| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/watchdog/atmel,sama5d4-wdt.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Atmel SAMA5D4 Watchdog Timer (WDT) Controller |
| |
| maintainers: |
| - Eugen Hristev <eugen.hristev@microchip.com> |
| |
| allOf: |
| - $ref: watchdog.yaml# |
| |
| properties: |
| compatible: |
| oneOf: |
| - enum: |
| - atmel,sama5d4-wdt |
| - microchip,sam9x60-wdt |
| - microchip,sama7g5-wdt |
| - items: |
| - const: microchip,sam9x7-wdt |
| - const: microchip,sam9x60-wdt |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| maxItems: 1 |
| |
| atmel,watchdog-type: |
| $ref: /schemas/types.yaml#/definitions/string |
| description: should be hardware or software. |
| oneOf: |
| - description: |
| Enable watchdog fault reset. A watchdog fault triggers |
| watchdog reset. |
| const: hardware |
| - description: |
| Enable watchdog fault interrupt. A watchdog fault asserts |
| watchdog interrupt. |
| const: software |
| default: hardware |
| |
| atmel,idle-halt: |
| $ref: /schemas/types.yaml#/definitions/flag |
| description: | |
| present if you want to stop the watchdog when the CPU is in idle state. |
| CAUTION: This property should be used with care, it actually makes the |
| watchdog not counting when the CPU is in idle state, therefore the |
| watchdog reset time depends on mean CPU usage and will not reset at all |
| if the CPU stop working while it is in idle state, which is probably |
| not what you want. |
| |
| atmel,dbg-halt: |
| $ref: /schemas/types.yaml#/definitions/flag |
| description: | |
| present if you want to stop the watchdog when the CPU is in debug state. |
| |
| required: |
| - compatible |
| - reg |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/irq.h> |
| |
| watchdog@fc068640 { |
| compatible = "atmel,sama5d4-wdt"; |
| reg = <0xfc068640 0x10>; |
| interrupts = <4 IRQ_TYPE_LEVEL_HIGH 5>; |
| timeout-sec = <10>; |
| atmel,watchdog-type = "hardware"; |
| atmel,dbg-halt; |
| atmel,idle-halt; |
| }; |
| |
| ... |
