[beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[Robert Nelson]

On Sun, Apr 24, 2016 at 4:01 PM, Robert Nelson 
wrote:

>
>
> On Sun, Apr 24, 2016 at 2:52 PM, Joe Julian  wrote:
>
>> As far as I can tell, based on
>> https://github.com/archlinuxarm/PKGBUILDs/blob/master/core/linux-am33x/PKGBUILD,
>> the Arch Linux kernel I'm using *should* have all the necessary patches
>> to make this work with 4.5.2. Unfortunately it's not. aplay -l still shows
>> no drivers.
>>
>
> That patchset doesn't include hdmi audio for the beaglebone black..
>
>
>> @RobertCNelson do you see anything wrong with that patch set that might
>> be a problem? I'd really prefer to use Arch since the package versions are
>> new enough to support some of the features I'm trying to implement.
>>
>
> Please see my previous statement, "NOTHING" has changed since then, and
> you can confirm that by looking at linux-next:
>
>
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/log/arch/arm/boot/dts/am335x-boneblack.dts
>

The last rfc was posted here:

https://www.spinics.net/lists/alsa-devel/msg48476.html

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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[beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[Robert Nelson]

On Sun, Apr 24, 2016 at 2:52 PM, Joe Julian  wrote:

> As far as I can tell, based on
> https://github.com/archlinuxarm/PKGBUILDs/blob/master/core/linux-am33x/PKGBUILD,
> the Arch Linux kernel I'm using *should* have all the necessary patches
> to make this work with 4.5.2. Unfortunately it's not. aplay -l still shows
> no drivers.
>

That patchset doesn't include hdmi audio for the beaglebone black..


> @RobertCNelson do you see anything wrong with that patch set that might be
> a problem? I'd really prefer to use Arch since the package versions are new
> enough to support some of the features I'm trying to implement.
>

Please see my previous statement, "NOTHING" has changed since then, and you
can confirm that by looking at linux-next:

https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/log/arch/arm/boot/dts/am335x-boneblack.dts

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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[beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[Joe Julian]

As far as I can tell, based 
on 
https://github.com/archlinuxarm/PKGBUILDs/blob/master/core/linux-am33x/PKGBUILD,
 
the Arch Linux kernel I'm using *should* have all the necessary patches to 
make this work with 4.5.2. Unfortunately it's not. aplay -l still shows no 
drivers.

@RobertCNelson do you see anything wrong with that patch set that might be 
a problem? I'd really prefer to use Arch since the package versions are new 
enough to support some of the features I'm trying to implement.

I do, of course, have the correct resolution and I confirmed the edid does 
have the audio block.

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[Joe Julian]

On Tuesday, March 22, 2016 at 9:35:54 AM UTC-7, RobertCNelson wrote:
>
> On Tue, Mar 22, 2016 at 11:31 AM,   
> wrote: 
>
> HDMI audio is in patch hell on mainline, if you want to use "4.1.x" 
> with hdmi audio you need to use the ti branch: 
>
>
>
Do you  have a reference?

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

Launching alsaplayer, *wav *and *mp3 *files can be played, but no sound is 
reproduced.

It seems as the BeagleBone's drivers are not pointing to right audio 
interface.
*How can I checked if the SoC's audio codec and the HDMI's interface are 
configured and working fine?*

By the moment, I can't find a solution for the issue. I would be glad if 
someone could help me with it.

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

Going forward in my test:


- Current kernel: *4.1.18-ti-r56*

- *aplay -L*:

null

 Discard all samples (playback) or generate zero samples (capture)

 default:CARD=Black

TI BeagleBone Black,

Default Audio Device

sysdefault:CARD=Black

TI BeagleBone Black,

Default Audio Device 

 

- speaker-test -D CARD=Black -t song.wav -c 2 -s 1

speaker-test 1.0.25


Playback device is CARD=Black

Stream parameters are 48000Hz, S16_LE, 2 channels

ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM CARD=Black

Playback open error: -2,No such file or directory7


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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

*Any hint/tip?*

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

Kernel is updated to TI's branch: "*4.1.15-ti-r40*".

