linux-kernel - [PATCH 1/3] dt-bindings: watchdog: Restrict timeout-sec to one number

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Message-Id: <20251020-dt-bindings-watchdog-timeout-v1-1-d0f3235eb327@linaro.org>
Date: Mon, 20 Oct 2025 18:52:20 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Wim Van Sebroeck <wim@...ux-watchdog.org>, 
 Guenter Roeck <linux@...ck-us.net>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Lee Jones <lee@...nel.org>, 
 Matti Vaittinen <mazziesaccount@...il.com>
Cc: linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Timothy Pearson <tpearson@...torengineering.com>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 1/3] dt-bindings: watchdog: Restrict timeout-sec to one
 number

Linux kernel expects only one number for the watchdog timeout and the
type is an array (defined in property-units.yaml in DT schema), so
restrict the property.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 Documentation/devicetree/bindings/watchdog/watchdog.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/watchdog/watchdog.yaml b/Documentation/devicetree/bindings/watchdog/watchdog.yaml
index f0a584af1223..be0327f587eb 100644
--- a/Documentation/devicetree/bindings/watchdog/watchdog.yaml
+++ b/Documentation/devicetree/bindings/watchdog/watchdog.yaml
@@ -24,6 +24,7 @@ properties:
     pattern: "^(timer|watchdog)(@.*|-([0-9]|[1-9][0-9]+))?$"
 
   timeout-sec:
+    maxItems: 1
     description:
       Contains the watchdog timeout in seconds.
 

-- 
2.48.1