Hey Peter, On 28-10-20, 11:56, Peter Ujfalusi wrote: > Hi Vinod, > > On 28/10/2020 7.55, Vinod Koul wrote: > > >> 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. > > > 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