Now, VLC player does not show any error message and plays the sound sample, 
but no sound is reproduced.
I have checked the basics, volume, mute option and similar. These are not 
the failures.

*Which could the missing part for making the sound audible? Maybe codecs?*

Testing the sound configuration, next instructions are launched:

*ls /dev/snd*

ls /proc/asound

cat /proc/asound/cards
cat /proc(asound/devices
aplay -l
cat /proc/asound/card0/pcm0p/sub0/hw_params 


With output:

*Black  card0  cards  devices  oss  pcm  seq  timers  version*
* 0 [Black  ]: TI_BeagleBone_B - TI BeagleBone Black*
*  TI BeagleBone Black*
*  2: [ 0]   : control*
*  3: [ 0- 0]: digital audio playback*
*  4: [ 0- 0]: digital audio capture*
* 33:: timer*
* List of PLAYBACK Hardware Devices *
*card 0: Black [TI BeagleBone Black], device 0: HDMI hdmi-hifi-0 []*
*  Subdevices: 0/1*
*  Subdevice #0: subdevice #0*
*access: MMAP_INTERLEAVED*
*format: S32_LE*
*subformat: STD*
*channels: 2*
*rate: 32000 (32000/1)*
*period_size: 1024*
*buffer_size: 16384*


But there is no sound.

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

Kernel is updated to TI's branch: "*4.1.15-ti-r40*".

Now, VLC player does not show any error message and plays the sound sample, 
but no sound is reproduced.
I have checked the basics, volume, mute option and similar. These are not 
the failures.

Which could the missing part for making the sound audible? Maybe codecs?

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

Thanks Robert!
I have an issue with ntp update at boot. I have solved it temporary.

Well, I have just tried to launch the '*update_kernel*' script:

cd /opt/scripts/tools/ 
git pull 
sudo ./update_kernel.sh --ti-channel --lts-4_1 


But it fails due to there is not space left on device. 

cp: failed to extend '/boot/uboot/initrd.img': No space left on device


Checking device with '*df -h*', output is:

/dev/mmcblk0p1 96M 96M 100% /boot/uboot


Is there any option to extend this partition? Or maybe, can I remove some 
file from "*/boot/uboot*" without blocking the system? 
If '*_bak' folders are removed the result is the same, no space left 
neither, and at reboot, BBB is bricked.




El martes, 29 de marzo de 2016, 18:07:44 (UTC+2), RobertCNelson escribió:
>
> On Tue, Mar 29, 2016 at 4:53 AM,   wrote: 
> > Moreover, if I follow next steps: 
> > 
> > cd /opt/scripts/tools/ 
> > git pull 
> > sudo ./update_kernel.sh --ti-channel --lts-4_1 
> > 
> > 
> > I get this message: 
> > 
> > ERROR: The certificate of 'rcn-ee.com' is not trusted. 
> > 
> > The certificate has not yet been activated. 
>
> Update your bbb's clock: 
>
> we use "Let's Encrypt Authority X1" certificate, which has a narrow 
> time window: "3/16/16" -> "6/14/16".. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> https://rcn-ee.com/ 
>

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

Moreover, if I follow next steps:

cd /opt/scripts/tools/ 
git pull 
sudo ./update_kernel.sh --ti-channel --lts-4_1 


I get this message:

ERROR: The certificate of 'rcn-ee.com' is not trusted.

The certificate has not yet been activated. 

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

I have checked that the current resolution from BeagleBone's HDMI is: 
*1280x720@60e* (*/boot/uboot/uEnv.txt*)

I'm working with "4.1.x" kernel modified to support all multitouch screens. 
So, if I update the kernel from ti branch, I suspect I lose the kernel's 
modifications to support the multitouch screens I'm working with. Is this 
right?

Is there any other way to support audio at this kernel? Maybe, if I replace 
the kernel for a newer one (ie. "4.5.x")?

