From: Marek Vasut <marex@denx.de>
To: Lothar =?iso-8859-1?q?Wa=DFmann?= <LW@karo-electronics.de>
Subject: Re: [PATCH 1/3] i2c: add DMA support for freescale i2c driver
Date: Fri, 28 Feb 2014 13:00:30 +0100
User-Agent: KMail/1.13.7 (Linux/3.13-trunk-amd64; KDE/4.11.3; x86_64; ; )
Cc: Yao Yuan <yao.yuan@freescale.com>,
        "mark.rutland@arm.com" <mark.rutland@arm.com>,
        "wsa@the-dreams.de" <wsa@the-dreams.de>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-i2c@vger.kernel.org" <linux-i2c@vger.kernel.org>,
        "shawn.guo@linaro.org" <shawn.guo@linaro.org>,
        "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
References: <1393481115-22136-1-git-send-email-yao.yuan@freescale.com> <201402281004.10238.marex@denx.de> <20140228115925.5fe07693@ipc1.ka-ro>
In-Reply-To: <20140228115925.5fe07693@ipc1.ka-ro>
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On Friday, February 28, 2014 at 11:59:25 AM, Lothar Wa?mann wrote:
> Hi,
> 
> Marek Vasut wrote:
> > On Friday, February 28, 2014 at 06:19:18 AM, Yao Yuan wrote:
> > 
> > [...]
> > 
> > > Yes, here have two dma channels, one for RX and the other one for TX.
> > > When we request the channel we should determine it for TX or RX.
> > 
> > Sorry, I don't quite understand this. If you have two DMA channels, can
> > you not use them both to do full-duplex SPI transfer ?
> 
> SPI != I2C

You got me, sorry.

Best regards,
Marek Vasut
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