Documentation/devicetree/bindings/power/supply/cw2015_battery.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/power/supply/cw2015_battery.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Battery driver for CW2015 shuntless fuel gauge by CellWise.
   8
   9 maintainers:
  10   - Tobias Schramm <t.schramm@manjaro.org>
  11
  12 description: |
  13   The driver can utilize information from a simple-battery linked via a
  14   phandle in monitored-battery. If specified the driver uses the
  15   charge-full-design-microamp-hours property of the battery.
  16
  17 allOf:
  18   - $ref: power-supply.yaml#
  19
  20 properties:
  21   compatible:
  22     const: cellwise,cw2015
  23
  24   reg:
  25     maxItems: 1
  26
  27   cellwise,battery-profile:
  28     description: |
  29       This property specifies characteristics of the battery used. The format
  30       of this binary blob is kept secret by CellWise. The only way to obtain
  31       it is to mail two batteries to a test facility of CellWise and receive
  32       back a test report with the binary blob.
  33     $ref: /schemas/types.yaml#/definitions/uint8-array
  34     minItems: 64
  35     maxItems: 64
  36
  37   cellwise,monitor-interval-ms:
  38     description:
  39       Specifies the interval in milliseconds gauge values are polled at
  40     minimum: 250
  41
  42   power-supplies:
  43     minItems: 1
  44     maxItems: 8 # Should be enough
  45
  46   monitored-battery:
  47     description:
  48       Specifies the phandle of a simple-battery connected to this gauge
  49     $ref: /schemas/types.yaml#/definitions/phandle
  50
  51 required:
  52   - compatible
  53   - reg
  54
  55 additionalProperties: false
  56
  57 examples:
  58   - |
  59     i2c {
  60         #address-cells = <1>;
  61         #size-cells = <0>;
  62
  63         cw2015@62 {
  64             compatible = "cellwise,cw2015";
  65             reg = <0x62>;
  66             cellwise,battery-profile = /bits/ 8 <
  67                 0x17 0x67 0x80 0x73 0x6E 0x6C 0x6B 0x63
  68                 0x77 0x51 0x5C 0x58 0x50 0x4C 0x48 0x36
  69                 0x15 0x0C 0x0C 0x19 0x5B 0x7D 0x6F 0x69
  70                 0x69 0x5B 0x0C 0x29 0x20 0x40 0x52 0x59
  71                 0x57 0x56 0x54 0x4F 0x3B 0x1F 0x7F 0x17
  72                 0x06 0x1A 0x30 0x5A 0x85 0x93 0x96 0x2D
  73                 0x48 0x77 0x9C 0xB3 0x80 0x52 0x94 0xCB
  74                 0x2F 0x00 0x64 0xA5 0xB5 0x11 0xF0 0x11
  75            >;
  76            cellwise,monitor-interval-ms = <5000>;
  77            monitored-battery = <&bat>;
  78            power-supplies = <&mains_charger>, <&usb_charger>;
  79        };
  80     };
  81