Documentation/devicetree/bindings/iio/potentiometer/microchip,mcp4531.yaml

   1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/iio/potentiometer/microchip,mcp4531.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Microchip mcp4531 and similar potentiometers.
   8
   9 maintainers:
  10   - Peter Rosin <peda@axentia.se>
  11
  12 description: |
  13   Family of I2C digital potentiometer
  14   Datasheets at:
  15   * volatile https://ww1.microchip.com/downloads/en/DeviceDoc/22096b.pdf
  16   * non-volatile https://ww1.microchip.com/downloads/en/DeviceDoc/22107B.pdf
  17   Part numbers as follows: mcp4ABC-XXX where
  18   A =   5 (1 wiper), 6 (2 wipers)
  19   B =   3 (7-bit, volatile), 4 (7-bit, non-volatile),
  20         5 (8-bit, volatile), 6 (8-bit, non-volatile),
  21   C:    1 (potentiometer), 2 (rheostat)
  22   XXX = 502 (5 kOhms), 103 (10 kOhms), 503 (50 kOhms), 104 (100 kOhms)
  23
  24 properties:
  25   compatible:
  26     enum:
  27         # Ordering reflects part number + range, so 502 < 103 etc
  28       - microchip,mcp4531-502
  29       - microchip,mcp4531-103
  30       - microchip,mcp4531-503
  31       - microchip,mcp4531-104
  32       - microchip,mcp4532-502
  33       - microchip,mcp4532-103
  34       - microchip,mcp4532-503
  35       - microchip,mcp4532-104
  36       - microchip,mcp4541-502
  37       - microchip,mcp4541-103
  38       - microchip,mcp4541-503
  39       - microchip,mcp4541-104
  40       - microchip,mcp4542-502
  41       - microchip,mcp4542-103
  42       - microchip,mcp4542-503
  43       - microchip,mcp4542-104
  44       - microchip,mcp4551-502
  45       - microchip,mcp4551-103
  46       - microchip,mcp4551-503
  47       - microchip,mcp4551-104
  48       - microchip,mcp4552-502
  49       - microchip,mcp4552-103
  50       - microchip,mcp4552-503
  51       - microchip,mcp4552-104
  52       - microchip,mcp4561-502
  53       - microchip,mcp4561-103
  54       - microchip,mcp4561-503
  55       - microchip,mcp4561-104
  56       - microchip,mcp4562-502
  57       - microchip,mcp4562-103
  58       - microchip,mcp4562-503
  59       - microchip,mcp4562-104
  60       - microchip,mcp4631-502
  61       - microchip,mcp4631-103
  62       - microchip,mcp4631-503
  63       - microchip,mcp4631-104
  64       - microchip,mcp4632-502
  65       - microchip,mcp4632-103
  66       - microchip,mcp4632-503
  67       - microchip,mcp4632-104
  68       - microchip,mcp4641-502
  69       - microchip,mcp4641-103
  70       - microchip,mcp4641-503
  71       - microchip,mcp4641-104
  72       - microchip,mcp4642-502
  73       - microchip,mcp4642-103
  74       - microchip,mcp4642-503
  75       - microchip,mcp4642-104
  76       - microchip,mcp4651-502
  77       - microchip,mcp4651-103
  78       - microchip,mcp4651-503
  79       - microchip,mcp4651-104
  80       - microchip,mcp4652-502
  81       - microchip,mcp4652-103
  82       - microchip,mcp4652-503
  83       - microchip,mcp4652-104
  84       - microchip,mcp4661-502
  85       - microchip,mcp4661-103
  86       - microchip,mcp4661-503
  87       - microchip,mcp4661-104
  88       - microchip,mcp4662-502
  89       - microchip,mcp4662-103
  90       - microchip,mcp4662-503
  91       - microchip,mcp4662-104
  92
  93   reg:
  94     maxItems: 1
  95
  96   "#io-channel-cells":
  97     const: 1
  98
  99 required:
 100   - compatible
 101   - reg
 102
 103 additionalProperties: false
 104
 105 examples:
 106   - |
 107     i2c {
 108         #address-cells = <1>;
 109         #size-cells = <0>;
 110         dpot: dpot@28 {
 111             compatible = "microchip,mcp4651-104";
 112             reg = <0x28>;
 113             #io-channel-cells = <1>;
 114         };
 115     };
 116 ...