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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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dt-bindings: watchdog: Convert GPIO binding to json-schema

Convert the DT binding for GPIO WDT to JSON schema.

Cc: luka.perkov@sartura.hr
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20221125112904.48652-1-robert.marko@sartura.hr
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

authored by

Robert Marko and committed by
Wim Van Sebroeck 71708daa 7bfd2747

+55
+55
Documentation/devicetree/bindings/watchdog/gpio-wdt.yaml
··· 1 + # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 + %YAML 1.2 3 + --- 4 + $id: http://devicetree.org/schemas/watchdog/gpio-wdt.yaml# 5 + $schema: http://devicetree.org/meta-schemas/core.yaml# 6 + 7 + title: GPIO controlled watchdog 8 + 9 + maintainers: 10 + - Robert Marko <robert.marko@sartura.hr> 11 + 12 + properties: 13 + compatible: 14 + const: linux,wdt-gpio 15 + 16 + gpios: 17 + maxItems: 1 18 + description: GPIO connected to the WDT reset pin 19 + 20 + hw_algo: 21 + $ref: /schemas/types.yaml#/definitions/string 22 + description: Algorithm used by the driver 23 + oneOf: 24 + - description: 25 + Either a high-to-low or a low-to-high transition clears the WDT counter. 26 + The watchdog timer is disabled when GPIO is left floating or connected 27 + to a three-state buffer. 28 + const: toggle 29 + - description: 30 + Low or high level starts counting WDT timeout, the opposite level 31 + disables the WDT. 32 + Active level is determined by the GPIO flags. 33 + const: level 34 + 35 + hw_margin_ms: 36 + $ref: /schemas/types.yaml#/definitions/uint32 37 + description: Maximum time to reset watchdog circuit (in milliseconds) 38 + minimum: 2 39 + maximum: 65535 40 + 41 + always-running: 42 + type: boolean 43 + description: 44 + If the watchdog timer cannot be disabled, add this flag to have the driver 45 + keep toggling the signal without a client. 46 + It will only cease to toggle the signal when the device is open and the 47 + timeout elapsed. 48 + 49 + required: 50 + - compatible 51 + - gpios 52 + - hw_algo 53 + - hw_margin_ms 54 + 55 + unevaluatedProperties: false