[alsa-devel] [PATCH v4 10/10] ASoC: fsl: Update fsl-ssi binding doc
mpa at pengutronix.de
Thu Apr 18 14:33:44 CEST 2013
Update the fsl-ssi bindings. DMA is no required property anymore and
uses the generic DMA bindings. imx-fiq is a new alternative to DMA
Signed-off-by: Markus Pargmann <mpa at pengutronix.de>
Changes in v4:
- Add a comment about hardware bugs for imx-pcm-fiq
Changes in v3:
- In previous versions, I removed fsl,playback-dma and capture-dma. But they
are still in use by fsl_dma.c, so I added them again.
Documentation/devicetree/bindings/sound/fsl,ssi.txt | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/fsl,ssi.txt b/Documentation/devicetree/bindings/sound/fsl,ssi.txt
index 5ff76c9..0375ee0 100644
@@ -43,10 +43,20 @@ Required properties:
together. This would still allow different sample sizes,
but not different sample rates.
+Note that either dmas, dma-names or fsl,imx-fiq are required.
- 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.
+- dmas: Generic dma devicetree binding as described in
+- dma-names: Two dmas have to be defined, "tx" and "rx", if fsl,imx-fiq
+ is not defined.
+- fsl,imx-fiq: Bool property. Use imx-pcm-fiq instead of imx-pcm-dma.
+ Only necessary for some boards with incompatible
+ codec. imx-pcm-fiq will manually filter some data from
+ the codec. It is a workaround for a hardware bug.
Child 'codec' node required properties:
- compatible: Compatible list, contains the name of the codec
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