Commit | Line | Data |
---|---|---|
3bb40619 BA |
1 | CS42L52 audio CODEC |
2 | ||
3 | Required properties: | |
4 | ||
5 | - compatible : "cirrus,cs42l56" | |
6 | ||
7 | - reg : the I2C address of the device for I2C | |
8 | ||
9 | - VA-supply, VCP-supply, VLDO-supply : power supplies for the device, | |
10 | as covered in Documentation/devicetree/bindings/regulator/regulator.txt. | |
11 | ||
12 | Optional properties: | |
13 | ||
14 | - cirrus,gpio-nreset : GPIO controller's phandle and the number | |
15 | of the GPIO used to reset the codec. | |
16 | ||
17 | - cirrus,chgfreq-divisor : Values used to set the Charge Pump Frequency. | |
18 | Allowable values of 0x00 through 0x0F. These are raw values written to the | |
19 | register, not the actual frequency. The frequency is determined by the following. | |
20 | Frequency = MCLK / 4 * (N+2) | |
21 | N = chgfreq_val | |
22 | MCLK = Where MCLK is the frequency of the mclk signal after the MCLKDIV2 circuit. | |
23 | ||
24 | - cirrus,ain1a-ref-cfg, ain1b-ref-cfg : boolean, If present, AIN1A or AIN1B are configured | |
25 | as a pseudo-differential input referenced to AIN1REF/AIN3A. | |
26 | ||
27 | - cirrus,ain2a-ref-cfg, ain2b-ref-cfg : boolean, If present, AIN2A or AIN2B are configured | |
28 | as a pseudo-differential input referenced to AIN2REF/AIN3B. | |
29 | ||
30 | - cirrus,micbias-lvl: Set the output voltage level on the MICBIAS Pin. | |
31 | 0 = 0.5 x VA | |
32 | 1 = 0.6 x VA | |
33 | 2 = 0.7 x VA | |
34 | 3 = 0.8 x VA | |
35 | 4 = 0.83 x VA | |
36 | 5 = 0.91 x VA | |
37 | ||
38 | - cirrus,adaptive-pwr-cfg : Configures how the power to the Headphone and Lineout | |
39 | Amplifiers adapt to the output signal levels. | |
40 | 0 = Adapt to Volume Mode. Voltage level determined by the sum of the relevant volume settings. | |
41 | 1 = Fixed - Headphone and Line Amp supply = + or - VCP/2. | |
42 | 2 = Fixed - Headphone and Line Amp supply = + or - VCP. | |
43 | 3 = Adapted to Signal; Voltage level is dynamically determined by the output signal. | |
44 | ||
45 | - cirrus,hpf-left-freq, hpf-right-freq : Sets the corner frequency (-3dB point) for the internal High-Pass | |
46 | Filter. | |
47 | 0 = 1.8Hz | |
48 | 1 = 119Hz | |
49 | 2 = 236Hz | |
50 | 3 = 464Hz | |
51 | ||
52 | ||
53 | Example: | |
54 | ||
55 | codec: codec@4b { | |
56 | compatible = "cirrus,cs42l56"; | |
57 | reg = <0x4b>; | |
58 | gpio-reset = <&gpio 10 0>; | |
59 | cirrus,chgfreq-divisor = <0x05>; | |
60 | cirrus.ain1_ref_cfg; | |
61 | cirrus,micbias-lvl = <5>; | |
62 | VA-supply = <®_audio>; | |
63 | }; |