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| author | Rongjun Ying <rongjun.ying@csr.com> | 2014-07-02 06:45:42 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-07-03 20:11:41 +0400 |
| commit | 374a6679bef2e79fc2a27eea79b0400295e39df0 (patch) | |
| tree | f6a5dac8c4c0d85d4b0ca897d040d4a9243b9b7d /Documentation/devicetree | |
| parent | 2bd8d1d5cf8905c7652fa90a8ec952ba52f820ac (diff) | |
| download | linux-374a6679bef2e79fc2a27eea79b0400295e39df0.tar.xz | |
ASoC: sirf: Add device tree binding for the USP audio device
Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/sirf-usp.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/sirf-usp.txt b/Documentation/devicetree/bindings/sound/sirf-usp.txt new file mode 100644 index 000000000000..02f85b32d359 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/sirf-usp.txt @@ -0,0 +1,27 @@ +* 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>; +}; + |