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linux-next/Documentation/devicetree/bindings/sound/wm8731.txt
Nicolas Ferre fdbcb3cba5 ASoC: atmel: machine driver for at91sam9x5-wm8731 boards
Description of the Asoc machine driver for an at91sam9x5 based board
with a wm8731 audio DAC. Wm8731 is clocked by a crystal and used as a
master on the SSC/I2S interface. Its connections are a headphone jack
and an Line input jack.

[Richard: this is based on an old patch from Nicolas that I forward
ported and reworked to use only device tree]

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-06 18:11:09 +01:00

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WM8731 audio CODEC
This device supports both I2C and SPI (configured with pin strapping
on the board).
Required properties:
- compatible : "wlf,wm8731"
- reg : the I2C address of the device for I2C, the chip select
number for SPI.
Example:
codec: wm8731@1a {
compatible = "wlf,wm8731";
reg = <0x1a>;
};
Available audio endpoints for an audio-routing table:
* LOUT: Left Channel Line Output
* ROUT: Right Channel Line Output
* LHPOUT: Left Channel Headphone Output
* RHPOUT: Right Channel Headphone Output
* LLINEIN: Left Channel Line Input
* RLINEIN: Right Channel Line Input
* MICIN: Microphone Input