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authorAppana Durga Kedareswara Rao <appana.durga.rao@xilinx.com>2016-08-10 11:20:07 +0530
committerDavid S. Miller <davem@davemloft.net>2016-08-12 16:57:20 -0700
commit71e11aff34510e4133965d63ae6d91a0cf4aa876 (patch)
tree5156bbb5f4a5e0600da3c5dd2e4eccb7c8000b57 /Documentation
parent300d8b93d73533411a98362350fe7d1795f1a044 (diff)
Documentation: DT: net: Add Xilinx gmiitorgmii converter device tree binding documentation
Device-tree binding documentation for xilinx gmiitorgmii converter. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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+XILINX GMIITORGMII Converter Driver Device Tree Bindings
+--------------------------------------------------------
+
+The Gigabit Media Independent Interface (GMII) to Reduced Gigabit Media
+Independent Interface (RGMII) core provides the RGMII between RGMII-compliant
+Ethernet physical media devices (PHY) and the Gigabit Ethernet controller.
+This core can be used in all three modes of operation(10/100/1000 Mb/s).
+The Management Data Input/Output (MDIO) interface is used to configure the
+Speed of operation. This core can switch dynamically between the three
+Different speed modes by configuring the conveter register through mdio write.
+
+This converter sits between the ethernet MAC and the external phy.
+MAC <==> GMII2RGMII <==> RGMII_PHY
+
+For more details about mdio please refer phy.txt file in the same directory.
+
+Required properties:
+- compatible : Should be "xlnx,gmii-to-rgmii-1.0"
+- reg : The ID number for the phy, usually a small integer
+- phy-handle : Should point to the external phy device.
+ See ethernet.txt file in the same directory.
+
+Example:
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ phy: ethernet-phy@0 {
+ ......
+ };
+ gmiitorgmii: gmiitorgmii@8 {
+ compatible = "xlnx,gmii-to-rgmii-1.0";
+ reg = <8>;
+ phy-handle = <&phy>;
+ };
+ };