linux-kernel - Re: Issues with i.MX SPI DMA transfers

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Date:   Thu, 18 Apr 2019 08:05:11 +0000
From:   Robin Gong <yibin.gong@....com>
To:     "plyatov@...il.com" <plyatov@...il.com>
CC:     dl-linux-imx <linux-imx@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andy Duan <fugang.duan@....com>,
        "u.kleine-koenig@...gutronix.de" <u.kleine-koenig@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        Han Xu <han.xu@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Clark Wang <xiaoning.wang@....com>,
        "vkoul@...nel.org" <vkoul@...nel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>
Subject: Re: Issues with i.MX SPI DMA transfers

On 2019-04-18 at 06:30 +0000, Igor Plyatov wrote:
> WARNING: This email was created outside of NXP. DO NOT CLICK links or
> attachments unless you recognize the sender and know the content is
> safe.
> 
> 
> 
> Dear Robin,
> 
> > 
> > Hi Igor,
> >       Did you meet any issue with my latest patch?
> sorry, but unfortunately I have no time to test it.
> 
> I have switched to PIO mode and continue other development.
> 
> Maybe later I will find time to test DMA mode, but not sure when.
> 
> Thank you for support!
Okay, I'll send out patch set to review, hope you could have chance to
try.
> 
> --
> 
> Igor Plyatov
> 
> > 
> > > 
> > > -----Original Message-----
> > > From: Robin Gong
> > > Sent: April 9, 2019 11:26>
> > > Hi Igor,
> > >      Please have a try with the attached patches, and revert
> > > 25aaa75df1e6,
> > > ad0d92d7ba6a , dd4b487b32a3, df07101e1c4a before apply. Besides
> > > XCH, tx
> > > thresh should be set to 0 , now no failure caught on ecspi5.
> > >