Re: [Gumstix-users] Audiostix 2 support package requirements?

[Justin F. <jus...@ho...>]

First, sorry for the double post last time.

I have solved my initial problem...the necessary drivers are built into the
kernel, I just needed to use "pxa2xx" without substituting "55" for "xx".
Also, I did a buildroot with bplay and aumix and have been able to execute
all the commands documented in the FAQ.

However, my output has a lot of noise in it.  The largest component is at
300 kHz which I have identified as power supply noise (I'm using one of the
Goodpower wall warts that Gumstix sells).  The noise is not there initially,
but shows up when I modprobe the drivers.  It's about 1 Vpp.

I'm going to use a beefy benchtop supply tomorrow and see how much current
my setup is drawing (I'm using a connex 400xm, tweener, and audiostix 2).
My guess is that if I allow enough current in I'll fry whatever miscreant is
overloading the supply.  

Anyone else see this?

Justin

-----Original Message-----
From: Justin Ford [mailto:jus...@ho...] 
Sent: Monday, January 15, 2007 10:49 AM
To: gum...@li...
Subject: Re: [Gumstix-users] Audiostix 2 support package requirements?

Here's some additional information:

   Contents of /sys/module/:
       af_packet          gumstix_gadget     pcmcia_core        smc91x
       cfio               gumstix_smc91x     proc_gpio          tcp_bic
       firmware_class     mcf25              pxa2xx_core        unix
       g_ether            mii                pxa2xx_cs
       gumstix_bluetooth  pcmcia             pxa2xx_udc

There's no pxa_ac97 or snd_*.  So, I'm assuming that I am missing some 
buildroot packages.  Any hints about what I need?

Justin

-----Original Message-----
From: Justin Ford <justin_ford <at> hotmail.com>
Subject: Audiostix 2 support package requirements?
Newsgroups: gmane.linux.distributions.gumstix.general
Date: 2007-01-11 22:24:29 GMT (3 days, 18 hours and 31 minutes ago)

I'm trying to get off the ground with an audiostix 2 on a connex 400xm.  It
shipped with buildroot 1078.  I read the FAQ

(http://docwiki.gumstix.org/Frequently_asked_questions/GPSstix_and_Audiostix
2#What_is_loaded_with_modprobe.3F)
and attempted the following:
   # modprobe snd-pxa-255-ac97
   FATAL: Module snd_pxa255_ac97 not found.
   # modprobe pxa-ac97
   FATAL: Module snd_pxa255_ac97 not found.

So it seems that the default buildroot does not support the audiostix.  I've
looked around on the Wiki and searched through the mail list but haven't
come across which packages are required.  Other people seem to be using the
board just fine so I'm sure the information is right in front of
me...but...could someone point me in the right direction?

Thanks!
Justin

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