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

[Rob Herring <robh@xxxxxxxxxx>]

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@xxxxxxxxxx>
Cc: Maxime Ripard <maxime@xxxxxxxxxx>
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
---
FYI, there's 43 cases of this on arm32 in my testing.

 Documentation/devicetree/bindings/mfd/syscon.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/syscon.yaml b/Documentation/devicetree/bindings/mfd/syscon.yaml
index 19bdaf781853..af7a68051392 100644
--- 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
-- 
2.25.1