linux-kernel - [PATCH v4 5/7] dt-bindings: power: supply: max17040: Add maxim,rcomp

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Date:   Mon,  7 Sep 2020 00:30:54 +0300
From:   Iskren Chernev <iskren.chernev@...il.com>
To:     Sebastian Reichel <sre@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Jonathan Bakker <xc-racer2@...e.ca>,
        Vladimir Barinov <vladimir.barinov@...entembedded.com>,
        Iskren Chernev <iskren.chernev@...il.com>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v4 5/7] dt-bindings: power: supply: max17040: Add maxim,rcomp

To compensate for the battery chemistry and operating conditions the
chips support a compensation value. Specify one or two byte compensation
via the maxim,rcomp byte array.

Signed-off-by: Iskren Chernev <iskren.chernev@...il.com>
Reviewed-by: Rob Herring <robh@...nel.org>
---
 .../devicetree/bindings/power/supply/max17040_battery.txt   | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/supply/max17040_battery.txt b/Documentation/devicetree/bindings/power/supply/max17040_battery.txt
index 554bce82a08e6..2cf046d12d922 100644
--- a/Documentation/devicetree/bindings/power/supply/max17040_battery.txt
+++ b/Documentation/devicetree/bindings/power/supply/max17040_battery.txt
@@ -17,6 +17,11 @@ Optional properties :
 				Specify this boolean property to divide the
 				reported value in 2 and thus normalize it.
 				SOC == State of Charge == Capacity.
+- maxim,rcomp :			A value to compensate readings for various
+				battery chemistries and operating temperatures.
+				max17040,41 have 2 byte rcomp, default to
+				0x97 0x00. All other devices have one byte
+				rcomp, default to 0x97.
 - interrupts : 			Interrupt line see Documentation/devicetree/
 				bindings/interrupt-controller/interrupts.txt
 - wakeup-source :		This device has wakeup capabilities. Use this
@@ -41,6 +46,7 @@ Example:
 	battery-fuel-gauge@36 {
 		compatible = "maxim,max17048";
 		reg = <0x36>;
+		maxim,rcomp = /bits/ 8 <0x56>;
 		maxim,alert-low-soc-level = <10>;
 		maxim,double-soc;
 	};
-- 
2.28.0