Convert the gpio-wdt bindings from text to YAML ones, to permit DT validation.
Signed-off-by: Marek Vasut <marex@xxxxxxx>
---
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Wim Van Sebroeck <wim@xxxxxxxxxxxxxxxxxx>
Cc: linux-watchdog@xxxxxxxxxxxxxxx
To: devicetree@xxxxxxxxxxxxxxx
---
V2: - Add missing required: properties
- Drop quotes around ref: referenced schema file name
---
NOTE: The Maintainer entry should likely be changed, although it seems
like this driver and its matching bindings are now unmaintained.
---
.../devicetree/bindings/watchdog/gpio-wdt.txt | 28 -----------
.../bindings/watchdog/linux,wdt-gpio.yaml | 47 +++++++++++++++++++
2 files changed, 47 insertions(+), 28 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/watchdog/gpio-wdt.txt
create mode 100644 Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml
diff --git a/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt b/Documentation/devicetree/bindings/watchdog/gpio-wdt.txt
deleted file mode 100644
index 198794963786b..0000000000000
--- 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/linux,wdt-gpio.yaml b/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml
new file mode 100644
index 0000000000000..ff0b0b241513c
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/linux,wdt-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: GPIO-controlled Watchdog
+
+maintainers:
+ - Marek Vasut <marex@xxxxxxx>
+
+properties:
+ compatible:
+ const: linux,wdt-gpio
+
+ gpios:
+ description: gpio connection to WDT reset pin
+ maxItems: 1
+
+ hw_algo:
+ description: The algorithm used by the driver.
+ enum: [ level, toggle ]
+
+ hw_margin_ms:
+ description: Maximum time to reset watchdog circuit (milliseconds).
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+ - compatible
+ - gpios
+ - hw_algo
+ - hw_margin_ms
+
+allOf:
+ - $ref: watchdog.yaml#
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ watchdog {
+ compatible = "linux,wdt-gpio";
+ gpios = <&gpio3 9 GPIO_ACTIVE_LOW>;
+ hw_algo = "toggle";
+ hw_margin_ms = <1600>;
+ };
--
2.35.1
