ASoC: dwc: Add irq parameter to DOCUMENTATION

A parameter description for the interruptions of the
I2S controller was added.

Signed-off-by: Jose Abreu <[email protected]>
Acked-by: Rob Herring <[email protected]>
Cc: Carlos Palminha <[email protected]>
Cc: Mark Brown <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Alexey Brodkin <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: joabreu

Documentation/devicetree/bindings/sound/designware-i2s.txt

@@ -12,6 +12,10 @@ Required properties:
    one for receive.
  - dma-names : "tx" for the transmit channel, "rx" for the receive channel.
 
+Optional properties:
+ - interrupts: The interrupt line number for the I2S controller. Add this
+   parameter if the I2S controller that you are using does not support DMA.
+
 For more details on the 'dma', 'dma-names', 'clock' and 'clock-names'
 properties please check:
 	* resource-names.txt