47 lines
1.7 KiB
Plaintext
Executable file
47 lines
1.7 KiB
Plaintext
Executable file
Binding for Richtek rt9455 battery charger
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Required properties:
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- compatible: it should contain one of the following:
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"richtek,rt9455".
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- reg: integer, i2c address of the device.
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- interrupts: interrupt mapping for GPIO IRQ, it should be
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configured with IRQ_TYPE_LEVEL_LOW flag.
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- richtek,output-charge-current: integer, output current from the charger to the
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battery, in uA.
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- richtek,end-of-charge-percentage: integer, percent of the output charge current.
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When the current in constant-voltage phase drops
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below output_charge_current x end-of-charge-percentage,
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charge is terminated.
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- richtek,battery-regulation-voltage: integer, maximum battery voltage in uV.
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- richtek,boost-output-voltage: integer, maximum voltage provided to consumer
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devices, when the charger is in boost mode, in uV.
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Optional properties:
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- richtek,min-input-voltage-regulation: integer, input voltage level in uV, used to
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decrease voltage level when the over current
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of the input power source occurs.
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This prevents input voltage drop due to insufficient
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current provided by the power source.
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Default: 4500000 uV (4.5V)
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- richtek,avg-input-current-regulation: integer, input current value in uA drained by the
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charger from the power source.
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Default: 500000 uA (500mA)
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Example:
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rt9455@22 {
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compatible = "richtek,rt9455";
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reg = <0x22>;
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interrupt-parent = <&gpio1>;
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interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
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richtek,output-charge-current = <500000>;
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richtek,end-of-charge-percentage = <10>;
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richtek,battery-regulation-voltage = <4200000>;
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richtek,boost-output-voltage = <5050000>;
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richtek,min-input-voltage-regulation = <4500000>;
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richtek,avg-input-current-regulation = <500000>;
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};
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