Messages in this thread | | | Subject | Re: commit 271e1b86e691 is breaking DMA uart on SoCFPGA | From | Caesar Wang <> | Date | Thu, 25 Feb 2016 08:29:57 +0800 |
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在 2016年02月24日 21:24, Bartlomiej Zolnierkiewicz 写道: > Hi, > > On Wednesday, February 24, 2016 02:01:59 PM Caesar Wang wrote: >> Hi, >> >> Thanks Dinh & Alexander for the intergration testing. >> >> --- >> >> @Dinh, >> >> Can you test it again with the patch[0]? >> >> patch[0]: >> https://patchwork.kernel.org/patch/8398511/ > This fixes the problem for me (tested on Samsung Exynos4412 SoC > based Trats2 board). > > You may add: > > Tested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Thanks Bartlomiej for sharing the test result.:-)
- Caesar > > to your patch. > > Best regards, > -- > Bartlomiej Zolnierkiewicz > Samsung R&D Institute Poland > Samsung Electronics > >> - >> 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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