Hi, On Thursday, February 18, 2016 07:07:28 PM Alexander Kochetkov wrote: > Hello! > > Bartlomiej, could you please tell what uart driver is used on Samsung > Exynos4412? > Dinh, could you please tell what uart driver is used on SoCFPGA? drivers/tty/serial/samsung.c > Could you make two test? > > 1) Checkout tree at commit 848e9776fee4 "dmaengine: pl330: support > burst mode for > dev-to-mem and mem-to-dev transmit", make it buildable and see is it > works. In order to make in buildable remove bursts argument from the > line: > > if (*bursts == 1) > - return _bursts(pl330, dry_run, buf, pxs, 1); > + return _bursts(dry_run, buf, pxs, 1); This fails (UART DMA doesn't work). > 2) Checkout next-20160211 kernel tree and set src_maxburst and > dst_maxburst to 1 inside UART driver to see is it works? This succeeds (UART DMA works fine). Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
