This is just a very simple initial binding, supporting only registering
the chip and the GPIOs. More features will be added as support for
device tree in the driver is expanded.
Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/mfd/wm831x.txt | 31 ++++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/wm831x.txt
diff --git a/Documentation/devicetree/bindings/mfd/wm831x.txt b/Documentation/devicetree/bindings/mfd/wm831x.txt
new file mode 100644
index 0000000..9771022
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/wm831x.txt
@@ -0,0 +1,31 @@
+Cirrus Logic/Wolfson Microelectronics wm831x PMICs
+
+System PMICs with a wide range of additional features.
+
+Required properties:
+
+ - compatible : One of the following chip-specific strings:
+ "wlf,wm8310"
+ "wlf,wm8311"
+ "wlf,wm8312"
+ "wlf,wm8320"
+ "wlf,wm8321"
+ "wlf,wm8325"
+ "wlf,wm8326"
+
+ - reg : I2C slave address when connected using I2C, chip select number when
+ using 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).
+
+Example:
+
+wm8310: wm8310@36 {
+ compatible = "wlf,wm8310";
+ reg = <0x36>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+};
--
2.1.4
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