dt-bindings: mfd: Ensure 'syscon' has a more specific compatible

Using 'syscon' alone should be avoided as compatible strings should be
specific enough to identify the exact set of registers contained. Update
the schema to ensure at least 2 compatible strings are present.

Cc: Lee Jones <lee.jones@linaro.org>
Cc: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/mfd/syscon.yaml b/Documentation/devicetree/bindings/mfd/syscon.yaml
index 19bdaf781853b773d417685174679c46fff9c85e..af7a6805139292e7c60dd777407c5dc3b4056c14 100644 (file)
--- a/Documentation/devicetree/bindings/mfd/syscon.yaml
+++ b/Documentation/devicetree/bindings/mfd/syscon.yaml
@@ -43,7 +43,8 @@ properties:
 
       - contains:
           const: syscon
-        additionalItems: true
+        minItems: 2
+        maxItems: 4  # Should be enough
 
   reg:
     maxItems: 1