On SoC like i.MX8QXP some SAI IP cores support only Rx path. Allow
specifying only an Rx DMA channel, while omitting the Tx one.
Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
---
The feature list in reference manual IMX8DQXPRM Rev. 0 05/2020
section 1.1.2 "Features" explicitly state that SAI2 and SAI3 is
receive only.
Documentation/devicetree/bindings/sound/fsl,sai.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/fsl,sai.yaml b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
index e90286f9b5fd..1580b1759fad 100644
--- a/Documentation/devicetree/bindings/sound/fsl,sai.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
@@ -79,11 +79,13 @@ properties:
maxItems: 1
dmas:
+ minItems: 1
items:
- description: DMA controller phandle and request line for RX
- description: DMA controller phandle and request line for TX
dma-names:
+ minItems: 1
items:
- const: rx
- const: tx
--
2.34.1
