diff --git a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
index 63958cac339b..bf396e9466aa 100644
--- a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
@@ -97,6 +97,8 @@ properties:
           - description: register offset within syscfg
           - description: register bitmask for FMP bit
 
+  wakeup-source: true
+
 required:
   - compatible
   - reg