Hi Igor,
Please have a try with the attached patch, assume you have already used
the sdma firmware
From
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/imx/sdma/sdma-imx6q.bin
> -----Original Message-----
> From: Igor Plyatov <plya...@gmail.com>
> Sent: 2019年3月28日 15:04
> To: Uwe Kleine-König <u.kleine-koe...@pengutronix.de>
> Cc: linux-kernel@vger.kernel.org; linux-arm-ker...@lists.infradead.org;
> linux-...@vger.kernel.org; dl-linux-imx <linux-...@nxp.com>; Fabio Estevam
> <feste...@gmail.com>; Pengutronix Kernel Team <ker...@pengutronix.de>;
> Sascha Hauer <s.ha...@pengutronix.de>; Shawn Guo
> <shawn...@kernel.org>; Mark Brown <broo...@kernel.org>;
> dmaeng...@vger.kernel.org; Vinod Koul <vk...@kernel.org>; Dan Williams
> <dan.j.willi...@intel.com>; Andy Duan <fugang.d...@nxp.com>; Han Xu
> <han...@nxp.com>; Robin Gong <yibin.g...@nxp.com>; Clark Wang
> <xiaoning.w...@nxp.com>
> Subject: Re: Issues with i.MX SPI DMA transfers
>
> Dear Uwe,
>
>
> > Hello Igor,
> >
> > On Wed, Mar 27, 2019 at 08:40:00PM +0300, Igor Plyatov wrote:
> >> please, help to resolve two issues with SPI DMA transfers at i.MX6Q
> >> platform.
> >>
> >> First issue is
> >> [ 4465.008003] spi_master spi0: I/O Error in DMA RX
> >>
> >> Second issue is duplication for one of received bytes.
> >>
> >> Probably, these issues related to each one.
> > This is probably the same problem I hit some time ago. Check ERR009165
> > in the errata. You either need to disable DMA or need a fixed
> > sdma-Script.
>
> disabling of DMA is not an option, because high throughput required for SPI
> bus
> to communicate with DSPs.
>
> I'm aware of ERR009165, but as I write some minutes earlier to list,
> spi0 (alias for ecspi1) and spi1 (alias for ecspi2) work flawless, while
> spi4 (alias for ecspi5) fails very fast.
>
> Does same SDMA script used for all SPI interfaces or scripts are different?
>
> Best wishes.
>
> --
>
> Igor Plyatov
0001-dma-engine-imx-sdma-add-mcu_2_ecspi-script.patch
Description: 0001-dma-engine-imx-sdma-add-mcu_2_ecspi-script.patch
0002-spi-spi-imx-fix-ERR009165.patch
Description: 0002-spi-spi-imx-fix-ERR009165.patch
