* RE: Re: [PATCH v3 11/14] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm
@ 2019-05-21 4:58 Robin Gong
2019-05-21 5:12 ` Vinod Koul
0 siblings, 1 reply; 2+ messages in thread
From: Robin Gong @ 2019-05-21 4:58 UTC (permalink / raw)
To: Vinod Koul
Cc: robh, broonie, shawnguo, s.hauer, festevam, mark.rutland,
u.kleine-koenig, plyatov, dan.j.williams, catalin.marinas,
will.deacon, l.stach, dl-linux-imx, linux-spi, linux-arm-kernel,
linux-kernel, dmaengine, devicetree, kernel
> -----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.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Re: [PATCH v3 11/14] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm
2019-05-21 4:58 Re: [PATCH v3 11/14] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm Robin Gong
@ 2019-05-21 5:12 ` Vinod Koul
0 siblings, 0 replies; 2+ messages in thread
From: Vinod Koul @ 2019-05-21 5:12 UTC (permalink / raw)
To: Robin Gong
Cc: robh, broonie, shawnguo, s.hauer, festevam, mark.rutland,
u.kleine-koenig, plyatov, dan.j.williams, catalin.marinas,
will.deacon, l.stach, dl-linux-imx, linux-spi, linux-arm-kernel,
linux-kernel, dmaengine, devicetree, kernel
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 :)
--
~Vinod
^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-05-21 4:58 Re: [PATCH v3 11/14] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm Robin Gong
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