Documentation/devicetree/bindings/net/brcm,bcmgenet.txt

   1 * Broadcom BCM7xxx Ethernet Controller (GENET)
   2
   3 Required properties:
   4 - compatible: should contain one of "brcm,genet-v1", "brcm,genet-v2",
   5   "brcm,genet-v3", "brcm,genet-v4", "brcm,genet-v5".
   6 - reg: address and length of the register set for the device
   7 - interrupts and/or interrupts-extended: must be two cells, the first cell
   8   is the general purpose interrupt line, while the second cell is the
   9   interrupt for the ring RX and TX queues operating in ring mode.  An
  10   optional third interrupt cell for Wake-on-LAN can be specified.
  11   See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
  12   for information on the property specifics.
  13 - phy-mode: see ethernet.txt file in the same directory
  14 - #address-cells: should be 1
  15 - #size-cells: should be 1
  16
  17 Optional properties:
  18 - clocks: When provided, must be two phandles to the functional clocks nodes
  19   of the GENET block. The first phandle is the main GENET clock used during
  20   normal operation, while the second phandle is the Wake-on-LAN clock.
  21 - clock-names: When provided, names of the functional clock phandles, first
  22   name should be "enet" and second should be "enet-wol".
  23
  24 - phy-handle: See ethernet.txt file in the same directory; used to describe
  25   configurations where a PHY (internal or external) is used.
  26
  27 - fixed-link: When the GENET interface is connected to a MoCA hardware block or
  28   when operating in a RGMII to RGMII type of connection, or when the MDIO bus is
  29   voluntarily disabled, this property should be used to describe the "fixed link".
  30   See Documentation/devicetree/bindings/net/fixed-link.txt for information on
  31   the property specifics
  32
  33 Required child nodes:
  34
  35 - mdio bus node: this node should always be present regardless of the PHY
  36   configuration of the GENET instance
  37
  38 MDIO bus node required properties:
  39
  40 - compatible: should contain one of "brcm,genet-mdio-v1", "brcm,genet-mdio-v2"
  41   "brcm,genet-mdio-v3", "brcm,genet-mdio-v4", "brcm,genet-mdio-v5", the version
  42   has to match the parent node compatible property (e.g: brcm,genet-v4 pairs
  43   with brcm,genet-mdio-v4)
  44 - reg: address and length relative to the parent node base register address
  45 - #address-cells: address cell for MDIO bus addressing, should be 1
  46 - #size-cells: size of the cells for MDIO bus addressing, should be 0
  47
  48 Ethernet PHY node properties:
  49
  50 See Documentation/devicetree/bindings/net/phy.txt for the list of required and
  51 optional properties.
  52
  53 Internal Gigabit PHY example:
  54
  55 ethernet@f0b60000 {
  56         phy-mode = "internal";
  57         phy-handle = <&phy1>;
  58         mac-address = [ 00 10 18 36 23 1a ];
  59         compatible = "brcm,genet-v4";
  60         #address-cells = <0x1>;
  61         #size-cells = <0x1>;
  62         reg = <0xf0b60000 0xfc4c>;
  63         interrupts = <0x0 0x14 0x0>, <0x0 0x15 0x0>;
  64
  65         mdio@e14 {
  66                 compatible = "brcm,genet-mdio-v4";
  67                 #address-cells = <0x1>;
  68                 #size-cells = <0x0>;
  69                 reg = <0xe14 0x8>;
  70
  71                 phy1: ethernet-phy@1 {
  72                         max-speed = <1000>;
  73                         reg = <0x1>;
  74                         compatible = "ethernet-phy-ieee802.3-c22";
  75                 };
  76         };
  77 };
  78
  79 MoCA interface / MAC to MAC example:
  80
  81 ethernet@f0b80000 {
  82         phy-mode = "moca";
  83         fixed-link = <1 0 1000 0 0>;
  84         mac-address = [ 00 10 18 36 24 1a ];
  85         compatible = "brcm,genet-v4";
  86         #address-cells = <0x1>;
  87         #size-cells = <0x1>;
  88         reg = <0xf0b80000 0xfc4c>;
  89         interrupts = <0x0 0x16 0x0>, <0x0 0x17 0x0>;
  90
  91         mdio@e14 {
  92                 compatible = "brcm,genet-mdio-v4";
  93                 #address-cells = <0x1>;
  94                 #size-cells = <0x0>;
  95                 reg = <0xe14 0x8>;
  96         };
  97 };
  98
  99
 100 External MDIO-connected Gigabit PHY/switch:
 101
 102 ethernet@f0ba0000 {
 103         phy-mode = "rgmii";
 104         phy-handle = <&phy0>;
 105         mac-address = [ 00 10 18 36 26 1a ];
 106         compatible = "brcm,genet-v4";
 107         #address-cells = <0x1>;
 108         #size-cells = <0x1>;
 109         reg = <0xf0ba0000 0xfc4c>;
 110         interrupts = <0x0 0x18 0x0>, <0x0 0x19 0x0>;
 111
 112         mdio@e14 {
 113                 compatible = "brcm,genet-mdio-v4";
 114                 #address-cells = <0x1>;
 115                 #size-cells = <0x0>;
 116                 reg = <0xe14 0x8>;
 117
 118                 phy0: ethernet-phy@0 {
 119                         max-speed = <1000>;
 120                         reg = <0x0>;
 121                         compatible = "ethernet-phy-ieee802.3-c22";
 122                 };
 123         };
 124 };