1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-C
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/bus/xlnx,ve
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: AMD CDX bus controller
8
9 description: |
10 CDX bus controller for AMD devices is implem
11 detect CDX bus and devices using the firmwar
12 The CDX bus manages multiple FPGA based hard
13 can support network, crypto or any other spe
14 devices. These FPGA based devices can be add
15 on run-time.
16
17 All devices on the CDX bus will have a uniqu
18 and a unique device ID (for MSI) correspondi
19 (one to one associated with the device). The
20 are used to configure SMMU and GIC-ITS respe
21
22 iommu-map property is used to define the set
23 corresponding to each device and the associa
24
25 The MSI writes are accompanied by sideband d
26 The msi-map property is used to associate th
27 device ID as well as the associated ITS cont
28
29 rproc property (xlnx,rproc) is used to ident
30 with which APU (Application Processor Unit)
31 the bus and device configuration.
32
33 maintainers:
34 - Nipun Gupta <nipun.gupta@amd.com>
35 - Nikhil Agarwal <nikhil.agarwal@amd.com>
36
37 properties:
38 compatible:
39 const: xlnx,versal-net-cdx
40
41 iommu-map: true
42
43 msi-map: true
44
45 xlnx,rproc:
46 $ref: /schemas/types.yaml#/definitions/pha
47 description:
48 phandle to the remoteproc_r5 rproc node
49 with remote processor.
50
51 ranges: true
52
53 "#address-cells":
54 enum: [1, 2]
55
56 "#size-cells":
57 enum: [1, 2]
58
59 required:
60 - compatible
61 - iommu-map
62 - msi-map
63 - xlnx,rproc
64 - ranges
65 - "#address-cells"
66 - "#size-cells"
67
68 additionalProperties: false
69
70 examples:
71 - |
72 cdx {
73 compatible = "xlnx,versal-net-cdx";
74 #address-cells = <1>;
75 #size-cells = <1>;
76 /* define map for RIDs 250-259 */
77 iommu-map = <250 &smmu 250 10>;
78 /* define msi map for RIDs 250-259 */
79 msi-map = <250 &its 250 10>;
80 xlnx,rproc = <&remoteproc_r5>;
81 ranges;
82 };
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