Hi Rob,
On Wed, 30 Oct 2019 at 22:38, Rob Herring <robh@xxxxxxxxxx> wrote:
>
> On Mon, Oct 28, 2019 at 03:18:57PM +0800, Baolin Wang wrote:
> > Since the battery internal resistance can be changed as the temperature
> > changes, thus add one table to describe the battery resistance percent
> > in different temperature to get a accurate battery internal resistance.
> >
> > Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
> > ---
> > .../devicetree/bindings/power/supply/battery.txt | 5 +++++
> > 1 file changed, 5 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/power/supply/battery.txt b/Documentation/devicetree/bindings/power/supply/battery.txt
> > index 5c913d4c..1a6f951 100644
> > --- a/Documentation/devicetree/bindings/power/supply/battery.txt
> > +++ b/Documentation/devicetree/bindings/power/supply/battery.txt
> > @@ -35,6 +35,10 @@ Optional Properties:
> > for each of the battery capacity lookup table. The first temperature value
> > specifies the OCV table 0, and the second temperature value specifies the
> > OCV table 1, and so on.
> > + - resistance-temp-table: An array providing the resistance percent and
> > + corresponding temperature in degree Celsius, which is used to look up the
> > + resistance percent according to current temperature to get a accurate
> > + batterty internal resistance.
>
> What's the order of values? The description and example don't seem to
> agree unless negative percent is a thing.
Ah, right. I will fix the example according to the description's order
in next version. Thanks.
> >
> > Battery properties are named, where possible, for the corresponding
> > elements in enum power_supply_property, defined in
> > @@ -61,6 +65,7 @@ Example:
> > ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>, ...;
> > ocv-capacity-table-1 = <4200000 100>, <4185000 95>, <4113000 90>, ...;
> > ocv-capacity-table-2 = <4250000 100>, <4200000 95>, <4185000 90>, ...;
> > + resistance-temp-table = <20 100>, <10 90>, <0 80>, <(-10) 60>;
> > };
> >
> > charger: charger@11 {
> > --
> > 1.7.9.5
> >
--
Baolin Wang
Best Regards
