dt-bindings: tda998x: Document the required 'port' node.

All the users of the tda998x driver are component based and bind the
driver via the device graph method described in
Documentation/devicetree/bindings/graph.txt. Add the fact that the
'port' node is required to the bindings.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/display/bridge/tda998x.txt b/Documentation/devicetree/bindings/display/bridge/tda998x.txt
index e9e4bce40760e2d742160956943930b72c01b656..e178e6b9f9ee1ace419d5c9ccd4bf27a64799116 100644 (file)
--- a/Documentation/devicetree/bindings/display/bridge/tda998x.txt
+++ b/Documentation/devicetree/bindings/display/bridge/tda998x.txt
@@ -5,6 +5,10 @@ Required properties;
 
   - reg: I2C address
 
+Required node:
+  - port: Input port node with endpoint definition, as described
+        in Documentation/devicetree/bindings/graph.txt
+
 Optional properties:
   - interrupts: interrupt number and trigger type
        default: polling