linux-kernel - [PATCH] dt-bindings: watchdog: Convert marvell,armada-3700-wdt to DT schema

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Message-ID: <20250812203301.726374-1-robh@kernel.org>
Date: Tue, 12 Aug 2025 15:32:57 -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>,
	Marek Behún <kabel@...nel.org>
Cc: linux-watchdog@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: watchdog: Convert marvell,armada-3700-wdt to DT schema

Convert the Marvell Armada 3700 watchdog binding to DT schema format.
It's a straight-forward conversion.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 .../bindings/watchdog/armada-37xx-wdt.txt     | 23 -----------
 .../watchdog/marvell,armada-3700-wdt.yaml     | 41 +++++++++++++++++++
 MAINTAINERS                                   |  2 +-
 3 files changed, 42 insertions(+), 24 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
 create mode 100644 Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt b/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
deleted file mode 100644
index a8d00c31a1d8..000000000000
--- a/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-* Armada 37xx CPU Watchdog Timer Controller
-
-Required properties:
-- compatible : must be "marvell,armada-3700-wdt"
-- reg : base physical address of the controller and length of memory mapped
-	region.
-- clocks : the clock feeding the watchdog timer. See clock-bindings.txt
-- marvell,system-controller : reference to syscon node for the CPU Miscellaneous
-	Registers
-
-Example:
-
-	cpu_misc: system-controller@...0 {
-		compatible = "marvell,armada-3700-cpu-misc", "syscon";
-		reg = <0xd000 0x1000>;
-	};
-
-	wdt: watchdog@...0 {
-		compatible = "marvell,armada-3700-wdt";
-		reg = <0x8300 0x40>;
-		marvell,system-controller = <&cpu_misc>;
-		clocks = <&xtalclk>;
-	};
diff --git a/Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml b/Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml
new file mode 100644
index 000000000000..60d44d642fb5
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/marvell,armada-3700-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Armada 37xx CPU Watchdog Timer Controller
+
+maintainers:
+  - Marek Behún <kabel@...nel.org>
+
+properties:
+  compatible:
+    const: marvell,armada-3700-wdt
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  marvell,system-controller:
+    description: Reference to syscon node for the CPU Miscellaneous Registers
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - marvell,system-controller
+
+additionalProperties: false
+
+examples:
+  - |
+    watchdog@...0 {
+        compatible = "marvell,armada-3700-wdt";
+        reg = <0x8300 0x40>;
+        marvell,system-controller = <&cpu_misc>;
+        clocks = <&xtalclk>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 06a4cde222bd..6a2de9638c08 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2623,7 +2623,7 @@ F:	Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt
 F:	Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml
 F:	Documentation/devicetree/bindings/interrupt-controller/marvell,mpic.yaml
 F:	Documentation/devicetree/bindings/leds/cznic,turris-omnia-leds.yaml
-F:	Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
+F:	Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml
 F:	drivers/bus/moxtet.c
 F:	drivers/firmware/turris-mox-rwtm.c
 F:	drivers/gpio/gpio-moxtet.c
-- 
2.47.2