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| -rw-r--r-- | Documentation/devicetree/bindings/sound/dmic-codec.yaml | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/dmic-codec.yaml b/Documentation/devicetree/bindings/sound/dmic-codec.yaml new file mode 100644 index 0000000000..59ef0cf6b6 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/dmic-codec.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/dmic-codec.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic PDM Digital microphone (DMIC) codec + +maintainers: + - Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> + +allOf: + - $ref: dai-common.yaml# + +properties: + compatible: + const: dmic-codec + + '#sound-dai-cells': + const: 0 + + dmicen-gpios: + description: GPIO specifier for DMIC to control start and stop + maxItems: 1 + + num-channels: + description: Number of microphones on this DAI + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 1 + maximum: 8 + default: 8 + + modeswitch-delay-ms: + description: Delay (in ms) to complete DMIC mode switch + + wakeup-delay-ms: + description: Delay (in ms) after enabling the DMIC + +required: + - compatible + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + dmic { + compatible = "dmic-codec"; + dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>; + num-channels = <1>; + wakeup-delay-ms = <50>; + modeswitch-delay-ms = <35>; + }; +... |