Signed-off-by: Anda-Maria Nicolae <[email protected]>
---
.../devicetree/bindings/power/rt9455_charger.txt | 46 ++++++++++++++++++++
1 file changed, 46 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power/rt9455_charger.txt
diff --git a/Documentation/devicetree/bindings/power/rt9455_charger.txt
b/Documentation/devicetree/bindings/power/rt9455_charger.txt
new file mode 100644
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+Binding for Richtek rt9455 battery charger
+
+Required properties:
+- compatible: Should contain one of the following:
+ * "richtek,rt9455"
+
+- reg: integer, i2c address of the device.
+- richtek,output-charge-current: integer, output current in uA, from the
+ charger to the battery.
+- richtek,end-of-charge-percentage: integer, percent of the output charge
current.
+ When the current in constant-voltage
phase drops
+ below output_charge_current x
end-of-charge-percentage,
+ charge is terminated.
+- richtek,battery-regulation-voltage: integer, maximum battery voltage in uV.
+- richtek,boost-output-voltage: integer, maximum voltage in uV,
provided to consumer
+ devices, when the charger is in boost
mode.
+
+Optional properties:
+- richtek,min-input-voltage-regulation: integer, input voltage threshold in
uA, used to
+ determine when to decrease voltage
level when
+ the over current of the input power
source occurs.
+ This prevents input voltage drop due to
insufficient
+ current provided by the power source.
+- richtek,avg-input-current-regulation: integer, input current in uA, the
charger should
+ drain from the power source.
+
+Example:
+
+rt9455@22 {
+ compatible = "richtek,rt9455";
+ reg = <0x22>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <0 1>;
+
+ interrupt-gpio = <&gpio1 0 1>;
+ reset-gpio = <&gpio1 1 1>;
+
+ richtek,output-charge-current = <500000>;
+ richtek,end-of-charge-percentage = <10>;
+ richtek,battery-regulation-voltage = <4200000>;
+ richtek,boost-output-voltage = <5050000>;
+
+ richtek,min-input-voltage-regulation = <4500000>;
+ richtek,avg-input-current-regulation = <500000>;
+};
--
1.7.9.5
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