Hi, On the iMX53, the sound chip sgtl5000 seems to get SDMA channel 0, but this code in drivers/dma/imx-sdma.c: /* not interested in channel 0 interrupts */ if (sdmac->channel == 0) return; causes the DMA to be ignored. If I comment out the above, I still get no sound... Anyone have any ideas? Thanks much for any help. Rick