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 <[email protected]> Signed-off-by: Rasmus Villemoes <[email protected]> --- 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 ee237b2ed66a..b5e24dc24b0b 100644 --- a/Documentation/devicetree/bindings/rtc/rtc.yaml +++ b/Documentation/devicetree/bindings/rtc/rtc.yaml @@ -47,4 +47,9 @@ 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. + ... -- 2.23.0
