| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/power/supply/maxim,max17040.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Maxim 17040 fuel gauge series |
| 8 | |
| 9 | maintainers: |
| 10 | - Sebastian Reichel <sre@kernel.org> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: power-supply.yaml# |
| 14 | |
| 15 | properties: |
| 16 | compatible: |
| 17 | enum: |
| 18 | - maxim,max17040 |
| 19 | - maxim,max17041 |
| 20 | - maxim,max17043 |
| 21 | - maxim,max17044 |
| 22 | - maxim,max17048 |
| 23 | - maxim,max17049 |
| 24 | - maxim,max17058 |
| 25 | - maxim,max17059 |
| 26 | - maxim,max77836-battery |
| 27 | |
| 28 | reg: |
| 29 | maxItems: 1 |
| 30 | |
| 31 | maxim,alert-low-soc-level: |
| 32 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 33 | minimum: 1 |
| 34 | maximum: 32 |
| 35 | description: | |
| 36 | The alert threshold that sets the state of charge level (%) where an interrupt is generated. |
| 37 | If skipped the power up default value of 4 (%) will be used. |
| 38 | |
| 39 | maxim,double-soc: |
| 40 | type: boolean |
| 41 | description: | |
| 42 | Certain devices return double the capacity. |
| 43 | Specify this to divide the reported value in 2 and thus normalize it. |
| 44 | SoC == State of Charge == Capacity. |
| 45 | |
| 46 | maxim,rcomp: |
| 47 | $ref: /schemas/types.yaml#/definitions/uint8-array |
| 48 | minItems: 1 |
| 49 | maxItems: 2 |
| 50 | description: | |
| 51 | A value to compensate readings for various battery chemistries and operating temperatures. |
| 52 | max17040,41 have 2 byte rcomp, default to 0x97 0x00. |
| 53 | All other devices have one byte rcomp, default to 0x97. |
| 54 | |
| 55 | interrupts: |
| 56 | maxItems: 1 |
| 57 | |
| 58 | io-channels: |
| 59 | items: |
| 60 | - description: battery temperature |
| 61 | |
| 62 | io-channel-names: |
| 63 | items: |
| 64 | - const: temp |
| 65 | |
| 66 | wakeup-source: |
| 67 | type: boolean |
| 68 | description: | |
| 69 | Use this property to use alert low SoC level interrupt as wake up source. |
| 70 | |
| 71 | required: |
| 72 | - compatible |
| 73 | - reg |
| 74 | |
| 75 | unevaluatedProperties: false |
| 76 | |
| 77 | examples: |
| 78 | - | |
| 79 | i2c { |
| 80 | #address-cells = <1>; |
| 81 | #size-cells = <0>; |
| 82 | |
| 83 | battery@36 { |
| 84 | compatible = "maxim,max17048"; |
| 85 | reg = <0x36>; |
| 86 | maxim,rcomp = /bits/ 8 <0x56>; |
| 87 | maxim,alert-low-soc-level = <10>; |
| 88 | maxim,double-soc; |
| 89 | }; |
| 90 | }; |
| 91 | - | |
| 92 | #include <dt-bindings/interrupt-controller/irq.h> |
| 93 | i2c { |
| 94 | #address-cells = <1>; |
| 95 | #size-cells = <0>; |
| 96 | |
| 97 | battery@36 { |
| 98 | compatible = "maxim,max77836-battery"; |
| 99 | reg = <0x36>; |
| 100 | maxim,alert-low-soc-level = <10>; |
| 101 | interrupt-parent = <&gpio7>; |
| 102 | interrupts = <2 IRQ_TYPE_LEVEL_LOW>; |
| 103 | wakeup-source; |
| 104 | }; |
| 105 | }; |
| 106 | - | |
| 107 | #include <dt-bindings/interrupt-controller/irq.h> |
| 108 | i2c { |
| 109 | #address-cells = <1>; |
| 110 | #size-cells = <0>; |
| 111 | |
| 112 | fuel-gauge@36 { |
| 113 | compatible = "maxim,max17043"; |
| 114 | reg = <0x36>; |
| 115 | |
| 116 | interrupt-parent = <&gpio>; |
| 117 | interrupts = <144 IRQ_TYPE_EDGE_FALLING>; |
| 118 | |
| 119 | monitored-battery = <&battery>; |
| 120 | power-supplies = <&charger>; |
| 121 | |
| 122 | io-channels = <&adc 8>; |
| 123 | io-channel-names = "temp"; |
| 124 | |
| 125 | maxim,alert-low-soc-level = <10>; |
| 126 | wakeup-source; |
| 127 | }; |
| 128 | }; |