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dt-bindings: watchdog: sama5d4-wdt: convert to yaml 

Convert the old txt binding to yaml format.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210527100120.266796-1-eugen.hristev@microchip.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Eugen Hristev 2021-05-27 13:01:18 +03:00 committed by Wim Van Sebroeck
parent 6da96e6e92
commit 13b191692d
2 changed files with 73 additions and 34 deletions
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73
Documentation/devicetree/bindings/watchdog/atmel,sama5d4-wdt.yaml Normal file
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# 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:
enum:
- atmel,sama5d4-wdt
- microchip,sam9x60-wdt
reg:
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;
};
...

34
Documentation/devicetree/bindings/watchdog/atmel-sama5d4-wdt.txt
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* Atmel SAMA5D4 Watchdog Timer (WDT) Controller
Required properties:
- compatible: "atmel,sama5d4-wdt" or "microchip,sam9x60-wdt"
- reg: base physical address and length of memory mapped region.
Optional properties:
- timeout-sec: watchdog timeout value (in seconds).
- interrupts: interrupt number to the CPU.
- atmel,watchdog-type: should be "hardware" or "software".
"hardware": enable watchdog fault reset. A watchdog fault triggers
watchdog reset.
"software": enable watchdog fault interrupt. A watchdog fault asserts
watchdog interrupt.
- atmel,idle-halt: 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: present if you want to stop the watchdog when the CPU is
in debug state.
Example:
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;
};