Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a2388a49 authored by Nicolin Chen's avatar Nicolin Chen Committed by Mark Brown
Browse files

ASoC: fsl: Add S/PDIF CPU DAI driver 



This patch implements a device-tree-only CPU DAI driver for Freescale
S/PDIF controller that supports stereo playback and record feature.

Signed-off-by: default avatarNicolin Chen <b42378@freescale.com>
Acked-by: default avatarStephen Warren <swarren@nvidia.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 0783e648

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

0 → 100644
+54 −0
Original line number Diff line number Diff line 
Freescale Sony/Philips Digital Interface Format (S/PDIF) Controller



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

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

a fibre cable.



Required properties:



  - compatible : Compatible list, must contain "fsl,imx35-spdif".



  - 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:

	"core"		The core clock of spdif controller

	"rxtx<0-7>"	Clock source list for tx and rx clock.

			This clock list should be identical to

			the source list connecting to the spdif

			clock mux in "SPDIF Transceiver Clock

			Diagram" of SoC reference manual. It

			can also be referred to TxClk_Source

			bit of register SPDIF_STC.



Example:



spdif: spdif@02004000 {

	compatible = "fsl,imx35-spdif";

	reg = <0x02004000 0x4000>;

	interrupts = <0 52 0x04>;

	dmas = <&sdma 14 18 0>,

	       <&sdma 15 18 0>;

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



	clocks = <&clks 197>, <&clks 3>,

	       <&clks 197>, <&clks 107>,

	       <&clks 0>, <&clks 118>,

	       <&clks 62>, <&clks 139>,

	       <&clks 0>;

	clock-names = "core", "rxtx0",

		"rxtx1", "rxtx2",

		"rxtx3", "rxtx4",

		"rxtx5", "rxtx6",

		"rxtx7";



	status = "okay";

};

sound/soc/fsl/Kconfig

+3 −0
Original line number Diff line number Diff line 
config SND_SOC_FSL_SSI

	tristate



config SND_SOC_FSL_SPDIF

	tristate



config SND_SOC_FSL_UTILS

	tristate

sound/soc/fsl/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -12,9 +12,11 @@ obj-$(CONFIG_SND_SOC_P1022_RDK) += snd-soc-p1022-rdk.o 


# Freescale PowerPC SSI/DMA Platform Support

snd-soc-fsl-ssi-objs := fsl_ssi.o

snd-soc-fsl-spdif-objs := fsl_spdif.o

snd-soc-fsl-utils-objs := fsl_utils.o

snd-soc-fsl-dma-objs := fsl_dma.o

obj-$(CONFIG_SND_SOC_FSL_SSI) += snd-soc-fsl-ssi.o

obj-$(CONFIG_SND_SOC_FSL_SPDIF) += snd-soc-fsl-spdif.o

obj-$(CONFIG_SND_SOC_FSL_UTILS) += snd-soc-fsl-utils.o

obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o