[PATCH 3/3] docs: dt: writing-schema: document expectations on example DTS

[Krzysztof Kozlowski]

Devicetree binding maintainers expect the example DTS in a binding to
show the usage of only this one particular binding, without unrelated
device nodes.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
 Documentation/devicetree/bindings/writing-schema.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/writing-schema.rst b/Documentation/devicetree/bindings/writing-schema.rst
index a35859f3be00..7e71cdd1d6de 100644
--- a/Documentation/devicetree/bindings/writing-schema.rst
+++ b/Documentation/devicetree/bindings/writing-schema.rst
@@ -92,8 +92,10 @@ additionalProperties / unevaluatedProperties
       'unevaluatedProperties: false'.  Typically bus or common-part schemas.
 
 examples
-  Optional. A list of one or more DTS hunks implementing the
-  binding. Note: YAML doesn't allow leading tabs, so spaces must be used instead.
+  Optional. A list of one or more DTS hunks implementing this binding only.
+  Example should not contain unrelated device nodes, e.g. consumer nodes in a
+  provider binding, other nodes referenced by phandle.
+  Note: YAML doesn't allow leading tabs, so spaces must be used instead.
 
 Unless noted otherwise, all properties are required.
 
-- 
2.34.1