xref: /linux/Documentation/devicetree/bindings/infiniband/hisilicon-hns-roce.txt (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1Hisilicon RoCE DT description
2
3Hisilicon RoCE engine is a part of network subsystem.
4It works depending on other part of network subsystem, such as gmac and
5dsa fabric.
6
7Additional properties are described here:
8
9Required properties:
10- compatible: Should contain "hisilicon,hns-roce-v1".
11- reg: Physical base address of the RoCE driver and
12length of memory mapped region.
13- eth-handle: phandle, specifies a reference to a node
14representing a ethernet device.
15- dsaf-handle: phandle, specifies a reference to a node
16representing a dsaf device.
17- node_guid: a number that uniquely identifies a device or component
18- #address-cells: must be 2
19- #size-cells: must be 2
20Optional properties:
21- dma-coherent: Present if DMA operations are coherent.
22- interrupts: should contain 32 completion event irq,1 async event irq
23and 1 event overflow irq.
24- interrupt-names:should be one of 34 irqs for roce device
25  - hns-roce-comp-0 ~ hns-roce-comp-31: 32 complete event irq
26  - hns-roce-async: 1 async event irq
27  - hns-roce-common: named common exception warning irq
28Example:
29	infiniband@c4000000 {
30			compatible = "hisilicon,hns-roce-v1";
31			reg = <0x0 0xc4000000 0x0 0x100000>;
32			dma-coherent;
33			eth-handle = <&eth2 &eth3 &eth4 &eth5 &eth6 &eth7>;
34			dsaf-handle = <&soc0_dsa>;
35			node-guid = [00 9A CD 00 00 01 02 03];
36			#address-cells = <2>;
37			#size-cells = <2>;
38			interrupt-parent = <&mbigen_dsa>;
39			interrupts = <722 1>,
40					<723 1>,
41					<724 1>,
42					<725 1>,
43					<726 1>,
44					<727 1>,
45					<728 1>,
46					<729 1>,
47					<730 1>,
48					<731 1>,
49					<732 1>,
50					<733 1>,
51					<734 1>,
52					<735 1>,
53					<736 1>,
54					<737 1>,
55					<738 1>,
56					<739 1>,
57					<740 1>,
58					<741 1>,
59					<742 1>,
60					<743 1>,
61					<744 1>,
62					<745 1>,
63					<746 1>,
64					<747 1>,
65					<748 1>,
66					<749 1>,
67					<750 1>,
68					<751 1>,
69					<752 1>,
70					<753 1>,
71					<785 1>,
72					<754 4>;
73
74			interrupt-names = "hns-roce-comp-0",
75					"hns-roce-comp-1",
76					"hns-roce-comp-2",
77					"hns-roce-comp-3",
78					"hns-roce-comp-4",
79					"hns-roce-comp-5",
80					"hns-roce-comp-6",
81					"hns-roce-comp-7",
82					"hns-roce-comp-8",
83					"hns-roce-comp-9",
84					"hns-roce-comp-10",
85					"hns-roce-comp-11",
86					"hns-roce-comp-12",
87					"hns-roce-comp-13",
88					"hns-roce-comp-14",
89					"hns-roce-comp-15",
90					"hns-roce-comp-16",
91					"hns-roce-comp-17",
92					"hns-roce-comp-18",
93					"hns-roce-comp-19",
94					"hns-roce-comp-20",
95					"hns-roce-comp-21",
96					"hns-roce-comp-22",
97					"hns-roce-comp-23",
98					"hns-roce-comp-24",
99					"hns-roce-comp-25",
100					"hns-roce-comp-26",
101					"hns-roce-comp-27",
102					"hns-roce-comp-28",
103					"hns-roce-comp-29",
104					"hns-roce-comp-30",
105					"hns-roce-comp-31",
106					"hns-roce-async",
107					"hns-roce-common";
108		};
109