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[v3,1/5] dt-bindings: power: Introduce one property to describe the battery resistance with temperature changes

Message ID d5024f1e017542c43d2f2f421a12daa9c2b9bf2c.1575863274.git.baolin.wang7@gmail.com (mailing list archive)
State Not Applicable, archived
Headers show
Series Improve the SC27XX fuel gauge controller | expand

Commit Message

Baolin Wang Dec. 9, 2019, 3:56 a.m. UTC 
From: Baolin Wang <baolin.wang@linaro.org>

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.

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>
---
 .../devicetree/bindings/power/supply/battery.txt   |    5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/power/supply/battery.txt b/Documentation/devicetree/bindings/power/supply/battery.txt
index 5c913d4c..3049cf8 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 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 {