linux-kernel - [PATCH v3 6/7] regulator: dt-bindings: Add regulator-uv-survival-time-ms property

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Message-Id: <20231025084614.3092295-7-o.rempel@pengutronix.de>
Date:   Wed, 25 Oct 2023 10:46:13 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH v3 6/7] regulator: dt-bindings: Add regulator-uv-survival-time-ms property

Introduce a new Device Tree property 'regulator-uv-survival-time-ms' to
specify the survival time post a critical under-voltage event. This
property defines the time in milliseconds the system can operate before
the on-board capacitors fail, providing a window for necessary actions
or preparations to be taken before power loss, aligning with the
under-voltage event handling mechanism.

Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 Documentation/devicetree/bindings/regulator/regulator.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/regulator.yaml b/Documentation/devicetree/bindings/regulator/regulator.yaml
index 5b8d55f7c43b..85b8c51f8ede 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.yaml
+++ b/Documentation/devicetree/bindings/regulator/regulator.yaml
@@ -186,6 +186,13 @@ properties:
       be enabled but limit setting can be omitted. Limit is given as microvolt
       offset from voltage set to regulator.
 
+  regulator-uv-survival-time-ms:
+    description: Specifies the time (in milliseconds) the system can continue
+      to operate after a critical under-voltage event has been triggered,
+      before the on-board capacitors fail. This time essentially represents the
+      duration the system has to take any necessary actions or preparations
+      before power loss.
+
   regulator-temp-protection-kelvin:
     description: Set over temperature protection limit. This is a limit where
       hardware performs emergency shutdown. Zero can be passed to disable
-- 
2.39.2