How does the DMAQNUM map channel to a specific queue?

Hi Wang,

Thanks for your post.

As we know, the DMA channel queue number register (DMAQNUMn) allows us to program the DMA channels and its associated events to map to any event queue in the EDMA CC, but there is a mapping between DMA channels and their corresponding bits in DMAQNUMn, kindly refer Table 4-7 from keystone EDMA user guide as below:

http://www.ti.com/lit/ug/sprugs5a/sprugs5a.pdf

The above table would provide you the meaning of each value it holds in each DMA queue number DMAQNUM[n] as per your post. Also refer section 4.2.1.5 and Table 4-6 for DMAQNUMn field descriptions.

To my opinion, if a particular DMA event En and its corresponding bit fields holds the value of "0", then the respective events are queued on DMA event queue number 0. Likewise, if it holds the value of "1", then the corresponding events are queued on queue number 1 and similarly, if it holds "2", events are queued on queue number 2 and if holds "3", events are queued on queue number 3 and so on.

Thanks & regards,

Sivaraj K

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