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>
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@ -5,6 +5,10 @@ Required properties;
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- reg: I2C address
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Required node:
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- port: Input port node with endpoint definition, as described
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in Documentation/devicetree/bindings/graph.txt
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Optional properties:
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- interrupts: interrupt number and trigger type
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default: polling
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