From: Bo Shen <voice.shen@atmel.com>
To: Richard Genoud <richard.genoud@gmail.com>
Cc: devicetree-discuss@lists.ozlabs.org,
"Nicolas Ferre" <nicolas.ferre@atmel.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Subject: Re: [RFC PATCH 01/13] misc: atmel_ssc: add device tree DMA support
Date: Thu, 4 Jul 2013 09:15:00 +0800 [thread overview]
Message-ID: <51D4CC94.3020908@atmel.com> (raw)
In-Reply-To: <CACQ1gAgPaRm3gxxJNgfj9bR565Q0+SNY3+EcjA_mrh1N+yPzSA@mail.gmail.com>
Hi Richard,
On 7/3/2013 23:51, Richard Genoud wrote:
>> >but there's a violent hang (kernel stops, no trace) when I try the record :
>> >arecord -v -V stereo -Dplug:default -f cd -t wav -c 2 /tmp/toto.wav
>> >last thing I see is :
>> >dma dma0chan3: atc_control (3)
I don't meet this issue. Playback and recording works well on my side on
at91sam9g35ek board.
>> >I'll try to trace that.
> I think it's DMA related.
> the last thing done by the kernel is:
> i2c i2c-0: i2c_outb: 0x34 A
> i2c i2c-0: i2c_outb: 0x0c A
> i2c i2c-0: i2c_outb: 0x5a A
> meaning: enable power on, LINE IN, ADC, OSC, on the WM8731
> so, after that, data is comming from the codec to the SSC and then is
> handled by the DMA.
> there must be something nasty on the DMA bus to hang everything like that...
Will you try i2c without DMA support to test this issue?
> Richard.
Best Regards,
Bo Shen
next prev parent reply other threads:[~2013-07-04 1:15 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-01 8:39 [RFC PATCH 00/13] audio support for at91sam9x5ek board Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 01/13] misc: atmel_ssc: add device tree DMA support Richard Genoud
2013-07-02 3:01 ` Bo Shen
2013-07-02 8:13 ` Richard Genoud
2013-07-02 9:11 ` Bo Shen
2013-07-03 12:21 ` Richard Genoud
2013-07-03 15:51 ` Richard Genoud
2013-07-04 1:15 ` Bo Shen [this message]
[not found] ` <51D4CC94.3020908-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2013-07-04 13:44 ` Richard Genoud
2013-07-05 1:25 ` Bo Shen
2013-07-05 7:16 ` Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 03/13] ARM: at91: DTS: sam9x5: add clock for SSC DT entry Richard Genoud
2013-07-02 3:05 ` Bo Shen
2013-07-05 15:16 ` Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 05/13] ARM: AT91: DTS: sam9x5ek: add WM8731 codec Richard Genoud
[not found] ` <1372667978-4718-1-git-send-email-richard.genoud-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2013-07-01 8:39 ` [RFC PATCH 02/13] misc: atmel_ssc: keep the count of pdev->id Richard Genoud
2013-07-02 3:03 ` Bo Shen
2013-07-05 15:16 ` Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 04/13] ARM: at91: DTS: sam9x5: add SSC DMA parameters Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 06/13] ARM: AT91: DTS: sam9x5ek: add sound configuration Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 07/13] ARM: AT91: DTS: sam9x5ek: enable SSC Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 08/13] sound: sam9x5_wm8731: machine driver for at91sam9x5 wm8731 boards Richard Genoud
2013-07-02 3:21 ` Bo Shen
2013-07-05 15:15 ` Richard Genoud
[not found] ` <CACQ1gAji8KkjXee8o=9jt8O38611LBJ95yXimxbfn1qLaLOcnA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-05 18:06 ` Mark Brown
2013-07-05 18:12 ` Richard Genoud
2013-07-08 2:01 ` Bo Shen
2013-07-08 7:55 ` Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 09/13] sound: atmel-pcm: don't return ok if pcm-dma is not implemented Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 10/13] sound: atmel_ssc_dai: PM: actually stopping clock on suspend/resume Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 11/13] sound: atmel-pcm-dma: check pointer before dereference Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 12/13] sound: wm8731: rework power management Richard Genoud
2013-07-01 8:39 ` [RFC PATCH 13/13] sound: codec: wm8371: correct capture line/mic Richard Genoud
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