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494a3503d6
Add documentation for Chrome EC codec driver. Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org> Signed-off-by: Mark Brown <broonie@kernel.org>
27 lines
706 B
Plaintext
27 lines
706 B
Plaintext
* Audio codec controlled by ChromeOS EC
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Google's ChromeOS EC codec is a digital mic codec provided by the
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Embedded Controller (EC) and is controlled via a host-command interface.
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An EC codec node should only be found as a sub-node of the EC node (see
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Documentation/devicetree/bindings/mfd/cros-ec.txt).
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Required properties:
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- compatible: Must contain "google,cros-ec-codec"
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- #sound-dai-cells: Should be 1. The cell specifies number of DAIs.
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- max-dmic-gain: A number for maximum gain in dB on digital microphone.
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Example:
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cros-ec@0 {
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compatible = "google,cros-ec-spi";
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...
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cros_ec_codec: ec-codec {
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compatible = "google,cros-ec-codec";
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#sound-dai-cells = <1>;
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max-dmic-gain = <43>;
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};
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};
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