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.
>
> 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
>
