From: b32955@freescale•com (Huang Shijie)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v2 2/3] serial: mxs-auart: add the DMA support for mx28
Date: Thu, 15 Nov 2012 17:11:42 +0800 [thread overview]
Message-ID: <50A4B1CE.5070203@freescale.com> (raw)
In-Reply-To: <50A4983F.8080407@bluegiga.com>
? 2012?11?15? 15:22, Lauri Hintsala ??:
> Hi,
>
> On 11/15/2012 05:20 AM, Huang Shijie wrote:
>> ? 2012?11?13? 17:42, Lauri Hintsala ??:
>>> Hi Huang,
>>>
>>> DMA support doesn't work with latest stable v3.6.5 or development
>>> 3.7-rc5 kernels. I get following error message when I open the serial
>>> port /dev/ttyAPP0:
>>>
>>> [ 48.730000] mxs-auart 8006a000.serial: step 1 error
>>> [ 48.750000] mxs-auart 8006a000.serial: We can not start up the DMA.
>>>
>> I tested this patch set in imx28-evk board Rev C with
>> linux-next-20121114.
>> it works fine.
>>
>> Maybe you can try the linux-next code.
>
> I tested linux-next-20121114 on apx4devkit (imx28 based device) and I
> got the same error message:
>
> # stty -F /dev/ttyAPP0 crtscts; microcom /dev/ttyAPP0 -s 115200
> [ 133.710000] mxs-auart 8006a000.serial: step 1 error
> [ 133.720000] mxs-auart 8006a000.serial: We can not start up the DMA.
Could you test this patch?
thanks
Huang Shijie
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next prev parent reply other threads:[~2012-11-15 9:11 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-24 10:27 [PATCH v2 0/3] serial: mxs-auart: add DMA support for auart in mx28 Huang Shijie
2012-10-24 10:27 ` [PATCH v2 1/3] serial: mxs-auart: distinguish the different SOCs Huang Shijie
2012-10-24 10:27 ` [PATCH v2 2/3] serial: mxs-auart: add the DMA support for mx28 Huang Shijie
2012-10-25 4:18 ` Vinod Koul
2012-10-25 5:50 ` Huang Shijie
2012-10-25 6:07 ` Vinod Koul
2012-10-25 9:15 ` Huang Shijie
2012-10-25 11:08 ` Vinod Koul
2012-11-05 3:16 ` Huang Shijie
2012-11-13 9:42 ` Lauri Hintsala
2012-11-15 3:20 ` Huang Shijie
2012-11-15 7:22 ` Lauri Hintsala
2012-11-15 9:11 ` Huang Shijie [this message]
2012-11-15 11:51 ` Lauri Hintsala
2012-10-24 10:27 ` [PATCH v2 3/3] ARM: dts: enable dma support for auart0 in mx28 Huang Shijie
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