linux-stable/Documentation/devicetree/bindings/sound/omap-twl4030.txt
Marek Belisko 624ce7616d Documentation: omap-twl4030: Move ti,codec property to optional
ti,codec property is not used in omap-twl4030 driver in linux kernel but
we keep it as optional property, so that the existing dtbs do not
become noncompliant after the change on other OS.

Signed-off-by: Marek Belisko <marek@goldelico.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-16 19:24:52 -07:00

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* Texas Instruments SoC with twl4030 based audio setups
Required properties:
- compatible: "ti,omap-twl4030"
- ti,model: Name of the sound card (for example "omap3beagle")
- ti,mcbsp: phandle for the McBSP node
Optional properties:
- ti,codec: phandle for the twl4030 audio node
- ti,mcbsp-voice: phandle for the McBSP node connected to the voice port of twl
- ti, jack-det-gpio: Jack detect GPIO
- 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.
If the routing is not provided all possible connection will be available
Available audio endpoints for the audio-routing table:
Board connectors:
* Headset Stereophone
* Earpiece Spk
* Handsfree Spk
* Ext Spk
* Main Mic
* Sub Mic
* Headset Mic
* Carkit Mic
* Digital0 Mic
* Digital1 Mic
* Line In
twl4030 pins:
* HSOL
* HSOR
* EARPIECE
* HFL
* HFR
* PREDRIVEL
* PREDRIVER
* CARKITL
* CARKITR
* MAINMIC
* SUBMIC
* HSMIC
* DIGIMIC0
* DIGIMIC1
* CARKITMIC
* AUXL
* AUXR
* Headset Mic Bias
* Mic Bias 1 /* Used for Main Mic or Digimic0 */
* Mic Bias 2 /* Used for Sub Mic or Digimic1 */
Example:
sound {
compatible = "ti,omap-twl4030";
ti,model = "omap3beagle";
ti,mcbsp = <&mcbsp2>;
};