Add descriptions for entries needed for audio device to use DMA
channels for audio playback and capture.
Signed-off-by: Michael Sit Wei Hong <michael.wei.hong.sit@xxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
.../bindings/sound/intel,keembay-i2s.yaml | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/intel,keembay-i2s.yaml b/Documentation/devicetree/bindings/sound/intel,keembay-i2s.yaml
index d346e61ab708..e0658f122cbb 100644
--- a/Documentation/devicetree/bindings/sound/intel,keembay-i2s.yaml
+++ b/Documentation/devicetree/bindings/sound/intel,keembay-i2s.yaml
@@ -45,6 +45,18 @@ properties:
- const: osc
- const: apb_clk
+ dmas:
+ items:
+ - description: DMA controller phandle and DMA channel
+ for TX and RX
+
+ dma-names:
+ items:
+ - description: "tx" for the transmit channel
+ "rx" for the receive channel
+ - const: tx
+ - const: rx
+
required:
- compatible
- "#sound-dai-cells"
@@ -70,4 +82,6 @@ examples:
interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
clock-names = "osc", "apb_clk";
clocks = <&scmi_clk KEEM_BAY_PSS_AUX_I2S3>, <&scmi_clk KEEM_BAY_PSS_I2S3>;
+ dmas = <&axi_dma0 29 &axi_dma0 33>;
+ dma-names = "tx", "rx";
};
--
2.17.1
