From: "stéphane cerveau" <scerveau@gmail.com>
To: Fabio Estevam <festevam@gmail.com>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>
Subject: Re: IMX WM8740 I2S support
Date: Wed, 25 Sep 2013 15:54:54 +0200 [thread overview]
Message-ID: <5242EB2E.4010107@gmail.com> (raw)
In-Reply-To: <CAOMZO5DL6R8TR0=mH4kYVuJQcWo6vBPWVDSP21NMMpgrtfTXeg@mail.gmail.com>
Thx for your answer.
I checked in the folder linux/firmware/imx/sdma/ and there is these files:
1928 Sep 19 11:13 sdma-imx25-to1.bin.ihex
10340 Sep 19 11:13 sdma-imx31-to1.bin.ihex
10368 Sep 19 11:13 sdma-imx31-to2.bin.ihex
5544 Sep 19 11:13 sdma-imx35-to1.bin.ihex
4824 Sep 19 11:13 sdma-imx35-to2.bin.ihex
1532 Sep 19 11:13 sdma-imx50-to1.bin.ihex
2248 Sep 19 11:13 sdma-imx51-to3.bin.ihex
3880 Sep 19 11:13 sdma-imx53-to1.bin.ihex
1838 Sep 19 11:17 sdma-imx6q-to1.bin
2868 Sep 19 11:17 sdma-imx6q-to1.bin.gen.o
1482 Sep 19 11:17 .sdma-imx6q-to1.bin.gen.o.cmd
510 Sep 19 11:17 sdma-imx6q-to1.bin.gen.S
5068 Sep 19 11:13 sdma-imx6q-to1.bin.ihex
As you can see the sdma-imx6q-to1.bin.gen.o is correctly built.
How can i check that the firmware is correctly loaded? What is the
purpose of this firmware seen that wm8962 is working fine in
SND_SOC_DAIFMT_DSP_B.
My point is using AUD_MUX4 with I2S protocol.
Best regards.
Stephane
On 09/25/2013 03:12 PM, Fabio Estevam wrote:
> On Wed, Sep 25, 2013 at 10:08 AM, stéphane cerveau <scerveau@gmail.com> wrote:
>> Dear all,
>>
>> I'm currently working on supporting WM8740 device software configured with
>> imx6q system.
>> For now my driver seems to be configured correctly. The playback is launched
>> but i get:
>> ALSA sound/core/pcm_lib.c:1822 playback write error (DMA or IRQ trouble?
>> write error: Input/output error
> This may indicate that you are missing the SDMA firmware for the mx6.
> (linux/firmware/sdma/sdma-imx6q.bin)
>
> Starting on 3.12-rc1 you don't need the SDMA firmware for audio
> playback anymore.
>
> So I would suggest one of the above methods.
>
> Regards,
>
> Fabio Estevam
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next prev parent reply other threads:[~2013-09-25 13:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-25 13:08 IMX WM8740 I2S support stéphane cerveau
2013-09-25 13:12 ` Fabio Estevam
2013-09-25 13:54 ` stéphane cerveau [this message]
2013-09-25 13:56 ` stéphane cerveau
2013-09-25 16:37 ` Fabio Estevam
2013-09-25 16:42 ` stéphane cerveau
2013-09-25 16:53 ` Fabio Estevam
2013-09-25 16:58 ` stéphane cerveau
2013-09-25 17:02 ` Fabio Estevam
[not found] ` <524317D4.7020701@gmail.com>
2013-09-25 17:07 ` Fabio Estevam
2013-09-25 17:09 ` stéphane cerveau
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