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[karo-tx-linux.git] / Documentation / devicetree / bindings / sound / rt5640.txt
1 RT5640/RT5639 audio CODEC
2
3 This device supports I2C only.
4
5 Required properties:
6
7 - compatible : One of "realtek,rt5640" or "realtek,rt5639".
8
9 - reg : The I2C address of the device.
10
11 - interrupts : The CODEC's interrupt output.
12
13 Optional 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
21 Pins on the device (for linking into audio routes) for RT5639/RT5640:
22
23   * DMIC1
24   * DMIC2
25   * MICBIAS1
26   * IN1P
27   * IN1R
28   * IN2P
29   * IN2R
30   * HPOL
31   * HPOR
32   * LOUTL
33   * LOUTR
34   * SPOLP
35   * SPOLN
36   * SPORP
37   * SPORN
38
39 Additional pins on the device for RT5640:
40
41   * MONOP
42   * MONON
43
44 Example:
45
46 rt5640 {
47         compatible = "realtek,rt5640";
48         reg = <0x1c>;
49         interrupt-parent = <&gpio>;
50         interrupts = <TEGRA_GPIO(W, 3) GPIO_ACTIVE_HIGH>;
51         realtek,ldo1-en-gpios =
52                 <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
53 };