1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/sound/dmic- 4 $id: http://devicetree.org/schemas/sound/dmic-codec.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Generic PDM Digital microphone (DMIC) c 7 title: Generic PDM Digital microphone (DMIC) codec
8 8
9 maintainers: 9 maintainers:
10 - Arnaud Pouliquen <arnaud.pouliquen@foss.st. 10 - Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
11 11
12 allOf: 12 allOf:
13 - $ref: dai-common.yaml# 13 - $ref: dai-common.yaml#
14 14
15 properties: 15 properties:
16 compatible: 16 compatible:
17 const: dmic-codec 17 const: dmic-codec
18 18
19 '#sound-dai-cells': 19 '#sound-dai-cells':
20 const: 0 20 const: 0
21 21
22 dmicen-gpios: 22 dmicen-gpios:
23 description: GPIO specifier for DMIC to co 23 description: GPIO specifier for DMIC to control start and stop
24 maxItems: 1 24 maxItems: 1
25 25
26 num-channels: 26 num-channels:
27 description: Number of microphones on this 27 description: Number of microphones on this DAI
28 $ref: /schemas/types.yaml#/definitions/uin 28 $ref: /schemas/types.yaml#/definitions/uint32
29 minimum: 1 29 minimum: 1
30 maximum: 8 30 maximum: 8
31 default: 8 31 default: 8
32 32
33 modeswitch-delay-ms: 33 modeswitch-delay-ms:
34 description: Delay (in ms) to complete DMI 34 description: Delay (in ms) to complete DMIC mode switch
35 35
36 wakeup-delay-ms: 36 wakeup-delay-ms:
37 description: Delay (in ms) after enabling 37 description: Delay (in ms) after enabling the DMIC
38 38
39 required: 39 required:
40 - compatible 40 - compatible
41 41
42 unevaluatedProperties: false 42 unevaluatedProperties: false
43 43
44 examples: 44 examples:
45 - | 45 - |
46 #include <dt-bindings/gpio/gpio.h> 46 #include <dt-bindings/gpio/gpio.h>
47 47
48 dmic { 48 dmic {
49 compatible = "dmic-codec"; 49 compatible = "dmic-codec";
50 dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_H 50 dmicen-gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
51 num-channels = <1>; 51 num-channels = <1>;
52 wakeup-delay-ms = <50>; 52 wakeup-delay-ms = <50>;
53 modeswitch-delay-ms = <35>; 53 modeswitch-delay-ms = <35>;
54 }; 54 };
55 ... 55 ...
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