CooCenter-System-kernel/Documentation/devicetree/bindings/sound/omap-abe-twl6040.txt

* Texas Instruments OMAP4+ and twl6040 based audio setups

Required properties:
- compatible: "ti,abe-twl6040"
- ti,model: Name of the sound card ( for example "SDP4430")
- ti,mclk-freq: MCLK frequency for HPPLL operation
- ti,mcpdm: phandle for the McPDM node
- ti,twl6040: phandle for the twl6040 core node
- ti,audio-routing: List of connections between audio components.
  Each entry is a pair of strings, the first being the connection's sink,
  the second being the connection's source.

Optional properties:
- ti,dmic: phandle for the OMAP dmic node if the machine have it connected
- ti,jack_detection: Need to be present if the board capable to detect jack
  insertion, removal.

Available audio endpoints for the audio-routing table:

Board connectors:
 * Headset Stereophone
 * Earphone Spk
 * Ext Spk
 * Line Out
 * Vibrator
 * Headset Mic
 * Main Handset Mic
 * Sub Handset Mic
 * Line In
 * Digital Mic

twl6040 pins:
 * HSOL
 * HSOR
 * EP
 * HFL
 * HFR
 * AUXL
 * AUXR
 * VIBRAL
 * VIBRAR
 * HSMIC
 * MAINMIC
 * SUBMIC
 * AFML
 * AFMR

 * Headset Mic Bias
 * Main Mic Bias
 * Digital Mic1 Bias
 * Digital Mic2 Bias

Digital mic pins:
 * DMic

Example:

sound {
	compatible = "ti,abe-twl6040";
	ti,model = "SDP4430";

	ti,jack-detection;
	ti,mclk-freq = <38400000>;

	ti,mcpdm = <&mcpdm>;
	ti,dmic = <&dmic>;

	ti,twl6040 = <&twl6040>;

	/* Audio routing */
	ti,audio-routing =
		"Headset Stereophone", "HSOL",
		"Headset Stereophone", "HSOR",
		"Earphone Spk", "EP",
		"Ext Spk", "HFL",
		"Ext Spk", "HFR",
		"Line Out", "AUXL",
		"Line Out", "AUXR",
		"Vibrator", "VIBRAL",
		"Vibrator", "VIBRAR",
		"HSMIC", "Headset Mic",
		"Headset Mic", "Headset Mic Bias",
		"MAINMIC", "Main Handset Mic",
		"Main Handset Mic", "Main Mic Bias",
		"SUBMIC", "Sub Handset Mic",
		"Sub Handset Mic", "Main Mic Bias",
		"AFML", "Line In",
		"AFMR", "Line In",
		"DMic", "Digital Mic",
		"Digital Mic", "Digital Mic1 Bias";
};