STM32 I2C may be in a power domain which is the case for the STM32MP2x
based boards. Allow a single 'power-domains' entry for STM32 I2C.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
---
 Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
index 457bb0702ed9..64aaa0dfa8fa 100644
--- a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml
@@ -127,6 +127,9 @@ properties:
 
   wakeup-source: true
 
+  power-domains:
+    maxItems: 1
+
   access-controllers:
     minItems: 1
     maxItems: 2

-- 
2.34.1