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- The following properties are common to the Ethernet controllers:
- NOTE: All 'phy*' properties documented below are Ethernet specific. For the
- generic PHY 'phys' property, see
- Documentation/devicetree/bindings/phy/phy-bindings.txt.
- - local-mac-address: array of 6 bytes, specifies the MAC address that was
- assigned to the network device;
- - mac-address: array of 6 bytes, specifies the MAC address that was last used by
- the boot program; should be used in cases where the MAC address assigned to
- the device by the boot program is different from the "local-mac-address"
- property;
- - nvmem-cells: phandle, reference to an nvmem node for the MAC address;
- - nvmem-cell-names: string, should be "mac-address" if nvmem is to be used;
- - max-speed: number, specifies maximum speed in Mbit/s supported by the device;
- - max-frame-size: number, maximum transfer unit (IEEE defined MTU), rather than
- the maximum frame size (there's contradiction in the Devicetree
- Specification).
- - phy-mode: string, operation mode of the PHY interface. This is now a de-facto
- standard property; supported values are:
- * "internal"
- * "mii"
- * "gmii"
- * "sgmii"
- * "qsgmii"
- * "tbi"
- * "rev-mii"
- * "rmii"
- * "rgmii" (RX and TX delays are added by the MAC when required)
- * "rgmii-id" (RGMII with internal RX and TX delays provided by the PHY, the
- MAC should not add the RX or TX delays in this case)
- * "rgmii-rxid" (RGMII with internal RX delay provided by the PHY, the MAC
- should not add an RX delay in this case)
- * "rgmii-txid" (RGMII with internal TX delay provided by the PHY, the MAC
- should not add an TX delay in this case)
- * "rtbi"
- * "smii"
- * "xgmii"
- * "trgmii"
- * "2000base-x",
- * "2500base-x",
- * "rxaui"
- * "xaui"
- * "10gbase-kr" (10GBASE-KR, XFI, SFI)
- - phy-connection-type: the same as "phy-mode" property but described in the
- Devicetree Specification;
- - phy-handle: phandle, specifies a reference to a node representing a PHY
- device; this property is described in the Devicetree Specification and so
- preferred;
- - phy: the same as "phy-handle" property, not recommended for new bindings.
- - phy-device: the same as "phy-handle" property, not recommended for new
- bindings.
- - rx-fifo-depth: the size of the controller's receive fifo in bytes. This
- is used for components that can have configurable receive fifo sizes,
- and is useful for determining certain configuration settings such as
- flow control thresholds.
- - tx-fifo-depth: the size of the controller's transmit fifo in bytes. This
- is used for components that can have configurable fifo sizes.
- - managed: string, specifies the PHY management type. Supported values are:
- "auto", "in-band-status". "auto" is the default, it usess MDIO for
- management if fixed-link is not specified.
- Child nodes of the Ethernet controller are typically the individual PHY devices
- connected via the MDIO bus (sometimes the MDIO bus controller is separate).
- They are described in the phy.txt file in this same directory.
- For non-MDIO PHY management see fixed-link.txt.
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