From 1e22152aa59d793743fc53051dd7a042f362aecb Mon Sep 17 00:00:00 2001 From: Oleksij Rempel Date: Thu, 26 Oct 2023 16:48:24 +0200 Subject: regulator: Implement uv_survival_time for handling under-voltage events Add 'uv_survival_time' field to regulation_constraints for specifying survival time post critical under-voltage event. Update the regulator notifier call chain and Device Tree property parsing to use this new field, allowing a configurable timeout before emergency shutdown. Signed-off-by: Oleksij Rempel Link: https://lore.kernel.org/r/20231026144824.4065145-6-o.rempel@pengutronix.de Signed-off-by: Mark Brown --- include/linux/regulator/machine.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/linux/regulator') diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index e0ddfb5593c9..0cd76d264727 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -162,6 +162,13 @@ struct notification_limit { * regulator_active_discharge values are used for * initialisation. * @enable_time: Turn-on time of the rails (unit: microseconds) + * @uv_less_critical_window_ms: Specifies the time window (in milliseconds) + * following a critical under-voltage (UV) event + * during which less critical actions can be + * safely carried out by the system (for example + * logging). After this time window more critical + * actions should be done (for example prevent + * HW damage). */ struct regulation_constraints { @@ -213,6 +220,7 @@ struct regulation_constraints { unsigned int settling_time_up; unsigned int settling_time_down; unsigned int enable_time; + unsigned int uv_less_critical_window_ms; unsigned int active_discharge; -- cgit v1.2.3