| * Texas Instruments - dp83867 Giga bit ethernet phy |
| |
| Required properties: |
| - reg - The ID number for the phy, usually a small integer |
| - ti,rx-internal-delay - RGMII Receive Clock Delay - see dt-bindings/net/ti-dp83867.h |
| for applicable values. Required only if interface type is |
| PHY_INTERFACE_MODE_RGMII_ID or PHY_INTERFACE_MODE_RGMII_RXID |
| - ti,tx-internal-delay - RGMII Transmit Clock Delay - see dt-bindings/net/ti-dp83867.h |
| for applicable values. Required only if interface type is |
| PHY_INTERFACE_MODE_RGMII_ID or PHY_INTERFACE_MODE_RGMII_TXID |
| - ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h |
| for applicable values |
| |
| Note: If the interface type is PHY_INTERFACE_MODE_RGMII the TX/RX clock delays |
| will be left at their default values, as set by the PHY's pin strapping. |
| The default strapping will use a delay of 2.00 ns. Thus |
| PHY_INTERFACE_MODE_RGMII, by default, does not behave as RGMII with no |
| internal delay, but as PHY_INTERFACE_MODE_RGMII_ID. The device tree |
| should use "rgmii-id" if internal delays are desired as this may be |
| changed in future to cause "rgmii" mode to disable delays. |
| |
| Optional property: |
| - ti,min-output-impedance - MAC Interface Impedance control to set |
| the programmable output impedance to |
| minimum value (35 ohms). |
| - ti,max-output-impedance - MAC Interface Impedance control to set |
| the programmable output impedance to |
| maximum value (70 ohms). |
| - ti,dp83867-rxctrl-strap-quirk - This denotes the fact that the |
| board has RX_DV/RX_CTRL pin strapped in |
| mode 1 or 2. To ensure PHY operation, |
| there are specific actions that |
| software needs to take when this pin is |
| strapped in these modes. See data manual |
| for details. |
| - ti,clk-output-sel - Muxing option for CLK_OUT pin. See dt-bindings/net/ti-dp83867.h |
| for applicable values. The CLK_OUT pin can also |
| be disabled by this property. When omitted, the |
| PHY's default will be left as is. |
| - ti,sgmii-ref-clock-output-enable - This denotes which |
| SGMII configuration is used (4 or 6-wire modes). |
| Some MACs work with differential SGMII clock. |
| See data manual for details. |
| |
| Note: ti,min-output-impedance and ti,max-output-impedance are mutually |
| exclusive. When both properties are present ti,max-output-impedance |
| takes precedence. |
| |
| Default child nodes are standard Ethernet PHY device |
| nodes as described in Documentation/devicetree/bindings/net/phy.txt |
| |
| Example: |
| |
| ethernet-phy@0 { |
| reg = <0>; |
| ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_25_NS>; |
| ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>; |
| ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>; |
| }; |
| |
| Datasheet can be found: |
| http://www.ti.com/product/DP83867IR/datasheet |