| Wolfson Arizona class audio SoCs |
| |
| These devices are audio SoCs with extensive digital capabilites and a range |
| of analogue I/O. |
| |
| Required properties: |
| |
| - compatible : One of the following chip-specific strings: |
| "wlf,wm5102" |
| "wlf,wm5110" |
| "wlf,wm8997" |
| - reg : I2C slave address when connected using I2C, chip select number when |
| using SPI. |
| |
| - interrupts : The interrupt line the /IRQ signal for the device is |
| connected to. |
| - interrupt-controller : Arizona class devices contain interrupt controllers |
| and may provide interrupt services to other devices. |
| - interrupt-parent : The parent interrupt controller. |
| - #interrupt-cells: the number of cells to describe an IRQ, this should be 2. |
| The first cell is the IRQ number. |
| The second cell is the flags, encoded as the trigger masks from |
| Documentation/devicetree/bindings/interrupts.txt |
| |
| - gpio-controller : Indicates this device is a GPIO controller. |
| - #gpio-cells : Must be 2. The first cell is the pin number and the |
| second cell is used to specify optional parameters (currently unused). |
| |
| - AVDD-supply, DBVDD1-supply, DBVDD2-supply, DBVDD3-supply (wm5102, wm5110), |
| CPVDD-supply, SPKVDDL-supply (wm5102, wm5110), SPKVDDR-supply (wm5102, |
| wm5110), SPKVDD-supply (wm8997) : Power supplies for the device, as covered |
| in Documentation/devicetree/bindings/regulator/regulator.txt |
| |
| Optional properties: |
| |
| - wlf,reset : GPIO specifier for the GPIO controlling /RESET |
| - wlf,ldoena : GPIO specifier for the GPIO controlling LDOENA |
| |
| - wlf,gpio-defaults : A list of GPIO configuration register values. If |
| absent, no configuration of these registers is performed. If any |
| entry has a value that is out of range for a 16 bit register then |
| the chip default will be used. If present exactly five values must |
| be specified. |
| |
| - wlf,inmode : A list of INn_MODE register values, where n is the number |
| of input signals. Valid values are 0 (Differential), 1 (Single-ended) and |
| 2 (Digital Microphone). If absent, INn_MODE registers set to 0 by default. |
| If present, values must be specified less than or equal to the number of |
| input singals. If values less than the number of input signals, elements |
| that has not been specifed are set to 0 by default. |
| |
| - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if |
| they are being externally supplied. As covered in |
| Documentation/devicetree/bindings/regulator/regulator.txt |
| |
| Optional subnodes: |
| - ldo1 : Initial data for the LDO1 regulator, as covered in |
| Documentation/devicetree/bindings/regulator/regulator.txt |
| - micvdd : Initial data for the MICVDD regulator, as covered in |
| Documentation/devicetree/bindings/regulator/regulator.txt |
| |
| Example: |
| |
| codec: wm5102@1a { |
| compatible = "wlf,wm5102"; |
| reg = <0x1a>; |
| interrupts = <347>; |
| interrupt-controller; |
| #interrupt-cells = <2>; |
| interrupt-parent = <&gic>; |
| |
| gpio-controller; |
| #gpio-cells = <2>; |
| |
| wlf,gpio-defaults = < |
| 0x00000000 /* AIF1TXLRCLK */ |
| 0xffffffff |
| 0xffffffff |
| 0xffffffff |
| 0xffffffff |
| >; |
| }; |