Thread (12 messages) 12 messages, 3 authors, 2026-03-25

Re: [PATCH v4 1/3] dt-bindings: dma: arm-dma350: document generic and combined IRQ topologies

From: Jun Guo <hidden>
Date: 2026-03-23 12:14:05
Also in: dmaengine, linux-devicetree, lkml


On 3/23/2026 8:00 PM, Krzysztof Kozlowski wrote:
EXTERNAL EMAIL

On 23/03/2026 12:48, Jun Guo wrote:
quoted
Update the DMA-350 DT binding to match the current driver behavior.

Allow both:
- "arm,dma-350" as the generic compatible, and
- "cix,sky1-dma-350", "arm,dma-350" for SoC-specific fallback usage.

Also document interrupt topology variants supported by hardware
integration:
- one combined interrupt for all channels, or
- one interrupt per channel (up to 8 channels).

Assisted-by: Cursor: GPT-5.3-Codex
There is no space here. Read the docs, I quite insisted on this last
time. If you make mistakes in this, I doubt you read the docs thus I
doubt you followed the requirements - have actual rights to send it for
example.
Sorry, I did overlook the format between AGENT_NAME and MODEL_VERSION. I 
will fix it.
quoted
Signed-off-by: Jun Guo <redacted>
---
  .../devicetree/bindings/dma/arm,dma-350.yaml  | 34 +++++++++++++------
  1 file changed, 24 insertions(+), 10 deletions(-)
diff --git a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
index 429f682f15d8..47091614d1b4 100644
--- a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
+++ b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
@@ -14,7 +14,14 @@ allOf:

  properties:
    compatible:
-    const: arm,dma-350
+    description:
+      Use "arm,dma-350" for generic integration. A SoC-specific
+      compatible may be listed first, followed by "arm,dma-350".
What is the point of explaining it? What is the difference between
generic integration and non-generic?
I might not need to add the "cix,sky1-dma-350" and can directly use 
"arm,dma-350" instead. I will rework the code and description accordingly.

Best regards,
Jun

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