[PATCH 10/10] net: mdio-sam: Add device tree documentation for SAM MDIO

[Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>]

From: Georgi Vlaev <gvlaev@xxxxxxxxxxx>

Add device tree bindings document for the SAM MDIO block
present in Juniper's SAM FPGA.

Signed-off-by: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
[Ported from Juniper kernel]
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/net/mdio-sam.txt | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/mdio-sam.txt

diff --git a/Documentation/devicetree/bindings/net/mdio-sam.txt b/Documentation/devicetree/bindings/net/mdio-sam.txt
new file mode 100644
index 0000000..7d354e0
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/mdio-sam.txt
@@ -0,0 +1,48 @@
+Juniper SAM FPGA MFD MDIO bus properties.
+
+Required properties:
+- compatible : "jnx,mdio-sam"
+- reg : The start offset of the MDIO bus range
+- #address-cells = <1>;
+- #size-cells = <0>;
+
+Optional properties:
+
+Required properties for child nodes:
+- #address-cells = <1>;
+- #size-cells = <0>;
+- reg : The MDIO bus offset within the MDIO range.
+
+
+Example :
+
+	sam@10 {
+		compatible = "jnx,sam";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		mdio-sam@10 {
+			compatible = "jnx,mdio-sam";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40000>;
+
+			mdio0: mdio-sam@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x0>;
+			};
+
+			mdio1: mdio-sam@4000 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x4000>;
+			};
+
+			mdio2: mdio-sam@8000 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x8000>;
+			};
+		};
+	};
-- 
1.9.1

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