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-rw-r--r--Documentation/devicetree/bindings/net/phy.txt12
1 files changed, 11 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/net/phy.txt b/Documentation/devicetree/bindings/net/phy.txt
index bb8c742eb8c..7cd18fbfcf7 100644
--- a/Documentation/devicetree/bindings/net/phy.txt
+++ b/Documentation/devicetree/bindings/net/phy.txt
@@ -14,10 +14,20 @@ Required properties:
- linux,phandle : phandle for this node; likely referenced by an
ethernet controller node.
+Optional Properties:
+
+- compatible: Compatible list, may contain
+ "ethernet-phy-ieee802.3-c22" or "ethernet-phy-ieee802.3-c45" for
+ PHYs that implement IEEE802.3 clause 22 or IEEE802.3 clause 45
+ specifications. If neither of these are specified, the default is to
+ assume clause 22. The compatible list may also contain other
+ elements.
+
Example:
ethernet-phy@0 {
- linux,phandle = <2452000>
+ compatible = "ethernet-phy-ieee802.3-c22";
+ linux,phandle = <2452000>;
interrupt-parent = <40000>;
interrupts = <35 1>;
reg = <0>;