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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
>;
};
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