linux-kernel - Re: [PATCHv4] dmaengine: fsl-edma: fixup reg offset and hw S/G support in big-endian model

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Message-ID: <20141209091248.GA16827@intel.com>
Date:	Tue, 9 Dec 2014 14:42:48 +0530
From:	Vinod Koul <vinod.koul@...el.com>
To:	Jingchang Lu <jingchang.lu@...escale.com>
Cc:	dmaengine@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv4] dmaengine: fsl-edma: fixup reg offset and hw S/G
 support in big-endian model

On Wed, Oct 22, 2014 at 04:53:55PM +0800, Jingchang Lu wrote:
> The offset of all 8-/16-bit registers in big-endian eDMA model are
> swapped in a 32-bit size opposite those in the little-endian model.
> 
> The hardware Scatter/Gather requires the subsequent TCDs stored in memory
> in little endian independent of the register endian model, the eDMA engine
> will do the swap if need.
> 
> This patch also use regular assignment for tcd variables r/w
> instead of with io function previously that may not always be true.
Applied, thanks

-- 
~Vinod

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