59 lines
2.6 KiB
Plaintext
59 lines
2.6 KiB
Plaintext
* Texas Instruments - dp83867 Giga bit ethernet phy
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Required properties:
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- reg - The ID number for the phy, usually a small integer
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- ti,rx-internal-delay - RGMII Receive Clock Delay - see dt-bindings/net/ti-dp83867.h
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for applicable values. Required only if interface type is
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PHY_INTERFACE_MODE_RGMII_ID or PHY_INTERFACE_MODE_RGMII_RXID
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- ti,tx-internal-delay - RGMII Transmit Clock Delay - see dt-bindings/net/ti-dp83867.h
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for applicable values. Required only if interface type is
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PHY_INTERFACE_MODE_RGMII_ID or PHY_INTERFACE_MODE_RGMII_TXID
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- ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h
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for applicable values
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Note: If the interface type is PHY_INTERFACE_MODE_RGMII the TX/RX clock delays
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will be left at their default values, as set by the PHY's pin strapping.
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The default strapping will use a delay of 2.00 ns. Thus
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PHY_INTERFACE_MODE_RGMII, by default, does not behave as RGMII with no
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internal delay, but as PHY_INTERFACE_MODE_RGMII_ID. The device tree
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should use "rgmii-id" if internal delays are desired as this may be
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changed in future to cause "rgmii" mode to disable delays.
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Optional property:
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- ti,min-output-impedance - MAC Interface Impedance control to set
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the programmable output impedance to
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minimum value (35 ohms).
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- ti,max-output-impedance - MAC Interface Impedance control to set
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the programmable output impedance to
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maximum value (70 ohms).
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- ti,dp83867-rxctrl-strap-quirk - This denotes the fact that the
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board has RX_DV/RX_CTRL pin strapped in
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mode 1 or 2. To ensure PHY operation,
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there are specific actions that
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software needs to take when this pin is
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strapped in these modes. See data manual
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for details.
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- ti,clk-output-sel - Muxing option for CLK_OUT pin. See dt-bindings/net/ti-dp83867.h
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for applicable values. The CLK_OUT pin can also
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be disabled by this property. When omitted, the
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PHY's default will be left as is.
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Note: ti,min-output-impedance and ti,max-output-impedance are mutually
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exclusive. When both properties are present ti,max-output-impedance
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takes precedence.
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Default child nodes are standard Ethernet PHY device
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nodes as described in Documentation/devicetree/bindings/net/phy.txt
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Example:
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ethernet-phy@0 {
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reg = <0>;
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ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_25_NS>;
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ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>;
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ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
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};
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Datasheet can be found:
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http://www.ti.com/product/DP83867IR/datasheet
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