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Documentation / devicetree / bindings / sound / davinci-mcasp-audio.txt




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Based on kernel version 3.9. Page generated on 2013-05-02 23:01 EST.

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	};
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