projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3a85ca9d BA |
1 | CS42L52 audio CODEC |
| 2 | ||
| 3 | Required properties: | |
| 4 | ||
| 5 | - compatible : "cirrus,cs42l52" | |
| 6 | ||
| 7 | - reg : the I2C address of the device for I2C | |
| 8 | ||
| 9 | Optional properties: | |
| 10 | ||
| 11 | - cirrus,reset-gpio : GPIO controller's phandle and the number | |
| 12 | of the GPIO used to reset the codec. | |
| 13 | ||
| 14 | - cirrus,chgfreq-divisor : Values used to set the Charge Pump Frequency. | |
| 15 | Allowable values of 0x00 through 0x0F. These are raw values written to the | |
| 16 | register, not the actual frequency. The frequency is determined by the following. | |
| 17 | Frequency = (64xFs)/(N+2) | |
| 18 | N = chgfreq_val | |
| 19 | Fs = Sample Rate (variable) | |
| 20 | ||
| 21 | - cirrus,mica-differential-cfg : boolean, If present, then the MICA input is configured | |
| 22 | as a differential input. If not present then the MICA input is configured as | |
| 23 | Single-ended input. Single-ended mode allows for MIC1 or MIC2 muxing for input. | |
| 24 | ||
| 25 | - cirrus,micb-differential-cfg : boolean, If present, then the MICB input is configured | |
| 26 | as a differential input. If not present then the MICB input is configured as | |
| 27 | Single-ended input. Single-ended mode allows for MIC1 or MIC2 muxing for input. | |
| 28 | ||
| 29 | - cirrus,micbias-lvl: Set the output voltage level on the MICBIAS Pin | |
| 30 | 0 = 0.5 x VA | |
| 31 | 1 = 0.6 x VA | |
| 32 | 2 = 0.7 x VA | |
| 33 | 3 = 0.8 x VA | |
| 34 | 4 = 0.83 x VA | |
| 35 | 5 = 0.91 x VA | |
| 36 | ||
| 37 | Example: | |
| 38 | ||
| 39 | codec: codec@4a { | |
| 40 | compatible = "cirrus,cs42l52"; | |
| 41 | reg = <0x4a>; | |
| 42 | reset-gpio = <&gpio 10 0>; | |
| 43 | cirrus,chgfreq-divisor = <0x05>; | |
| 44 | cirrus.mica-differential-cfg; | |
| 45 | cirrus,micbias-lvl = <5>; | |
| 46 | }; |