Documentation/devicetree/bindings/mfd/arizona.txt

   1 Cirrus Logic/Wolfson Microelectronics Arizona class audio SoCs
   2
   3 These devices are audio SoCs with extensive digital capabilites and a range
   4 of analogue I/O.
   5
   6 Required properties:
   7
   8   - compatible : One of the following chip-specific strings:
   9         "cirrus,cs47l24"
  10         "wlf,wm5102"
  11         "wlf,wm5110"
  12         "wlf,wm8280"
  13         "wlf,wm8997"
  14         "wlf,wm8998"
  15         "wlf,wm1814"
  16         "wlf,wm1831"
  17
  18   - reg : I2C slave address when connected using I2C, chip select number when
  19     using SPI.
  20
  21   - interrupts : The interrupt line the /IRQ signal for the device is
  22     connected to.
  23   - interrupt-controller : Arizona class devices contain interrupt controllers
  24     and may provide interrupt services to other devices.
  25   - interrupt-parent : The parent interrupt controller.
  26   - #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
  27     The first cell is the IRQ number.
  28     The second cell is the flags, encoded as the trigger masks from
  29     Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
  30
  31   - gpio-controller : Indicates this device is a GPIO controller.
  32   - #gpio-cells : Must be 2. The first cell is the pin number and the
  33     second cell is used to specify optional parameters (currently unused).
  34
  35   - AVDD-supply, DBVDD1-supply, CPVDD-supply : Power supplies for the device,
  36     as covered in Documentation/devicetree/bindings/regulator/regulator.txt
  37
  38   - DBVDD2-supply, DBVDD3-supply : Additional databus power supplies (wm5102,
  39     wm5110, wm8280, wm8998, wm1814)
  40
  41   - SPKVDDL-supply, SPKVDDR-supply : Speaker driver power supplies (wm5102,
  42     wm5110, wm8280, wm8998, wm1814)
  43
  44   - SPKVDD-supply : Speaker driver power supply (wm8997)
  45
  46   - DCVDD-supply : Main power supply (cs47l24, wm1831)
  47
  48   - MICVDD-supply : Microphone power supply (cs47l24, wm1831)
  49
  50 Optional properties:
  51
  52   - wlf,reset : GPIO specifier for the GPIO controlling /RESET
  53
  54   - clocks: Should reference the clocks supplied on MCLK1 and MCLK2
  55   - clock-names: Should contains two strings:
  56       "mclk1" for the clock supplied on MCLK1, recommended to be a high
  57       quality audio reference clock
  58       "mclk2" for the clock supplied on MCLK2, recommended to be an always on
  59       32k clock
  60
  61   - wlf,gpio-defaults : A list of GPIO configuration register values. Defines
  62     for the appropriate values can found in <dt-bindings/mfd/arizona.txt>. If
  63     absent, no configuration of these registers is performed. If any entry has
  64     a value that is out of range for a 16 bit register then the chip default
  65     will be used. If present exactly five values must be specified.
  66
  67   - wlf,inmode : A list of INn_MODE register values, where n is the number
  68     of input signals. Valid values are 0 (Differential), 1 (Single-ended) and
  69     2 (Digital Microphone). If absent, INn_MODE registers set to 0 by default.
  70     If present, values must be specified less than or equal to the number of
  71     input signals. If values less than the number of input signals, elements
  72     that have not been specified are set to 0 by default. Entries are:
  73     <IN1, IN2, IN3, IN4> (wm5102, wm5110, wm8280, wm8997)
  74     <IN1A, IN2A, IN1B, IN2B> (wm8998, wm1814)
  75   - wlf,out-mono : A list of boolean values indicating whether each output is
  76     mono or stereo. Position within the list indicates the output affected
  77     (eg. First entry in the list corresponds to output 1). A non-zero value
  78     indicates a mono output. If present, the number of values should be less
  79     than or equal to the number of outputs, if less values are supplied the
  80     additional outputs will be treated as stereo.
  81
  82   - wlf,dmic-ref : DMIC reference voltage source for each input, can be
  83     selected from either MICVDD or one of the MICBIAS's, defines
  84     (ARIZONA_DMIC_xxxx) are provided in <dt-bindings/mfd/arizona.txt>. If
  85     present, the number of values should be less than or equal to the
  86     number of inputs, unspecified inputs will use the chip default.
  87
  88   - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
  89     they are being externally supplied. As covered in
  90     Documentation/devicetree/bindings/regulator/regulator.txt
  91     (wm5102, wm5110, wm8280, wm8997, wm8998, wm1814)
  92
  93 Also see child specific device properties:
  94   Regulator - ../regulator/arizona-regulator.txt
  95   Extcon    - ../extcon/extcon-arizona.txt
  96
  97 Example:
  98
  99 codec: wm5102@1a {
 100         compatible = "wlf,wm5102";
 101         reg = <0x1a>;
 102         interrupts = <347>;
 103         interrupt-controller;
 104         #interrupt-cells = <2>;
 105         interrupt-parent = <&gic>;
 106
 107         gpio-controller;
 108         #gpio-cells = <2>;
 109
 110         wlf,gpio-defaults = <
 111                 ARIZONA_GP_FN_TXLRCLK
 112                 ARIZONA_GP_DEFAULT
 113                 ARIZONA_GP_DEFAULT
 114                 ARIZONA_GP_DEFAULT
 115                 ARIZONA_GP_DEFAULT
 116         >;
 117 };