[PATCH v3 2/3] ASoC: Documentation: Add google,cros-ec-codec

[Cheng-Yi Chiang <cychiang@chromium.org>]

Add documentation for Chrome EC codec driver.

Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
---
 +Rob Herring for reviewing this patch.

 Hi Rob,
   Could you please take a look ?
 Thanks!

 .../bindings/sound/google,cros-ec-codec.txt   | 24 +++++++++++++++++++
 MAINTAINERS                                   |  5 ++++
 2 files changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt

diff --git a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt
new file mode 100644
index 0000000000000..57718382b3a36
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt
@@ -0,0 +1,24 @@
+* Audio codec controlled by ChromeOS EC
+
+Google's ChromeOS EC codec is a digital mic codec provided by the
+Embedded Controller (EC) and is controlled via a host-command interface.
+
+An EC codec node should only be found as a sub-node of the EC node (see
+Documentation/devicetree/bindings/mfd/cros-ec.txt).
+
+Required properties:
+- compatible: Must contain "google,cros-ec-codec"
+- #sound-dai-cells: Should be 1. The cell specifies number of DAIs.
+
+Example:
+
+cros-ec@0 {
+	compatible = "google,cros-ec-spi";
+
+	...
+
+	cros_ec_codec: ec-codec {
+		compatible = "google,cros-ec-codec";
+		#sound-dai-cells = <1>;
+	};
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index 5b9c6af98283b..05e1922624e58 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3636,6 +3636,11 @@ S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform.git
 F:	drivers/platform/chrome/
 
+CHROMEOS EC CODEC DRIVER
+M:	Cheng-Yi Chiang <cychiang@chromium.org>
+S:	Maintained
+F:	Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt
+
 CIRRUS LOGIC AUDIO CODEC DRIVERS
 M:	Brian Austin <brian.austin@cirrus.com>
 M:	Paul Handrigan <Paul.Handrigan@cirrus.com>
-- 
2.20.1.415.g653613c723-goog