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Diffstat (limited to 'Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt')
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diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt new file mode 100644 index 000000000000..374e145c2ef1 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt | |||
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1 | Texas Instruments McASP controller | ||
2 | |||
3 | Required properties: | ||
4 | - compatible : | ||
5 | "ti,dm646x-mcasp-audio" : for DM646x platforms | ||
6 | "ti,da830-mcasp-audio" : for both DA830 & DA850 platforms | ||
7 | "ti,omap2-mcasp-audio" : for OMAP2 platforms (TI81xx, AM33xx) | ||
8 | |||
9 | - reg : Should contain McASP registers offset and length | ||
10 | - interrupts : Interrupt number for McASP | ||
11 | - op-mode : I2S/DIT ops mode. | ||
12 | - tdm-slots : Slots for TDM operation. | ||
13 | - num-serializer : Serializers used by McASP. | ||
14 | - serial-dir : A list of serializer pin mode. The list number should be equal | ||
15 | to "num-serializer" parameter. Each entry is a number indication | ||
16 | serializer pin direction. (0 - INACTIVE, 1 - TX, 2 - RX) | ||
17 | |||
18 | |||
19 | Optional properties: | ||
20 | |||
21 | - ti,hwmods : Must be "mcasp<n>", n is controller instance starting 0 | ||
22 | - tx-num-evt : FIFO levels. | ||
23 | - rx-num-evt : FIFO levels. | ||
24 | - sram-size-playback : size of sram to be allocated during playback | ||
25 | - sram-size-capture : size of sram to be allocated during capture | ||
26 | |||
27 | Example: | ||
28 | |||
29 | mcasp0: mcasp0@1d00000 { | ||
30 | compatible = "ti,da830-mcasp-audio"; | ||
31 | #address-cells = <1>; | ||
32 | #size-cells = <0>; | ||
33 | reg = <0x100000 0x3000>; | ||
34 | interrupts = <82 83>; | ||
35 | op-mode = <0>; /* MCASP_IIS_MODE */ | ||
36 | tdm-slots = <2>; | ||
37 | num-serializer = <16>; | ||
38 | serial-dir = < | ||
39 | 0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */ | ||
40 | 0 0 0 0 | ||
41 | 0 0 0 1 | ||
42 | 2 0 0 0 >; | ||
43 | tx-num-evt = <1>; | ||
44 | rx-num-evt = <1>; | ||
45 | }; | ||