Add binding for refclk driver used to route the refclk out of the
SERDES.

Signed-off-by: Kishon Vijay Abraham I <redacted>
---
 .../bindings/phy/phy-cadence-torrent.yaml       | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
index e266ade53d87..d3b96afd514c 100644
--- a/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
+++ b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml

@@ -125,6 +125,23 @@ patternProperties:
 
     additionalProperties: false
 
+  "^refclk-driver":
+    type: object
+    description: |
+      Driver to route the reference clock out of the SERDES.
+    properties:
+      clocks:
+        maxItems: 1
+        description: Phandle to clock nodes representing the input to the
+          refclk driver.
+
+      "#clock-cells":
+        const: 0