dongwoon,dw9768.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 # Copyright (c) 2020 MediaTek Inc.
    3 %YAML 1.2
    4 ---
    5 $id: http://devicetree.org/schemas/media/i2c/dongwoon,dw9768.yaml#
    6 $schema: http://devicetree.org/meta-schemas/core.yaml#
    7 
    8 title: Dongwoon Anatech DW9768 Voice Coil Motor (VCM) Lens Device Tree Bindings
    9 
   10 maintainers:
   11   - Dongchun Zhu <dongchun.zhu@mediatek.com>
   12 
   13 description: |-
   14   The Dongwoon DW9768 is a single 10-bit digital-to-analog (DAC) converter
   15   with 100 mA output current sink capability. VCM current is controlled with
   16   a linear mode driver. The DAC is controlled via a 2-wire (I2C-compatible)
   17   serial interface that operates at clock rates up to 1MHz. This chip
   18   integrates Advanced Actuator Control (AAC) technology and is intended for
   19   driving voice coil lenses in camera modules.
   20 
   21 properties:
   22   compatible:
   23     enum:
   24       - dongwoon,dw9768 # for DW9768 VCM
   25       - giantec,gt9769  # for GT9769 VCM
   26 
   27   reg:
   28     maxItems: 1
   29 
   30   vin-supply:
   31     description:
   32       Definition of the regulator used as Digital I/O voltage supply.
   33 
   34   vdd-supply:
   35     description:
   36       Definition of the regulator used as Digital core voltage supply.
   37 
   38   dongwoon,aac-mode:
   39     description:
   40       Indication of AAC mode select.
   41     $ref: "/schemas/types.yaml#/definitions/uint32"
   42     enum:
   43       - 1    #  AAC2 mode(operation time# 0.48 x Tvib)
   44       - 2    #  AAC3 mode(operation time# 0.70 x Tvib)
   45       - 3    #  AAC4 mode(operation time# 0.75 x Tvib)
   46       - 5    #  AAC8 mode(operation time# 1.13 x Tvib)
   47     default: 2
   48 
   49   dongwoon,aac-timing:
   50     description:
   51       Number of AAC Timing count that controlled by one 6-bit period of
   52       vibration register AACT[5:0], the unit of which is 100 us.
   53     $ref: "/schemas/types.yaml#/definitions/uint32"
   54     default: 0x20
   55     minimum: 0x00
   56     maximum: 0x3f
   57 
   58   dongwoon,clock-presc:
   59     description:
   60       Indication of VCM internal clock dividing rate select, as one multiple
   61       factor to calculate VCM ring periodic time Tvib.
   62     $ref: "/schemas/types.yaml#/definitions/uint32"
   63     enum:
   64       - 0    #  Dividing Rate -  2
   65       - 1    #  Dividing Rate -  1
   66       - 2    #  Dividing Rate -  1/2
   67       - 3    #  Dividing Rate -  1/4
   68       - 4    #  Dividing Rate -  8
   69       - 5    #  Dividing Rate -  4
   70     default: 1
   71 
   72 required:
   73   - compatible
   74   - reg
   75   - vin-supply
   76   - vdd-supply
   77 
   78 additionalProperties: false
   79 
   80 examples:
   81   - |
   82 
   83     i2c {
   84         #address-cells = <1>;
   85         #size-cells = <0>;
   86 
   87         dw9768: camera-lens@c {
   88             compatible = "dongwoon,dw9768";
   89             reg = <0x0c>;
   90 
   91             vin-supply = <&mt6358_vcamio_reg>;
   92             vdd-supply = <&mt6358_vcama2_reg>;
   93             dongwoon,aac-timing = <0x39>;
   94         };
   95     };
   96 
   97 ...

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sys/contrib/device-tree/Bindings/media/i2c/dongwoon,dw9768.yaml