[PATCH] dt-bindings: watchdog: arm,sp805: reference the PrimeCell binding

[PATCH] dt-bindings: watchdog: arm,sp805: reference the PrimeCell binding

[David Yang]

Unlike the other PrimeCell bindings, the binding ends in
unevaluatedProperties: false without referencing
/schemas/arm/primecell.yaml#, so arm,primecell-periphid is not an
evaluated property on an arm,sp805 node. Two nodes in the tree carry
that property regardless -- watchdog@a2c000 in hisi-x5hd2.dtsi and
watchdog@8000 in mps2.dtsi.

`make CHECK_DTBS=y`:

  watchdog@a2c000 (arm,sp805): Unevaluated properties are not allowed
  ('arm,primecell-periphid' was unexpected)

Add the reference so the property becomes evaluable; both nodes then
validate.

Fixes: 73d3e43f9813 ("dt-bindings: watchdog: sp-805: Convert to Json-schema")
Signed-off-by: David Yang <mmyangfl@gmail.com>
---
 Documentation/devicetree/bindings/watchdog/arm,sp805.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/watchdog/arm,sp805.yaml b/Documentation/devicetree/bindings/watchdog/arm,sp805.yaml
index bd7c09ed1938..690456839fcc 100644
--- a/Documentation/devicetree/bindings/watchdog/arm,sp805.yaml
+++ b/Documentation/devicetree/bindings/watchdog/arm,sp805.yaml
@@ -16,6 +16,7 @@ description: |+
 
 allOf:
   - $ref: /schemas/watchdog/watchdog.yaml#
+  - $ref: /schemas/arm/primecell.yaml#
 
 # Need a custom select here or 'arm,primecell' will match on lots of nodes
 select:
-- 
2.53.0