This patch updates documentation for the Designware I2S
driver.
Signed-off-by: Jose Abreu <joabreu at synopsys.com>
Acked-by: Rob Herring <robh at kernel.org>
Cc: Rob Herring <robh at kernel.org>
Cc: Carlos Palminha <palminha at synopsys.com>
Cc: Alexey Brodkin <abrodkin at synopsys.com>
Cc: devicetree at vger.kernel.org
Cc: linux-snps-arc at lists.infradead.org
Cc: alsa-devel at alsa-project.org
Cc: linux-kernel at vger.kernel.org
---
No changes v5 -> v6.
Changes v4 -> v5:
* interrupts is now required property
* Drop 'snps-use-dmaengine' property
This patch was only introduced in v4.
Documentation/devicetree/bindings/sound/designware-i2s.txt | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/sound/designware-i2s.txt b/Documentation/devicetree/bindings/sound/designware-i2s.txt
index 7bb5424..27a728f 100644
--- a/Documentation/devicetree/bindings/sound/designware-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/designware-i2s.txt
@@ -3,14 +3,18 @@ DesignWare I2S controller
Required properties:
- compatible : Must be "snps,designware-i2s"
- reg : Must contain the I2S core's registers location and length
+ - interrupts: <IRQ> where IRQ is the interrupt number.
- clocks : Pairs of phandle and specifier referencing the controller's
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:
- 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.
- - dma-names : "tx" for the transmit channel, "rx" for the receive channel.
+ one for receive. Set this parameter if the I2S DMA block is enabled.
+ - dma-names : "tx" for the transmit channel, "rx" for the receive channel. Set
+ this parameter if the I2S DMA block is enabled.
For more details on the 'dma', 'dma-names', 'clock' and 'clock-names'
properties please check:
@@ -23,6 +27,7 @@ Example:
soc_i2s: i2s at 7ff90000 {
compatible = "snps,designware-i2s";
reg = <0x0 0x7ff90000 0x0 0x1000>;
+ interrupts = <15>;
clocks = <&scpi_i2sclk 0>;
clock-names = "i2sclk";
#sound-dai-cells = <0>;
--
1.9.1
