1 files changed, 57 insertions, 1 deletions

diff --git a/Documentation/devicetree/bindings/sound/wm8994.txt b/Documentation/devicetree/bindings/sound/wm8994.txt
index 7a7eb1e7bda6..f2f3e80934d2 100644
--- a/Documentation/devicetree/bindings/sound/wm8994.txt
+++ b/Documentation/devicetree/bindings/sound/wm8994.txt
@@ -5,14 +5,70 @@ on the board).
 
 Required properties:
 
-  - compatible : "wlf,wm1811", "wlf,wm8994", "wlf,wm8958"
+  - 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).
+
+  - AVDD2-supply, DBVDD1-supply, DBVDD2-supply, DBVDD3-supply, CPVDD-supply,
+    SPKVDD1-supply, SPKVDD2-supply : power supplies for the device, as covered
+    in Documentation/devicetree/bindings/regulator/regulator.txt
+
+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-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
+
+  - 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.
+
 Example:
 
 codec: wm8994@1a {
 	compatible = "wlf,wm8994";
 	reg = <0x1a>;
+
+	gpio-controller;
+	#gpio-cells = <2>;
+
+	lineout1-se;
+
+	AVDD2-supply = <&regulator>;
+	CPVDD-supply = <&regulator>;
+	DBVDD1-supply = <&regulator>;
+	DBVDD2-supply = <&regulator>;
+	DBVDD3-supply = <&regulator>;
+	SPKVDD1-supply = <&regulator>;
+	SPKVDD2-supply = <&regulator>;
 };