[PATCH v1 4/5] dmaengine: arm-dma350: Honour dma-channel-mask

Jelly Jia Jelly.Jia at cixtech.com
Wed Oct 28 22:18:34 PDT 2026


Hi Frank,

On Wed, Oct 28, 2026 at 12:47:38PM -0400, Frank Li wrote:
> dma-channel-mask is u32 array. If nchan >= 32, you should check
> dma-channel-mask[1].

Thanks for reviewing. Yes, the common property is a u32 array.
For DMA-350, however, the TRM specifies:
"Number of DMA channels between 1 and 8 (NUM_CHANNELS)".

A single u32 therefore covers all supported channels, and patch 3/5
also restricts dma-channel-mask to maxItems: 1.

Best regards,
Jelly



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