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Re: [beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[Robert Nelson]

On Tue, Mar 22, 2016 at 11:31 AM,   wrote:
> Adding new information about the issue:
> filename: /lib/modules/4.1.16-bone18/kernel/sound/core/snd.kp
>


HDMI audio is in patch hell on mainline, if you want to use "4.1.x"
with hdmi audio you need to use the ti branch:

cd /opt/scripts/tools/
git pull
sudo ./update_kernel.sh --ti-channel --lts-4_1

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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[beagleboard] Re: Play audio throuhg HDMI on BeagleBone Black

[yolcopc]

Adding new information about the issue:


'lsmod':

snd 56846   6   snd_soc_core, snd_timer, snd_pcm, snd_seq, 
snd_seq_device, snd_comp

 

'modinfo snd':

filename: /lib/modules/4.1.16-bone18/kernel/sound/core/snd.kp

alias:   char-major-116-*

license:   GPL

description: Advanced Linux Sound Architecture driver for soundcards.

author:Jaroslav Kysela 

license:   GPL

description: Jack detection support for ALSA

author:Mark Brown 

depends: soundcore

intree:  Y

vermagic: 4.1.16-bone18 mod_unload modversions ARMv7 thumb2 p2v8

parm:   slots:Module names assigned to the slots. (array of 
charp)

parm:   major:Major # for sound driver. (int)

parm:   cards_limit:Count of auto-loadable soundcards. (int)



 

El martes, 22 de marzo de 2016, 16:44:53 (UTC+1), yol...@gmail.com escribió:
>
> After work with a multitouch screen for the BeagleBone Black, now I just 
> want to play audio/sounds through the HDMI connection as the multitouch 
> screen has a speaker. 
>
>
> First of all, I just copied an audio sample, and try to reproduce it by 
> 'vlc', but next message is shown:
>
>  "*Audio output failed. The audio device "default" could not be used. 
> No such file or directory*." 
>
>
> Then, I have installed next tools:
>
>  'alsa-base', 'alsa-utils', 'alsa-tools', 'alsamixergui'
>
>
> But, when I tried to launch 'alsamixergui', the next message is shown:
>
>  "*alsamixer: function snd_ctl_open failed for default: No such file 
> or directory*" 
>
>
> And at "/etc/modprobe.d/alsa-base.conf", the content is:
>
> * # autoloader aliases*
>
> *   install sound-slot-0 /sbin/modprobe snd-card-0*
>
> *   install sound-slot-1 /sbin/modprobe snd-card-1*
>
> *   install sound-slot-2 /sbin/modprobe snd-card-2*
>
> *   install sound-slot-3 /sbin/modprobe snd-card-3*
>
> *   install sound-slot-4 /sbin/modprobe snd-card-4*
>
> *   install sound-slot-5 /sbin/modprobe snd-card-5*
>
> *   install sound-slot-6 /sbin/modprobe snd-card-6*
>
> *   install sound-slot-7 /sbin/modprobe snd-card-7*
>
> * # Cause optional modules to be loaded above generic modules*
>
> *   install snd /sbin/modprobe --ignore-install snd && { 
> /sbin/modprobe --quiet snd-ioctl32 ; /sbin/modprobe --quiet snd-seq ; : ; }*
>
> *   install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi && 
> { /sbin/modprobe --quiet snd-seq-midi ; : ; }*
>
> *   install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && 
> { /sbin/modprobe --quiet snd-emu10k1-synth ; : ; }*
>
> * # Keep snd-pcsp from beeing loaded as first soundcard*
>
> *   options snd-pcsp index=-2*
>
> * # Keep snd-usb-audio from beeing loaded as first soundcard*
>
> *   options snd-usb-audio index=-2*
>
> * # Prevent abnormal drivers from grabbing index 0*
>
> *   options bt87x index=-2*
>
> *   options cx88_alsa index=-2*
>
> *   options snd-atiixp-modem index=-2*
>
> *   options snd-intel8x0m index=-2*
>
> *   options snd-via82xx-modem index=-2*
>
>
> Moreover, I have try with next commands:
>
>  'alsamixer -c 1 (2, 3... 7)' 
>
> Having next output:
>
>  "*invalid card index: 1*"
>
>
> *Is there any way to reproduce any sound (*.midi, *.wav, *.mp3...) through 
> hdmi easily*?
>

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