Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Wed, 27 May 2020 07:03:50 +0200
From:   Sascha Hauer <s.hauer@pengutronix.de>
To:     Robin Gong <yibin.gong@nxp.com>
Cc:     mark.rutland@arm.com, broonie@kernel.org, robh+dt@kernel.org,
        catalin.marinas@arm.com, vkoul@kernel.org, will.deacon@arm.com,
        shawnguo@kernel.org, festevam@gmail.com,
        martin.fuzzey@flowbird.group, u.kleine-koenig@pengutronix.de,
        dan.j.williams@intel.com, linux-spi@vger.kernel.org,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de,
        linux-imx@nxp.com
Subject: Re: [PATCH v8 00/13] add ecspi ERR009165 for i.mx6/7 soc family
Message-ID: <20200527050350.GV11869@pengutronix.de>
References: <1590006865-20900-1-git-send-email-yibin.gong@nxp.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1590006865-20900-1-git-send-email-yibin.gong@nxp.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu, May 21, 2020 at 04:34:12AM +0800, Robin Gong 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.

For the series:

Acked-by: Sascha Hauer <s.hauer@pengutronix.de>

Sascha

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |