linux-kernel - Re: [PATCH v2 1/2] i2c: mediatek: add i2c first write then read optimization

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Date:	Tue, 1 Dec 2015 01:56:55 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Liguo Zhang <liguo.zhang@...iatek.com>
Cc:	srv_heupstream@...iatek.com,
	Matthias Brugger <matthias.bgg@...il.com>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Xudong Chen <xudong.chen@...iatek.com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2 1/2] i2c: mediatek: add i2c first write then read
 optimization

On Mon, Nov 09, 2015 at 01:43:58PM +0800, Liguo Zhang wrote:
> For platform with auto restart support, between every transfer,
> i2c controller will trigger an interrupt and SW need to handle
> it to start new transfer. When doing write-then-read transfer,
> instead of restart mechanism, using WRRD mode to have controller
> send both transfer in one request to reduce latency.
> 
> Signed-off-by: Liguo Zhang <liguo.zhang@...iatek.com>
> Reviewed-by: Eddie Huang <eddie.huang@...iatek.com>

Applied to for-next, thanks!


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