ts3a227e.txt

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    1 Texas Instruments TS3A227E
    2 Autonomous Audio Accessory Detection and Configuration Switch
    3 
    4 The TS3A227E detect headsets of 3-ring and 4-ring standards and
    5 switches automatically to route the microphone correctly.  It also
    6 handles key press detection in accordance with the Android audio
    7 headset specification v1.0.
    8 
    9 Required properties:
   10 
   11  - compatible:          Should contain "ti,ts3a227e".
   12  - reg:                 The i2c address. Should contain <0x3b>.
   13  - interrupts:          Interrupt number for /INT pin from the 227e
   14 
   15 Optional properies:
   16  - ti,micbias:   Intended MICBIAS voltage (datasheet section 9.6.7).
   17       Select 0/1/2/3/4/5/6/7 to specify MICBIAS voltage
   18       2.1V/2.2V/2.3V/2.4V/2.5V/2.6V/2.7V/2.8V
   19       Default value is "1" (2.2V).
   20 
   21 Examples:
   22 
   23         i2c {
   24                 ts3a227e@3b {
   25                         compatible = "ti,ts3a227e";
   26                         reg = <0x3b>;
   27                         interrupt-parent = <&gpio>;
   28                         interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
   29                 };
   30         };

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sys/contrib/device-tree/Bindings/sound/ts3a227e.txt