On 17-03-19, 19:03, Katsuhiro Suzuki wrote: > This patch adds debugfs interface to show the relationship between > DMA threads (hardware resource for transferring data) and DMA > channel ID of DMA slave. > > Typically, PL330 has many slaves than number of DMA threads. > So sometimes PL330 cannot allocate DMA threads for all slaves even > if a user specify DMA channel ID in devicetree. This interface will > be useful for checking that DMA threads are allocated or not. > > Below is an output sample: > > $ sudo cat /sys/kernel/debug/ff1f0000.dmac > PL330 physical channels: > THREAD: CHANNEL: > -------- ----- > 0 8 > 1 9 > 2 11 > 3 12 > 4 14 > 5 15 > 6 10 > 7 -- > Applied, thanks -- ~Vinod
