[PATCH 2/2] ASoC: cs4341: Add DT bindings documentation for CS4341 DAC

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This patch adds DT bindings documentation for Cirrus Logic
CS4341 DAC.

Signed-off-by: Alexander Shiyan <shc_work@xxxxxxx>
---
 Documentation/devicetree/bindings/sound/cs4341.txt | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/cs4341.txt

diff --git a/Documentation/devicetree/bindings/sound/cs4341.txt b/Documentation/devicetree/bindings/sound/cs4341.txt
new file mode 100644
index 000000000000..12b4aa8ef0db
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cs4341.txt
@@ -0,0 +1,22 @@
+Cirrus Logic CS4341 audio DAC
+
+This device supports both I2C and SPI (configured with pin strapping
+on the board).
+
+Required properties:
+  - compatible: "cirrus,cs4341a"
+  - reg : the I2C address of the device for I2C, the chip select
+          number for SPI.
+
+For required properties on I2C-bus, please consult
+Documentation/devicetree/bindings/i2c/i2c.txt
+For required properties on SPI-bus, please consult
+Documentation/devicetree/bindings/spi/spi-bus.txt
+
+Example:
+	codec: cs4341@0 {
+		#sound-dai-cells = <0>;
+		compatible = "cirrus,cs4341a";
+		reg = <0>;
+		spi-max-frequency = <6000000>;
+	};
-- 
2.13.0

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