Kernel-3.10.0-957.el7_da7219

published: updated: Kernel_3.10.0-957.el7_内核文档

Dialog Semiconductor DA7219 Audio Codec bindings

DA7219 is an audio codec with advanced accessory detect features.

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Required properties:

  • compatible : Should be “dlg,da7219”

  • reg: Specifies the I2C slave address

  • interrupt-parent : Specifies the phandle of the interrupt controller to which
    the IRQs from DA7219 are delivered to.

  • interrupts : IRQ line info for DA7219.
    (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt for
    further information relating to interrupt properties)

  • VDD-supply: VDD power supply for the device

  • VDDMIC-supply: VDDMIC power supply for the device

  • VDDIO-supply: VDDIO power supply for the device
    (See Documentation/devicetree/bindings/regulator/regulator.txt for further
    information relating to regulators)

Optional properties:

  • interrupt-names : Name associated with interrupt line. Should be “wakeup” if
    interrupt is to be used to wake system, otherwise “irq” should be used.

  • wakeup-source: Flag to indicate this device can wake system (suspend/resume).

  • #clock-cells : Should be set to ‘<0>’, only one clock source provided;

  • clock-output-names : Name given for DAI clocks output;

  • clocks : phandle and clock specifier for codec MCLK.

  • clock-names : Clock name string for ‘clocks’ attribute, should be “mclk”.

  • dlg,micbias-lvl : Voltage (mV) for Mic Bias
    [<1600>, <1800>, <2000>, <2200>, <2400>, <2600>]

  • dlg,mic-amp-in-sel : Mic input source type
    [“diff”, “se_p”, “se_n”]

Deprecated properties:

  • dlg,ldo-lvl : Required internal LDO voltage (mV) level for digital engine
    (LDO unavailable in production HW so property no longer required).

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Child node - ‘da7219_aad’:

Optional properties:

  • dlg,micbias-pulse-lvl : Mic bias higher voltage pulse level (mV).
    [<2800>, <2900>]
  • dlg,micbias-pulse-time : Mic bias higher voltage pulse duration (ms)
  • dlg,btn-cfg : Periodic button press measurements for 4-pole jack (ms)
    [<2>, <5>, <10>, <50>, <100>, <200>, <500>]
  • dlg,mic-det-thr : Impedance threshold for mic detection measurement (Ohms)
    [<200>, <500>, <750>, <1000>]
  • dlg,jack-ins-deb : Debounce time for jack insertion (ms)
    [<5>, <10>, <20>, <50>, <100>, <200>, <500>, <1000>]
  • dlg,jack-det-rate: Jack type detection latency (3/4 pole)
    [“32ms_64ms”, “64ms_128ms”, “128ms_256ms”, “256ms_512ms”]
  • dlg,jack-rem-deb : Debounce time for jack removal (ms)
    [<1>, <5>, <10>, <20>]
  • dlg,a-d-btn-thr : Impedance threshold between buttons A and D
    [0x0 - 0xFF]
  • dlg,d-b-btn-thr : Impedance threshold between buttons D and B
    [0x0 - 0xFF]
  • dlg,b-c-btn-thr : Impedance threshold between buttons B and C
    [0x0 - 0xFF]
  • dlg,c-mic-btn-thr : Impedance threshold between button C and Mic
    [0x0 - 0xFF]
  • dlg,btn-avg : Number of 8-bit readings for averaged button measurement
    [<1>, <2>, <4>, <8>]
  • dlg,adc-1bit-rpt : Repeat count for 1-bit button measurement
    [<1>, <2>, <4>, <8>]

======

Example:

codec: da7219@1a {
    compatible = "dlg,da7219";
    reg = <0x1a>;

    interrupt-parent = <&gpio6>;
    interrupts = <11 IRQ_TYPE_LEVEL_HIGH>;

    VDD-supply = <&reg_audio>;
    VDDMIC-supply = <&reg_audio>;
    VDDIO-supply = <&reg_audio>;

    #clock-cells = <0>;
    clock-output-names = "dai-clks";

    clocks = <&clks 201>;
    clock-names = "mclk";

    dlg,ldo-lvl = <1200>;
    dlg,micbias-lvl = <2600>;
    dlg,mic-amp-in-sel = "diff";

    da7219_aad {
        dlg,btn-cfg = <50>;
        dlg,mic-det-thr = <500>;
        dlg,jack-ins-deb = <20>;
        dlg,jack-det-rate = "32ms_64ms";
        dlg,jack-rem-deb = <1>;

        dlg,a-d-btn-thr = <0xa>;
        dlg,d-b-btn-thr = <0x16>;
        dlg,b-c-btn-thr = <0x21>;
        dlg,c-mic-btn-thr = <0x3E>;

        dlg,btn-avg = <4>;
        dlg,adc-1bit-rpt = <1>;
    };
};

oosTech by Sam Lee