106 lines
2.7 KiB
Plaintext
106 lines
2.7 KiB
Plaintext
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=============================================================================
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DPAA Backplane Device Bindings
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CONTENTS
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- SerDes Node
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- PCS Phy Node
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=============================================================================
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SerDes Node
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DESCRIPTION
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SerDes (Serializer/Deserializer) HW peripheral
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PROPERTIES
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- compatible
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Usage: required
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Value type: <stringlist>
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Definition: Specifies the type of SerDes.
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Must include the prefix "fsl,serdes"
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SerDes can be of different types:
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- 10G SerDes must be specified as: "fsl,serdes-10g"
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- 28G SerDes must be specified as: "fsl,serdes-28g"
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: Specifies the offset of the SerDes configuration registers
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- little-endian
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Usage: optional
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Value type: <Boolean>
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Definition: Specifies endianness access to SerDes registers.
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If omitted, big-endian will be used
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See common-properties.txt for complete definition
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EXAMPLE
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Example of 10G SerDes node:
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serdes1: serdes@1ea0000 {
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compatible = "fsl,serdes-10g";
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reg = <0x0 0x1ea0000 0 0x00002000>;
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little-endian;
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};
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=============================================================================
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PCS Phy Node
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DESCRIPTION
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PCS Phy (Physical Coding Sublayer / Physical layer) node
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PROPERTIES
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- compatible
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Usage: required
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Value type: <stringlist>
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Definition: A standard property. Specifies the IEEE 802.3 Clause
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Different IEEE 802.3 Clauses can be specified:
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- Clause 22 must be specified as: "ethernet-phy-ieee802.3-c22"
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- Clause 45 must be specified as: "ethernet-phy-ieee802.3-c45"
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For complete definition see:
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Documentation/devicetree/bindings/net/phy.txt
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- reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: A standard property.
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Specifies the offset of the PCS Phy configuration registers
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For complete definition see:
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Documentation/devicetree/bindings/net/phy.txt
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- backplane-mode
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Usage: required
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Value type: <stringlist>
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Definition: Specifies the speed and type of the protocol used
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Different speeds and backplane protocol types can be used:
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- 10GBase-KR must be specified as: "10gbase-kr"
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- 40GBase-KR must be specified as: "40gbase-kr"
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- fsl,lane-handle
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Usage: required
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Value type: <phandle>
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Definition: Specifies the reference to a node representing the SerDes
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device
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- fsl,lane-reg
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Usage: required
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Value type: <prop-encoded-array>
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Definition: Specifies the offsets of the SerDes lanes configuration
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registers
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EXAMPLE
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Example of pcs phy node for 10GBase-KR:
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pcs_phy1: ethernet-phy@0 {
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compatible = "ethernet-phy-ieee802.3-c45";
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backplane-mode = "10gbase-kr";
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reg = <0x0>;
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fsl,lane-handle = <&serdes1>;
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fsl,lane-reg = <0xE00>; /* lane G */
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};
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