Messages in this thread | | | Subject | Re: commit 271e1b86e691 is breaking DMA uart on SoCFPGA | From | Caesar Wang <> | Date | Wed, 24 Feb 2016 14:01:59 +0800 |
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Hi,
Thanks Dinh & Alexander for the intergration testing.
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@Dinh,
Can you test it again with the patch[0]?
patch[0]: https://patchwork.kernel.org/patch/8398511/
- Caesar 在 2016年02月23日 23:14, Dinh Nguyen 写道: > Hi, > > Sorry that I couldn't get to this sooner. > > On 02/18/2016 10:07 AM, 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? >> > SoCFPGA is using the 8250_dw.c uart driver. > >> 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 case still fails for me. > >> 2) Checkout next-20160211 kernel tree and set src_maxburst and >> dst_maxburst to 1 inside UART driver to see is it works? >> > This case works and the UART is able to operate in DMA mode. > > Dinh > > > > > -- > Thanks, > Caesar
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