| Brian Austin | 3a85ca9 | 2013-11-15 09:35:34 -0600 | [diff] [blame] | 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 | }; |