xref: /freebsd/sys/contrib/device-tree/Bindings/sound/sgtl5000.yaml (revision b97ee269eae3cbaf35c18f51a459aea581c2a7dc) 
1# SPDX-License-Identifier: GPL-2.0-only
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/sgtl5000.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale SGTL5000 Stereo Codec
8
9maintainers:
10  - Fabio Estevam <festevam@gmail.com>
11
12properties:
13  compatible:
14    const: fsl,sgtl5000
15
16  reg:
17    maxItems: 1
18
19  "#sound-dai-cells":
20    const: 0
21
22  assigned-clock-parents: true
23  assigned-clock-rates: true
24  assigned-clocks: true
25
26  clocks:
27    items:
28      - description: the clock provider of SYS_MCLK
29
30  VDDA-supply:
31    description: the regulator provider of VDDA
32
33  VDDIO-supply:
34    description: the regulator provider of VDDIO
35
36  VDDD-supply:
37    description: the regulator provider of VDDD
38
39  micbias-resistor-k-ohms:
40    description: The bias resistor to be used in kOhms. The resistor can take
41      values of 2k, 4k or 8k. If set to 0 it will be off. If this node is not
42      mentioned or if the value is unknown, then micbias resistor is set to
43      4k.
44    enum: [ 0, 2, 4, 8 ]
45
46  micbias-voltage-m-volts:
47    description: The bias voltage to be used in mVolts. The voltage can take
48      values from 1.25V to 3V by 250mV steps. If this node is not mentioned
49      or the value is unknown, then the value is set to 1.25V.
50    $ref: "/schemas/types.yaml#/definitions/uint32"
51    enum: [ 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000 ]
52
53  lrclk-strength:
54    description: |
55      The LRCLK pad strength. Possible values are: 0, 1, 2 and 3 as per the
56      table below:
57
58        VDDIO		1.8V		2.5V		3.3V
59        0 =		Disable
60        1 =		1.66 mA		2.87 mA		4.02  mA
61        2 =		3.33 mA		5.74 mA		8.03  mA
62        3 =		4.99 mA		8.61 mA		12.05 mA
63    $ref: "/schemas/types.yaml#/definitions/uint32"
64    enum: [ 0, 1, 2, 3 ]
65
66  sclk-strength:
67    description: |
68      The SCLK pad strength. Possible values are: 0, 1, 2 and 3 as per the
69      table below:
70
71        VDDIO		1.8V		2.5V		3.3V
72        0 =		Disable
73        1 =		1.66 mA		2.87 mA		4.02  mA
74        2 =		3.33 mA		5.74 mA		8.03  mA
75        3 =		4.99 mA		8.61 mA		12.05 mA
76    $ref: "/schemas/types.yaml#/definitions/uint32"
77    enum: [ 0, 1, 2, 3 ]
78
79  port:
80    $ref: audio-graph-port.yaml#
81    unevaluatedProperties: false
82
83required:
84  - compatible
85  - reg
86  - "#sound-dai-cells"
87  - clocks
88  - VDDA-supply
89  - VDDIO-supply
90
91additionalProperties: false
92
93examples:
94  - |
95    i2c {
96        #address-cells = <1>;
97        #size-cells = <0>;
98
99        codec@a {
100            compatible = "fsl,sgtl5000";
101            reg = <0x0a>;
102            #sound-dai-cells = <0>;
103            clocks = <&clks 150>;
104            micbias-resistor-k-ohms = <2>;
105            micbias-voltage-m-volts = <2250>;
106            VDDA-supply = <&reg_3p3v>;
107            VDDIO-supply = <&reg_3p3v>;
108        };
109    };
110...
111