[alsa-devel] [PATCH v2 1/2] doc: cx2092x: Add DT bingings doc for CX2092X DSP

[simon.ho.cnxt at gmail.com]

From: Simon Ho <simon.ho at conexant.com>

Initial version of CX2092X device tree bindings document.

Signed-off-by: Simon Ho <simon.ho at conexant.com>
---
 .../devicetree/bindings/sound/cnxt,cx2092x.txt     | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/cnxt,cx2092x.txt

diff --git a/Documentation/devicetree/bindings/sound/cnxt,cx2092x.txt b/Documentation/devicetree/bindings/sound/cnxt,cx2092x.txt
new file mode 100644
index 0000000..72928bd
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cnxt,cx2092x.txt
@@ -0,0 +1,29 @@
+Conexant CX20921/CX209724 Voice Processor DSP
+
+The devices supports both the I2C and SPI bus.
+
+Required properties:
+
+  - compatible: One of "cnxt,cx20921", "cnxt,cx20924".
+  - reg: The I2C address of the device for I2C, it should be <0x41>
+
+Optional properties:
+
+  - reset-gpios: A GPIO spec to define which pin is connected to the chip's
+		 !RESET pin. If specified, the driver will assert a hardware
+		 reset at probe time.
+
+CODEC input pins:
+  "MIC"	- Microphone input
+
+Example:
+
+codec_i2c: cx20921 at 41 {
+	compatible = "cnxt,cx20921";
+	reg = <0x41>;
+	reset-gpios = <&gpio1 23 0>;
+};
+
+codec_spi: cx20924 at 0 {
+	compatible = "cnxt,cx20924";
+};
-- 
2.7.4