On Thu, 26 Oct 2023 16:48:23 +0200, Oleksij Rempel wrote: > Introduces a new devicetree property to 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. > > Less Critical Actions: > - Logging the under-voltage event for later analysis. > - Saving less critical data that may be useful for diagnosing issues or > for audit purposes. > > More Critical Actions (post the less critical window): > - Initiating procedures to properly shutdown hardware to prevent damage. > > The 'regulator-uv-less-critical-window-ms' property is crucial for > conveying board-specific hardware characteristics, not for enforcing a > certain policy. The time window represented by this property is derived > from the physical attributes of the hardware like the capacity of > on-board capacitors, the power consumption of the components, and the > time needed to safely shut down hardware to prevent damage. These > attributes can significantly vary between different boards, making it a > board-specific property rather than a policy directive. > > By providing a precise representation of the time available for less > critical actions post an under-voltage event, this property enables the > kernel to make informed decisions on action prioritization, ensuring > that essential preventative measures are taken to avoid hardware damage > while also allowing for data capture and analysis. > > Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx> > --- > .../devicetree/bindings/regulator/regulator.yaml | 8 ++++++++ > 1 file changed, 8 insertions(+) > Acked-by: Rob Herring <robh@xxxxxxxxxx>
