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+WM1811/WM8994/WM8958 audio CODEC
+
+These devices support both I2C and SPI (configured with pin strapping
+on the board).
+
+Required properties:
+
+ - compatible : One of "wlf,wm1811", "wlf,wm8994" or "wlf,wm8958".
+
+ - reg : the I2C address of the device for I2C, the chip select
+ number for SPI.
+
+ - 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).
+
+ - power supplies for the device, as covered in
+ Documentation/devicetree/bindings/regulator/regulator.txt, depending
+ on compatible:
+ - for wlf,wm1811 and wlf,wm8958:
+ AVDD1-supply, AVDD2-supply, DBVDD1-supply, DBVDD2-supply, DBVDD3-supply,
+ DCVDD-supply, CPVDD-supply, SPKVDD1-supply, SPKVDD2-supply
+ - for wlf,wm8994:
+ AVDD1-supply, AVDD2-supply, DBVDD-supply, DCVDD-supply, CPVDD-supply,
+ SPKVDD1-supply, SPKVDD2-supply
+
+Optional properties:
+
+ - interrupts : The interrupt line the IRQ signal for the device is
+ connected to. This is optional, if it is not connected then none
+ of the interrupt related properties should be specified.
+ - interrupt-controller : These devices contain interrupt controllers
+ and may provide interrupt services to other devices if they have an
+ interrupt line connected.
+ - #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
+
+ - clocks : A list of up to two phandle and clock specifier pairs
+ - clock-names : A list of clock names sorted in the same order as clocks.
+ Valid clock names are "MCLK1" and "MCLK2".
+
+ - wlf,gpio-cfg : A list of GPIO configuration register values. If absent,
+ no configuration of these registers is performed. If any value is
+ over 0xffff then the register will be left as default. If present 11
+ values must be supplied.
+
+ - wlf,micbias-cfg : Two MICBIAS register values for WM1811 or
+ WM8958. If absent the register defaults will be used.
+
+ - wlf,ldo1ena : GPIO specifier for control of LDO1ENA input to device.
+ - wlf,ldo2ena : GPIO specifier for control of LDO2ENA input to device.
+
+ - wlf,lineout1-se : If present LINEOUT1 is in single ended mode.
+ - wlf,lineout2-se : If present LINEOUT2 is in single ended mode.
+
+ - wlf,lineout1-feedback : If present LINEOUT1 has common mode feedback
+ connected.
+ - wlf,lineout2-feedback : If present LINEOUT2 has common mode feedback
+ connected.
+
+ - wlf,ldoena-always-driven : If present LDOENA is always driven.
+
+ - wlf,spkmode-pu : If present enable the internal pull-up resistor on
+ the SPKMODE pin.
+
+ - wlf,csnaddr-pd : If present enable the internal pull-down resistor on
+ the CS/ADDR pin.
+
+Pins on the device (for linking into audio routes):
+
+ * IN1LN
+ * IN1LP
+ * IN2LN
+ * IN2LP:VXRN
+ * IN1RN
+ * IN1RP
+ * IN2RN
+ * IN2RP:VXRP
+ * SPKOUTLP
+ * SPKOUTLN
+ * SPKOUTRP
+ * SPKOUTRN
+ * HPOUT1L
+ * HPOUT1R
+ * HPOUT2P
+ * HPOUT2N
+ * LINEOUT1P
+ * LINEOUT1N
+ * LINEOUT2P
+ * LINEOUT2N
+
+Example:
+
+wm8994: codec@1a {
+ compatible = "wlf,wm8994";
+ reg = <0x1a>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ lineout1-se;
+
+ AVDD1-supply = <&regulator>;
+ AVDD2-supply = <&regulator>;
+ CPVDD-supply = <&regulator>;
+ DBVDD-supply = <&regulator>;
+ DCVDD-supply = <&regulator>;
+ SPKVDD1-supply = <&regulator>;
+ SPKVDD2-supply = <&regulator>;
+};