Device Tree Bindings for DPAA backplane available on Layerscape
communications processors.
Signed-off-by: Florinel Iordache <florinel.iordache@xxxxxxx>
---
.../devicetree/bindings/net/dpaa-backplane.txt | 105 +++++++++++++++++++++
1 file changed, 105 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/dpaa-backplane.txt
diff --git a/Documentation/devicetree/bindings/net/dpaa-backplane.txt b/Documentation/devicetree/bindings/net/dpaa-backplane.txt
new file mode 100644
index 0000000..f147c84
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/dpaa-backplane.txt
@@ -0,0 +1,105 @@
+=============================================================================
+DPAA Backplane Device Bindings
+
+CONTENTS
+ - SerDes Node
+ - PCS Phy Node
+
+=============================================================================
+SerDes Node
+
+DESCRIPTION
+
+SerDes (Serializer/Deserializer) HW peripheral
+
+PROPERTIES
+
+- compatible
+ Usage: required
+ Value type: <stringlist>
+ Definition: Specifies the type of SerDes.
+ Must include the prefix "fsl,serdes"
+ SerDes can be of different types:
+ - 10G SerDes must be specified as: "fsl,serdes-10g"
+ - 28G SerDes must be specified as: "fsl,serdes-28g"
+
+- reg
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Specifies the offset of the SerDes configuration registers
+
+- little-endian
+ Usage: optional
+ Value type: <Boolean>
+ Definition: Specifies endianness access to SerDes registers.
+ If omitted, big-endian will be used
+ See common-properties.txt for complete definition
+
+EXAMPLE
+
+Example of 10G SerDes node:
+
+serdes1: serdes@1ea0000 {
+ compatible = "fsl,serdes-10g";
+ reg = <0x0 0x1ea0000 0 0x00002000>;
+ little-endian;
+};
+
+=============================================================================
+PCS Phy Node
+
+DESCRIPTION
+
+PCS Phy (Physical Coding Sublayer / Physical layer) node
+
+PROPERTIES
+
+- compatible
+ Usage: required
+ Value type: <stringlist>
+ Definition: A standard property. Specifies the IEEE 802.3 Clause
+ Different IEEE 802.3 Clauses can be specified:
+ - Clause 22 must be specified as: "ethernet-phy-ieee802.3-c22"
+ - Clause 45 must be specified as: "ethernet-phy-ieee802.3-c45"
+ For complete definition see:
+ Documentation/devicetree/bindings/net/phy.txt
+
+- reg
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: A standard property.
+ Specifies the offset of the PCS Phy configuration registers
+ For complete definition see:
+ Documentation/devicetree/bindings/net/phy.txt
+
+- backplane-mode
+ Usage: required
+ Value type: <stringlist>
+ Definition: Specifies the speed and type of the protocol used
+ Different speeds and backplane protocol types can be used:
+ - 10GBase-KR must be specified as: "10gbase-kr"
+ - 40GBase-KR must be specified as: "40gbase-kr"
+
+- fsl,lane-handle
+ Usage: required
+ Value type: <phandle>
+ Definition: Specifies the reference to a node representing the SerDes
+ device
+
+- fsl,lane-reg
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Specifies the offsets of the SerDes lanes configuration
+ registers
+
+EXAMPLE
+
+Example of pcs phy node for 10GBase-KR:
+
+pcs_phy1: ethernet-phy@0 {
+ compatible = "ethernet-phy-ieee802.3-c45";
+ backplane-mode = "10gbase-kr";
+ reg = <0x0>;
+ fsl,lane-handle = <&serdes1>;
+ fsl,lane-reg = <0xE00>; /* lane G */
+};
--
1.9.1
