[PATCH v2 1/3] dt-bindings: lgm-dma: Added intel,dma-sw-desc property.

[Zhu Yixin <yzhu@maxlinear.com>]

If the intel,dma-sw-desc property is present, it indicates that
the DMA driver is responsible for managing the DMA engine, including
handing the DMA descriptors.
If this property is present, the system defaults to a mode where
another hardware component takes control of the DMA engine.
In this case, the hardware can generate and manage descriptors
independently, without driver involvement.

This property only takes effect on HDMA(DMAV3x).

Signed-off-by: Zhu Yixin <yzhu@maxlinear.com>
---
 Documentation/devicetree/bindings/dma/intel,ldma.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/intel,ldma.yaml b/Documentation/devicetree/bindings/dma/intel,ldma.yaml
index d6bb553a2c6f..426168b8709e 100644
--- a/Documentation/devicetree/bindings/dma/intel,ldma.yaml
+++ b/Documentation/devicetree/bindings/dma/intel,ldma.yaml
@@ -80,6 +80,12 @@ properties:
       if it is disabled, the DMA RX will still support programmable fixed burst size of 2,4,8,16.
       It only applies to RX DMA and memcopy DMA.
 
+  intel,dma-sw-desc:
+    type: boolean
+    description:
+      Indicates that the DMA driver should operate in software-managed mode.
+      If this property is not present, it implies that DMA descriptors are managed and generated by another hardware component that controls the DMA engine.
+
 required:
   - compatible
   - reg
-- 
2.43.5