rt5682.txt

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    1 RT5682 audio CODEC
    2 
    3 This device supports I2C only.
    4 
    5 Required properties:
    6 
    7 - compatible : "realtek,rt5682" or "realtek,rt5682i"
    8 
    9 - reg : The I2C address of the device.
   10 
   11 Optional properties:
   12 
   13 - interrupts : The CODEC's interrupt output.
   14 
   15 - realtek,dmic1-data-pin
   16   0: dmic1 is not used
   17   1: using GPIO2 pin as dmic1 data pin
   18   2: using GPIO5 pin as dmic1 data pin
   19 
   20 - realtek,dmic1-clk-pin
   21   0: using GPIO1 pin as dmic1 clock pin
   22   1: using GPIO3 pin as dmic1 clock pin
   23 
   24 - realtek,jd-src
   25   0: No JD is used
   26   1: using JD1 as JD source
   27 
   28 - realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
   29 
   30 - realtek,btndet-delay
   31   The debounce delay for push button.
   32   The delay time is realtek,btndet-delay value multiple of 8.192 ms.
   33   If absent, the default is 16.
   34 
   35 - #clock-cells : Should be set to '<1>',  wclk and bclk sources provided.
   36 - clock-output-names : Name given for DAI clocks output.
   37 
   38 - clocks : phandle and clock specifier for codec MCLK.
   39 - clock-names : Clock name string for 'clocks' attribute, should be "mclk".
   40 
   41 - realtek,dmic-clk-rate-hz : Set the clock rate (hz) for the requirement of
   42   the particular DMIC.
   43 
   44 - realtek,dmic-delay-ms : Set the delay time (ms) for the requirement of
   45   the particular DMIC.
   46 
   47 - realtek,dmic-clk-driving-high : Set the high driving of the DMIC clock out.
   48 
   49 - #sound-dai-cells: Should be set to '<0>'.
   50 
   51 Pins on the device (for linking into audio routes) for RT5682:
   52 
   53   * DMIC L1
   54   * DMIC R1
   55   * IN1P
   56   * HPOL
   57   * HPOR
   58 
   59 Example:
   60 
   61 rt5682 {
   62         compatible = "realtek,rt5682i";
   63         reg = <0x1a>;
   64         interrupt-parent = <&gpio>;
   65         interrupts = <TEGRA_GPIO(U, 6) IRQ_TYPE_LEVEL_HIGH>;
   66         realtek,ldo1-en-gpios =
   67                 <&gpio TEGRA_GPIO(R, 2) GPIO_ACTIVE_HIGH>;
   68         realtek,dmic1-data-pin = <1>;
   69         realtek,dmic1-clk-pin = <1>;
   70         realtek,jd-src = <1>;
   71         realtek,btndet-delay = <16>;
   72 
   73         #clock-cells = <1>;
   74         clock-output-names = "rt5682-dai-wclk", "rt5682-dai-bclk";
   75 
   76         clocks = <&osc>;
   77         clock-names = "mclk";
   78 };

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sys/contrib/device-tree/Bindings/sound/rt5682.txt