Hi, On Tue, Jan 24, 2017 at 11:56:33AM -0800, Liam Breck wrote: > On Sun, Jan 22, 2017 at 2:22 PM, Liam Breck <liam@xxxxxxxxxxxxxxxxx> wrote: > > I think Matt meant the following :-) > > > > Note: nominal-microvolt is not the correct term for termination voltage. > > Changed to termination-microvolt > > --- > > > > Documentation on battery properties that can be defined for > > fine tuning fuel gauge state machines. > > > > From: Matt Ranostay <matt@ranostay.consulting> > > Cc: Rob Herring <robh@xxxxxxxxxx> > > Cc: devicetree@xxxxxxxxxxxxxxx > > Signed-off-by: Matt Ranostay <matt@ranostay.consulting> > > --- > > .../devicetree/bindings/power/supply/battery.txt | 34 ++++++++++++++++++++++ > > 1 file changed, 34 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 000000000000..398b4d622883 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/power/supply/battery.txt > > @@ -0,0 +1,34 @@ > > +Battery Characteristics > > + > > +Required Properties: > > + - compatible: Must be "fixed-battery" > > + > > +Optional Properties: > > + - termination-microvolt: dead battery voltage > > + - design-microwatt-hours: battery design energy > > + - design-microamp-hours: battery design capacity > > > Two more battery characteristics should be included. Battery chargers > need them (for instance, BQ24190). > > - precharge-microamps: maximum charge current during precharge > phase (typically 20% of battery capacity) > > - termination-microamps: a charge cycle terminates when the > battery voltage is above recharge threshold, and the current is below > this setting (typically 10% of battery capacity) I guess quite a few battery characteristics could be added. Let's do this once we have a user for them. > Perhaps termination-microvolt should be called terminal-microvolt or > similar to avoid confusion. > > Sebastian, did you want to include the other fields from your example? Let's add properties once we have users for them. I just used the stuff printed on my Nokia N900's battery as an example :) I guess chemistry-type may actually be useful already. I think at least some bq27xxx chips would also work with LiPo based batteries. -- Sebastian
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