Document used prefixes for input/output/storage voltages and currents. Signed-off-by: Michał Mirosław <mirq-li...@rere.qmqm.pl> --- Documentation/power/power_supply_class.rst | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/Documentation/power/power_supply_class.rst b/Documentation/power/power_supply_class.rst index 7b8c42f8b1de..c41b25aaa755 100644 --- a/Documentation/power/power_supply_class.rst +++ b/Documentation/power/power_supply_class.rst @@ -28,6 +28,12 @@ indication (including whether to use it at all) are fully controllable by user and/or specific machine defaults, per design principles of LED framework). +There are three defined points of measurement for the benefit of mobile and +UPS-like power supplies: INPUT (external power source), OUTPUT (power output +from the module), and unmarked (power flowing to/from a storage element, +eg. battery). Battery is viewed as a power source, so current flowing to +the battery (charging it) is shown negative. + Attributes/properties ~~~~~~~~~~~~~~~~~~~~~ -- 2.20.1
