On Friday 23 January 2009, Philby John wrote: > DM355 has 2 EDMA event queues and both > are at present used by the MMC and the vdce driver respectively. So if > you do want to use it for SPI, you must disable MMC or vdce and change > the code in davinci_request_dma() to EVENTQ_0 or EVENTQ_1
Huh?? The whole point behind having a *QUEUE* is that each TC can have a bunch of transfers ready to go. ISTR a "bunch" is up to sixteen -- in each queue. SPI might use two transfers concurrently; ditto audio. MMC would only use one at a time. Per TI docs, TC0 should be high priority for short transfers, and TC1 should be low priority for bulk. But those are "serving suggestions"; some systems might want to use them differently. - Dave _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
