From: Sander Vanheule <sander@svanheule.net>
To: Wim Van Sebroeck <wim@linux-watchdog.org>,
Guenter Roeck <linux@roeck-us.net>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: Rustam Adilov <adilov@disroot.org>,
linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Sander Vanheule <sander@svanheule.net>
Subject: [PATCH v2 1/2] dt-bindings: watchdog: realtek,otto-wdt: Add fallback compatible
Date: Tue, 12 May 2026 22:48:53 +0200 [thread overview]
Message-ID: <20260512204854.8931-2-sander@svanheule.net> (raw)
In-Reply-To: <20260512204854.8931-1-sander@svanheule.net>
As all known hardware instantiations of this watchdog behave the same, a
fallback compatible can be added.
To remain compatible with existing single-compatible bindings, the
current compatibles are duplicated. New compatibles should only be added
to the list with fallback.
Signed-off-by: Sander Vanheule <sander@svanheule.net>
---
Changes since v1:
- Fix indendations
- Add deprecated property to old compatible
- Use two-part compatible in example
---
.../bindings/watchdog/realtek,otto-wdt.yaml | 22 ++++++++++++++-----
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/watchdog/realtek,otto-wdt.yaml b/Documentation/devicetree/bindings/watchdog/realtek,otto-wdt.yaml
index 1f5390a67cdb..e470e0fcbb2a 100644
--- a/Documentation/devicetree/bindings/watchdog/realtek,otto-wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/realtek,otto-wdt.yaml
@@ -25,11 +25,21 @@ allOf:
properties:
compatible:
- enum:
- - realtek,rtl8380-wdt
- - realtek,rtl8390-wdt
- - realtek,rtl9300-wdt
- - realtek,rtl9310-wdt
+ oneOf:
+ - items:
+ - enum:
+ - realtek,rtl8380-wdt
+ - realtek,rtl8390-wdt
+ - realtek,rtl9300-wdt
+ - realtek,rtl9310-wdt
+ - const: realtek,otto-wdt
+ # Legacy without fallback, do not extend
+ - deprecated: true
+ enum:
+ - realtek,rtl8380-wdt
+ - realtek,rtl8390-wdt
+ - realtek,rtl9300-wdt
+ - realtek,rtl9310-wdt
reg:
maxItems: 1
@@ -74,7 +84,7 @@ unevaluatedProperties: false
examples:
- |
watchdog: watchdog@3150 {
- compatible = "realtek,rtl8380-wdt";
+ compatible = "realtek,rtl8380-wdt", "realtek,otto-wdt";
reg = <0x3150 0xc>;
realtek,reset-mode = "soc";
--
2.54.0
next prev parent reply other threads:[~2026-05-12 20:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-12 20:48 [PATCH v2 0/2] watchdog: realtek-otto: add fallback compatible Sander Vanheule
2026-05-12 20:48 ` Sander Vanheule [this message]
2026-05-12 20:48 ` [PATCH v2 2/2] " Sander Vanheule
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