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46 lines
1.7 KiB
46 lines
1.7 KiB
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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