diff options
| author | Markus Pargmann <mpa@pengutronix.de> | 2013-07-27 13:31:53 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-08-06 18:57:24 +0200 |
| commit | de623ece5be03e4447dbe08eaca30c92202a34a2 (patch) | |
| tree | c9c97c8748bd17eeaeb46d2e710f3181456ef34c /Documentation | |
| parent | ASoC: imx-audmux: Read default configuration from devicetree (diff) | |
| download | linux-de623ece5be03e4447dbe08eaca30c92202a34a2.tar.xz linux-de623ece5be03e4447dbe08eaca30c92202a34a2.zip | |
ASoC: fsl-ssi: Add support for imx-pcm-fiq
Add support for non-dma pcm for imx platforms with imx-pcm-fiq support.
Instead of imx-pcm-audio, in this case imx-pcm-fiq-audio device is added
and the SIER flags are set differently.
We need imx-pcm-fiq for some boards that use an incompatible codec.
imx-pcm-fiq handles those codecs differently and allows to operate with
them. DMA is not possible because some data sent by the codecs, e.g.
wm9712, is not in the datastream. Also some data is mixed up in the
fifos, so that we need to sort them out manually.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/sound/fsl,ssi.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/fsl,ssi.txt b/Documentation/devicetree/bindings/sound/fsl,ssi.txt index 5ff76c9c57d2..e45cbce9cbf3 100644 --- a/Documentation/devicetree/bindings/sound/fsl,ssi.txt +++ b/Documentation/devicetree/bindings/sound/fsl,ssi.txt @@ -47,6 +47,10 @@ Optional properties: - codec-handle: Phandle to a 'codec' node that defines an audio codec connected to this SSI. This node is typically a child of an I2C or other control node. +- fsl,fiq-stream-filter: Bool property. Disabled DMA and use FIQ instead to + filter the codec stream. This is necessary for some boards + where an incompatible codec is connected to this SSI, e.g. + on pca100 and pcm043. Child 'codec' node required properties: - compatible: Compatible list, contains the name of the codec |