Convert the DT binding for GPIO WDT to JSON schema.
Cc: luka.perkov@xxxxxxxxxx
Signed-off-by: Robert Marko <robert.marko@xxxxxxxxxx>
---
.../devicetree/bindings/watchdog/gpio-wdt.txt | 28 ----------
.../bindings/watchdog/gpio-wdt.yaml | 55 +++++++++++++++++++
2 files changed, 55 insertions(+), 28 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/watchdog/gpio-wdt.txt
create mode 100644 Documentation/devicetree/bindings/watchdog/gpio-wdt.yaml
diff --git a/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt b/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt
deleted file mode 100644
index 198794963786..000000000000
--- a/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt
+++ /dev/null
@@ -1,28 +0,0 @@
-* GPIO-controlled Watchdog
-
-Required Properties:
-- compatible: Should contain "linux,wdt-gpio".
-- gpios: From common gpio binding; gpio connection to WDT reset pin.
-- hw_algo: The algorithm used by the driver. Should be one of the
- following values:
- - toggle: Either a high-to-low or a low-to-high transition clears
- the WDT counter. The watchdog timer is disabled when GPIO is
- left floating or connected to a three-state buffer.
- - level: Low or high level starts counting WDT timeout,
- the opposite level disables the WDT. Active level is determined
- by the GPIO flags.
-- hw_margin_ms: Maximum time to reset watchdog circuit (milliseconds).
-
-Optional Properties:
-- always-running: If the watchdog timer cannot be disabled, add this flag to
- have the driver keep toggling the signal without a client. It will only cease
- to toggle the signal when the device is open and the timeout elapsed.
-
-Example:
- watchdog: watchdog {
- /* ADM706 */
- compatible = "linux,wdt-gpio";
- gpios = <&gpio3 9 GPIO_ACTIVE_LOW>;
- hw_algo = "toggle";
- hw_margin_ms = <1600>;
- };
diff --git a/Documentation/devicetree/bindings/watchdog/gpio-wdt.yaml b/Documentation/devicetree/bindings/watchdog/gpio-wdt.yaml
new file mode 100644
index 000000000000..155dc7965e9b
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/gpio-wdt.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/gpio-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: GPIO controlled watchdog
+
+maintainers:
+ - Robert Marko <robert.marko@xxxxxxxxxx>
+
+properties:
+ compatible:
+ const: linux,wdt-gpio
+
+ gpios:
+ maxItems: 1
+ description: GPIO connected to the WDT reset pin
+
+ hw_algo:
+ $ref: /schemas/types.yaml#/definitions/string
+ description: Algorithm used by the driver
+ oneOf:
+ - description:
+ Either a high-to-low or a low-to-high transition clears the WDT counter.
+ The watchdog timer is disabled when GPIO is left floating or connected
+ to a three-state buffer.
+ const: toggle
+ - description:
+ Low or high level starts counting WDT timeout, the opposite level
+ disables the WDT.
+ Active level is determined by the GPIO flags.
+ const: level
+
+ hw_margin_ms:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Maximum time to reset watchdog circuit (in milliseconds)
+ minimum: 2
+ maximum: 65535
+
+ always-running:
+ type: boolean
+ description:
+ If the watchdog timer cannot be disabled, add this flag to have the driver
+ keep toggling the signal without a client.
+ It will only cease to toggle the signal when the device is open and the
+ timeout elapsed.
+
+required:
+ - compatible
+ - gpios
+ - hw_algo
+ - hw_margin_ms
+
+unevaluatedProperties: false
--
2.38.1
