This patch updates documentation for the Designware I2S
driver.
Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>
---
This patch was only introduced in v4.
Documentation/devicetree/bindings/sound/designware-i2s.txt | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/designware-i2s.txt b/Documentation/devicetree/bindings/sound/designware-i2s.txt
index 7bb5424..f3b5c17 100644
--- a/Documentation/devicetree/bindings/sound/designware-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/designware-i2s.txt
@@ -7,6 +7,10 @@ Required properties:
clocks. The controller expects one clock: the clock used as the sampling
rate reference clock sample.
- clock-names : "i2sclk" for the sample rate reference clock.
+
+ Optional properties:
+ - snps,use-dmaengine: If set the driver will use ALSA DMA engine. If set
+ it is required to use the properties 'dmas' and 'dma-names'.
- dmas: Pairs of phandle and specifier for the DMA channels that are used by
the core. The core expects one or two dma channels: one for transmit and
one for receive.
@@ -26,6 +30,7 @@ Example:
clocks = <&scpi_i2sclk 0>;
clock-names = "i2sclk";
#sound-dai-cells = <0>;
+ snps,use-dmaengine;
dmas = <&dma0 5>;
dma-names = "tx";
};
--
1.9.1
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