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* ENETC ethernet device tree bindings
Depending on board design and ENETC port type (internal or
external) there are two supported link modes specified by
below device tree bindings.
Required properties:
- reg : Specifies PCIe Device Number and Function
Number of the ENETC endpoint device, according
to parent node bindings.
- compatible : Should be "fsl,enetc".
1) The ENETC external port is connected to a MDIO configurable phy:
In this case, the ENETC node should include a "mdio" sub-node
that in turn should contain the "ethernet-phy" node describing the
external phy. Below properties are required, their bindings
already defined in Documentation/devicetree/bindings/net/ethernet.txt or
Documentation/devicetree/bindings/net/phy.txt.
Required:
- phy-handle : Phandle to a PHY on the MDIO bus.
Defined in ethernet.txt.
- phy-connection-type : Defined in ethernet.txt.
- mdio : "mdio" node, defined in mdio.txt.
- ethernet-phy : "ethernet-phy" node, defined in phy.txt.
Example:
ethernet@0,0 {
compatible = "fsl,enetc";
reg = <0x000000 0 0 0 0>;
phy-handle = <&sgmii_phy0>;
phy-connection-type = "sgmii";
mdio {
#address-cells = <1>;
#size-cells = <0>;
sgmii_phy0: ethernet-phy@2 {
reg = <0x2>;
};
};
};
2) The ENETC port is an internal port or has a fixed-link external
connection:
In this case, the ENETC port node defines a fixed link connection,
as specified by Documentation/devicetree/bindings/net/fixed-link.txt.
Required:
- fixed-link : "fixed-link" node, defined in "fixed-link.txt".
Example:
ethernet@0,2 {
compatible = "fsl,enetc";
reg = <0x000200 0 0 0 0>;
fixed-link {
speed = <1000>;
full-duplex;
};
};
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