From: Shawn Guo <shawnguo@kernel.org>
To: Li Yang <leoyang.li@nxp.com>
Cc: aisheng.dong@nxp.com, Grant Likely <grant.likely@arm.com>,
madalin.bucur@nxp.com, lkml <linux-kernel@vger.kernel.org>,
Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] arm64: defconfig: Enable FSL_EDMA driver
Date: Thu, 13 Jun 2019 08:45:10 +0800 [thread overview]
Message-ID: <20190613004508.GA20747@dragon> (raw)
In-Reply-To: <CADRPPNT2G20j2pvSEyqX=_WNDPrcNR+xCR_XZukbnSW19wFLNA@mail.gmail.com>
On Wed, Jun 12, 2019 at 03:01:29PM -0500, Li Yang wrote:
> On Thu, May 9, 2019 at 10:15 PM Shawn Guo <shawnguo@kernel.org> wrote:
> >
> > On Mon, Apr 22, 2019 at 01:30:56PM -0500, Li Yang wrote:
> > > Enables the FSL EDMA driver by default. This also works around an issue
> > > that imx-i2c driver keeps deferring the probe because of the DMA is not
> > > ready. And currently the DMA engine framework can not correctly tell
> > > if the DMA channels will truly become available later (it will never be
> > > available if the DMA driver is not enabled).
> > >
> > > This will cause indefinite messages like below:
> > > [ 3.335829] imx-i2c 2180000.i2c: can't get pinctrl, bus recovery not supported
> > > [ 3.344455] ina2xx 0-0040: power monitor ina220 (Rshunt = 1000 uOhm)
> > > [ 3.350917] lm90 0-004c: 0-004c supply vcc not found, using dummy regulator
> > > [ 3.362089] imx-i2c 2180000.i2c: can't get pinctrl, bus recovery not supported
> > > [ 3.370741] ina2xx 0-0040: power monitor ina220 (Rshunt = 1000 uOhm)
> > > [ 3.377205] lm90 0-004c: 0-004c supply vcc not found, using dummy regulator
> > > [ 3.388455] imx-i2c 2180000.i2c: can't get pinctrl, bus recovery not supported
> > > .....
> > >
> > > Signed-off-by: Li Yang <leoyang.li@nxp.com>
> >
> > Applied, thanks.
>
> Hi Shawn,
>
> Is it possible to move this patch to the -fix series so that it can
> reach the mainline earlier? It is having a boot failure in mainline
> for platforms using this device without this workaround.
Why would I2C device deferring cause boot failure on a platform? I'm
just trying to understand severity of the problem.
Shawn
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next prev parent reply other threads:[~2019-06-13 0:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-22 18:30 [PATCH] arm64: defconfig: Enable FSL_EDMA driver Li Yang
2019-05-10 3:05 ` Shawn Guo
2019-06-12 20:01 ` Li Yang
2019-06-13 0:45 ` Shawn Guo [this message]
2019-06-13 14:01 ` Leo Li
2019-06-18 6:31 ` Shawn Guo
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