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 - clocks: The phandle of the master clock to the CODEC
16 - clock-names: Should be "mclk"
17
18 - realtek,in1-differential
19 - realtek,in2-differential
20 - realtek,in3-differential
21 Boolean. Indicate MIC1/2/3 input are differential, rather than single-ended.
22
23 - realtek,lout-differential
24 Boolean. Indicate LOUT output is differential, rather than stereo.
25
26 - realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
27
28 - realtek,dmic1-data-pin
29 0: dmic1 is not used
30 1: using IN1P pin as dmic1 data pin
31 2: using GPIO3 pin as dmic1 data pin
32
33 - realtek,dmic2-data-pin
34 0: dmic2 is not used
35 1: using IN1N pin as dmic2 data pin
36 2: using GPIO4 pin as dmic2 data pin
37
38 - realtek,jack-detect-source
39 u32. Valid values:
40 0: jack-detect is not used
41 1: Use GPIO1 for jack-detect
42 2: Use JD1_IN4P for jack-detect
43 3: Use JD2_IN4N for jack-detect
44 4: Use GPIO2 for jack-detect
45 5: Use GPIO3 for jack-detect
46 6: Use GPIO4 for jack-detect
47
48 - realtek,jack-detect-not-inverted
49 bool. Normal jack-detect switches give an inverted signal, set this bool
50 in the rare case you've a jack-detect switch which is not inverted.
51
52 - realtek,over-current-threshold-microamp
53 u32, micbias over-current detection threshold in µA, valid values are
54 600, 1500 and 2000µA.
55
56 - realtek,over-current-scale-factor
57 u32, micbias over-current detection scale-factor, valid values are:
58 0: Scale current by 0.5
59 1: Scale current by 0.75
60 2: Scale current by 1.0
61 3: Scale current by 1.5
62
63 Pins on the device (for linking into audio routes) for RT5639/RT5640:
64
65 * DMIC1
66 * DMIC2
67 * MICBIAS1
68 * IN1P
69 * IN1N
70 * IN2P
71 * IN2N
72 * IN3P
73 * IN3N
74 * HPOL
75 * HPOR
76 * LOUTL
77 * LOUTR
78 * SPOLP
79 * SPOLN
80 * SPORP
81 * SPORN
82
83 Additional pins on the device for RT5640:
84
85 * MONOP
86 * MONON
87
88 Example:
89
90 rt5640 {
91 compatible = "realtek,rt5640";
92 reg = <0x1c>;
93 interrupt-parent = <&gpio>;
94 interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_HIGH>;
95 realtek,ldo1-en-gpios =
96 <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
97 };
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