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Commit 8020e1bb authored by Marcus Cooper's avatar Marcus Cooper Committed by Mark Brown
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ASoC: sunxi: add sun4i SPDIF transceiver 



Add devicetree bindings for the SPDIF transceiver found on
found on Allwinners A10 and A20 SoCs.

Signed-off-by: default avatarMarcus Cooper <codekipper@gmail.com>
Acked-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 92e963f5

Documentation/devicetree/bindings/sound/sunxi,sun4i-spdif.txt

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Allwinner Sony/Philips Digital Interface Format (S/PDIF) Controller



The Allwinner S/PDIF audio block is a transceiver that allows the

processor to receive and transmit digital audio via an coaxial cable or

a fibre cable.

For now only playback is supported.



Required properties:



  - compatible		: should be one of the following:

    - "allwinner,sun4i-a10-spdif": for the Allwinner A10 SoC



  - reg			: Offset and length of the register set for the device.



  - interrupts		: Contains the spdif interrupt.



  - dmas		: Generic dma devicetree binding as described in

			  Documentation/devicetree/bindings/dma/dma.txt.



  - dma-names		: Two dmas have to be defined, "tx" and "rx".



  - clocks		: Contains an entry for each entry in clock-names.



  - clock-names		: Includes the following entries:

	"apb"		  clock for the spdif bus.

	"spdif"		  clock for spdif controller.



Example:



spdif: spdif@01c21000 {

	compatible = "allwinner,sun4i-a10-spdif";

	reg = <0x01c21000 0x40>;

	interrupts = <13>;

	clocks = <&apb0_gates 1>, <&spdif_clk>;

	clock-names = "apb", "spdif";

	dmas = <&dma 0 2>, <&dma 0 2>;

	dma-names = "rx", "tx";

	status = "okay";

};