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| author | Rasmus Villemoes <rasmus.villemoes@prevas.dk> | 2020-12-18 13:10:53 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-12-19 03:57:44 +0300 |
| commit | 320d159e2d63a97a40f24cd6dfda5a57eec65b91 (patch) | |
| tree | 1bb826d43d9357a9246c02eee38d9b37ecf3508d /Documentation | |
| parent | f70cc33029fca3cf62bffb15102ea42eb4d097ac (diff) | |
| download | linux-320d159e2d63a97a40f24cd6dfda5a57eec65b91.tar.xz | |
dt-bindings: rtc: add reset-source property
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@bootlin.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201218101054.25416-2-rasmus.villemoes@prevas.dk
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/rtc/rtc.yaml | 5 |
1 files changed, 5 insertions, 0 deletions
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 ... |