linux-kernel - [PATCH v5 1/6] dt-bindings: power: Introduce one property to present the battery internal resistance

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Date:   Fri, 19 Oct 2018 18:53:10 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     sre@...nel.org, robh+dt@...nel.org, mark.rutland@....com
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, yuanjiang.yu@...soc.com,
        baolin.wang@...aro.org, broonie@...nel.org, ctatlor97@...il.com,
        linus.walleij@...aro.org
Subject: [PATCH v5 1/6] dt-bindings: power: Introduce one property to present the battery internal resistance

The internal resistance of a battery is not a constant in its life cycle,
this varies over the age of the battery or temperature and so on. But we
just want use one constant battery internal resistance to estimate the
battery capacity. Thus this patch introduces one property to present
the battery factory internal resistance for battery information.

Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
---
Changes from v4:
 - None.

Changes from v3:
 - Split binding into one separate patch.
 - Add LinusW reviewed tag.

Changes from v2:
 - Rename the property.
 - Improve the commit message.

Changes from v1:
 - New patch in v2.
---
 .../devicetree/bindings/power/supply/battery.txt   |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/supply/battery.txt b/Documentation/devicetree/bindings/power/supply/battery.txt
index f4d3b4a..938d027 100644
--- a/Documentation/devicetree/bindings/power/supply/battery.txt
+++ b/Documentation/devicetree/bindings/power/supply/battery.txt
@@ -22,6 +22,7 @@ Optional Properties:
  - charge-term-current-microamp: current for charge termination phase
  - constant-charge-current-max-microamp: maximum constant input current
  - constant-charge-voltage-max-microvolt: maximum constant input voltage
+ - factory-internal-resistance-micro-ohms: battery factory internal resistance
 
 Battery properties are named, where possible, for the corresponding
 elements in enum power_supply_property, defined in
@@ -42,6 +43,7 @@ Example:
 		charge-term-current-microamp = <128000>;
 		constant-charge-current-max-microamp = <900000>;
 		constant-charge-voltage-max-microvolt = <4200000>;
+		factory-internal-resistance-micro-ohms = <250000>;
 	};
 
 	charger: charger@11 {
-- 
1.7.9.5