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no sound on Meegopad T02 with 4.3 kernel

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  no sound on Meegopad T02 with 4.3 kernel Jamin Collins <jamin.collins@gmail.com> - 2015-11-13 01:40 +0100
    Re: no sound on Meegopad T02 with 4.3 kernel Alexey Mednyy <swexru@gmail.com> - 2015-11-16 16:20 +0100

#1268514 — no sound on Meegopad T02 with 4.3 kernel

I'm having trouble getting sound working on a Meegopad T02[1]. I'm
running Arch with a 4.3 kernel[2] with patches[3] for wifi stability.

So far, the drivers appear to load, but produce the following dmesg output:

> [    5.579629] baytrail-pcm-audio baytrail-pcm-audio: ipc: error DSP boot timeout
> [    5.579841] byt-rt5640 byt-rt5640: ASoC: CPU DAI baytrail-pcm-audio not registered

No devices are listed in the output from 'aplay -l' (presumably due to
the above):

> $ aplay -l
> aplay: device_list:268: no soundcards found...

I've tried alternative firmware[4], but still get output like the above.

The system is a Baytrail compute stick (similar to Intel's Compute
Stick) and supports both HDMI audio and analog jack.

There appears to be a patch from Intel[5], but it's monolithic and
targetted toward a much older kernel.  It's also a bit unclear if any
of the patches were ever upstreamed.

Am I doing something obviously wrong here? If not, are there any
patches I can try to get this thing working?


[1] - http://x86pad.com/t02.html
[2] - http://git.uplinklabs.net/snoonan/projects/archlinux/ec2/ec2-packages.git/plain/linux-ec2/config.x86_64?id=0ca66a09e18e7294c9cf9a6df5b79247781e0c12
[3] - http://git.uplinklabs.net/snoonan/projects/archlinux/ec2/ec2-packages.git/commit/?id=0ca66a09e18e7294c9cf9a6df5b79247781e0c12
[4] - https://git.kernel.org/cgit/linux/kernel/git/vkoul/firmware.git/tree/intel
[5] - https://github.com/01org/baytrailaudio/blob/master/hdmi_audio_20150319.patch
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#1270276

I'm also interesting in baytrail sound solution. I've heard that Asus
T100A sound is working.
However I still can't stable kernel. Even with patches from [3] link
my Asus m80ta just hangs without any dmesg.
_________________________________
Best regards, Mednyy Alexey.


On Fri, Nov 13, 2015 at 3:32 AM, Jamin Collins <jamin.collins@gmail.com> wrote:
> I'm having trouble getting sound working on a Meegopad T02[1]. I'm
> running Arch with a 4.3 kernel[2] with patches[3] for wifi stability.
>
> So far, the drivers appear to load, but produce the following dmesg output:
>
>> [    5.579629] baytrail-pcm-audio baytrail-pcm-audio: ipc: error DSP boot timeout
>> [    5.579841] byt-rt5640 byt-rt5640: ASoC: CPU DAI baytrail-pcm-audio not registered
>
> No devices are listed in the output from 'aplay -l' (presumably due to
> the above):
>
>> $ aplay -l
>> aplay: device_list:268: no soundcards found...
>
> I've tried alternative firmware[4], but still get output like the above.
>
> The system is a Baytrail compute stick (similar to Intel's Compute
> Stick) and supports both HDMI audio and analog jack.
>
> There appears to be a patch from Intel[5], but it's monolithic and
> targetted toward a much older kernel.  It's also a bit unclear if any
> of the patches were ever upstreamed.
>
> Am I doing something obviously wrong here? If not, are there any
> patches I can try to get this thing working?
>
>
> [1] - http://x86pad.com/t02.html
> [2] - http://git.uplinklabs.net/snoonan/projects/archlinux/ec2/ec2-packages.git/plain/linux-ec2/config.x86_64?id=0ca66a09e18e7294c9cf9a6df5b79247781e0c12
> [3] - http://git.uplinklabs.net/snoonan/projects/archlinux/ec2/ec2-packages.git/commit/?id=0ca66a09e18e7294c9cf9a6df5b79247781e0c12
> [4] - https://git.kernel.org/cgit/linux/kernel/git/vkoul/firmware.git/tree/intel
> [5] - https://github.com/01org/baytrailaudio/blob/master/hdmi_audio_20150319.patch
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
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To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
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