linux/Documentation/devicetree/bindings/sound/imx-audio-es8328.txt
Sean Cross 7e7292dba2 ASoC: fsl: add imx-es8328 machine driver
This adds an initial machine driver for the ES8328 audio codec on Freescale
boards.  The driver supports headphones and an audio regulator for an onboard
speaker amp.

Signed-off-by: Sean Cross <xobs@kosagi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-16 17:18:07 -05:00

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Freescale i.MX audio complex with ES8328 codec
Required properties:
- compatible : "fsl,imx-audio-es8328"
- model : The user-visible name of this sound complex
- ssi-controller : The phandle of the i.MX SSI controller
- jack-gpio : Optional GPIO for headphone jack
- audio-amp-supply : Power regulator for speaker amps
- audio-codec : The phandle of the ES8328 audio codec
- audio-routing : A list of the 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. Valid names could be power supplies, ES8328
pins, and the jacks on the board:
Power supplies:
* audio-amp
ES8328 pins:
* LOUT1
* LOUT2
* ROUT1
* ROUT2
* LINPUT1
* LINPUT2
* RINPUT1
* RINPUT2
* Mic PGA
Board connectors:
* Headphone
* Speaker
* Mic Jack
- mux-int-port : The internal port of the i.MX audio muxer (AUDMUX)
- mux-ext-port : The external port of the i.MX audio muxer (AUDMIX)
Note: The AUDMUX port numbering should start at 1, which is consistent with
hardware manual.
Example:
sound {
compatible = "fsl,imx-audio-es8328";
model = "imx-audio-es8328";
ssi-controller = <&ssi1>;
audio-codec = <&codec>;
jack-gpio = <&gpio5 15 0>;
audio-amp-supply = <&reg_audio_amp>;
audio-routing =
"Speaker", "LOUT2",
"Speaker", "ROUT2",
"Speaker", "audio-amp",
"Headphone", "ROUT1",
"Headphone", "LOUT1",
"LINPUT1", "Mic Jack",
"RINPUT1", "Mic Jack",
"Mic Jack", "Mic Bias";
mux-int-port = <1>;
mux-ext-port = <3>;
};