linux-kernel - [PATCH v2 3/3] dt-bindings: mfd: max8998: Add charger subnode binding

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Date:   Sat, 14 Jul 2018 14:26:53 +0200
From:   Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
To:     lgirdwood@...il.com, broonie@...nel.org, sre@...nel.org,
        lee.jones@...aro.org, robh+dt@...nel.org, mark.rutland@....com
Cc:     linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org,
        Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
Subject: [PATCH v2 3/3] dt-bindings: mfd: max8998: Add charger subnode binding

This patch adds devicetree bindings documentation for
battery charging controller as the subnode of MAX8998 PMIC.

Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
---
Changes from v1:
  - Removed unneeded Fixes tag
  - Correct description of all charger values
  - Added missing property unit
---
 Documentation/devicetree/bindings/mfd/max8998.txt | 24 +++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/max8998.txt b/Documentation/devicetree/bindings/mfd/max8998.txt
index 23a3650ff2a2..196e50097a36 100644
--- a/Documentation/devicetree/bindings/mfd/max8998.txt
+++ b/Documentation/devicetree/bindings/mfd/max8998.txt
@@ -50,6 +50,23 @@ Additional properties required if max8998,pmic-buck2-dvs-gpio is defined:
 - max8998,pmic-buck2-dvs-voltage: An array of 2 voltage values in microvolts
   for buck2 regulator that can be selected using dvs gpio.
 
+Charger: Configuration for battery charging controller should be added
+inside a child node named 'charger'.
+  Required properties:
+  - max8998,charge-eoc-percent: Setup End of Charge Level.
+    If value equals 0, leave it unchanged.
+    Otherwise it should be value from 10 to 45 by 5 step.
+
+  - max8998,charge-restart-level-microvolt: Setup Charge Restart Level.
+    If value equals 0, leave it unchanged.
+    If value equals -1, it will be disabled.
+    Otherwise it should be one of following values: 100, 150, 200.
+
+  - max8998,charge-timeout-hours: Setup Charge Full Timeout.
+    If value equals 0, leave it unchanged.
+    If value equals -1, it will be disabled.
+    Otherwise it should be one of following values: 5, 6, 7.
+
 Regulators: All the regulators of MAX8998 to be instantiated shall be
 listed in a child node named 'regulators'. Each regulator is represented
 by a child node of the 'regulators' node.
@@ -99,6 +116,13 @@ Example:
 		max8998,pmic-buck2-dvs-gpio = <&gpx0 0 3 0 0>; /* SET3 */
 		max8998,pmic-buck2-dvs-voltage = <1350000>, <1300000>;
 
+		/* Charger configuration */
+		charger {
+			max8998,charge-eoc-percent = <0>;
+			max8998,charge-restart-level-microvolt = <(-1)>;
+			max8998,charge-timeout-hours = <7>;
+		};
+
 		/* Regulators to instantiate */
 		regulators {
 			ldo2_reg: LDO2 {
-- 
2.7.4