1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/pci/snps,dw-pcie-ep.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Synopsys DesignWare PCIe endpoint interface
8
9 maintainers:
10 - Jingoo Han <jingoohan1@gmail.com>
11 - Gustavo Pimentel <gustavo.pimentel@synopsys.com>
12
13 description: |
14 Synopsys DesignWare PCIe host controller endpoint
15
16 allOf:
17 - $ref: /schemas/pci/pci-ep.yaml#
18
19 properties:
20 compatible:
21 anyOf:
22 - {}
23 - const: snps,dw-pcie-ep
24
25 reg:
26 description: |
27 It should contain Data Bus Interface (dbi) and config registers for all
28 versions.
29 For designware core version >= 4.80, it may contain ATU address space.
30 minItems: 2
31 maxItems: 4
32
33 reg-names:
34 minItems: 2
35 maxItems: 4
36 items:
37 enum: [dbi, dbi2, config, atu, addr_space, link, atu_dma, appl]
38
39 reset-gpio:
40 description: GPIO pin number of PERST# signal
41 maxItems: 1
42 deprecated: true
43
44 reset-gpios:
45 description: GPIO controlled connection to PERST# signal
46 maxItems: 1
47
48 snps,enable-cdm-check:
49 type: boolean
50 description: |
51 This is a boolean property and if present enables
52 automatic checking of CDM (Configuration Dependent Module) registers
53 for data corruption. CDM registers include standard PCIe configuration
54 space registers, Port Logic registers, DMA and iATU (internal Address
55 Translation Unit) registers.
56
57 num-ib-windows:
58 $ref: /schemas/types.yaml#/definitions/uint32
59 maximum: 256
60 description: number of inbound address translation windows
61 deprecated: true
62
63 num-ob-windows:
64 $ref: /schemas/types.yaml#/definitions/uint32
65 maximum: 256
66 description: number of outbound address translation windows
67 deprecated: true
68
69 required:
70 - reg
71 - reg-names
72 - compatible
73
74 additionalProperties: true
75
76 examples:
77 - |
78 bus {
79 #address-cells = <1>;
80 #size-cells = <1>;
81 pcie-ep@dfd00000 {
82 compatible = "snps,dw-pcie-ep";
83 reg = <0xdfc00000 0x0001000>, /* IP registers 1 */
84 <0xdfc01000 0x0001000>, /* IP registers 2 */
85 <0xd0000000 0x2000000>; /* Configuration space */
86 reg-names = "dbi", "dbi2", "addr_space";
87 };
88 };
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