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| -rw-r--r-- | Documentation/devicetree/bindings/sound/ts3a227e.txt | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/ts3a227e.txt b/Documentation/devicetree/bindings/sound/ts3a227e.txt new file mode 100644 index 000000000..3ed835914 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/ts3a227e.txt @@ -0,0 +1,30 @@ +Texas Instruments TS3A227E +Autonomous Audio Accessory Detection and Configuration Switch + +The TS3A227E detect headsets of 3-ring and 4-ring standards and +switches automatically to route the microphone correctly. It also +handles key press detection in accordance with the Android audio +headset specification v1.0. + +Required properties: + + - compatible: Should contain "ti,ts3a227e". + - reg: The i2c address. Should contain <0x3b>. + - interrupts: Interrupt number for /INT pin from the 227e + +Optional properies: + - ti,micbias: Intended MICBIAS voltage (datasheet section 9.6.7). + Select 0/1/2/3/4/5/6/7 to specify MACBIAS voltage + 2.1V/2.2V/2.3V/2.4V/2.5V/2.6V/2.7V/2.8V + Default value is "1" (2.2V). + +Examples: + + i2c { + ts3a227e@3b { + compatible = "ti,ts3a227e"; + reg = <0x3b>; + interrupt-parent = <&gpio>; + interrupts = <3 IRQ_TYPE_LEVEL_LOW>; + }; + }; |