1 CS42L52 audio CODEC 1 CS42L52 audio CODEC
2 2
3 Required properties: 3 Required properties:
4 4
5 - compatible : "cirrus,cs42l52" 5 - compatible : "cirrus,cs42l52"
6 6
7 - reg : the I2C address of the device for I2 7 - reg : the I2C address of the device for I2C
8 8
9 Optional properties: 9 Optional properties:
10 10
11 - cirrus,reset-gpio : GPIO controller's phan 11 - cirrus,reset-gpio : GPIO controller's phandle and the number
12 of the GPIO used to reset the codec. 12 of the GPIO used to reset the codec.
13 13
14 - cirrus,chgfreq-divisor : Values used to se 14 - cirrus,chgfreq-divisor : Values used to set the Charge Pump Frequency.
15 Allowable values of 0x00 through 0x0F. These 15 Allowable values of 0x00 through 0x0F. These are raw values written to the
16 register, not the actual frequency. The freq 16 register, not the actual frequency. The frequency is determined by the following.
17 Frequency = (64xFs)/(N+2) 17 Frequency = (64xFs)/(N+2)
18 N = chgfreq_val 18 N = chgfreq_val
19 Fs = Sample Rate (variable) 19 Fs = Sample Rate (variable)
20 20
21 - cirrus,mica-differential-cfg : boolean, If 21 - cirrus,mica-differential-cfg : boolean, If present, then the MICA input is configured
22 as a differential input. If not present then 22 as a differential input. If not present then the MICA input is configured as
23 Single-ended input. Single-ended mode allows 23 Single-ended input. Single-ended mode allows for MIC1 or MIC2 muxing for input.
24 24
25 - cirrus,micb-differential-cfg : boolean, If 25 - cirrus,micb-differential-cfg : boolean, If present, then the MICB input is configured
26 as a differential input. If not present then 26 as a differential input. If not present then the MICB input is configured as
27 Single-ended input. Single-ended mode allows 27 Single-ended input. Single-ended mode allows for MIC1 or MIC2 muxing for input.
28 28
29 - cirrus,micbias-lvl: Set the output voltage 29 - cirrus,micbias-lvl: Set the output voltage level on the MICBIAS Pin
30 0 = 0.5 x VA 30 0 = 0.5 x VA
31 1 = 0.6 x VA 31 1 = 0.6 x VA
32 2 = 0.7 x VA 32 2 = 0.7 x VA
33 3 = 0.8 x VA 33 3 = 0.8 x VA
34 4 = 0.83 x VA 34 4 = 0.83 x VA
35 5 = 0.91 x VA 35 5 = 0.91 x VA
36 36
37 Example: 37 Example:
38 38
39 codec: codec@4a { 39 codec: codec@4a {
40 compatible = "cirrus,cs42l52"; 40 compatible = "cirrus,cs42l52";
41 reg = <0x4a>; 41 reg = <0x4a>;
42 reset-gpio = <&gpio 10 0>; 42 reset-gpio = <&gpio 10 0>;
43 cirrus,chgfreq-divisor = <0x05>; 43 cirrus,chgfreq-divisor = <0x05>;
44 cirrus.mica-differential-cfg; 44 cirrus.mica-differential-cfg;
45 cirrus,micbias-lvl = <5>; 45 cirrus,micbias-lvl = <5>;
46 }; 46 };
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