1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
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, in uV.
Optional properties:
- richtek,min-input-voltage-regulation: integer, input voltage level in uV, 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.
Default: 4500000 uV (4.5V)
- richtek,avg-input-current-regulation: integer, input current value in uA drained by the
charger from the power source.
Default: 500000 uA (500mA)
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>;
};
|
