[PATCH net-next v2 2/2] dt-bindings: net: microchip,ksz: document microchip,rmii-clk-internal

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Add documentation for selecting reference rmii clock on KSZ88X3 devices

Signed-off-by: Ante Knezic <ante.knezic@xxxxxxxxxxx>
---
 .../devicetree/bindings/net/dsa/microchip,ksz.yaml    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
index 41014f5c01c4..eaa347b04db1 100644
--- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
@@ -72,6 +72,25 @@ properties:
   interrupts:
     maxItems: 1
 
+  microchip,rmii-clk-internal:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Set if the RMII reference clock is provided internally. Otherwise
+      reference clock should be provided externally.
+
+if:
+  not:
+    properties:
+      compatible:
+        enum:
+          - microchip,ksz8863
+          - microchip,ksz8873
+then:
+  not:
+    required:
+      - microchip,rmii-clk-internal
+
+
 required:
   - compatible
   - reg
-- 
2.11.0





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