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1Qualcomm Audio Front End (Q6AFE) binding
2
3AFE is one of the APR audio service on Q6DSP
4Please refer to qcom,apr.txt for details of the common apr service bindings
5used by all apr services. Must contain the following properties.
6
7- compatible:
8 Usage: required
9 Value type: <stringlist>
10 Definition: must be "qcom,q6afe-v<MAJOR-NUMBER>.<MINOR-NUMBER>"
11 Or "qcom,q6afe" where the version number can be queried
12 from DSP.
13 example "qcom,q6afe"
14
15= AFE DAIs (Digial Audio Interface)
16"dais" subnode of the AFE node. It represents afe dais, each afe dai is a
17subnode of "dais" representing board specific dai setup.
18"dais" node should have following properties followed by dai children.
19
20- compatible:
21 Usage: required
22 Value type: <stringlist>
23 Definition: must be "qcom,q6afe-dais"
24
25- #sound-dai-cells
26 Usage: required
27 Value type: <u32>
28 Definition: Must be 1
29
30- #address-cells
31 Usage: required
32 Value type: <u32>
33 Definition: Must be 1
34
35- #size-cells
36 Usage: required
37 Value type: <u32>
38 Definition: Must be 0
39
40== AFE DAI is subnode of "dais" and represent a dai, it includes board specific
41configuration of each dai. Must contain the following properties.
42
43- reg
44 Usage: required
45 Value type: <u32>
46 Definition: Must be dai id
47
48- qcom,sd-lines
49 Usage: required for mi2s interface
50 Value type: <prop-encoded-array>
51 Definition: Must be list of serial data lines used by this dai.
52 should be one or more of the 0-3 sd lines.
53
54 - qcom,tdm-sync-mode:
55 Usage: required for tdm interface
56 Value type: <prop-encoded-array>
57 Definition: Synchronization mode.
58 0 - Short sync bit mode
59 1 - Long sync mode
60 2 - Short sync slot mode
61
62 - qcom,tdm-sync-src:
63 Usage: required for tdm interface
64 Value type: <prop-encoded-array>
65 Definition: Synchronization source.
66 0 - External source
67 1 - Internal source
68
69 - qcom,tdm-data-out:
70 Usage: required for tdm interface
71 Value type: <prop-encoded-array>
72 Definition: Data out signal to drive with other masters.
73 0 - Disable
74 1 - Enable
75
76 - qcom,tdm-invert-sync:
77 Usage: required for tdm interface
78 Value type: <prop-encoded-array>
79 Definition: Invert the sync.
80 0 - Normal
81 1 - Invert
82
83 - qcom,tdm-data-delay:
84 Usage: required for tdm interface
85 Value type: <prop-encoded-array>
86 Definition: Number of bit clock to delay data
87 with respect to sync edge.
88 0 - 0 bit clock cycle
89 1 - 1 bit clock cycle
90 2 - 2 bit clock cycle
91
92 - qcom,tdm-data-align:
93 Usage: required for tdm interface
94 Value type: <prop-encoded-array>
95 Definition: Indicate how data is packed
96 within the slot. For example, 32 slot width in case of
97 sample bit width is 24.
98 0 - MSB
99 1 - LSB
100
101= EXAMPLE
102
103q6afe@4 {
104 compatible = "qcom,q6afe";
105 reg = <APR_SVC_AFE>;
106
107 dais {
108 compatible = "qcom,q6afe-dais";
109 #sound-dai-cells = <1>;
110 #address-cells = <1>;
111 #size-cells = <0>;
112
113 hdmi@1 {
114 reg = <1>;
115 };
116
117 tdm@24 {
118 reg = <24>;
119 qcom,tdm-sync-mode = <1>:
120 qcom,tdm-sync-src = <1>;
121 qcom,tdm-data-out = <0>;
122 qcom,tdm-invert-sync = <1>;
123 qcom,tdm-data-delay = <1>;
124 qcom,tdm-data-align = <0>;
125
126 };
127
128 tdm@25 {
129 reg = <25>;
130 qcom,tdm-sync-mode = <1>:
131 qcom,tdm-sync-src = <1>;
132 qcom,tdm-data-out = <0>;
133 qcom,tdm-invert-sync = <1>;
134 qcom,tdm-data-delay <1>:
135 qcom,tdm-data-align = <0>;
136 };
137
138 prim-mi2s-rx@16 {
139 reg = <16>;
140 qcom,sd-lines = <0 2>;
141 };
142
143 prim-mi2s-tx@17 {
144 reg = <17>;
145 qcom,sd-lines = <1>;
146 };
147
148 sec-mi2s-rx@18 {
149 reg = <18>;
150 qcom,sd-lines = <0 3>;
151 };
152
153 sec-mi2s-tx@19 {
154 reg = <19>;
155 qcom,sd-lines = <1>;
156 };
157
158 tert-mi2s-rx@20 {
159 reg = <20>;
160 qcom,sd-lines = <1 3>;
161 };
162
163 tert-mi2s-tx@21 {
164 reg = <21>;
165 qcom,sd-lines = <0>;
166 };
167
168 quat-mi2s-rx@22 {
169 reg = <22>;
170 qcom,sd-lines = <0>;
171 };
172
173 quat-mi2s-tx@23 {
174 reg = <23>;
175 qcom,sd-lines = <1>;
176 };
177 };
178};