| WM8903 audio CODEC |
| |
| This device supports I2C only. |
| |
| Required properties: |
| |
| - compatible : "wlf,wm8903" |
| |
| - reg : the I2C address of the device. |
| |
| - gpio-controller : Indicates this device is a GPIO controller. |
| |
| - #gpio-cells : Should be two. The first cell is the pin number and the |
| second cell is used to specify optional parameters (currently unused). |
| |
| Optional properties: |
| |
| - interrupts : The interrupt line the codec is connected to. |
| |
| - micdet-cfg : Default register value for R6 (Mic Bias). If absent, the |
| default is 0. |
| |
| - micdet-delay : The debounce delay for microphone detection in mS. If |
| absent, the default is 100. |
| |
| - gpio-cfg : A list of GPIO configuration register values. The list must |
| be 5 entries long. If absent, no configuration of these registers is |
| performed. If any entry has the value 0xffffffff, that GPIO's |
| configuration will not be modified. |
| |
| Pins on the device (for linking into audio routes): |
| |
| * IN1L |
| * IN1R |
| * IN2L |
| * IN2R |
| * IN3L |
| * IN3R |
| * DMICDAT |
| * HPOUTL |
| * HPOUTR |
| * LINEOUTL |
| * LINEOUTR |
| * LOP |
| * LON |
| * ROP |
| * RON |
| * MICBIAS |
| |
| Example: |
| |
| codec: wm8903@1a { |
| compatible = "wlf,wm8903"; |
| reg = <0x1a>; |
| interrupts = < 347 >; |
| |
| gpio-controller; |
| #gpio-cells = <2>; |
| |
| micdet-cfg = <0>; |
| micdet-delay = <100>; |
| gpio-cfg = < |
| 0x0600 /* DMIC_LR, output */ |
| 0x0680 /* DMIC_DAT, input */ |
| 0x0000 /* GPIO, output, low */ |
| 0x0200 /* Interrupt, output */ |
| 0x01a0 /* BCLK, input, active high */ |
| >; |
| }; |
