1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/sound/cirrus,cs35l45.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Cirrus Logic CS35L45 Speaker Amplifier
8
9 maintainers:
10 - Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>
11 - Richard Fitzgerald <rf@opensource.cirrus.com>
12
13 description: |
14 CS35L45 is a Boosted Mono Class D Amplifier with DSP
15 Speaker Protection and Adaptive Battery Management.
16
17 allOf:
18 - $ref: dai-common.yaml#
19
20 properties:
21 compatible:
22 enum:
23 - cirrus,cs35l45
24
25 reg:
26 maxItems: 1
27
28 interrupts:
29 maxItems: 1
30
31 '#sound-dai-cells':
32 const: 1
33
34 reset-gpios:
35 maxItems: 1
36
37 vdd-a-supply:
38 description: voltage regulator phandle for the VDD_A supply
39
40 vdd-batt-supply:
41 description: voltage regulator phandle for the VDD_BATT supply
42
43 spi-max-frequency:
44 maximum: 5000000
45
46 cirrus,asp-sdout-hiz-ctrl:
47 description:
48 Audio serial port SDOUT Hi-Z control. Sets the Hi-Z
49 configuration for SDOUT pin of amplifier. Logical OR of
50 CS35L45_ASP_TX_HIZ_xxx values.
51 $ref: /schemas/types.yaml#/definitions/uint32
52 minimum: 0
53 maximum: 3
54 default: 2
55
56 patternProperties:
57 "^cirrus,gpio-ctrl[1-3]$":
58 description:
59 GPIO pins configuration.
60 type: object
61 additionalProperties: false
62 properties:
63 gpio-dir:
64 description:
65 GPIO pin direction. Valid only when 'gpio-ctrl' is 1
66 0 = Output
67 1 = Input
68 $ref: /schemas/types.yaml#/definitions/uint32
69 minimum: 0
70 maximum: 1
71 default: 1
72 gpio-lvl:
73 description:
74 GPIO level. Valid only when 'gpio-ctrl' is 1 and 'gpio-dir' is 0
75 0 = Low
76 1 = High
77 $ref: /schemas/types.yaml#/definitions/uint32
78 minimum: 0
79 maximum: 1
80 default: 0
81 gpio-op-cfg:
82 description:
83 GPIO level. Valid only when 'gpio-ctrl' is 1 and 'gpio-dir' is 0
84 0 = CMOS
85 1 = Open Drain
86 $ref: /schemas/types.yaml#/definitions/uint32
87 minimum: 0
88 maximum: 1
89 default: 0
90 gpio-pol:
91 description:
92 GPIO output polarity select. Valid only when 'gpio-ctrl' is 1
93 and 'gpio-dir' is 0
94 0 = Non-inverted, Active High
95 1 = Inverted, Active Low
96 $ref: /schemas/types.yaml#/definitions/uint32
97 minimum: 0
98 maximum: 1
99 default: 0
100 gpio-ctrl:
101 description:
102 Defines the function of the GPIO pin.
103 GPIO1
104 0 = High impedance input
105 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
106 2 = Pin acts as MDSYNC, direction controlled by MDSYNC
107 3-7 = Reserved
108 GPIO2
109 0 = High impedance input
110 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
111 2 = Pin acts as open drain INT
112 3 = Reserved
113 4 = Pin acts as push-pull output INT. Active low.
114 5 = Pin acts as push-pull output INT. Active high.
115 6,7 = Reserved
116 GPIO3
117 0 = High impedance input
118 1 = Pin acts as a GPIO, direction controlled by 'gpio-dir'
119 2-7 = Reserved
120 $ref: /schemas/types.yaml#/definitions/uint32
121 minimum: 0
122 maximum: 7
123 default: 0
124 required:
125 - compatible
126 - reg
127 - "#sound-dai-cells"
128
129 unevaluatedProperties: false
130
131 examples:
132 - |
133 #include <dt-bindings/sound/cs35l45.h>
134 spi {
135 #address-cells = <1>;
136 #size-cells = <0>;
137
138 cs35l45: cs35l45@2 {
139 #sound-dai-cells = <1>;
140 compatible = "cirrus,cs35l45";
141 reg = <2>;
142 spi-max-frequency = <5000000>;
143 vdd-a-supply = <&dummy_vreg>;
144 vdd-batt-supply = <&dummy_vreg>;
145 reset-gpios = <&gpio 110 0>;
146 cirrus,asp-sdout-hiz-ctrl = <(CS35L45_ASP_TX_HIZ_UNUSED |
147 CS35L45_ASP_TX_HIZ_DISABLED)>;
148 cirrus,gpio-ctrl1 {
149 gpio-ctrl = <0x2>;
150 };
151 cirrus,gpio-ctrl2 {
152 gpio-ctrl = <0x2>;
153 };
154 cirrus,gpio-ctrl3 {
155 gpio-ctrl = <0x1>;
156 gpio-dir = <0x1>;
157 };
158 };
159 };
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