Hey Peter,

On 28-10-20, 11:56, Peter Ujfalusi wrote:

Hi Vinod,

On 28/10/2020 7.55, Vinod Koul wrote:

quoted

quoted

To summarize:
In of_dma_route_allocate() the router does not yet know the channel we
are going to get.
In of_dma_xlate() the DMA driver does not yet know if the channel will
use router or not.
I need to tell the router the event number it has to send, which is
based on the channel number I got.

Sounds reasonable, btw why not pass this information in xlate. Router
will have a different xlate rather than non router right, or is it same.

Yes, the router's have their separate xlate, but in that xlate we do not
yet have a channel. I don't know what is the event I need to send from
the router to trigger the channel.

quoted

If this information is anyway available in DT might be better to get it
and use from DT

Without a channel number I can not do anything.
It is close to a chicken and egg problem.

We get 'channel' in xlate, so wont that help? I think I am still missing
something here :(


-- 
~Vinod

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