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From: "Fuzzey, Martin" <martin.fuzzey@flowbird.group>
To: Robin Gong <yibin.gong@nxp.com>
Cc: "Sascha Hauer" <s.hauer@pengutronix.de>,
	vkoul@kernel.org, "Shawn Guo" <shawnguo@kernel.org>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Mark Brown" <broonie@kernel.org>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Fabio Estevam" <festevam@gmail.com>,
	dan.j.williams@intel.com, mark.rutland@arm.com,
	catalin.marinas@arm.com, "Will Deacon" <will.deacon@arm.com>,
	"Lucas Stach" <l.stach@pengutronix.de>,
	"Sascha Hauer" <kernel@pengutronix.de>,
	linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	"Linux-Kernel@Vger. Kernel. Org" <linux-kernel@vger.kernel.org>,
	dl-linux-imx <linux-imx@nxp.com>,
	dmaengine@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v7 00/13] add ecspi ERR009165 for i.mx6/7 soc family
Date: Wed, 15 Apr 2020 11:47:11 +0200	[thread overview]
Message-ID: <CANh8QzwanSewjJ98HL_yR1juiHo1RN77JQyNNKrMrud3B0dnww@mail.gmail.com> (raw)
In-Reply-To: <1583944596-23410-1-git-send-email-yibin.gong@nxp.com>

Hi Robin,


On Wed, 11 Mar 2020 at 09:35, Robin Gong <yibin.gong@nxp.com> wrote:
>
> There is ecspi ERR009165 on i.mx6/7 soc family, which cause FIFO
> transfer to be send twice in DMA mode. Please get more information from:
> https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf. The workaround is adding
> new sdma ram script which works in XCH  mode as PIO inside sdma instead
> of SMC mode, meanwhile, 'TX_THRESHOLD' should be 0. The issue should be
> exist on all legacy i.mx6/7 soc family before i.mx6ul.
> NXP fix this design issue from i.mx6ul, so newer chips including i.mx6ul/
> 6ull/6sll do not need this workaroud anymore. All other i.mx6/7/8 chips
> still need this workaroud. This patch set add new 'fsl,imx6ul-ecspi'
> for ecspi driver and 'ecspi_fixed' in sdma driver to choose if need errata
> or not.
> The first two reverted patches should be the same issue, though, it
> seems 'fixed' by changing to other shp script. Hope Sean or Sascha could
> have the chance to test this patch set if could fix their issues.
> Besides, enable sdma support for i.mx8mm/8mq and fix ecspi1 not work
> on i.mx8mm because the event id is zero.
>
> PS:
>    Please get sdma firmware from below linux-firmware and copy it to your
> local rootfs /lib/firmware/imx/sdma.
> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/imx/sdma
>

A couple of questions

1) Is this series needed for the i.MX6DL? (the document you linked
only seems to mention i.MX6D/Q
2) If the laterst SDMA firmware mentionned above is used will this
break systems running mainline kernels without this patch series
applied?

Regards,

Martin

  parent reply	other threads:[~2020-04-15  9:47 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 16:36 Robin Gong
2020-03-11 16:36 ` [PATCH v7 08/13] spi: imx: remove ERR009165 workaround on i.mx6ul Robin Gong
     [not found] ` <1583944596-23410-1-git-send-email-yibin.gong-3arQi8VN3Tc@public.gmane.org>
2020-03-11 16:36   ` [PATCH v7 01/13] Revert "ARM: dts: imx6q: Use correct SDMA script for SPI5 core" Robin Gong
2020-03-11 16:36   ` [PATCH v7 02/13] Revert "ARM: dts: imx6: Use correct SDMA script for SPI cores" Robin Gong
2020-03-11 16:36   ` [PATCH v7 03/13] Revert "dmaengine: imx-sdma: fix context cache" Robin Gong
2020-03-11 16:36   ` [PATCH v7 04/13] Revert "dmaengine: imx-sdma: refine to load context only once" Robin Gong
2020-03-11 16:36   ` [PATCH v7 05/13] dmaengine: imx-sdma: remove dupilicated sdma_load_context Robin Gong
2020-03-11 16:36   ` [PATCH v7 06/13] dmaengine: imx-sdma: add mcu_2_ecspi script Robin Gong
2020-03-11 16:36   ` [PATCH v7 07/13] spi: imx: fix ERR009165 Robin Gong
2020-03-11 16:36   ` [PATCH v7 09/13] spi: imx: add new i.mx6ul compatible name in binding doc Robin Gong
2020-03-11 16:36   ` [PATCH v7 10/13] dmaengine: imx-sdma: remove ERR009165 on i.mx6ul Robin Gong
2020-03-11 16:36   ` [PATCH v7 12/13] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm Robin Gong
2020-03-11 16:36 ` [PATCH v7 11/13] dma: imx-sdma: add i.mx6ul compatible name Robin Gong
2020-03-11 16:36 ` [PATCH v7 13/13] dmaengine: imx-sdma: add uart rom script Robin Gong
2020-04-15  8:41 ` [PATCH v7 00/13] add ecspi ERR009165 for i.mx6/7 soc family Robin Gong
2020-04-15  9:19   ` Mark Brown
2020-04-15 13:57     ` Robin Gong
2020-04-15  9:47 ` Fuzzey, Martin [this message]
2020-04-15 14:06   ` Robin Gong

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