dt-bindings: net: Add Cortina device tree bindings

Add device tree description info for Cortina 10G phy devices.

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/cortina.txt b/Documentation/devicetree/bindings/net/cortina.txt
new file mode 100644 (file)
index 0000000..40d0bd9
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/cortina.txt
@@ -0,0 +1,21 @@
+Cortina Phy Driver Device Tree Bindings
+---------------------------------------
+
+CORTINA is a registered trademark of Cortina Systems, Inc.
+
+The driver supports the Cortina Electronic Dispersion Compensation (EDC)
+devices, equipped with clock and data recovery (CDR) circuits. These
+devices make use of registers that are not compatible with Clause 45 or
+Clause 22, therefore they need to be described using the
+"ethernet-phy-id" compatible.
+
+Since the driver only implements  polling mode support, interrupts info
+can be skipped.
+
+Example (CS4340 phy):
+       mdio {
+               cs4340_phy@10 {
+                       compatible = "ethernet-phy-id13e5.1002";
+                       reg = <0x10>;
+               };
+       };