linux-kernel - Re: [PATCH 0/7] dmaengine:omap-dma: Linked List transfer for slave

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Message-ID: <20160718103137.GG5783@n2100.arm.linux.org.uk>
Date:	Mon, 18 Jul 2016 11:31:37 +0100
From:	Russell King - ARM Linux <linux@...linux.org.uk>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	vinod.koul@...el.com, linux-kernel@...r.kernel.org,
	dmaengine@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-omap@...r.kernel.org, tony@...mide.com
Subject: Re: [PATCH 0/7] dmaengine:omap-dma: Linked List transfer for slave_sg

On Thu, Jul 14, 2016 at 03:42:35PM +0300, Peter Ujfalusi wrote:
> Hi,
> 
> The following series with the final patch will add support for sDMA Linked List
> transfer support.
> Linked List is supported by sDMA in OMAP3630+ (OMAP4/5, dra7 family).
> If the descriptor load feature is present we can create the descriptors for each
> SG beforehand and let sDMA to walk them through.
> This way the number of sDMA interrupts the kernel need to handle will drop
> dramatically.

I suggested this a few years ago, and I was told by TI that there was
no interest to implement this feature as it had very little performance
effect.  Do I take it that TI have changed their position on this
feature?

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
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