The watchdog IP can generate pre-timeout interrupt and can be used as
a wake up source. Document both properties.

Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Christophe Roullier <redacted>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Yannick Fertre <yannick.fertre@foss.st.com>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-watchdog@vger.kernel.org
---
 .../devicetree/bindings/watchdog/st,stm32-iwdg.yaml         | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml b/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml
index 6b13bfc11e114..86bd39d508500 100644
--- a/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml
+++ b/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml

@@ -36,6 +36,12 @@ properties:
     minItems: 1
     maxItems: 2
 
+  interrupts:
+    maxItems: 1
+    description: Pre-timeout interrupt from the watchdog.
+
+  wakeup-source: true
+
 required:
   - compatible
   - reg

-- 
2.43.0