linux-kernel - [PATCH] dt-bindings: watchdog: Convert TI OMAP to DT schema

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Message-ID: <20251013213136.693752-1-robh@kernel.org>
Date: Mon, 13 Oct 2025 16:31:35 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Wim Van Sebroeck <wim@...ux-watchdog.org>,
	Guenter Roeck <linux@...ck-us.net>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Aaro Koskinen <aaro.koskinen@....fi>
Cc: linux-watchdog@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: watchdog: Convert TI OMAP to DT schema

Convert the TI OMAP watchdog binding to DT schema format. The compatible
string list was incomplete. The "reg" and "interrupts" properties were
missing. "ti,hwmods" is also deprecated and not required.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 .../devicetree/bindings/watchdog/omap-wdt.txt | 15 ------
 .../bindings/watchdog/ti,omap2-wdt.yaml       | 51 +++++++++++++++++++
 2 files changed, 51 insertions(+), 15 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/watchdog/omap-wdt.txt
 create mode 100644 Documentation/devicetree/bindings/watchdog/ti,omap2-wdt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/omap-wdt.txt b/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
deleted file mode 100644
index 1fa20e453a2d..000000000000
--- a/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-TI Watchdog Timer (WDT) Controller for OMAP
-
-Required properties:
-- compatible : "ti,omap3-wdt" for OMAP3 or "ti,omap4-wdt" for OMAP4
-- ti,hwmods : Name of the hwmod associated to the WDT
-
-Optional properties:
-- timeout-sec : default watchdog timeout in seconds
-
-Examples:
-
-wdt2: wdt@...14000 {
-	compatible = "ti,omap4-wdt", "ti,omap3-wdt";
-	ti,hwmods = "wd_timer2";
-};
diff --git a/Documentation/devicetree/bindings/watchdog/ti,omap2-wdt.yaml b/Documentation/devicetree/bindings/watchdog/ti,omap2-wdt.yaml
new file mode 100644
index 000000000000..693ea272185a
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/ti,omap2-wdt.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/ti,omap2-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI OMAP Watchdog Timer Controller
+
+maintainers:
+  - Aaro Koskinen <aaro.koskinen@....fi>
+  
+allOf:
+  - $ref: watchdog.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - ti,omap2-wdt
+          - ti,omap3-wdt
+      - items:
+          - enum:
+              - ti,am4372-wdt
+              - ti,omap4-wdt
+              - ti,omap5-wdt
+          - const: ti,omap3-wdt
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  ti,hwmods:
+    description: Name of the hardware module associated with the watchdog.
+    $ref: /schemas/types.yaml#/definitions/string
+    deprecated: true
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    watchdog@...14000 {
+        compatible = "ti,omap3-wdt";
+        reg = <0x48314000 0x80>;
+        ti,hwmods = "wd_timer2";
+    };
-- 
2.51.0