[PATCH 1/2] dt-bindings: watchdog: add reset-from-wdt-gpios binding

[Steffen Trumtrar]

A wdt-gpio can buffer the reset signal over the reboot, to signal that the
reset was issued by the watchdog.

Add support for a new gpio 'reset-from-wdt-gpios' that allows reading this
buffered value.

Signed-off-by: Steffen Trumtrar <s.trumtrar@xxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml b/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml
index 499f1b7e03f96..b9b64f938daa7 100644
--- a/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml
+++ b/Documentation/devicetree/bindings/watchdog/linux,wdt-gpio.yaml
@@ -46,6 +46,11 @@ properties:
       It will only cease to toggle the signal when the device is open and the
       timeout elapsed.
 
+  reset-from-wdt-gpios:
+    description:
+      gpio connection that signals, that the last reset was issued by this watchdog.
+    maxItems: 1
+
 required:
   - compatible
   - gpios

-- 
2.52.0