90 lines
3.2 KiB
Plaintext
Executable file
90 lines
3.2 KiB
Plaintext
Executable file
WM1811/WM8994/WM8958 audio CODEC
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These devices support both I2C and SPI (configured with pin strapping
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on the board).
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Required properties:
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- compatible : One of "wlf,wm1811", "wlf,wm8994" or "wlf,wm8958".
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- reg : the I2C address of the device for I2C, the chip select
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number for SPI.
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- gpio-controller : Indicates this device is a GPIO controller.
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- #gpio-cells : Must be 2. The first cell is the pin number and the
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second cell is used to specify optional parameters (currently unused).
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- power supplies for the device, as covered in
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Documentation/devicetree/bindings/regulator/regulator.txt, depending
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on compatible:
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- for wlf,wm1811 and wlf,wm8958:
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AVDD1-supply, AVDD2-supply, DBVDD1-supply, DBVDD2-supply, DBVDD3-supply,
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DCVDD-supply, CPVDD-supply, SPKVDD1-supply, SPKVDD2-supply
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- for wlf,wm8994:
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AVDD1-supply, AVDD2-supply, DBVDD-supply, DCVDD-supply, CPVDD-supply,
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SPKVDD1-supply, SPKVDD2-supply
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Optional properties:
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- interrupts : The interrupt line the IRQ signal for the device is
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connected to. This is optional, if it is not connected then none
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of the interrupt related properties should be specified.
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- interrupt-controller : These devices contain interrupt controllers
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and may provide interrupt services to other devices if they have an
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interrupt line connected.
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- #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
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The first cell is the IRQ number.
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The second cell is the flags, encoded as the trigger masks from
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Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
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- clocks : A list of up to two phandle and clock specifier pairs
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- clock-names : A list of clock names sorted in the same order as clocks.
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Valid clock names are "MCLK1" and "MCLK2".
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- wlf,gpio-cfg : A list of GPIO configuration register values. If absent,
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no configuration of these registers is performed. If any value is
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over 0xffff then the register will be left as default. If present 11
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values must be supplied.
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- wlf,micbias-cfg : Two MICBIAS register values for WM1811 or
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WM8958. If absent the register defaults will be used.
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- wlf,ldo1ena : GPIO specifier for control of LDO1ENA input to device.
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- wlf,ldo2ena : GPIO specifier for control of LDO2ENA input to device.
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- wlf,lineout1-se : If present LINEOUT1 is in single ended mode.
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- wlf,lineout2-se : If present LINEOUT2 is in single ended mode.
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- wlf,lineout1-feedback : If present LINEOUT1 has common mode feedback
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connected.
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- wlf,lineout2-feedback : If present LINEOUT2 has common mode feedback
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connected.
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- wlf,ldoena-always-driven : If present LDOENA is always driven.
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- wlf,spkmode-pu : If present enable the internal pull-up resistor on
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the SPKMODE pin.
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- wlf,csnaddr-pd : If present enable the internal pull-down resistor on
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the CS/ADDR pin.
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Example:
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wm8994: codec@1a {
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compatible = "wlf,wm8994";
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reg = <0x1a>;
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gpio-controller;
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#gpio-cells = <2>;
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lineout1-se;
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AVDD1-supply = <®ulator>;
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AVDD2-supply = <®ulator>;
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CPVDD-supply = <®ulator>;
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DBVDD-supply = <®ulator>;
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DCVDD-supply = <®ulator>;
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SPKVDD1-supply = <®ulator>;
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SPKVDD2-supply = <®ulator>;
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};
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