Documentation/devicetree/bindings/pci/altera-pcie.txt

   1 * Altera PCIe controller
   2
   3 Required properties:
   4 - compatible :  should contain "altr,pcie-root-port-1.0"
   5 - reg:          a list of physical base address and length for TXS and CRA.
   6 - reg-names:    must include the following entries:
   7                 "Txs": TX slave port region
   8                 "Cra": Control register access region
   9 - interrupt-parent:     interrupt source phandle.
  10 - interrupts:   specifies the interrupt source of the parent interrupt controller.
  11                 The format of the interrupt specifier depends on the parent interrupt
  12                 controller.
  13 - device_type:  must be "pci"
  14 - #address-cells:       set to <3>
  15 - #size-cells:  set to <2>
  16 - #interrupt-cells:     set to <1>
  17 - ranges:               describes the translation of addresses for root ports and standard
  18                 PCI regions.
  19 - interrupt-map-mask and interrupt-map: standard PCI properties to define the
  20                 mapping of the PCIe interface to interrupt numbers.
  21
  22 Optional properties:
  23 - msi-parent:   Link to the hardware entity that serves as the MSI controller for this PCIe
  24                 controller.
  25 - bus-range:    PCI bus numbers covered
  26
  27 Example
  28         pcie_0: pcie@0xc00000000 {
  29                 compatible = "altr,pcie-root-port-1.0";
  30                 reg = <0xc0000000 0x20000000>,
  31                         <0xff220000 0x00004000>;
  32                 reg-names = "Txs", "Cra";
  33                 interrupt-parent = <&hps_0_arm_gic_0>;
  34                 interrupts = <0 40 4>;
  35                 interrupt-controller;
  36                 #interrupt-cells = <1>;
  37                 bus-range = <0x0 0xFF>;
  38                 device_type = "pci";
  39                 msi-parent = <&msi_to_gic_gen_0>;
  40                 #address-cells = <3>;
  41                 #size-cells = <2>;
  42                 interrupt-map-mask = <0 0 0 7>;
  43                 interrupt-map = <0 0 0 1 &pcie_0 1>,
  44                                     <0 0 0 2 &pcie_0 2>,
  45                                     <0 0 0 3 &pcie_0 3>,
  46                                     <0 0 0 4 &pcie_0 4>;
  47                 ranges = <0x82000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x10000000
  48                             0x82000000 0x00000000 0x10000000 0xd0000000 0x00000000 0x10000000>;
  49         };