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Documentation / devicetree / bindings / sound / fsl,spdif.txt




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Based on kernel version 4.1. Page generated on 2015-06-28 12:11 EST.

1	Freescale Sony/Philips Digital Interface Format (S/PDIF) Controller
2	
3	The Freescale S/PDIF audio block is a stereo transceiver that allows the
4	processor to receive and transmit digital audio via an coaxial cable or
5	a fibre cable.
6	
7	Required properties:
8	
9	  - compatible		: Compatible list, must contain "fsl,imx35-spdif".
10	
11	  - reg			: Offset and length of the register set for the device.
12	
13	  - interrupts		: Contains the spdif interrupt.
14	
15	  - dmas		: Generic dma devicetree binding as described in
16				  Documentation/devicetree/bindings/dma/dma.txt.
17	
18	  - dma-names		: Two dmas have to be defined, "tx" and "rx".
19	
20	  - clocks		: Contains an entry for each entry in clock-names.
21	
22	  - clock-names		: Includes the following entries:
23		"core"		  The core clock of spdif controller.
24		"rxtx<0-7>"	  Clock source list for tx and rx clock.
25				  This clock list should be identical to the source
26				  list connecting to the spdif clock mux in "SPDIF
27				  Transceiver Clock Diagram" of SoC reference manual.
28				  It can also be referred to TxClk_Source bit of
29				  register SPDIF_STC.
30	
31	   - big-endian		: If this property is absent, the native endian mode
32				  will be in use as default, or the big endian mode
33				  will be in use for all the device registers.
34	
35	Example:
36	
37	spdif: spdif@02004000 {
38		compatible = "fsl,imx35-spdif";
39		reg = <0x02004000 0x4000>;
40		interrupts = <0 52 0x04>;
41		dmas = <&sdma 14 18 0>,
42		       <&sdma 15 18 0>;
43		dma-names = "rx", "tx";
44	
45		clocks = <&clks 197>, <&clks 3>,
46		       <&clks 197>, <&clks 107>,
47		       <&clks 0>, <&clks 118>,
48		       <&clks 62>, <&clks 139>,
49		       <&clks 0>;
50		clock-names = "core", "rxtx0",
51			"rxtx1", "rxtx2",
52			"rxtx3", "rxtx4",
53			"rxtx5", "rxtx6",
54			"rxtx7";
55	
56		big-endian;
57		status = "okay";
58	};
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