On Mon, Jun 11, 2012 at 6:50 AM, Vinod Koul <vinod.koul@xxxxxxxxxxxxxxx> wrote: > Do we have any users of peripheral to peripheral slave dma? > IIRC that is not the case, or does anyone know of existence or plans > for such a h/w? The U300 (COH901318) device can do this. The usecase is basically that the modem CPU sets up a PCM stream on the high-speed serial link (called MSL) and the DMA controller reads 16 bit words from this link and routes it directly to a PCM sink on an I2S hardware. Actually it runs in both directions during a voicecall, you can probably see the gain in power and CPU unload this will gain on a phone. However this is all out-of-tree code and not that big deal as it's a legacy platform. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
