Document new device tree bindings for Maxim 77693 charger driver.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
---
Documentation/devicetree/bindings/mfd/max77693.txt | 46 ++++++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt
index 11921cc417bf..d0c3d787df12 100644
--- a/Documentation/devicetree/bindings/mfd/max77693.txt
+++ b/Documentation/devicetree/bindings/mfd/max77693.txt
@@ -27,6 +27,42 @@ Optional properties:
[*] refer Documentation/devicetree/bindings/regulator/regulator.txt
+- charger : Node configuring the charger driver.
+ If present, required properties:
+ - compatible : Must be "maxim,max77693-charger".
+
+ Optional properties (if not set, defaults will be used):
+ - maxim,constant-microvolt : Battery constant voltage in uV. The charger
+ will operate in fast charge constant current mode till battery voltage
+ reaches this level. Then the charger will switch to fast charge constant
+ voltage mode. Also vsys (system voltage) will be set to this value when
+ DC power is supplied but charger is not enabled.
+ Valid values: 3650000 - 4400000, step by 25000 (rounded down)
+ Default: 4200000
+
+ - maxim,min-system-microvolt : Minimal system voltage in uV.
+ Valid values: 3000000 - 3700000, step by 100000 (rounded down)
+ Default: 3600000
+
+ - maxim,thermal-regulation-celsius : Temperature in Celsius for entering
+ high temperature charging mode. If die temperature exceeds this value
+ the charging current will be reduced by 105 mA/Celsius.
+ Valid values: 70, 85, 100, 115
+ Default: 100
+
+ - maxim,battery-overcurrent-microamp : Overcurrent protection threshold
+ in uA (current from battery to system).
+ Valid values: 2000000 - 3500000, step by 250000 (rounded down)
+ Default: 3500000
+
+ - maxim,charge-input-threshold-microvolt : Threshold voltage in uV for
+ triggering input voltage regulation loop. If input voltage decreases
+ below this value, the input current will be reduced to reach the
+ threshold voltage.
+ Valid values: 4300000, 4700000, 4800000, 4900000
+ Default: 4300000
+
+
Example:
max77693@66 {
compatible = "maxim,max77693";
@@ -52,4 +88,14 @@ Example:
regulator-boot-on;
};
};
+
+ charger {
+ compatible = "maxim,max77693-charger";
+
+ maxim,constant-microvolt = <4200000>;
+ maxim,min-system-microvolt = <3600000>;
+ maxim,thermal-regulation-celsius = <75>;
+ maxim,battery-overcurrent-microamp = <3000000>;
+ maxim,charge-input-threshold-microvolt = <4300000>;
+ };
};
--
1.9.1
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