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[PATCH v4 2/2] ASoC: ak5558: Add bindings for AK5558 ADC




Document the bindings for AK5558 ADC.

Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxx>
---
 Documentation/devicetree/bindings/sound/ak5558.txt | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/ak5558.txt

diff --git a/Documentation/devicetree/bindings/sound/ak5558.txt b/Documentation/devicetree/bindings/sound/ak5558.txt
new file mode 100644
index 0000000..7d67ca6
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/ak5558.txt
@@ -0,0 +1,22 @@
+AK5558 8 channel differential 32-bit delta-sigma ADC
+
+This device supports I2C mode only.
+
+Required properties:
+
+- compatible : "asahi-kasei,ak5558"
+- reg : The I2C address of the device.
+
+Optional properties:
+
+- reset-gpios: A GPIO specifier for the power down & reset pin.
+
+Example:
+
+&i2c {
+	ak5558: adc@10 {
+		compatible = "asahi-kasei,ak5558";
+		reg = <0x10>;
+		reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+	};
+};
-- 
2.7.4