Some RTCs, e.g. the pcf2127, can be used as a hardware watchdog. But
if the reset pin is not actually wired up, the driver exposes a
watchdog device that doesn't actually work.
Provide a standard binding that can be used to indicate that a given
RTC can perform a reset of the machine, similar to wakeup-source.
Suggested-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@xxxxxxxxx>
---
Documentation/devicetree/bindings/rtc/rtc.yaml | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/rtc/rtc.yaml b/Documentation/devicetree/bindings/rtc/rtc.yaml
index 8acd2de3de3a..d30dc045aac6 100644
--- a/Documentation/devicetree/bindings/rtc/rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/rtc.yaml
@@ -63,6 +63,11 @@ properties:
description:
Enables wake up of host system on alarm.
+ reset-source:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ The RTC is able to reset the machine.
+
additionalProperties: true
...
--
2.23.0
