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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/misc/qemu,vcpu-stall-detector.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: VCPU stall detector
description:
This binding describes a CPU stall detector mechanism for virtual CPUs
which is accessed through MMIO.
maintainers:
- Sebastian Ene <sebastianene@google.com>
properties:
compatible:
enum:
- qemu,vcpu-stall-detector
reg:
maxItems: 1
clock-frequency:
$ref: /schemas/types.yaml#/definitions/uint32
description: |
The internal clock of the stall detector peripheral measure in Hz used
to decrement its internal counter register on each tick.
Defaults to 10 if unset.
default: 10
timeout-sec:
description: |
The stall detector expiration timeout measured in seconds.
Defaults to 8 if unset. Please note that it also takes into account the
time spent while the VCPU is not running.
default: 8
required:
- compatible
additionalProperties: false
examples:
- |
vmwdt@9030000 {
compatible = "qemu,vcpu-stall-detector";
reg = <0x9030000 0x10000>;
clock-frequency = <10>;
timeout-sec = <8>;
};
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