1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/ti,ts3a227e.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Texas Instruments TS3A227E
8 Autonomous Audio Accessory Detection and Configuration Switch
9
10 maintainers:
11 - Dylan Reid <dgreid@chromium.org>
12
13 description: |
14 The TS3A227E detect headsets of 3-ring and 4-ring standards and
15 switches automatically to route the microphone correctly. It also
16 handles key press detection in accordance with the Android audio
17 headset specification v1.0.
18
19 properties:
20 compatible:
21 enum:
22 - ti,ts3a227e
23
24 reg:
25 const: 0x3b
26
27 interrupts:
28 maxItems: 1
29
30 ti,micbias:
31 $ref: /schemas/types.yaml#/definitions/uint32
32 description: Intended MICBIAS voltage (datasheet section 9.6.7).
33 enum:
34 - 0 # 2.1 V
35 - 1 # 2.2 V
36 - 2 # 2.3 V
37 - 3 # 2.4 V
38 - 4 # 2.5 V
39 - 5 # 2.6 V
40 - 6 # 2.7 V
41 - 7 # 2.8 V
42 default: 1
43
44 ti,debounce-release-ms:
45 description: key release debounce time in ms (datasheet section 9.6.7).
46 enum:
47 - 0
48 - 20
49 default: 20
50
51 ti,debounce-press-ms:
52 description: key press debounce time in ms (datasheet section 9.6.7).
53 enum:
54 - 2
55 - 40
56 - 80
57 - 120
58 default: 80
59
60 ti,debounce-insertion-ms:
61 description: headset insertion debounce time in ms (datasheet section 9.6.5).
62 enum:
63 - 2
64 - 30
65 - 60
66 - 90
67 - 120
68 - 150
69 - 1000
70 - 2000
71 default: 90
72
73 required:
74 - compatible
75 - reg
76 - interrupts
77
78 additionalProperties: false
79
80 examples:
81 - |
82 #include <dt-bindings/interrupt-controller/irq.h>
83 i2c {
84 #address-cells = <1>;
85 #size-cells = <0>;
86 codec: audio-controller@3b {
87 compatible = "ti,ts3a227e";
88 reg = <0x3b>;
89 interrupt-parent = <&gpio1>;
90 interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
91 };
92 };
93
94 ...
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