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[sfrench/cifs-2.6.git] / Documentation / devicetree / bindings / sound / ts3a227e.txt
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         };