Documentation/devicetree/bindings/infiniband/hisilicon-hns-roce.txt

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