linux-kernel - Re: [PATCH] i2c-designware: Manually set RESTART bit between messages

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Message-ID: <20130807142847.GC2978@katana>
Date:	Wed, 7 Aug 2013 16:28:47 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Chew Chiau Ee <chiaue.ee.chew@...el.com>
Cc:	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c-designware: Manually set RESTART bit between messages

On Fri, Jun 21, 2013 at 03:05:28PM +0800, Chew Chiau Ee wrote:
> From: Chew, Chiau Ee <chiau.ee.chew@...el.com>
> 
> If both IC_EMPTYFIFO_HOLD_MASTER_EN and IC_RESTART_EN are set to 1, the
> Designware I2C controller doesn't generate RESTART unless user specifically
> requests it by setting RESTART bit in IC_DATA_CMD register.
> 
> Since IC_EMPTYFIFO_HOLD_MASTER_EN setting can't be detected from hardware
> register, we must always manually set the restart bit between messages.
> 
> Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@...el.com>

Applied to for-next, thanks!


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