1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/power/suppl 4 $id: http://devicetree.org/schemas/power/supply/richtek,rt9455.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Richtek rt9455 battery charger 7 title: Richtek rt9455 battery charger
8 8
9 maintainers: 9 maintainers:
10 - Sebastian Reichel <sre@kernel.org> 10 - Sebastian Reichel <sre@kernel.org>
11 11
12 allOf: 12 allOf:
13 - $ref: power-supply.yaml# 13 - $ref: power-supply.yaml#
14 14
15 properties: 15 properties:
16 compatible: 16 compatible:
17 const: richtek,rt9455 17 const: richtek,rt9455
18 18
19 reg: 19 reg:
20 maxItems: 1 20 maxItems: 1
21 21
22 interrupts: 22 interrupts:
23 maxItems: 1 23 maxItems: 1
24 24
25 richtek,output-charge-current: 25 richtek,output-charge-current:
26 $ref: /schemas/types.yaml#/definitions/uin 26 $ref: /schemas/types.yaml#/definitions/uint32
27 description: output current from the charg 27 description: output current from the charger to the battery, in uA.
28 28
29 richtek,end-of-charge-percentage: 29 richtek,end-of-charge-percentage:
30 $ref: /schemas/types.yaml#/definitions/uin 30 $ref: /schemas/types.yaml#/definitions/uint32
31 description: | 31 description: |
32 percent of the output charge current. Wh 32 percent of the output charge current. When the current in constant-voltage phase drops
33 below output_charge_current x end-of-cha 33 below output_charge_current x end-of-charge-percentage, charge is terminated.
34 34
35 richtek,battery-regulation-voltage: 35 richtek,battery-regulation-voltage:
36 $ref: /schemas/types.yaml#/definitions/uin 36 $ref: /schemas/types.yaml#/definitions/uint32
37 description: maximum battery voltage in uV 37 description: maximum battery voltage in uV.
38 38
39 richtek,boost-output-voltage: 39 richtek,boost-output-voltage:
40 $ref: /schemas/types.yaml#/definitions/uin 40 $ref: /schemas/types.yaml#/definitions/uint32
41 description: | 41 description: |
42 maximum voltage provided to consumer dev 42 maximum voltage provided to consumer devices, when the charger is in boost mode, in uV.
43 43
44 richtek,min-input-voltage-regulation: 44 richtek,min-input-voltage-regulation:
45 $ref: /schemas/types.yaml#/definitions/uin 45 $ref: /schemas/types.yaml#/definitions/uint32
46 description: | 46 description: |
47 input voltage level in uV, used to decre 47 input voltage level in uV, used to decrease voltage level when the over current of the
48 input power source occurs. This prevents 48 input power source occurs. This prevents input voltage drop due to insufficient
49 current provided by the power source. De 49 current provided by the power source. Defaults to 4500000 uV (4.5V).
50 50
51 richtek,avg-input-current-regulation: 51 richtek,avg-input-current-regulation:
52 $ref: /schemas/types.yaml#/definitions/uin 52 $ref: /schemas/types.yaml#/definitions/uint32
53 description: | 53 description: |
54 input current value in uA drained by the 54 input current value in uA drained by the charger from the power source.
55 Defaults to 500000 uA (500mA). 55 Defaults to 500000 uA (500mA).
56 56
57 required: 57 required:
58 - compatible 58 - compatible
59 - reg 59 - reg
60 - interrupts 60 - interrupts
61 - richtek,output-charge-current 61 - richtek,output-charge-current
62 - richtek,end-of-charge-percentage 62 - richtek,end-of-charge-percentage
63 - richtek,battery-regulation-voltage 63 - richtek,battery-regulation-voltage
64 - richtek,boost-output-voltage 64 - richtek,boost-output-voltage
65 65
66 additionalProperties: false 66 additionalProperties: false
67 67
68 examples: 68 examples:
69 - | 69 - |
70 #include <dt-bindings/interrupt-controller 70 #include <dt-bindings/interrupt-controller/irq.h>
71 i2c { 71 i2c {
72 #address-cells = <1>; 72 #address-cells = <1>;
73 #size-cells = <0>; 73 #size-cells = <0>;
74 74
75 charger@22 { 75 charger@22 {
76 compatible = "richtek,rt9455"; 76 compatible = "richtek,rt9455";
77 reg = <0x22>; 77 reg = <0x22>;
78 78
79 interrupt-parent = <&gpio1>; 79 interrupt-parent = <&gpio1>;
80 interrupts = <0 IRQ_TYPE_LEVEL_LOW>; 80 interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
81 81
82 richtek,output-charge-current = <50000 82 richtek,output-charge-current = <500000>;
83 richtek,end-of-charge-percentage = <10 83 richtek,end-of-charge-percentage = <10>;
84 richtek,battery-regulation-voltage = < 84 richtek,battery-regulation-voltage = <4200000>;
85 richtek,boost-output-voltage = <505000 85 richtek,boost-output-voltage = <5050000>;
86 86
87 richtek,min-input-voltage-regulation = 87 richtek,min-input-voltage-regulation = <4500000>;
88 richtek,avg-input-current-regulation = 88 richtek,avg-input-current-regulation = <500000>;
89 }; 89 };
90 }; 90 };
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