[alsa-devel] Fwd: Issue on Linux 4.12-rc7 on iMX6 based board

gianluca gianlucarenzi at eurekelettronica.it
Thu Jun 29 18:28:06 CEST 2017


On 06/29/2017 04:30 PM, Fabio Estevam wrote:
> On Thu, Jun 29, 2017 at 11:24 AM, gianluca
> <gianlucarenzi at eurekelettronica.it> wrote:
>
>> So, are they good?
>
> If your hardware really uses these pins, then yes :-)
>

Now looking at other boards where our hardware-guy took the inspiration 
(i.e. iMX6 Rex from Fedevel) the device-tree is the same as mine.

> MX6QDL_PAD_GPIO_0__CCM_CLKO1		0x030b0

0x130b0 or 0x030b0 the only difference is the PAD_CTL_HYS 
      (1 << 16)

Maybe more strong to noise, but basically they are the same.

But I found an issue when playing data from aplay without specifing the 
device or specifying one:

> # aplay /usr/share/sounds/alsa/Front_Center.wav
> Playing WAVE 'Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono

or

> # aplay -D hw:0,0 /usr/share/sounds/alsa/Front_Right.wav
> Playing WAVE 'Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
> aplay: set_params:1233: Sample format non available
> Available formats:
> - S24_LE

Maybe some ALSA misconfigured????

This distro is a bootstrapped jessie Debian 8, so some configuration 
could be missing or not-so-good-configured.

>
> # aplay -L
> null
>     Discard all samples (playback) or generate zero samples (capture)
> pulse
>     PulseAudio Sound Server
> default:CARD=imx6ek360sgtl50
>     imx6-ek360-sgtl5000,
>     Default Audio Device
> sysdefault:CARD=imx6ek360sgtl50
>     imx6-ek360-sgtl5000,
>     Default Audio Device
> dmix:CARD=imx6ek360sgtl50,DEV=0
>     imx6-ek360-sgtl5000,
>     Direct sample mixing device
> dsnoop:CARD=imx6ek360sgtl50,DEV=0
>     imx6-ek360-sgtl5000,
>     Direct sample snooping device
> hw:CARD=imx6ek360sgtl50,DEV=0
>     imx6-ek360-sgtl5000,
>     Direct hardware device without any conversions
> plughw:CARD=imx6ek360sgtl50,DEV=0
>     imx6-ek360-sgtl5000,
>     Hardware device with all software conversions

Anybody has never faced an issue like this?

Regards,
-- 
Eurek s.r.l.                          |
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