From: "Lothar Waßmann" <LW@KARO-electronics.de>
To: Marek Vasut <marex@denx.de>
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>
Subject: Re: [PATCH 1/3] i2c: add DMA support for freescale i2c driver
Date: Fri, 28 Feb 2014 11:59:25 +0100 [thread overview]
Message-ID: <20140228115925.5fe07693@ipc1.ka-ro> (raw)
In-Reply-To: <201402281004.10238.marex@denx.de>
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
Lothar Waßmann
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next prev parent reply other threads:[~2014-02-28 10:59 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-27 6:05 [PATCH 0/3] " Yuan Yao
2014-02-27 6:05 ` [PATCH 1/3] " Yuan Yao
2014-02-27 12:55 ` Shawn Guo
2014-02-27 13:21 ` Shawn Guo
2014-02-27 20:39 ` Marek Vasut
2014-02-28 2:13 ` Shawn Guo
2014-02-28 2:23 ` Shawn Guo
2014-02-28 8:57 ` Marek Vasut
2014-02-28 5:19 ` Yao Yuan
2014-02-28 9:04 ` Marek Vasut
2014-02-28 10:59 ` Lothar Waßmann [this message]
2014-02-28 12:00 ` Marek Vasut
2014-02-28 11:36 ` Yao Yuan
2014-02-28 12:03 ` Marek Vasut
2014-03-03 10:23 ` Yao Yuan
2014-03-03 11:14 ` Marek Vasut
2014-02-27 6:05 ` [PATCH 3/3] Documentation:add " Yuan Yao
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