Define connection bindings (external PHY connections and internal links)
for the ENETC on-chip ethernet controllers.
Signed-off-by: Claudiu Manoil <claudiu.man...@nxp.com>
---
v3 - added this patch to the set
v4 - documented strictly the enetc node bindings, changed node type
from "pci" to "ethernet" and added compatible string (Rob H.)
.../devicetree/bindings/net/fsl-enetc.txt | 69 ++++++++++++++++++++++
1 file changed, 69 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/fsl-enetc.txt
diff --git a/Documentation/devicetree/bindings/net/fsl-enetc.txt
b/Documentation/devicetree/bindings/net/fsl-enetc.txt
new file mode 100644
index 0000000..c812e25
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/fsl-enetc.txt
@@ -0,0 +1,69 @@
+* ENETC ethernet device tree bindings
+
+Depending on board design and ENETC port type (internal or
+external) there are two supported link modes specified by
+below device tree bindings.
+
+Required properties:
+
+- reg : Specifies PCIe Device Number and Function
+ Number of the ENETC endpoint device, according
+ to parent node bindings.
+- compatible : Should be "fsl,enetc".
+
+1) The ENETC external port is connected to a MDIO configurable phy:
+
+In this case, the ENETC node should include a "mdio" sub-node
+that in turn should contain the "ethernet-phy" node describing the
+external phy. Below properties are required, their bindings
+already defined in ethernet.txt or phy.txt, under
+Documentation/devicetree/bindings/net/*.
+
+Required:
+
+- phy-handle : Phandle to a PHY on the MDIO bus.
+ Defined in ethernet.txt.
+
+- phy-connection-type : Defined in ethernet.txt.
+
+- mdio : "mdio" node, defined in mdio.txt.
+
+- ethernet-phy : "ethernet-phy" node, defined in phy.txt.
+
+Example:
+
+ ethernet@0,0 {
+ compatible = "fsl,enetc";
+ reg = <0x000000 0 0 0 0>;
+ phy-handle = <&sgmii_phy0>;
+ phy-connection-type = "sgmii";
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ sgmii_phy0: ethernet-phy@2 {
+ reg = <0x2>;
+ };
+ };
+ };
+
+2) The ENETC port is an internal port or has a fixed-link external
+connection:
+
+In this case, the ENETC port node defines a fixed link connection,
+as specified by "fixed-link.txt", under
+Documentation/devicetree/bindings/net/*.
+
+Required:
+
+- fixed-link : "fixed-link" node, defined in "fixed-link.txt".
+
+Example:
+ ethernet@0,2 {
+ compatible = "fsl,enetc";
+ reg = <0x000200 0 0 0 0>;
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ };
+ };
--
2.7.4
