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UPSTREAM: dt-bindings: power: Introduce one property to describe the battery resistance with temperature changes

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Since the battery internal resistance can be changed as the temperature
changes, thus add one table to describe the battery resistance percent
in different temperatures to get a accurate battery internal resistance.

bug: 146864653
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
(cherry picked from commit 9a056a879111f88149dad428e7cc4f85c87a62bc)
This commit is contained in:
Baolin Wang 2019-12-09 11:56:21 +08:00 • committed by Todd Kjos
commit 8244790b20
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/power/supply/battery.txt
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@ -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 temperature in degree Celsius
and corresponding battery internal resistance percent, which is used to look
up the resistance percent according to current temperature to get a accurate
batterty internal resistance in different temperatures.
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 {