| # 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>; |
| }; |
| ... |
