projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5d680b3a SW |
1 | WM8903 audio CODEC |
| 2 | ||
| 3 | This device supports I2C only. | |
| 4 | ||
| 5 | Required properties: | |
| 6 | ||
| 7 | - compatible : "wlf,wm8903" | |
| 8 | ||
| 9 | - reg : the I2C address of the device. | |
| 10 | ||
| 11 | - gpio-controller : Indicates this device is a GPIO controller. | |
| 12 | ||
| 13 | - #gpio-cells : Should be two. The first cell is the pin number and the | |
| 14 | second cell is used to specify optional parameters (currently unused). | |
| 15 | ||
| 16 | Optional properties: | |
| 17 | ||
| 18 | - interrupts : The interrupt line the codec is connected to. | |
| 19 | ||
| 20 | - micdet-cfg : Default register value for R6 (Mic Bias). If absent, the | |
| 21 | default is 0. | |
| 22 | ||
| 23 | - micdet-delay : The debounce delay for microphone detection in mS. If | |
| 24 | absent, the default is 100. | |
| 25 | ||
| 26 | - gpio-cfg : A list of GPIO configuration register values. The list must | |
| 27 | be 5 entries long. If absent, no configuration of these registers is | |
| 28 | performed. If any entry has the value 0xffffffff, that GPIO's | |
| 29 | configuration will not be modified. | |
| 30 | ||
| d3318358 MB |
31 | Pins on the device (for linking into audio routes): |
| 32 | ||
| 33 | * IN1L | |
| 34 | * IN1R | |
| 35 | * IN2L | |
| 36 | * IN2R | |
| 37 | * IN3L | |
| 38 | * IN3R | |
| 39 | * DMICDAT | |
| 40 | * HPOUTL | |
| 41 | * HPOUTR | |
| 42 | * LINEOUTL | |
| 43 | * LINEOUTR | |
| 44 | * LOP | |
| 45 | * LON | |
| 46 | * ROP | |
| 47 | * RON | |
| 48 | * MICBIAS | |
| 49 | ||
| 5d680b3a SW |
50 | Example: |
| 51 | ||
| 52 | codec: wm8903@1a { | |
| 53 | compatible = "wlf,wm8903"; | |
| 54 | reg = <0x1a>; | |
| 55 | interrupts = < 347 >; | |
| 56 | ||
| 57 | gpio-controller; | |
| 58 | #gpio-cells = <2>; | |
| 59 | ||
| 60 | micdet-cfg = <0>; | |
| 61 | micdet-delay = <100>; | |
| 62 | gpio-cfg = < | |
| 63 | 0x0600 /* DMIC_LR, output */ | |
| 64 | 0x0680 /* DMIC_DAT, input */ | |
| 65 | 0x0000 /* GPIO, output, low */ | |
| 66 | 0x0200 /* Interrupt, output */ | |
| 67 | 0x01a0 /* BCLK, input, active high */ | |
| 68 | >; | |
| 69 | }; |