# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id:
http://devicetree.org/schemas/watchdog/qcom-wdt.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm Krait Processor Sub-system (KPSS) Watchdog timer
maintainers:
- Rajendra Nayak <quic_rjendra@quicinc.com>
properties:
$nodename:
pattern: "^(watchdog|timer)@[0-9a-f]+$"
compatible:
oneOf:
- items:
- enum:
- qcom,kpss-wdt-ipq4019
- qcom,apss-wdt-ipq5018
- qcom,apss-wdt-ipq5332
- qcom,apss-wdt-ipq5424
- qcom,apss-wdt-ipq9574
- qcom,apss-wdt-msm8226
- qcom,apss-wdt-msm8974
- qcom,apss-wdt-msm8994
- qcom,apss-wdt-qcm2290
- qcom,apss-wdt-qcs404
- qcom,apss-wdt-qcs615
- qcom,apss-wdt-qcs8300
- qcom,apss-wdt-sa8255p
- qcom,apss-wdt-sa8775p
- qcom,apss-wdt-sc7180
- qcom,apss-wdt-sc7280
- qcom,apss-wdt-sc8180x
- qcom,apss-wdt-sc8280xp
- qcom,apss-wdt-sdm845
- qcom,apss-wdt-sdx55
- qcom,apss-wdt-sdx65
- qcom,apss-wdt-sm6115
- qcom,apss-wdt-sm6350
- qcom,apss-wdt-sm8150
- qcom,apss-wdt-sm8250
- const: qcom,kpss-wdt
- const: qcom,kpss-wdt
deprecated: true
- items:
- const: qcom,scss-timer
- const: qcom,msm-timer
- items:
- enum:
- qcom,kpss-wdt-apq8064
- qcom,kpss-wdt-ipq8064
- qcom,kpss-wdt-mdm9615
- qcom,kpss-wdt-msm8960
- const: qcom,kpss-timer
- const: qcom,msm-timer
reg:
maxItems: 1
clocks:
maxItems: 1
clock-names:
items:
- const: sleep
clock-frequency:
description:
The frequency of the general purpose timer in Hz.
cpu-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Per-CPU offset used when the timer is accessed without the CPU remapping
facilities. The offset is cpu-offset + (0x10000 * cpu-nr).
interrupts:
minItems: 1
maxItems: 5
required:
- compatible
- reg
- clocks
allOf:
- $ref: watchdog.yaml#
- if:
properties:
compatible:
contains:
const: qcom,kpss-wdt
then:
properties:
clock-frequency: false
cpu-offset: false
interrupts:
minItems: 1
items:
- description: Bark
- description: Bite
else:
properties:
interrupts:
minItems: 3
items:
- description: Debug
- description: First general purpose timer
- description: Second general purpose timer
- description: First watchdog
- description: Second watchdog
required:
- clock-frequency
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
watchdog@17c10000 {
compatible = "qcom,apss-wdt-sm8150", "qcom,kpss-wdt";
reg = <0x17c10000 0x1000>;
clocks = <&sleep_clk>;
interrupts = <GIC_SPI 0 IRQ_TYPE_EDGE_RISING>;
timeout-sec = <10>;
};
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
watchdog@200a000 {
compatible = "qcom,kpss-wdt-ipq8064", "qcom,kpss-timer", "qcom,msm-timer";
interrupts = <GIC_PPI 1 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
<GIC_PPI 2 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
<GIC_PPI 3 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
<GIC_PPI 4 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>,
<GIC_PPI 5 (GIC_CPU_MASK_SIMPLE(2) | IRQ_TYPE_EDGE_RISING)>;
reg = <0x0200a000 0x100>;
clock-frequency = <25000000>;
clocks = <&sleep_clk>;
clock-names = "sleep";
cpu-offset = <0x80000>;
};
