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-rw-r--r--Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt60
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diff --git a/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt
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1* Cadence PCIe host controller
2
3This PCIe controller inherits the base properties defined in
4host-generic-pci.txt.
5
6Required properties:
7- compatible: Should contain "cdns,cdns-pcie-host" to identify the IP used.
8- reg: Should contain the controller register base address, PCIe configuration
9 window base address, and AXI interface region base address respectively.
10- reg-names: Must be "reg", "cfg" and "mem" respectively.
11- #address-cells: Set to <3>
12- #size-cells: Set to <2>
13- device_type: Set to "pci"
14- ranges: Ranges for the PCI memory and I/O regions
15- #interrupt-cells: Set to <1>
16- interrupt-map-mask and interrupt-map: Standard PCI properties to define the
17 mapping of the PCIe interface to interrupt numbers.
18
19Optional properties:
20- cdns,max-outbound-regions: Set to maximum number of outbound regions
21 (default 32)
22- cdns,no-bar-match-nbits: Set into the no BAR match register to configure the
23 number of least significant bits kept during inbound (PCIe -> AXI) address
24 translations (default 32)
25- vendor-id: The PCI vendor ID (16 bits, default is design dependent)
26- device-id: The PCI device ID (16 bits, default is design dependent)
27
28Example:
29
30pcie@fb000000 {
31 compatible = "cdns,cdns-pcie-host";
32 device_type = "pci";
33 #address-cells = <3>;
34 #size-cells = <2>;
35 bus-range = <0x0 0xff>;
36 linux,pci-domain = <0>;
37 cdns,max-outbound-regions = <16>;
38 cdns,no-bar-match-nbits = <32>;
39 vendor-id = /bits/ 16 <0x17cd>;
40 device-id = /bits/ 16 <0x0200>;
41
42 reg = <0x0 0xfb000000 0x0 0x01000000>,
43 <0x0 0x41000000 0x0 0x00001000>,
44 <0x0 0x40000000 0x0 0x04000000>;
45 reg-names = "reg", "cfg", "mem";
46
47 ranges = <0x02000000 0x0 0x42000000 0x0 0x42000000 0x0 0x1000000>,
48 <0x01000000 0x0 0x43000000 0x0 0x43000000 0x0 0x0010000>;
49
50 #interrupt-cells = <0x1>;
51
52 interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0x0 0x0 14 0x1
53 0x0 0x0 0x0 0x2 &gic 0x0 0x0 0x0 15 0x1
54 0x0 0x0 0x0 0x3 &gic 0x0 0x0 0x0 16 0x1
55 0x0 0x0 0x0 0x4 &gic 0x0 0x0 0x0 17 0x1>;
56
57 interrupt-map-mask = <0x0 0x0 0x0 0x7>;
58
59 msi-parent = <&its_pci>;
60};