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devicetree: power/mfd: max77693: Document new bindings for charger

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Document new device tree bindings for Maxim 77693 charger driver.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2015-01-20 11:00:52 +01:00 committed by Sebastian Reichel
parent e02912855f
commit 97d1596614
1 changed files with 45 additions and 0 deletions
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45
Documentation/devicetree/bindings/mfd/max77693.txt
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@ -41,6 +41,41 @@ Optional properties:
To get more informations, please refer to documentaion.
[*] refer Documentation/devicetree/bindings/pwm/pwm.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";
@ -73,4 +108,14 @@ Example:
pwms = <&pwm 0 40000 0>;
pwm-names = "haptic";
};
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>;
};
};