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Documentation / devicetree / bindings / spi / omap-spi.txt




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Based on kernel version 3.15.4. Page generated on 2014-07-07 09:01 EST.

1	OMAP2+ McSPI device
2	
3	Required properties:
4	- compatible :
5	  - "ti,omap2-mcspi" for OMAP2 & OMAP3.
6	  - "ti,omap4-mcspi" for OMAP4+.
7	- ti,spi-num-cs : Number of chipselect supported  by the instance.
8	- ti,hwmods: Name of the hwmod associated to the McSPI
9	- ti,pindir-d0-out-d1-in: Select the D0 pin as output and D1 as
10				  input. The default is D0 as input and
11				  D1 as output.
12	
13	Optional properties:
14	- dmas: List of DMA specifiers with the controller specific format
15		as described in the generic DMA client binding. A tx and rx
16		specifier is required for each chip select.
17	- dma-names: List of DMA request names. These strings correspond
18		1:1 with the DMA specifiers listed in dmas. The string naming
19		is to be "rxN" and "txN" for RX and TX requests,
20		respectively, where N equals the chip select number.
21	
22	Examples:
23	
24	[hwmod populated DMA resources]
25	
26	mcspi1: mcspi@1 {
27	    #address-cells = <1>;
28	    #size-cells = <0>;
29	    compatible = "ti,omap4-mcspi";
30	    ti,hwmods = "mcspi1";
31	    ti,spi-num-cs = <4>;
32	};
33	
34	[generic DMA request binding]
35	
36	mcspi1: mcspi@1 {
37	    #address-cells = <1>;
38	    #size-cells = <0>;
39	    compatible = "ti,omap4-mcspi";
40	    ti,hwmods = "mcspi1";
41	    ti,spi-num-cs = <2>;
42	    dmas = <&edma 42
43		    &edma 43
44		    &edma 44
45		    &edma 45>;
46	    dma-names = "tx0", "rx0", "tx1", "rx1";
47	};
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