xref: /linux/Documentation/devicetree/bindings/pci/ti,j721e-pci-ep.yaml (revision 1c07425e902cd3137961c3d45b4271bf8a9b8eb9) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2# Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
3%YAML 1.2
4---
5$id: "http://devicetree.org/schemas/pci/ti,j721e-pci-ep.yaml#"
6$schema: "http://devicetree.org/meta-schemas/core.yaml#"
7
8title: TI J721E PCI EP (PCIe Wrapper)
9
10maintainers:
11  - Kishon Vijay Abraham I <kishon@ti.com>
12
13allOf:
14  - $ref: "cdns-pcie-ep.yaml#"
15
16properties:
17  compatible:
18    oneOf:
19      - const: ti,j721e-pcie-ep
20      - description: PCIe EP controller in AM64
21        items:
22          - const: ti,am64-pcie-ep
23          - const: ti,j721e-pcie-ep
24      - description: PCIe EP controller in J7200
25        items:
26          - const: ti,j7200-pcie-ep
27          - const: ti,j721e-pcie-ep
28
29  reg:
30    maxItems: 4
31
32  reg-names:
33    items:
34      - const: intd_cfg
35      - const: user_cfg
36      - const: reg
37      - const: mem
38
39  ti,syscon-pcie-ctrl:
40    $ref: /schemas/types.yaml#/definitions/phandle-array
41    items:
42      - items:
43          - description: Phandle to the SYSCON entry
44          - description: pcie_ctrl register offset within SYSCON
45    description: Specifier for configuring PCIe mode and link speed.
46
47  power-domains:
48    maxItems: 1
49
50  clocks:
51    maxItems: 1
52    description: clock-specifier to represent input to the PCIe
53
54  clock-names:
55    items:
56      - const: fck
57
58  dma-coherent:
59    description: Indicates that the PCIe IP block can ensure the coherency
60
61  interrupts:
62    maxItems: 1
63
64  interrupt-names:
65    items:
66      - const: link_state
67
68required:
69  - compatible
70  - reg
71  - reg-names
72  - ti,syscon-pcie-ctrl
73  - max-link-speed
74  - num-lanes
75  - power-domains
76  - clocks
77  - clock-names
78  - max-functions
79  - phys
80  - phy-names
81
82unevaluatedProperties: false
83
84examples:
85  - |
86    #include <dt-bindings/soc/ti,sci_pm_domain.h>
87
88    bus {
89        #address-cells = <2>;
90        #size-cells = <2>;
91
92        pcie0_ep: pcie-ep@d000000 {
93           compatible = "ti,j721e-pcie-ep";
94           reg = <0x00 0x02900000 0x00 0x1000>,
95                 <0x00 0x02907000 0x00 0x400>,
96                 <0x00 0x0d000000 0x00 0x00800000>,
97                 <0x00 0x10000000 0x00 0x08000000>;
98           reg-names = "intd_cfg", "user_cfg", "reg", "mem";
99           ti,syscon-pcie-ctrl = <&pcie0_ctrl 0x4070>;
100           max-link-speed = <3>;
101           num-lanes = <2>;
102           power-domains = <&k3_pds 239 TI_SCI_PD_EXCLUSIVE>;
103           clocks = <&k3_clks 239 1>;
104           clock-names = "fck";
105           max-functions = /bits/ 8 <6>;
106           dma-coherent;
107           phys = <&serdes0_pcie_link>;
108           phy-names = "pcie-phy";
109       };
110    };
111