da7218.txt

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    1 Dialog Semiconductor DA7218 Audio Codec bindings
    2 
    3 DA7218 is an audio codec with HP detect feature.
    4 
    5 ======
    6 
    7 Required properties:
    8 - compatible : Should be "dlg,da7217" or "dlg,da7218"
    9 - reg: Specifies the I2C slave address
   10 
   11 - VDD-supply: VDD power supply for the device
   12 - VDDMIC-supply: VDDMIC power supply for the device
   13 - VDDIO-supply: VDDIO power supply for the device
   14   (See Documentation/devicetree/bindings/regulator/regulator.txt for further
   15    information relating to regulators)
   16 
   17 Optional properties:
   18 - interrupts: IRQ line info for DA7218 chip.
   19   (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt for
   20    further information relating to interrupt properties)
   21 - interrupt-names : Name associated with interrupt line. Should be "wakeup" if
   22   interrupt is to be used to wake system, otherwise "irq" should be used.
   23 - wakeup-source: Flag to indicate this device can wake system (suspend/resume).
   24 
   25 - clocks : phandle and clock specifier for codec MCLK.
   26 - clock-names : Clock name string for 'clocks' attribute, should be "mclk".
   27 
   28 - dlg,micbias1-lvl-millivolt : Voltage (mV) for Mic Bias 1
   29         [<1200>, <1600>, <1800>, <2000>, <2200>, <2400>, <2600>, <2800>, <3000>]
   30 - dlg,micbias2-lvl-millivolt : Voltage (mV) for Mic Bias 2
   31         [<1200>, <1600>, <1800>, <2000>, <2200>, <2400>, <2600>, <2800>, <3000>]
   32 - dlg,mic1-amp-in-sel : Mic1 input source type
   33         ["diff", "se_p", "se_n"]
   34 - dlg,mic2-amp-in-sel : Mic2 input source type
   35         ["diff", "se_p", "se_n"]
   36 - dlg,dmic1-data-sel : DMIC1 channel select based on clock edge.
   37         ["lrise_rfall", "lfall_rrise"]
   38 - dlg,dmic1-samplephase : When to sample audio from DMIC1.
   39         ["on_clkedge", "between_clkedge"]
   40 - dlg,dmic1-clkrate-hz : DMic1 clock frequency (Hz).
   41         [<1500000>, <3000000>]
   42 - dlg,dmic2-data-sel : DMic2 channel select based on clock edge.
   43         ["lrise_rfall", "lfall_rrise"]
   44 - dlg,dmic2-samplephase : When to sample audio from DMic2.
   45         ["on_clkedge", "between_clkedge"]
   46 - dlg,dmic2-clkrate-hz : DMic2 clock frequency (Hz).
   47         [<1500000>, <3000000>]
   48 - dlg,hp-diff-single-supply : Boolean flag, use single supply for HP
   49                               (DA7217 only)
   50 
   51 ======
   52 
   53 Optional Child node - 'da7218_hpldet' (DA7218 only):
   54 
   55 Optional properties:
   56 - dlg,jack-rate-us : Time between jack detect measurements (us)
   57         [<5>, <10>, <20>, <40>, <80>, <160>, <320>, <640>]
   58 - dlg,jack-debounce : Number of debounce measurements taken for jack detect
   59         [<0>, <2>, <3>, <4>]
   60 - dlg,jack-threshold-pct : Threshold level for jack detection (% of VDD)
   61         [<84>, <88>, <92>, <96>]
   62 - dlg,comp-inv : Boolean flag, invert comparator output
   63 - dlg,hyst : Boolean flag, enable hysteresis
   64 - dlg,discharge : Boolean flag, auto discharge of Mic Bias on jack removal
   65 
   66 ======
   67 
   68 Example:
   69 
   70         codec: da7218@1a {
   71                 compatible = "dlg,da7218";
   72                 reg = <0x1a>;
   73                 interrupt-parent = <&gpio6>;
   74                 interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
   75                 wakeup-source;
   76 
   77                 VDD-supply = <&reg_audio>;
   78                 VDDMIC-supply = <&reg_audio>;
   79                 VDDIO-supply = <&reg_audio>;
   80 
   81                 clocks = <&clks 201>;
   82                 clock-names = "mclk";
   83 
   84                 dlg,micbias1-lvl-millivolt = <2600>;
   85                 dlg,micbias2-lvl-millivolt = <2600>;
   86                 dlg,mic1-amp-in-sel = "diff";
   87                 dlg,mic2-amp-in-sel = "diff";
   88 
   89                 dlg,dmic1-data-sel = "lrise_rfall";
   90                 dlg,dmic1-samplephase = "on_clkedge";
   91                 dlg,dmic1-clkrate-hz = <3000000>;
   92                 dlg,dmic2-data-sel = "lrise_rfall";
   93                 dlg,dmic2-samplephase = "on_clkedge";
   94                 dlg,dmic2-clkrate-hz = <3000000>;
   95 
   96                 da7218_hpldet {
   97                         dlg,jack-rate-us = <40>;
   98                         dlg,jack-debounce = <2>;
   99                         dlg,jack-threshold-pct = <84>;
  100                         dlg,hyst;
  101                 };
  102         };

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