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 MICBIAS 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>; }; };