Commit | Line | Data |
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415f1cb2 KM |
1 | Renesas Sampling Rate Convert Sound Card: |
2 | ||
3 | Renesas Sampling Rate Convert Sound Card specifies audio DAI connections of SoC <-> codec. | |
4 | ||
5 | Required properties: | |
6 | ||
62404442 GU |
7 | - compatible : "renesas,rsrc-card{,<board>}" |
8 | Examples with boards are: | |
b7419dd7 | 9 | - "renesas,rsrc-card" |
415f1cb2 KM |
10 | - "renesas,rsrc-card,lager" |
11 | - "renesas,rsrc-card,koelsch" | |
12 | Optional properties: | |
13 | ||
14 | - card_name : User specified audio sound card name, one string | |
15 | property. | |
16 | - cpu : CPU sub-node | |
17 | - codec : CODEC sub-node | |
18 | ||
19 | Optional subnode properties: | |
20 | ||
21 | - format : CPU/CODEC common audio format. | |
22 | "i2s", "right_j", "left_j" , "dsp_a" | |
23 | "dsp_b", "ac97", "pdm", "msb", "lsb" | |
24 | - frame-master : Indicates dai-link frame master. | |
25 | phandle to a cpu or codec subnode. | |
26 | - bitclock-master : Indicates dai-link bit clock master. | |
27 | phandle to a cpu or codec subnode. | |
28 | - bitclock-inversion : bool property. Add this if the | |
29 | dai-link uses bit clock inversion. | |
30 | - frame-inversion : bool property. Add this if the | |
31 | dai-link uses frame clock inversion. | |
af7e2be9 | 32 | - convert-rate : platform specified sampling rate convert |
74e26809 | 33 | - convert-channels : platform specified converted channel size (2 - 8 ch) |
b7419dd7 KM |
34 | - audio-prefix : see audio-routing |
35 | - audio-routing : A list of the connections between audio components. | |
36 | Each entry is a pair of strings, the first being the connection's sink, | |
37 | the second being the connection's source. Valid names for sources. | |
38 | use audio-prefix if some components is using same sink/sources naming. | |
39 | it can be used if compatible was "renesas,rsrc-card"; | |
415f1cb2 KM |
40 | |
41 | Required CPU/CODEC subnodes properties: | |
42 | ||
43 | - sound-dai : phandle and port of CPU/CODEC | |
44 | ||
45 | Optional CPU/CODEC subnodes properties: | |
46 | ||
47 | - clocks / system-clock-frequency : specify subnode's clock if needed. | |
48 | it can be specified via "clocks" if system has | |
49 | clock node (= common clock), or "system-clock-frequency" | |
50 | (if system doens't support common clock) | |
51 | If a clock is specified, it is | |
52 | enabled with clk_prepare_enable() | |
53 | in dai startup() and disabled with | |
54 | clk_disable_unprepare() in dai | |
55 | shutdown(). | |
56 | ||
57 | Example | |
58 | ||
59 | sound { | |
60 | compatible = "renesas,rsrc-card,lager"; | |
61 | ||
62 | card-name = "rsnd-ak4643"; | |
63 | format = "left_j"; | |
64 | bitclock-master = <&sndcodec>; | |
65 | frame-master = <&sndcodec>; | |
66 | ||
67 | sndcpu: cpu { | |
68 | sound-dai = <&rcar_sound>; | |
69 | }; | |
70 | ||
71 | sndcodec: codec { | |
72 | sound-dai = <&ak4643>; | |
73 | system-clock-frequency = <11289600>; | |
74 | }; | |
75 | }; |