marvell.txt

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    1 Marvell DSA Switch Device Tree Bindings
    2 ---------------------------------------
    3 
    4 WARNING: This binding is currently unstable. Do not program it into a
    5 FLASH never to be changed again. Once this binding is stable, this
    6 warning will be removed.
    7 
    8 If you need a stable binding, use the old dsa.txt binding.
    9 
   10 Marvell Switches are MDIO devices. The following properties should be
   11 placed as a child node of an mdio device.
   12 
   13 The properties described here are those specific to Marvell devices.
   14 Additional required and optional properties can be found in dsa.txt.
   15 
   16 The compatibility string is used only to find an identification register,
   17 which is at a different MDIO base address in different switch families.
   18 - "marvell,mv88e6085"   : Switch has base address 0x10. Use with models:
   19                           6085, 6095, 6097, 6123, 6131, 6141, 6161, 6165,
   20                           6171, 6172, 6175, 6176, 6185, 6240, 6320, 6321,
   21                           6341, 6350, 6351, 6352
   22 - "marvell,mv88e6190"   : Switch has base address 0x00. Use with models:
   23                           6190, 6190X, 6191, 6290, 6390, 6390X
   24 - "marvell,mv88e6250"   : Switch has base address 0x08 or 0x18. Use with model:
   25                           6220, 6250
   26 
   27 Required properties:
   28 - compatible            : Should be one of "marvell,mv88e6085",
   29                           "marvell,mv88e6190" or "marvell,mv88e6250" as
   30                           indicated above
   31 - reg                   : Address on the MII bus for the switch.
   32 
   33 Optional properties:
   34 
   35 - reset-gpios           : Should be a gpio specifier for a reset line
   36 - interrupts            : Interrupt from the switch
   37 - interrupt-controller  : Indicates the switch is itself an interrupt
   38                           controller. This is used for the PHY interrupts.
   39 #interrupt-cells = <2>  : Controller uses two cells, number and flag
   40 - eeprom-length         : Set to the length of an EEPROM connected to the
   41                           switch. Must be set if the switch can not detect
   42                           the presence and/or size of a connected EEPROM,
   43                           otherwise optional.
   44 - mdio                  : Container of PHY and devices on the switches MDIO
   45                           bus.
   46 - mdio?         : Container of PHYs and devices on the external MDIO
   47                           bus. The node must contains a compatible string of
   48                           "marvell,mv88e6xxx-mdio-external"
   49 
   50 Example:
   51 
   52         mdio {
   53                 #address-cells = <1>;
   54                 #size-cells = <0>;
   55                 interrupt-parent = <&gpio0>;
   56                 interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
   57                 interrupt-controller;
   58                 #interrupt-cells = <2>;
   59 
   60                 switch0: switch@0 {
   61                         compatible = "marvell,mv88e6085";
   62                         reg = <0>;
   63                         reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
   64 
   65                         mdio {
   66                                 #address-cells = <1>;
   67                                 #size-cells = <0>;
   68                                 switch1phy0: switch1phy0@0 {
   69                                         reg = <0>;
   70                                         interrupt-parent = <&switch0>;
   71                                         interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
   72                                 };
   73                         };
   74                 };
   75         };
   76 
   77         mdio {
   78                 #address-cells = <1>;
   79                 #size-cells = <0>;
   80                 interrupt-parent = <&gpio0>;
   81                 interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
   82                 interrupt-controller;
   83                 #interrupt-cells = <2>;
   84 
   85                 switch0: switch@0 {
   86                         compatible = "marvell,mv88e6190";
   87                         reg = <0>;
   88                         reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
   89 
   90                         mdio {
   91                                 #address-cells = <1>;
   92                                 #size-cells = <0>;
   93                                 switch1phy0: switch1phy0@0 {
   94                                         reg = <0>;
   95                                         interrupt-parent = <&switch0>;
   96                                         interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
   97                                 };
   98                         };
   99 
  100                         mdio1 {
  101                                 compatible = "marvell,mv88e6xxx-mdio-external";
  102                                 #address-cells = <1>;
  103                                 #size-cells = <0>;
  104                                 switch1phy9: switch1phy0@9 {
  105                                         reg = <9>;
  106                                 };
  107                         };
  108                 };
  109         };

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