linux-kernel - [PATCH v3 1/2] dt-bindings: watchdog: Add NXP Software Watchdog Timer

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Message-ID: <20250407160318.936142-2-daniel.lezcano@linaro.org>
Date: Mon,  7 Apr 2025 18:03:16 +0200
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: wim@...ux-watchdog.org
Cc: linux@...ck-us.net,
	linux-watchdog@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	S32@....com,
	ghennadi.procopciuc@....com,
	thomas.fossati@...aro.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org
Subject: [PATCH v3 1/2] dt-bindings: watchdog: Add NXP Software Watchdog Timer

Describe the Software Watchdog Timer available on the S32G platforms.

Cc: Ghennadi Procopciuc <ghennadi.procopciuc@....com>
Cc: Thomas Fossati <thomas.fossati@...aro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 .../bindings/watchdog/nxp,s32g2-swt.yaml      | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/watchdog/nxp,s32g2-swt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/nxp,s32g2-swt.yaml b/Documentation/devicetree/bindings/watchdog/nxp,s32g2-swt.yaml
new file mode 100644
index 000000000000..48ba9e9979ee
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/nxp,s32g2-swt.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/nxp,s32g2-swt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP Software Watchdog Timer (SWT)
+
+maintainers:
+  - Daniel Lezcano <daniel.lezcano@...nel.org>
+
+allOf:
+  - $ref: watchdog.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: nxp,s32g2-swt
+      - items:
+          - const: nxp,s32g3-swt
+          - const: nxp,s32g2-swt
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Counter clock
+      - description: Module clock
+      - description: Register clock
+    minItems: 1
+
+  clock-names:
+    items:
+      - const: counter
+      - const: module
+      - const: register
+    minItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    watchdog@...00000 {
+        compatible = "nxp,s32g2-swt";
+        reg = <0x40100000 0x1000>;
+        clocks = <&clks 0x3a>, <&clks 0x3b>;
+        clock-names = "counter", "module";
+        timeout-sec = <10>;
+    };
-- 
2.43.0