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Documentation / devicetree / bindings / power / rt9455_charger.txt


Based on kernel version 4.8. Page generated on 2016-10-06 23:13 EST.

1	Binding for Richtek rt9455 battery charger
2	
3	Required properties:
4	- compatible:				it should contain one of the following:
5						"richtek,rt9455".
6	- reg:					integer, i2c address of the device.
7	- interrupt-parent:			the phandle for the interrupt controller that
8						services interrupts for this device.
9	- interrupts:				interrupt mapping for GPIO IRQ, it should be
10						configured with IRQ_TYPE_LEVEL_LOW flag.
11	- richtek,output-charge-current:	integer, output current from the charger to the
12						battery, in uA.
13	- richtek,end-of-charge-percentage:	integer, percent of the output charge current.
14						When the current in constant-voltage phase drops
15						below output_charge_current x end-of-charge-percentage,
16						charge is terminated.
17	- richtek,battery-regulation-voltage:	integer, maximum battery voltage in uV.
18	- richtek,boost-output-voltage:		integer, maximum voltage provided to consumer
19						devices, when the charger is in boost mode, in uV.
20	
21	Optional properties:
22	- richtek,min-input-voltage-regulation: integer, input voltage level in uV, used to
23						decrease voltage level when the over current
24						of the input power source occurs.
25						This prevents input voltage drop due to insufficient
26						current provided by the power source.
27						Default: 4500000 uV (4.5V)
28	- richtek,avg-input-current-regulation: integer, input current value in uA drained by the
29						charger from the power source.
30						Default: 500000 uA (500mA)
31	
32	Example:
33	
34	rt9455@22 {
35		compatible = "richtek,rt9455";
36		reg = <0x22>;
37	
38		interrupt-parent = <&gpio1>;
39		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
40	
41		richtek,output-charge-current	    = <500000>;
42		richtek,end-of-charge-percentage    = <10>;
43		richtek,battery-regulation-voltage  = <4200000>;
44		richtek,boost-output-voltage	    = <5050000>;
45	
46		richtek,min-input-voltage-regulation = <4500000>;
47		richtek,avg-input-current-regulation = <500000>;
48	};
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