da7219.txt

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    1 Dialog Semiconductor DA7219 Audio Codec bindings
    2 
    3 DA7219 is an audio codec with advanced accessory detect features.
    4 
    5 ======
    6 
    7 Required properties:
    8 - compatible : Should be "dlg,da7219"
    9 - reg: Specifies the I2C slave address
   10 
   11 - interrupts : IRQ line info for DA7219.
   12   (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt for
   13    further information relating to interrupt properties)
   14 
   15 - VDD-supply: VDD power supply for the device
   16 - VDDMIC-supply: VDDMIC power supply for the device
   17 - VDDIO-supply: VDDIO power supply for the device
   18   (See Documentation/devicetree/bindings/regulator/regulator.txt for further
   19    information relating to regulators)
   20 
   21 Optional properties:
   22 - interrupt-names : Name associated with interrupt line. Should be "wakeup" if
   23   interrupt is to be used to wake system, otherwise "irq" should be used.
   24 - wakeup-source: Flag to indicate this device can wake system (suspend/resume).
   25 
   26 - #clock-cells :  Should be set to '<1>', two clock sources provided;
   27 - clock-output-names : Names given for DAI clock outputs (WCLK & BCLK);
   28 
   29 - clocks : phandle and clock specifier for codec MCLK.
   30 - clock-names : Clock name string for 'clocks' attribute, should be "mclk".
   31 
   32 - dlg,micbias-lvl : Voltage (mV) for Mic Bias
   33         [<1600>, <1800>, <2000>, <2200>, <2400>, <2600>]
   34 - dlg,mic-amp-in-sel : Mic input source type
   35         ["diff", "se_p", "se_n"]
   36 
   37 Deprecated properties:
   38 - dlg,ldo-lvl : Required internal LDO voltage (mV) level for digital engine
   39   (LDO unavailable in production HW so property no longer required).
   40 
   41 ======
   42 
   43 Child node - 'da7219_aad':
   44 
   45 Optional properties:
   46 - dlg,micbias-pulse-lvl : Mic bias higher voltage pulse level (mV).
   47         [<2800>, <2900>]
   48 - dlg,micbias-pulse-time : Mic bias higher voltage pulse duration (ms)
   49 - dlg,btn-cfg : Periodic button press measurements for 4-pole jack (ms)
   50         [<2>, <5>, <10>, <50>, <100>, <200>, <500>]
   51 - dlg,mic-det-thr : Impedance threshold for mic detection measurement (Ohms)
   52         [<200>, <500>, <750>, <1000>]
   53 - dlg,jack-ins-deb : Debounce time for jack insertion (ms)
   54         [<5>, <10>, <20>, <50>, <100>, <200>, <500>, <1000>]
   55 - dlg,jack-det-rate: Jack type detection latency (3/4 pole)
   56         ["32ms_64ms", "64ms_128ms", "128ms_256ms", "256ms_512ms"]
   57 - dlg,jack-rem-deb : Debounce time for jack removal (ms)
   58         [<1>, <5>, <10>, <20>]
   59 - dlg,a-d-btn-thr : Impedance threshold between buttons A and D
   60         [0x0 - 0xFF]
   61 - dlg,d-b-btn-thr : Impedance threshold between buttons D and B
   62         [0x0 - 0xFF]
   63 - dlg,b-c-btn-thr : Impedance threshold between buttons B and C
   64         [0x0 - 0xFF]
   65 - dlg,c-mic-btn-thr : Impedance threshold between button C and Mic
   66         [0x0 - 0xFF]
   67 - dlg,btn-avg : Number of 8-bit readings for averaged button measurement
   68         [<1>, <2>, <4>, <8>]
   69 - dlg,adc-1bit-rpt : Repeat count for 1-bit button measurement
   70         [<1>, <2>, <4>, <8>]
   71 
   72 ======
   73 
   74 Example:
   75 
   76         codec: da7219@1a {
   77                 compatible = "dlg,da7219";
   78                 reg = <0x1a>;
   79 
   80                 interrupt-parent = <&gpio6>;
   81                 interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
   82 
   83                 VDD-supply = <&reg_audio>;
   84                 VDDMIC-supply = <&reg_audio>;
   85                 VDDIO-supply = <&reg_audio>;
   86 
   87                 #clock-cells = <1>;
   88                 clock-output-names = "dai-wclk", "dai-bclk";
   89 
   90                 clocks = <&clks 201>;
   91                 clock-names = "mclk";
   92 
   93                 dlg,ldo-lvl = <1200>;
   94                 dlg,micbias-lvl = <2600>;
   95                 dlg,mic-amp-in-sel = "diff";
   96 
   97                 da7219_aad {
   98                         dlg,btn-cfg = <50>;
   99                         dlg,mic-det-thr = <500>;
  100                         dlg,jack-ins-deb = <20>;
  101                         dlg,jack-det-rate = "32ms_64ms";
  102                         dlg,jack-rem-deb = <1>;
  103 
  104                         dlg,a-d-btn-thr = <0xa>;
  105                         dlg,d-b-btn-thr = <0x16>;
  106                         dlg,b-c-btn-thr = <0x21>;
  107                         dlg,c-mic-btn-thr = <0x3E>;
  108 
  109                         dlg,btn-avg = <4>;
  110                         dlg,adc-1bit-rpt = <1>;
  111                 };
  112         };

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sys/contrib/device-tree/Bindings/sound/da7219.txt