* Re: Re: Re: [PATCH v3 11/14] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm
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@ 2019-05-21 6:12 ` Vinod Koul
0 siblings, 0 replies; only message in thread
From: Vinod Koul @ 2019-05-21 6:12 UTC (permalink / raw)
To: Robin Gong
Cc: mark.rutland@arm.com, robh@kernel.org, catalin.marinas@arm.com,
devicetree@vger.kernel.org, festevam@gmail.com,
s.hauer@pengutronix.de, plyatov@gmail.com, will.deacon@arm.com,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
broonie@kernel.org, dl-linux-imx, kernel@pengutronix.de,
u.kleine-koenig@pengutronix.de, dmaengine@vger.kernel.org,
dan.j.williams@intel.com, shawnguo@kernel.org,
linux-arm-kernel@lists.infradead.org, l.stach@pengutronix.de
On 21-05-19, 05:41, Robin Gong wrote:
> > -----Original Message-----
> > From: Vinod Koul <vkoul@kernel.org>
> > Sent: 2019年5月21日 13:13
> >
> > On 21-05-19, 04:58, Robin Gong wrote:
> > > > -----Original Message-----
> > > > From: Vinod Koul <vkoul@kernel.org>
> > > > Sent: 2019年5月21日 12:18
> > > >
> > > > On 07-05-19, 09:16, Robin Gong wrote:
> > > > > Because the number of ecspi1 rx event on i.mx8mm is 0, the
> > > > > condition check ignore such special case without dma channel
> > > > > enabled, which caused
> > > > > ecspi1 rx works failed. Actually, no need to check event_id0,
> > > > > checking
> > > > > event_id1 is enough for DEV_2_DEV case because it's so lucky that
> > > > > event_id1 never be 0.
> > > >
> > > > Well is that by chance or design that event_id1 will be never 0?
> > > >
> > > That's by chance. DEV_2_DEV is just for Audio case and non-zero for
> > event_id1 on current i.MX family.
> >
> > Then it wont be fgood to rely on chance :)
> Yes, I knew that. May I create another independent patch for event_id1 since that's potential issue is not related with this ecspi patch set?
Sure a patch should change one thing but I think it should come before
this one. The log for this should be fixed up as well
--
~Vinod
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