[PATCH 1/2] dt-bindings: watchdog: Add qemu,vm-watchdog compatible

From: Sebastian Ene
Date: Tue Apr 05 2022 - 20:50:43 EST


This watchdog can be used to detect stalls on vCPUs.

Signed-off-by: Sebastian Ene <sebastianene@xxxxxxxxxx>
---
.../devicetree/bindings/watchdog/vm-wdt.yaml | 44 +++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/vm-wdt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/vm-wdt.yaml b/Documentation/devicetree/bindings/watchdog/vm-wdt.yaml
new file mode 100644
index 000000000000..5365c963a7f6
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/vm-wdt.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/vm-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: VM watchdog
+
+allOf:
+ - $ref: "watchdog.yaml#"
+
+maintainers:
+ - Sebastian Ene <sebastianene@xxxxxxxxxx>
+
+properties:
+ compatible:
+ enum:
+ - qemu,vm-watchdog
+ clock:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ The watchdog internal clock measure in Hz used to decrement the
+ watchdog counter register on each tick.
+ Defaults to 10 if unset.
+ timeout-sec:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ The watchdog expiration timeout measured in seconds.
+ Defaults to 8 if unset.
+
+required:
+ - compatible
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ watchdog {
+ compatible = "qemu,vm-watchdog";
+ clock = <10>;
+ timeout-sec = <8>;
+ };
+
+...
--
2.35.1.1094.g7c7d902a7c-goog