On Thu, Mar 23, 2017 at 3:20 AM, Sebastian Reichel <sre@xxxxxxxxxx> wrote: > Hi, > > On Mon, Mar 20, 2017 at 02:43:26AM -0700, Liam Breck wrote: >> From: Liam Breck <kernel@xxxxxxxxxxxxxxxxx> >> >> Documentation of static battery characteristics that can be defined >> for batteries which cannot self-identify. This information is required >> by fuel-gauge and charger chips for proper handling of the battery. >> >> Cc: Rob Herring <robh@xxxxxxxxxx> >> Cc: devicetree@xxxxxxxxxxxxxxx >> Signed-off-by: Matt Ranostay <matt@ranostay.consulting> >> Signed-off-by: Liam Breck <kernel@xxxxxxxxxxxxxxxxx> >> --- >> .../devicetree/bindings/power/supply/battery.txt | 43 ++++++++++++++++++++++ >> 1 file changed, 43 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/power/supply/battery.txt >> >> diff --git a/Documentation/devicetree/bindings/power/supply/battery.txt b/Documentation/devicetree/bindings/power/supply/battery.txt >> new file mode 100644 >> index 0000000..53a68c0 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/power/supply/battery.txt >> @@ -0,0 +1,43 @@ >> +Battery Characteristics >> + >> +The devicetree battery node provides static battery characteristics. >> +In smart batteries, these are typically stored in non-volatile memory >> +on a fuel gauge chip. The battery node should be used where there is >> +no appropriate non-volatile memory, or it is unprogrammed/incorrect. >> + >> +Required Properties: >> + - compatible: Must be "simple-battery" >> + >> +Optional Properties: >> + - voltage-min-design-microvolt: drained battery voltage >> + - energy-full-design-microwatt-hours: battery design energy >> + - charge-full-design-microamp-hours: battery design capacity >> + >> +Battery properties are named, where possible, for the corresponding >> +elements in enum power_supply_property, defined in >> +https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/linux/power_supply.h#n86 > > The above paragraph does not belong into DT bindings. Apart > from that How then should I indicate that there is a method to the madness of the above names? More information in the docs is helpful than less! > Acked-by: Sebastian Reichel <sre@xxxxxxxxxx> > > FYI: I will wait for Acked-by from Rob Herring on this patch. > > -- Sebastian > >> +Batteries must be referenced by chargers and/or fuel-gauges >> +using a phandle. The phandle's property should be named >> +"monitored-battery". >> + >> +Example: >> + >> + bat: battery { >> + compatible = "simple-battery"; >> + voltage-min-design-microvolt = <3200000>; >> + energy-full-design-microwatt-hours = <5290000>; >> + charge-full-design-microamp-hours = <1430000>; >> + }; >> + >> + charger: charger@11 { >> + .... >> + monitored-battery = <&bat>; >> + ... >> + }; >> + >> + fuel_gauge: fuel-gauge@22 { >> + .... >> + monitored-battery = <&bat>; >> + ... >> + }; >> -- >> 2.9.3 >> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
