From: Shawn Guo <shawn.guo@linaro.org>
To: Fabio Estevam <festevam@gmail.com>
Cc: wsa@the-dreams.de, marex@denx.de, kernel@pengutronix.de,
linux-i2c@vger.kernel.org, alexandre.belloni@free-electrons.com,
to-fleischer@t-online.de,
Fabio Estevam <fabio.estevam@freescale.com>,
stable@vger.kernel.org
Subject: Re: [PATCH v2] i2c: i2c-mxs: Use DMA mode even for small transfers
Date: Tue, 2 Jul 2013 10:23:44 +0800 [thread overview]
Message-ID: <20130702022342.GZ13206@S2101-09.ap.freescale.net> (raw)
In-Reply-To: <1372713261-20551-1-git-send-email-festevam@gmail.com>
On Mon, Jul 01, 2013 at 06:14:21PM -0300, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
>
> Recently we have been seing some reports about PIO mode not working properly.
>
> - http://www.spinics.net/lists/linux-i2c/msg11985.html
> - http://marc.info/?l=linux-i2c&m=137235593101385&w=2
> - https://lkml.org/lkml/2013/6/24/430
>
It also causes sgtl5000 register write failure [1]. Changing it back to
DMA mode fixes the failure. So,
Acked-by: Shawn Guo <shawn.guo@linaro.org>
[1] http://thread.gmane.org/gmane.linux.alsa.devel/109715/focus=109747
next prev parent reply other threads:[~2013-07-02 2:23 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-01 21:14 [PATCH v2] i2c: i2c-mxs: Use DMA mode even for small transfers Fabio Estevam
2013-07-02 2:23 ` Shawn Guo [this message]
2013-07-15 13:30 ` Fabio Estevam
[not found] ` <CAOMZO5Dyk_5CzcXvG7eJ3h07i=So0DS7MjtMQVHfpfx9Se_Teg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-15 14:12 ` Marek Vasut
2013-07-23 18:15 ` Fabio Estevam
2013-07-24 3:02 ` Marek Vasut
2013-07-24 3:09 ` Fabio Estevam
2013-07-26 0:46 ` Ben Hutchings
2013-07-26 4:20 ` Marek Vasut
[not found] ` <1372713261-20551-1-git-send-email-festevam-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-07-02 8:16 ` Lucas Stach
2013-07-03 2:38 ` Marek Vasut
[not found] ` <201307030438.50069.marex-ynQEQJNshbs@public.gmane.org>
2013-07-03 4:37 ` Marek Vasut
2013-07-03 8:33 ` Alexandre Belloni
[not found] ` <51D3E1D2.4070706-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
2013-07-03 11:41 ` Marek Vasut
[not found] ` <201307030637.05324.marex-ynQEQJNshbs@public.gmane.org>
2013-07-03 9:11 ` Lucas Stach
[not found] ` <1372842695.4440.3.camel-WzVe3FnzCwFR6QfukMTsflXZhhPuCNm+@public.gmane.org>
2013-07-03 11:39 ` Marek Vasut
2013-08-05 8:11 ` Wolfram Sang
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