linux-kernel - Re: [PATCH v5 8/8] ARM: DTS: dra7x: Integrate sDMA crossbar

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Message-ID: <20150409191206.GU18048@atomide.com>
Date:	Thu, 9 Apr 2015 12:12:07 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	vinod.koul@...el.com, linux@....linux.org.uk,
	grant.likely@...aro.org, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	robh+dt@...nel.org, nm@...com, arnd@...db.de,
	maxime.ripard@...e-electrons.com
Subject: Re: [PATCH v5 8/8] ARM: DTS: dra7x: Integrate sDMA crossbar

* Peter Ujfalusi <peter.ujfalusi@...com> [150409 12:07]:
> On 04/09/2015 10:01 PM, Tony Lindgren wrote:
> > * Peter Ujfalusi <peter.ujfalusi@...com> [150409 11:55]:
> >> On 04/09/2015 06:18 PM, Tony Lindgren wrote:
> >>> * Peter Ujfalusi <peter.ujfalusi@...com> [150409 02:37]:
> >>>> The sDMA requests are routed through the DMA crossbar and without the
> >>>> crossbar only peripherals using DMA request 0-127 can be used.
> >>>
> >>> I assume this can be merged separately from the driver
> >>> changes?
> >>
> >> Unfortunately not. We need to have the drivers in place for the DTS changes to
> >> work.
> > 
> > Right but just merging the driver changes presumably won't
> > break things?
> 
> No, they will not break anything. We just do not have control over the DMA
> crossbar (in a same way as we don't have control right now).

OK good to hear.

Thanks,

Tony
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