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

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Message-ID: <5526CD6A.8010300@ti.com>
Date:	Thu, 9 Apr 2015 22:05:14 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Tony Lindgren <tony@...mide.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

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).

-- 
Péter
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