sgtl5000.txt

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    1 * Freescale SGTL5000 Stereo Codec
    2 
    3 Required properties:
    4 - compatible : "fsl,sgtl5000".
    5 
    6 - reg : the I2C address of the device
    7 
    8 - #sound-dai-cells: must be equal to 0
    9 
   10 - clocks : the clock provider of SYS_MCLK
   11 
   12 - VDDA-supply : the regulator provider of VDDA
   13 
   14 - VDDIO-supply: the regulator provider of VDDIO
   15 
   16 Optional properties:
   17 
   18 - VDDD-supply : the regulator provider of VDDD
   19 
   20 - micbias-resistor-k-ohms : the bias resistor to be used in kOhms
   21         The resistor can take values of 2k, 4k or 8k.
   22         If set to 0 it will be off.
   23         If this node is not mentioned or if the value is unknown, then
   24         micbias resistor is set to 4K.
   25 
   26 - micbias-voltage-m-volts : the bias voltage to be used in mVolts
   27         The voltage can take values from 1.25V to 3V by 250mV steps
   28         If this node is not mentioned or the value is unknown, then
   29         the value is set to 1.25V.
   30 
   31 - lrclk-strength: the LRCLK pad strength. Possible values are:
   32 0, 1, 2 and 3 as per the table below:
   33 
   34 VDDIO           1.8V            2.5V            3.3V
   35 0 =             Disable
   36 1 =             1.66 mA         2.87 mA         4.02  mA
   37 2 =             3.33 mA         5.74 mA         8.03  mA
   38 3 =             4.99 mA         8.61 mA         12.05 mA
   39 
   40 - sclk-strength: the SCLK pad strength. Possible values are:
   41 0, 1, 2 and 3 as per the table below:
   42 
   43 VDDIO           1.8V            2.5V            3.3V
   44 0 =             Disable
   45 1 =             1.66 mA         2.87 mA         4.02  mA
   46 2 =             3.33 mA         5.74 mA         8.03  mA
   47 3 =             4.99 mA         8.61 mA         12.05 mA
   48 
   49 Example:
   50 
   51 sgtl5000: codec@a {
   52         compatible = "fsl,sgtl5000";
   53         reg = <0x0a>;
   54         #sound-dai-cells = <0>;
   55         clocks = <&clks 150>;
   56         micbias-resistor-k-ohms = <2>;
   57         micbias-voltage-m-volts = <2250>;
   58         VDDA-supply = <&reg_3p3v>;
   59         VDDIO-supply = <&reg_3p3v>;
   60 };

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sys/contrib/device-tree/Bindings/sound/sgtl5000.txt