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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/watchdog/atmel,sama5d4-wdt.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Atmel SAMA5D4 Watchdog Timer (WDT) Controller8 9maintainers:10 - Eugen Hristev <eugen.hristev@microchip.com>11 12allOf:13 - $ref: watchdog.yaml#14 15properties:16 compatible:17 oneOf:18 - enum:19 - atmel,sama5d4-wdt20 - microchip,sam9x60-wdt21 - microchip,sama7g5-wdt22 - items:23 - const: microchip,sam9x7-wdt24 - const: microchip,sam9x60-wdt25 26 reg:27 maxItems: 128 29 interrupts:30 maxItems: 131 32 atmel,watchdog-type:33 $ref: /schemas/types.yaml#/definitions/string34 description: should be hardware or software.35 oneOf:36 - description:37 Enable watchdog fault reset. A watchdog fault triggers38 watchdog reset.39 const: hardware40 - description:41 Enable watchdog fault interrupt. A watchdog fault asserts42 watchdog interrupt.43 const: software44 default: hardware45 46 atmel,idle-halt:47 $ref: /schemas/types.yaml#/definitions/flag48 description: |49 present if you want to stop the watchdog when the CPU is in idle state.50 CAUTION: This property should be used with care, it actually makes the51 watchdog not counting when the CPU is in idle state, therefore the52 watchdog reset time depends on mean CPU usage and will not reset at all53 if the CPU stop working while it is in idle state, which is probably54 not what you want.55 56 atmel,dbg-halt:57 $ref: /schemas/types.yaml#/definitions/flag58 description: |59 present if you want to stop the watchdog when the CPU is in debug state.60 61required:62 - compatible63 - reg64 65unevaluatedProperties: false66 67examples:68 - |69 #include <dt-bindings/interrupt-controller/irq.h>70 71 watchdog@fc068640 {72 compatible = "atmel,sama5d4-wdt";73 reg = <0xfc068640 0x10>;74 interrupts = <4 IRQ_TYPE_LEVEL_HIGH 5>;75 timeout-sec = <10>;76 atmel,watchdog-type = "hardware";77 atmel,dbg-halt;78 atmel,idle-halt;79 };80 81...82