summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/sound/fsl,sai.yaml
blob: 7e56337d8edc1604f16f0e45f1c4e93c7503af89 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/fsl,sai.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale Synchronous Audio Interface (SAI).

maintainers:
  - Shengjiu Wang <shengjiu.wang@nxp.com>

description: |
  The SAI is based on I2S module that used communicating with audio codecs,
  which provides a synchronous audio interface that supports fullduplex
  serial interfaces with frame synchronization such as I2S, AC97, TDM, and
  codec/DSP interfaces.

properties:
  compatible:
    oneOf:
      - items:
          - enum:
              - fsl,imx6ul-sai
              - fsl,imx7d-sai
          - const: fsl,imx6sx-sai

      - items:
          - enum:
              - fsl,imx8mm-sai
              - fsl,imx8mn-sai
              - fsl,imx8mp-sai
          - const: fsl,imx8mq-sai

      - items:
          - enum:
              - fsl,imx6sx-sai
              - fsl,imx7ulp-sai
              - fsl,imx8mq-sai
              - fsl,imx8qm-sai
              - fsl,imx8ulp-sai
              - fsl,imx93-sai
              - fsl,vf610-sai

  reg:
    maxItems: 1

  clocks:
    items:
      - description: The ipg clock for register access
      - description: master clock source 0 (obsoleted)
      - description: master clock source 1
      - description: master clock source 2
      - description: master clock source 3
      - description: PLL clock source for 8kHz series
      - description: PLL clock source for 11kHz series
    minItems: 4

  clock-names:
    oneOf:
      - items:
          - const: bus
          - const: mclk0
          - const: mclk1
          - const: mclk2
          - const: mclk3
          - const: pll8k
          - const: pll11k
        minItems: 5
      - items:
          - const: bus
          - const: mclk1
          - const: mclk2
          - const: mclk3
          - const: pll8k
          - const: pll11k
        minItems: 4

  dmas:
    maxItems: 2

  dma-names:
    maxItems: 2

  interrupts:
    items:
      - description: receive and transmit interrupt

  big-endian:
    description: |
      required if all the SAI registers are big-endian rather than little-endian.
    type: boolean

  fsl,dataline:
    $ref: /schemas/types.yaml#/definitions/uint32-matrix
    description: |
      Configure the dataline. It has 3 value for each configuration
    maxItems: 16
    items:
      items:
        - description: format Default(0), I2S(1) or PDM(2)
          enum: [0, 1, 2]
        - description: dataline mask for 'rx'
        - description: dataline mask for 'tx'

  fsl,sai-mclk-direction-output:
    description: SAI will output the SAI MCLK clock.
    type: boolean

  fsl,sai-synchronous-rx:
    description: |
      SAI will work in the synchronous mode (sync Tx with Rx) which means
      both the transmitter and the receiver will send and receive data by
      following receiver's bit clocks and frame sync clocks.
    type: boolean

  fsl,sai-asynchronous:
    description: |
      SAI will work in the asynchronous mode, which means both transmitter
      and receiver will send and receive data by following their own bit clocks
      and frame sync clocks separately.
      If both fsl,sai-asynchronous and fsl,sai-synchronous-rx are absent, the
      default synchronous mode (sync Rx with Tx) will be used, which means both
      transmitter and receiver will send and receive data by following clocks
      of transmitter.
    type: boolean

  fsl,shared-interrupt:
    description: Interrupt is shared with other modules.
    type: boolean

  lsb-first:
    description: |
      Configures whether the LSB or the MSB is transmitted
      first for the fifo data. If this property is absent,
      the MSB is transmitted first as default, or the LSB
      is transmitted first.
    type: boolean

  "#sound-dai-cells":
    const: 0
    description: optional, some dts node didn't add it.

allOf:
  - $ref: dai-common.yaml#
  - if:
      properties:
        compatible:
          contains:
            const: fsl,vf610-sai
    then:
      properties:
        dmas:
          items:
            - description: DMA controller phandle and request line for TX
            - description: DMA controller phandle and request line for RX
        dma-names:
          items:
            - const: tx
            - const: rx
    else:
      properties:
        dmas:
          items:
            - description: DMA controller phandle and request line for RX
            - description: DMA controller phandle and request line for TX
        dma-names:
          items:
            - const: rx
            - const: tx
  - if:
      required:
        - fsl,sai-asynchronous
    then:
      properties:
        fsl,sai-synchronous-rx: false

required:
  - compatible
  - reg
  - clocks
  - clock-names
  - dmas
  - dma-names
  - interrupts

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/vf610-clock.h>
    sai2: sai@40031000 {
        compatible = "fsl,vf610-sai";
        reg = <0x40031000 0x1000>;
        interrupts = <86 IRQ_TYPE_LEVEL_HIGH>;
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_sai2_1>;
        clocks = <&clks VF610_CLK_PLATFORM_BUS>,
                 <&clks VF610_CLK_SAI2>,
                 <&clks 0>, <&clks 0>;
        clock-names = "bus", "mclk1", "mclk2", "mclk3";
        dma-names = "tx", "rx";
        dmas = <&edma0 0 21>,
               <&edma0 0 20>;
        big-endian;
        lsb-first;
    };

  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/imx8mm-clock.h>
    sai1: sai@30010000 {
        compatible = "fsl,imx8mm-sai", "fsl,imx8mq-sai";
        reg = <0x30010000 0x10000>;
        interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&clk IMX8MM_CLK_SAI1_IPG>,
                 <&clk IMX8MM_CLK_DUMMY>,
                 <&clk IMX8MM_CLK_SAI1_ROOT>,
                 <&clk IMX8MM_CLK_DUMMY>, <&clk IMX8MM_CLK_DUMMY>;
        clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3";
        dmas = <&sdma2 0 2 0>, <&sdma2 1 2 0>;
        dma-names = "rx", "tx";
        fsl,dataline = <1 0xff 0xff 2 0xff 0x11>;
        #sound-dai-cells = <0>;
    };