leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ASoC: fsl-sai: Add device tree bindings for Freescale SAI.

Browse Source 
This adds the Document for Freescale SAI driver under
Documentation/devicetree/bindings/sound/.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Xiubo Li 2013-12-17 11:24:41 +08:00 committed by Mark Brown
parent 4355082149
commit b6344859b9
1 changed files with 40 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
Documentation/devicetree/bindings/sound/fsl-sai.txt Normal file
View File

@ -0,0 +1,40 @@
Freescale Synchronous Audio Interface (SAI).
The SAI is based on I2S module that used communicating with audio codecs,
which provides a synchronous audio interface that supports fullduplex
serial interfaces with frame synchronization such as I2S, AC97, TDM, and
codec/DSP interfaces.
Required properties:
- compatible: Compatible list, contains "fsl,vf610-sai".
- reg: Offset and length of the register set for the device.
- clocks: Must contain an entry for each entry in clock-names.
- clock-names : Must include the "sai" entry.
- 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".
- pinctrl-names: Must contain a "default" entry.
- pinctrl-NNN: One property must exist for each entry in pinctrl-names.
See ../pinctrl/pinctrl-bindings.txt for details of the property values.
- big-endian-regs: If this property is absent, the little endian mode will
be in use as default, or the big endian mode will be in use for all the
device registers.
- big-endian-data: If this property is absent, the little endian mode will
be in use as default, or the big endian mode will be in use for all the
fifo data.
Example:
sai2: sai@40031000 {
compatible = "fsl,vf610-sai";
reg = <0x40031000 0x1000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai2_1>;
clocks = <&clks VF610_CLK_SAI2>;
clock-names = "sai";
dma-names = "tx", "rx";
dmas = <&edma0 0 VF610_EDMA_MUXID0_SAI2_TX>,
<&edma0 0 VF610_EDMA_MUXID0_SAI2_RX>;
big-endian-regs;
big-endian-data;
};