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-rw-r--r--Documentation/devicetree/bindings/net/phy.txt10
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/net/phy.txt b/Documentation/devicetree/bindings/net/phy.txt
index 58307d0931c8..5b8c58903077 100644
--- a/Documentation/devicetree/bindings/net/phy.txt
+++ b/Documentation/devicetree/bindings/net/phy.txt
@@ -21,10 +21,18 @@ Optional Properties:
elements.
- max-speed: Maximum PHY supported speed (10, 100, 1000...)
+ If the phy's identifier is known then the list may contain an entry
+ of the form: "ethernet-phy-idAAAA.BBBB" where
+ AAAA - The value of the 16 bit Phy Identifier 1 register as
+ 4 hex digits. This is the chip vendor OUI bits 3:18
+ BBBB - The value of the 16 bit Phy Identifier 2 register as
+ 4 hex digits. This is the chip vendor OUI bits 19:24,
+ followed by 10 bits of a vendor specific ID.
+
Example:
ethernet-phy@0 {
- compatible = "ethernet-phy-ieee802.3-c22";
+ compatible = "ethernet-phy-id0141.0e90", "ethernet-phy-ieee802.3-c22";
interrupt-parent = <40000>;
interrupts = <35 1>;
reg = <0>;