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Subject[PATCH 2/3] Documentation: devicetree: Add Richtek RT9455 bindings
Date
Signed-off-by: Anda-Maria Nicolae <anda-maria.nicolae@intel.com>
---
.../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
index 0000000..0580e24
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/rt9455_charger.txt
@@ -0,0 +1,46 @@
+Binding for Richtek rt9455 battery charger
+
+Required properties:
+- compatible: it should contain one of the following:
+ "richtek,rt9455".
+- reg: integer, i2c address of the device.
+- interrupt-parent: the phandle for the interrupt controller that
+ services interrupts for this device.
+- interrupts: interrupt mapping for GPIO IRQ, it should be
+ configured with IRQ_TYPE_LEVEL_LOW flag.
+- richtek,output-charge-current: integer, output current from the charger to the
+ battery, in uA.
+- 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 provided to consumer
+ devices, when the charger is in boost mode.
+
+Optional properties:
+- richtek,min-input-voltage-regulation: integer, input voltage level in uA, used 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 value drained by the
+ charger from the power source.
+
+Example:
+
+rt9455@22 {
+ compatible = "richtek,rt9455";
+ reg = <0x22>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+
+ 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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