73969c3c5f
Add snapshot of bindings for qcom waatchdogs from qcom-6.1
commit 9dd5d1fa1 ("Merge "ARM: dts: msm: Add phandle for default CMA
area"").
Change-Id: I80da4682d786147f81fff34b84bb5c6a9c47f445
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
61 lines
1.5 KiB
YAML
61 lines
1.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/bindings/arm/msm/qcom,msm-watchdog.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Qualcomm Technologies, Inc. MSM Watchdog
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maintainers:
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- Prakruthi Deepak Heragu <quic_pheragu@quicinc.com>
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description: |+
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Watchdog timer is configured with a bark and a bite time.
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If the watchdog is not "pet" at regular intervals, the system
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is assumed to have become non responsive and needs to be reset.
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A warning in the form of a bark timeout leads to a bark interrupt
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and a kernel panic. If the watchdog timer is still not reset,
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a bite timeout occurs, which is an interrupt in the secure mode,
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which leads to a reset of the SOC via the secure watchdog. The
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driver needs the petting time, and the bark timeout to be programmed
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into the watchdog, as well as the bark and bite irqs.
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The device tree parameters for the watchdog are:
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properties:
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compatible:
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items:
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- const: qcom,msm-watchdog
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reg:
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minItems: 1
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reg-names:
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items:
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- const: wdt-base
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- const: wdt-absent-base
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minItems: 1
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interrupts:
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minItems: 2
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maxItems: 2
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required:
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- compatible
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- reg
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- reg-names
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- interrupts
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additionalProperites: false
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example:
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- |
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wdog: qcom,wdt@17c10000{
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compatible = "qcom,msm-watchdog";
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reg = <0x17c10000 0x1000>;
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reg-names = "wdt-base";
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interrupts = <0 0 IRQ_TYPE_LEVEL_HIGH>,
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<0 1 IRQ_TYPE_LEVEL_HIGH>;
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};
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...
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