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Commit 0b9e49e6 authored by Matt Porter's avatar Matt Porter Committed by Mark Brown
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spi: omap2-mcspi: add generic DMA request support to the DT binding 



The binding definition is based on the generic DMA request binding

Signed-off-by: default avatarMatt Porter <mporter@ti.com>
Signed-off-by: default avatarJoel A Fernandes <joelagnel@ti.com>
Signed-off-by: default avatarSourav Poddar <sourav.poddar@ti.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 74f3aaad

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

+26 −1
Original line number Diff line number Diff line
@@ -10,7 +10,18 @@ Required properties: 
			  input. The default is D0 as input and

			  D1 as output.



Example:

Optional properties:

- dmas: List of DMA specifiers with the controller specific format

	as described in the generic DMA client binding. A tx and rx

	specifier is required for each chip select.

- dma-names: List of DMA request names. These strings correspond

	1:1 with the DMA specifiers listed in dmas. The string naming

	is to be "rxN" and "txN" for RX and TX requests,

	respectively, where N equals the chip select number.



Examples:



[hwmod populated DMA resources]



mcspi1: mcspi@1 {

    #address-cells = <1>;
@@ -20,3 +31,17 @@ mcspi1: mcspi@1 { 
    ti,spi-num-cs = <4>;

};



[generic DMA request binding]



mcspi1: mcspi@1 {

    #address-cells = <1>;

    #size-cells = <0>;

    compatible = "ti,omap4-mcspi";

    ti,hwmods = "mcspi1";

    ti,spi-num-cs = <2>;

    dmas = <&edma 42

	    &edma 43

	    &edma 44

	    &edma 45>;

    dma-names = "tx0", "rx0", "tx1", "rx1";

};