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e21a77d8da
Convert the gpio-wdt bindings from text to YAML ones, to permit DT validation. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221107160338.27910-1-marex@denx.de [robh: add missing 'always-running'] Signed-off-by: Rob Herring <robh@kernel.org>
56 lines
1.2 KiB
YAML
56 lines
1.2 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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$id: http://devicetree.org/schemas/watchdog/linux,wdt-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: GPIO-controlled Watchdog
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maintainers:
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- Guenter Roeck <linux@roeck-us.net>
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properties:
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compatible:
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const: linux,wdt-gpio
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gpios:
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description: gpio connection to WDT reset pin
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maxItems: 1
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hw_algo:
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description: The algorithm used by the driver.
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enum: [ level, toggle ]
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hw_margin_ms:
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description: Maximum time to reset watchdog circuit (milliseconds).
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$ref: /schemas/types.yaml#/definitions/uint32
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always-running:
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type: boolean
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description:
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If the watchdog timer cannot be disabled, add this flag to have the driver
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keep toggling the signal without a client.
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It will only cease to toggle the signal when the device is open and the
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timeout elapsed.
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required:
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- compatible
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- gpios
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- hw_algo
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- hw_margin_ms
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allOf:
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- $ref: watchdog.yaml#
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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watchdog {
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compatible = "linux,wdt-gpio";
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gpios = <&gpio3 9 GPIO_ACTIVE_LOW>;
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hw_algo = "toggle";
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hw_margin_ms = <1600>;
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};
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