FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/net/fsl-fec.txt

     * Freescale Fast Ethernet Controller (FEC)
     
     Required properties:
     - compatible : Should be "fsl,<soc>-fec"
     - reg : Address and length of the register set for the device
     - interrupts : Should contain fec interrupt
     - phy-mode : See ethernet.txt file in the same directory
     
     Optional properties:
    - phy-supply : regulator that powers the Ethernet PHY.
    - phy-handle : phandle to the PHY device connected to this device.
    - fixed-link : Assume a fixed link. See fixed-link.txt in the same directory.
      Use instead of phy-handle.
    - fsl,num-tx-queues : The property is valid for enet-avb IP, which supports
      hw multi queues. Should specify the tx queue number, otherwise set tx queue
      number to 1.
    - fsl,num-rx-queues : The property is valid for enet-avb IP, which supports
      hw multi queues. Should specify the rx queue number, otherwise set rx queue
      number to 1.
    - fsl,magic-packet : If present, indicates that the hardware supports waking
      up via magic packet.
    - fsl,err006687-workaround-present: If present indicates that the system has
      the hardware workaround for ERR006687 applied and does not need a software
      workaround.
    - fsl,stop-mode: register bits of stop mode control, the format is
                     <&gpr req_gpr req_bit>.
                     gpr is the phandle to general purpose register node.
                     req_gpr is the gpr register offset for ENET stop request.
                     req_bit is the gpr bit offset for ENET stop request.
     -interrupt-names:  names of the interrupts listed in interrupts property in
      the same order. The defaults if not specified are
      __Number of interrupts__   __Default__
            1                       "int0"
            2                       "int0", "pps"
            3                       "int0", "int1", "int2"
            4                       "int0", "int1", "int2", "pps"
      The order may be changed as long as they correspond to the interrupts
      property. Currently, only i.mx7 uses "int1" and "int2". They correspond to
      tx/rx queues 1 and 2. "int0" will be used for queue 0 and ENET_MII interrupts.
      For imx6sx, "int0" handles all 3 queues and ENET_MII. "pps" is for the pulse
      per second interrupt associated with 1588 precision time protocol(PTP).
    
    Optional subnodes:
    - mdio : specifies the mdio bus in the FEC, used as a container for phy nodes
      according to phy.txt in the same directory
    
    Deprecated optional properties:
            To avoid these, create a phy node according to phy.txt in the same
            directory, and point the fec's "phy-handle" property to it. Then use
            the phy's reset binding, again described by phy.txt.
    - phy-reset-gpios : Should specify the gpio for phy reset
    - phy-reset-duration : Reset duration in milliseconds.  Should present
      only if property "phy-reset-gpios" is available.  Missing the property
      will have the duration be 1 millisecond.  Numbers greater than 1000 are
      invalid and 1 millisecond will be used instead.
    - phy-reset-active-high : If present then the reset sequence using the GPIO
      specified in the "phy-reset-gpios" property is reversed (H=reset state,
      L=operation state).
    - phy-reset-post-delay : Post reset delay in milliseconds. If present then
      a delay of phy-reset-post-delay milliseconds will be observed after the
      phy-reset-gpios has been toggled. Can be omitted thus no delay is
      observed. Delay is in range of 1ms to 1000ms. Other delays are invalid.
    
    Example:
    
    ethernet@83fec000 {
            compatible = "fsl,imx51-fec", "fsl,imx27-fec";
            reg = <0x83fec000 0x4000>;
            interrupts = <87>;
            phy-mode = "mii";
            phy-reset-gpios = <&gpio2 14 GPIO_ACTIVE_LOW>; /* GPIO2_14 */
            local-mac-address = [00 04 9F 01 1B B9];
            phy-supply = <&reg_fec_supply>;
    };
    
    Example with phy specified:
    
    ethernet@83fec000 {
            compatible = "fsl,imx51-fec", "fsl,imx27-fec";
            reg = <0x83fec000 0x4000>;
            interrupts = <87>;
            phy-mode = "mii";
            phy-reset-gpios = <&gpio2 14 GPIO_ACTIVE_LOW>; /* GPIO2_14 */
            local-mac-address = [00 04 9F 01 1B B9];
            phy-supply = <&reg_fec_supply>;
            phy-handle = <&ethphy>;
            mdio {
                    clock-frequency = <5000000>;
                    ethphy: ethernet-phy@6 {
                            compatible = "ethernet-phy-ieee802.3-c22";
                            reg = <6>;
                            max-speed = <100>;
                    };
            };
    };

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