diff options
Diffstat (limited to 'Documentation/devicetree/bindings/mfd/arizona.txt')
-rw-r--r-- | Documentation/devicetree/bindings/mfd/arizona.txt | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt new file mode 100644 index 000000000..9b62831fd --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/arizona.txt @@ -0,0 +1,101 @@ +Cirrus Logic/Wolfson Microelectronics Arizona class audio SoCs + +These devices are audio SoCs with extensive digital capabilities and a range +of analogue I/O. + +Required properties: + + - compatible : One of the following chip-specific strings: + "cirrus,cs47l24" + "wlf,wm5102" + "wlf,wm5110" + "wlf,wm8280" + "wlf,wm8997" + "wlf,wm8998" + "wlf,wm1814" + "wlf,wm1831" + + - 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-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/interrupt-controller/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, see ../gpio/gpio.txt + for details. + + - AVDD-supply, DBVDD1-supply, CPVDD-supply : Power supplies for the device, + as covered in Documentation/devicetree/bindings/regulator/regulator.txt + + - DBVDD2-supply, DBVDD3-supply : Additional databus power supplies (wm5102, + wm5110, wm8280, wm8998, wm1814) + + - SPKVDDL-supply, SPKVDDR-supply : Speaker driver power supplies (wm5102, + wm5110, wm8280, wm8998, wm1814) + + - SPKVDD-supply : Speaker driver power supply (wm8997) + + - DCVDD-supply : Main power supply (cs47l24, wm1831) + + - MICVDD-supply : Microphone power supply (cs47l24, wm1831) + +Optional properties: + + - reset-gpios : GPIO specifier for the GPIO controlling /RESET + + - clocks: Should reference the clocks supplied on MCLK1 and MCLK2 + - clock-names: Should contains two strings: + "mclk1" for the clock supplied on MCLK1, recommended to be a high + quality audio reference clock + "mclk2" for the clock supplied on MCLK2, recommended to be an always on + 32k clock + + - wlf,gpio-defaults : A list of GPIO configuration register values. Defines + for the appropriate values can found in <dt-bindings/mfd/arizona.txt>. 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. + + - 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 + (wm5102, wm5110, wm8280, wm8997, wm8998, wm1814) + +Deprecated properties: + + - wlf,reset : GPIO specifier for the GPIO controlling /RESET + +Also see child specific device properties: + Regulator - ../regulator/arizona-regulator.txt + Extcon - ../extcon/extcon-arizona.txt + Sound - ../sound/arizona.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 = < + ARIZONA_GP_FN_TXLRCLK + ARIZONA_GP_DEFAULT + ARIZONA_GP_DEFAULT + ARIZONA_GP_DEFAULT + ARIZONA_GP_DEFAULT + >; +}; |