[PATCH v5 1/3] dt-bindings: dma: arm-dma350: document combined and per-channel IRQ topologies

Jun Guo
2026-03-24T12:01:22Z

Document the interrupt topologies supported by DMA-350 integration:
- one combined interrupt for all channels, or
- one interrupt per channel (up to 8 channels).

Assisted-by: Cursor:GPT-5.3-Codex
Signed-off-by: Jun Guo <jun.guo@cixtech.com>
---
.../devicetree/bindings/dma/arm,dma-350.yaml | 25 ++++++++++++-------
1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
index 429f682f15d8..bec9dc32541b 100644
--- a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
+++ b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
@@ -22,15 +22,22 @@ properties:

interrupts:
minItems: 1
- items:
- - description: Channel 0 interrupt
- - description: Channel 1 interrupt
- - description: Channel 2 interrupt
- - description: Channel 3 interrupt
- - description: Channel 4 interrupt
- - description: Channel 5 interrupt
- - description: Channel 6 interrupt
- - description: Channel 7 interrupt
+ maxItems: 8
+ description:
+ Either one interrupt per channel (8 interrupts), or one
+ combined interrupt for all channels.
+ oneOf:
+ - items:
+ - description: Channel 0 interrupt
+ - description: Channel 1 interrupt
+ - description: Channel 2 interrupt
+ - description: Channel 3 interrupt
+ - description: Channel 4 interrupt
+ - description: Channel 5 interrupt
+ - description: Channel 6 interrupt
+ - description: Channel 7 interrupt
+ - items:
+ - description: Combined interrupt shared by all channels

"#dma-cells":
const: 1
--
2.34.1