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ASoC: sirf: Add device tree binding for the USP audio device

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Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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Rongjun Ying 2014-07-02 10:45:42 +08:00 committed by Mark Brown
parent 2bd8d1d5cf
commit 374a6679be
1 changed files with 27 additions and 0 deletions
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Documentation/devicetree/bindings/sound/sirf-usp.txt Normal file
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* SiRF SoC USP module
Required properties:
- compatible: "sirf,prima2-usp-pcm"
- reg: Base address and size entries:
- dmas: List of DMA controller phandle and DMA request line ordered pairs.
- dma-names: Identifier string for each DMA request line in the dmas property.
These strings correspond 1:1 with the ordered pairs in dmas.
One of the DMA channels will be responsible for transmission (should be
named "tx") and one for reception (should be named "rx").
- clocks: USP controller clock source
- pinctrl-names: Must contain a "default" entry.
- pinctrl-NNN: One property must exist for each entry in pinctrl-names.
Example:
usp0: usp@b0080000 {
compatible = "sirf,prima2-usp-pcm";
reg = <0xb0080000 0x10000>;
clocks = <&clks 28>;
dmas = <&dmac1 1>, <&dmac1 2>;
dma-names = "rx", "tx";
pinctrl-names = "default";
pinctrl-0 = <&usp0_only_utfs_pins_a>;
};