2021-05-27 03:01:18 -07:00
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# 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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$id: http://devicetree.org/schemas/watchdog/atmel,sama5d4-wdt.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Atmel SAMA5D4 Watchdog Timer (WDT) Controller
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maintainers:
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- Eugen Hristev <eugen.hristev@microchip.com>
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allOf:
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2023-03-17 16:36:42 -07:00
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- $ref: watchdog.yaml#
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2021-05-27 03:01:18 -07:00
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properties:
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compatible:
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2024-02-23 10:26:27 -07:00
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oneOf:
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- enum:
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- atmel,sama5d4-wdt
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- microchip,sam9x60-wdt
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- microchip,sama7g5-wdt
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- items:
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- const: microchip,sam9x7-wdt
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- const: microchip,sam9x60-wdt
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2021-05-27 03:01:18 -07:00
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reg:
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maxItems: 1
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2021-12-06 10:40:45 -07:00
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interrupts:
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maxItems: 1
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2021-05-27 03:01:18 -07:00
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atmel,watchdog-type:
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$ref: /schemas/types.yaml#/definitions/string
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description: should be hardware or software.
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oneOf:
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- description:
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Enable watchdog fault reset. A watchdog fault triggers
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watchdog reset.
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const: hardware
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- description:
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Enable watchdog fault interrupt. A watchdog fault asserts
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watchdog interrupt.
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const: software
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default: hardware
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atmel,idle-halt:
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$ref: /schemas/types.yaml#/definitions/flag
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description: |
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present if you want to stop the watchdog when the CPU is in idle state.
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CAUTION: This property should be used with care, it actually makes the
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watchdog not counting when the CPU is in idle state, therefore the
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watchdog reset time depends on mean CPU usage and will not reset at all
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if the CPU stop working while it is in idle state, which is probably
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not what you want.
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atmel,dbg-halt:
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$ref: /schemas/types.yaml#/definitions/flag
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description: |
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present if you want to stop the watchdog when the CPU is in debug state.
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required:
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- compatible
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- reg
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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watchdog@fc068640 {
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2023-04-15 02:51:08 -07:00
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compatible = "atmel,sama5d4-wdt";
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reg = <0xfc068640 0x10>;
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interrupts = <4 IRQ_TYPE_LEVEL_HIGH 5>;
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timeout-sec = <10>;
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atmel,watchdog-type = "hardware";
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atmel,dbg-halt;
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atmel,idle-halt;
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2021-05-27 03:01:18 -07:00
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};
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...
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