Kernel-4.18.0-80.el8_da7218

Dialog Semiconductor DA7218 Audio Codec bindings

DA7218 is an audio codec with HP detect feature.

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Required properties:

• compatible : Should be “dlg,da7217” or “dlg,da7218”

• reg: Specifies the I2C slave address

• 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-parent: Specifies the phandle of the interrupt controller to which
  the IRQs from DA7218 are delivered to.

• interrupts: IRQ line info for DA7218 chip.
  (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt for
  further information relating to interrupt 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).

• clocks : phandle and clock specifier for codec MCLK.

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

• dlg,micbias1-lvl-millivolt : Voltage (mV) for Mic Bias 1
  [<1200>, <1600>, <1800>, <2000>, <2200>, <2400>, <2600>, <2800>, <3000>]

• dlg,micbias2-lvl-millivolt : Voltage (mV) for Mic Bias 2
  [<1200>, <1600>, <1800>, <2000>, <2200>, <2400>, <2600>, <2800>, <3000>]

• dlg,mic1-amp-in-sel : Mic1 input source type
  [“diff”, “se_p”, “se_n”]

• dlg,mic2-amp-in-sel : Mic2 input source type
  [“diff”, “se_p”, “se_n”]

• dlg,dmic1-data-sel : DMIC1 channel select based on clock edge.
  [“lrise_rfall”, “lfall_rrise”]

• dlg,dmic1-samplephase : When to sample audio from DMIC1.
  [“on_clkedge”, “between_clkedge”]

• dlg,dmic1-clkrate-hz : DMic1 clock frequency (Hz).
  [<1500000>, <3000000>]

• dlg,dmic2-data-sel : DMic2 channel select based on clock edge.
  [“lrise_rfall”, “lfall_rrise”]

• dlg,dmic2-samplephase : When to sample audio from DMic2.
  [“on_clkedge”, “between_clkedge”]

• dlg,dmic2-clkrate-hz : DMic2 clock frequency (Hz).
  [<1500000>, <3000000>]

• dlg,hp-diff-single-supply : Boolean flag, use single supply for HP

              (DA7217 only)
  

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Optional Child node - ‘da7218_hpldet’ (DA7218 only):

Optional properties:

• dlg,jack-rate-us : Time between jack detect measurements (us)
  [<5>, <10>, <20>, <40>, <80>, <160>, <320>, <640>]
• dlg,jack-debounce : Number of debounce measurements taken for jack detect
  [<0>, <2>, <3>, <4>]
• dlg,jack-threshold-pct : Threshold level for jack detection (% of VDD)
  [<84>, <88>, <92>, <96>]
• dlg,comp-inv : Boolean flag, invert comparator output
• dlg,hyst : Boolean flag, enable hysteresis
• dlg,discharge : Boolean flag, auto discharge of Mic Bias on jack removal

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Example:

codec: da7218@1a {
    compatible = "dlg,da7218";
    reg = <0x1a>;
    interrupt-parent = <&gpio6>;
    interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
    wakeup-source;

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

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

    dlg,micbias1-lvl-millivolt = <2600>;
    dlg,micbias2-lvl-millivolt = <2600>;
    dlg,mic1-amp-in-sel = "diff";
    dlg,mic2-amp-in-sel = "diff";

    dlg,dmic1-data-sel = "lrise_rfall";
    dlg,dmic1-samplephase = "on_clkedge";
    dlg,dmic1-clkrate-hz = <3000000>;
    dlg,dmic2-data-sel = "lrise_rfall";
    dlg,dmic2-samplephase = "on_clkedge";
    dlg,dmic2-clkrate-hz = <3000000>;

    da7218_hpldet {
        dlg,jack-rate-us = <40>;
        dlg,jack-debounce = <2>;
        dlg,jack-threshold-pct = <84>;
        dlg,hyst;
    };
};