xref: /linux/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml (revision a1ff5a7d78a036d6c2178ee5acd6ba4946243800) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pci/microchip,pcie-host.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Microchip PCIe Root Port Bridge Controller
8
9maintainers:
10  - Daire McNamara <daire.mcnamara@microchip.com>
11
12allOf:
13  - $ref: plda,xpressrich3-axi-common.yaml#
14  - $ref: /schemas/interrupt-controller/msi-controller.yaml#
15
16properties:
17  compatible:
18    const: microchip,pcie-host-1.0 # PolarFire
19
20  clocks:
21    description:
22      Fabric Interface Controllers, FICs, are the interface between the FPGA
23      fabric and the core complex on PolarFire SoC. The FICs require two clocks,
24      one from each side of the interface. The "FIC clocks" described by this
25      property are on the core complex side & communication through a FIC is not
26      possible unless it's corresponding clock is enabled. A clock must be
27      enabled for each of the interfaces the root port is connected through.
28      This could in theory be all 4 interfaces, one interface or any combination
29      in between.
30    minItems: 1
31    items:
32      - description: FIC0's clock
33      - description: FIC1's clock
34      - description: FIC2's clock
35      - description: FIC3's clock
36
37  clock-names:
38    description:
39      As any FIC connection combination is possible, the names should match the
40      order in the clocks property and take the form "ficN" where N is a number
41      0-3
42    minItems: 1
43    maxItems: 4
44    items:
45      pattern: '^fic[0-3]$'
46
47  ranges:
48    minItems: 1
49    maxItems: 3
50
51  dma-ranges:
52    minItems: 1
53    maxItems: 6
54
55unevaluatedProperties: false
56
57examples:
58  - |
59    soc {
60            #address-cells = <2>;
61            #size-cells = <2>;
62            pcie0: pcie@2030000000 {
63                    compatible = "microchip,pcie-host-1.0";
64                    reg = <0x0 0x70000000 0x0 0x08000000>,
65                          <0x0 0x43000000 0x0 0x00010000>;
66                    reg-names = "cfg", "apb";
67                    device_type = "pci";
68                    #address-cells = <3>;
69                    #size-cells = <2>;
70                    #interrupt-cells = <1>;
71                    interrupts = <119>;
72                    interrupt-map-mask = <0x0 0x0 0x0 0x7>;
73                    interrupt-map = <0 0 0 1 &pcie_intc0 0>,
74                                    <0 0 0 2 &pcie_intc0 1>,
75                                    <0 0 0 3 &pcie_intc0 2>,
76                                    <0 0 0 4 &pcie_intc0 3>;
77                    interrupt-parent = <&plic0>;
78                    msi-parent = <&pcie0>;
79                    msi-controller;
80                    bus-range = <0x00 0x7f>;
81                    ranges = <0x03000000 0x0 0x78000000 0x0 0x78000000 0x0 0x04000000>;
82                    pcie_intc0: interrupt-controller {
83                        #address-cells = <0>;
84                        #interrupt-cells = <1>;
85                        interrupt-controller;
86                    };
87            };
88    };
89