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20fb277250
Add properties for some of the more important bits of platform data and fill out the binding document. Not all of the current platform data is suitable for the sort of fixed configuration that is done using DT, some of it should have runtime mechanisms added instead and some is unlikely to ever be used in practical systems. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
75 lines
2.6 KiB
Plaintext
75 lines
2.6 KiB
Plaintext
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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- AVDD2-supply, DBVDD1-supply, DBVDD2-supply, DBVDD3-supply, CPVDD-supply,
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SPKVDD1-supply, SPKVDD2-supply : power supplies for the device, as covered
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in Documentation/devicetree/bindings/regulator/regulator.txt
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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-parent : The parent interrupt controller.
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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/interrupts.txt
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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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Example:
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codec: wm8994@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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AVDD2-supply = <®ulator>;
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CPVDD-supply = <®ulator>;
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DBVDD1-supply = <®ulator>;
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DBVDD2-supply = <®ulator>;
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DBVDD3-supply = <®ulator>;
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SPKVDD1-supply = <®ulator>;
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SPKVDD2-supply = <®ulator>;
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};
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