Thread (1 message) flat view 1 message, 1 author, 2019-01-21

Re: [PATCH v4 1/2] ASoC: Documentation: Add google, cros-ec-codec

From: Enric Balletbo Serra <eballetbo@gmail.com>
Date: 2019-01-21 18:15:07
Also in: alsa-devel, lkml

+ devicetree@vger.kernel.org, Rob Herring [off-list ref] and
Mark Rutland [off-list ref]

Missatge de Cheng-Yi Chiang [off-list ref] del dia ds., 19 de
gen. 2019 a les 12:34:
quoted hunk
Add documentation for Chrome EC codec driver.

Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
---
 Change in v4:
 - Add a property max-dmic-gain so we can configure maximum gain on dmic.
 - Add Guenter to the reviewer list.

 .../bindings/sound/google,cros-ec-codec.txt   | 26 +++++++++++++++++++
 MAINTAINERS                                   |  7 +++++
 2 files changed, 33 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 000000000000..1084f7f22eea
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt
@@ -0,0 +1,26 @@
+* 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.
+- max-dmic-gain: A number for maximum gain in dB on digital microphone.
+
+Example:
+
+cros-ec@0 {
+       compatible = "google,cros-ec-spi";
+
+       ...
+
+       cros_ec_codec: ec-codec {
+               compatible = "google,cros-ec-codec";
+               #sound-dai-cells = <1>;
+               max-dmic-gain = <43>;
+       };
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index 4d04cebb4a71..a5678e4041e9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3688,6 +3688,13 @@ N:       cros_ec
 N:     cros-ec
 F:     drivers/power/supply/cros_usbpd-charger.c

+CHROMEOS EC CODEC DRIVER
+M:     Cheng-Yi Chiang <cychiang@chromium.org>
+S:     Maintained
+R:     Enric Balletbo i Serra <enric.balletbo@collabora.com>
+R:     Guenter Roeck <groeck@chromium.org>
+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>
--
2.20.1.321.g9e740568ce-goog

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