt-cells = <0x1>;

interrupt-map = <0x0 0x0 0x0  0x1  &gic  0x0 0x0 0x0 14 0x1
         0x0 0x0 0x0  0x2  &gic  0x0 0x0 0x0 15 0x1
         0x0 0x0 0x0  0x3  &gic  0x0 0x0 0x0 16 0x1
         0x0 0x0 0x0  0x4  &gic  0x0 0x0 0x0 17 0x1>;

interrupt-map-mask = <0x0 0x0 0x0  0x7>;

msi-parent = <&its_pci>;

};