Documentation/devicetree/bindings/net/brcm,bcm7445-switch-v4.0.txt

   1 * Broadcom Starfighter 2 integrated swich
   2
   3 Required properties:
   4
   5 - compatible: should be one of
   6         "brcm,bcm7445-switch-v4.0"
   7         "brcm,bcm7278-switch-v4.0"
   8         "brcm,bcm7278-switch-v4.8"
   9 - reg: addresses and length of the register sets for the device, must be 6
  10   pairs of register addresses and lengths
  11 - interrupts: interrupts for the devices, must be two interrupts
  12 - #address-cells: must be 1, see dsa/dsa.txt
  13 - #size-cells: must be 0, see dsa/dsa.txt
  14
  15 Deprecated binding required properties:
  16
  17 - dsa,mii-bus: phandle to the MDIO bus controller, see dsa/dsa.txt
  18 - dsa,ethernet: phandle to the CPU network interface controller, see dsa/dsa.txt
  19 - #address-cells: must be 2, see dsa/dsa.txt
  20
  21 Subnodes:
  22
  23 The integrated switch subnode should be specified according to the binding
  24 described in dsa/dsa.txt.
  25
  26 Optional properties:
  27
  28 - reg-names: litteral names for the device base register addresses, when present
  29   must be: "core", "reg", "intrl2_0", "intrl2_1", "fcb", "acb"
  30
  31 - interrupt-names: litternal names for the device interrupt lines, when present
  32   must be: "switch_0" and "switch_1"
  33
  34 - brcm,num-gphy: specify the maximum number of integrated gigabit PHYs in the
  35   switch
  36
  37 - brcm,num-rgmii-ports: specify the maximum number of RGMII interfaces supported
  38   by the switch
  39
  40 - brcm,fcb-pause-override: boolean property, if present indicates that the switch
  41   supports Failover Control Block pause override capability
  42
  43 - brcm,acb-packets-inflight: boolean property, if present indicates that the switch
  44   Admission Control Block supports reporting the number of packets in-flight in a
  45   switch queue
  46
  47 Port subnodes:
  48
  49 Optional properties:
  50
  51 - brcm,use-bcm-hdr: boolean property, if present, indicates that the switch
  52   port has Broadcom tags enabled (per-packet metadata)
  53
  54 Example:
  55
  56 switch_top@f0b00000 {
  57         compatible = "simple-bus";
  58         #size-cells = <1>;
  59         #address-cells = <1>;
  60         ranges = <0 0xf0b00000 0x40804>;
  61
  62         ethernet_switch@0 {
  63                 compatible = "brcm,bcm7445-switch-v4.0";
  64                 #size-cells = <0>;
  65                 #address-cells = <1>;
  66                 reg = <0x0 0x40000
  67                         0x40000 0x110
  68                         0x40340 0x30
  69                         0x40380 0x30
  70                         0x40400 0x34
  71                         0x40600 0x208>;
  72                 reg-names = "core", "reg", intrl2_0", "intrl2_1",
  73                             "fcb, "acb";
  74                 interrupts = <0 0x18 0
  75                                 0 0x19 0>;
  76                 brcm,num-gphy = <1>;
  77                 brcm,num-rgmii-ports = <2>;
  78                 brcm,fcb-pause-override;
  79                 brcm,acb-packets-inflight;
  80
  81                 ports {
  82                         #address-cells = <1>;
  83                         #size-cells = <0>;
  84
  85                         port@0 {
  86                                 label = "gphy";
  87                                 reg = <0>;
  88                         };
  89                 };
  90         };
  91 };
  92
  93 Example using the old DSA DeviceTree binding:
  94
  95 switch_top@f0b00000 {
  96         compatible = "simple-bus";
  97         #size-cells = <1>;
  98         #address-cells = <1>;
  99         ranges = <0 0xf0b00000 0x40804>;
 100
 101         ethernet_switch@0 {
 102                 compatible = "brcm,bcm7445-switch-v4.0";
 103                 #size-cells = <0>;
 104                 #address-cells = <2>;
 105                 reg = <0x0 0x40000
 106                         0x40000 0x110
 107                         0x40340 0x30
 108                         0x40380 0x30
 109                         0x40400 0x34
 110                         0x40600 0x208>;
 111                 interrupts = <0 0x18 0
 112                                 0 0x19 0>;
 113                 brcm,num-gphy = <1>;
 114                 brcm,num-rgmii-ports = <2>;
 115                 brcm,fcb-pause-override;
 116                 brcm,acb-packets-inflight;
 117
 118                 ...
 119                 switch@0 {
 120                         reg = <0 0>;
 121                         #size-cells = <0>;
 122                         #address-cells <1>;
 123
 124                         port@0 {
 125                                 label = "gphy";
 126                                 reg = <0>;
 127                                 brcm,use-bcm-hdr;
 128                         };
 129                         ...
 130                 };
 131         };
 132 };