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authorStephen Warren2013-06-12 12:34:30 -0500
committerMark Brown2013-06-12 13:25:22 -0500
commitdcad9f031240d59e9e1475a8e5b2cb427da94f6e (patch)
tree5bb28075e74375030c5fd2e89531f01660700047 /Documentation/devicetree/bindings/sound/rt5640.txt
parent997b05203b0a710e11f9b2732bef2d2fdc1d824b (diff)
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ASoC: rt5640: add device tree support
Modify the RT5640 driver to parse platform data from device tree. Write a DT binding document to describe those properties. Slight re-ordering of rt5640_i2c_probe() to better fit the DT parsing. Since ldo1_en is optional, guard usage of it with gpio_is_valid(), rather than open-coding an if (gpio) check. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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1RT5640 audio CODEC
2
3This device supports I2C only.
4
5Required properties:
6
7- compatible : "realtek,rt5640".
8
9- reg : The I2C address of the device.
10
11- interrupts : The CODEC's interrupt output.
12
13Optional properties:
14
15- realtek,in1-differential
16- realtek,in2-differential
17 Boolean. Indicate MIC1/2 input are differential, rather than single-ended.
18
19- realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
20
21Example:
22
23rt5640 {
24 compatible = "realtek,rt5640";
25 reg = <0x1c>;
26 interrupt-parent = <&gpio>;
27 interrupts = <TEGRA_GPIO(W, 3) GPIO_ACTIVE_HIGH>;
28 realtek,ldo1-en-gpios =
29 <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
30};