xref: /freebsd/sys/contrib/device-tree/Bindings/pci/intel-gw-pcie.yaml (revision b197d4b893974c9eb4d7b38704c6d5c486235d6f) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pci/intel-gw-pcie.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: PCIe RC controller on Intel Gateway SoCs
8
9maintainers:
10  - Rahul Tanwar <rtanwar@maxlinear.com>
11
12select:
13  properties:
14    compatible:
15      contains:
16        const: intel,lgm-pcie
17  required:
18    - compatible
19
20allOf:
21  - $ref: /schemas/pci/snps,dw-pcie.yaml#
22
23properties:
24  compatible:
25    items:
26      - const: intel,lgm-pcie
27      - const: snps,dw-pcie
28
29  reg:
30    items:
31      - description: Controller control and status registers.
32      - description: PCIe configuration registers.
33      - description: Controller application registers.
34
35  reg-names:
36    items:
37      - const: dbi
38      - const: config
39      - const: app
40
41  ranges:
42    maxItems: 1
43
44  resets:
45    maxItems: 1
46
47  clocks:
48    maxItems: 1
49
50  phys:
51    maxItems: 1
52
53  phy-names:
54    const: pcie
55
56  reset-gpios:
57    maxItems: 1
58
59  num-lanes:
60    maximum: 2
61
62  max-link-speed:
63    enum: [1, 2, 3, 4]
64    default: 1
65
66  reset-assert-ms:
67    description: |
68      Delay after asserting reset to the PCIe device.
69    maximum: 500
70    default: 100
71
72required:
73  - compatible
74  - reg
75  - reg-names
76  - ranges
77  - resets
78  - clocks
79  - phys
80  - phy-names
81  - reset-gpios
82  - '#interrupt-cells'
83  - interrupt-map
84  - interrupt-map-mask
85
86unevaluatedProperties: false
87
88examples:
89  - |
90    #include <dt-bindings/gpio/gpio.h>
91    pcie10: pcie@d0e00000 {
92      compatible = "intel,lgm-pcie", "snps,dw-pcie";
93      device_type = "pci";
94      #address-cells = <3>;
95      #size-cells = <2>;
96      reg = <0xd0e00000 0x1000>,
97            <0xd2000000 0x800000>,
98            <0xd0a41000 0x1000>;
99      reg-names = "dbi", "config", "app";
100      linux,pci-domain = <0>;
101      max-link-speed = <4>;
102      bus-range = <0x00 0x08>;
103      #interrupt-cells = <1>;
104      interrupt-map-mask = <0 0 0 0x7>;
105      interrupt-map = <0 0 0 1 &ioapic1 27 1>,
106                      <0 0 0 2 &ioapic1 28 1>,
107                      <0 0 0 3 &ioapic1 29 1>,
108                      <0 0 0 4 &ioapic1 30 1>;
109      ranges = <0x02000000 0 0xd4000000 0xd4000000 0 0x04000000>;
110      resets = <&rcu0 0x50 0>;
111      clocks = <&cgu0 120>;
112      phys = <&cb0phy0>;
113      phy-names = "pcie";
114      reset-assert-ms = <500>;
115      reset-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
116      num-lanes = <2>;
117    };
118