From: Dan Malek <dan@netx4.com>
To: BenH <bh40@calva.net>
Cc: paulus@linuxcare.com, linuxppc-dev@lists.linuxppc.org
Subject: Re: dmasound problems
Date: Mon, 29 Nov 1999 19:42:09 -0500 [thread overview]
Message-ID: <38431D61.4977E59B@netx4.com> (raw)
In-Reply-To: 19991130012819.012476@smtp.calvacom.fr
BenH wrote:
> I tried reproducing the complete init-cleanup-init sequence in
> dmasound_init() without luck (weird...). There must be some kind of
> timing issue out there, or I missed something. I don't know the AWACS
> chip very well so it's difficult to guess.
If these are actually a power and reset to the audio codec, there
are timing constraints. Usually, you have to power up and hold
reset at least 50 milliseconds before releasing reset (Crystal
codec specs).
This is why it may work with XMON if you set/clear bits
individually, but not work when you run the code.
-- Dan
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~1999-11-30 0:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-11-30 0:28 dmasound problems BenH
1999-11-30 0:42 ` Dan Malek [this message]
1999-11-30 15:44 ` Benjamin Herrenschmidt
1999-11-30 15:49 ` Dan Malek
1999-11-30 17:34 ` Benjamin Herrenschmidt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=38431D61.4977E59B@netx4.com \
--to=dan@netx4.com \
--cc=bh40@calva.net \
--cc=linuxppc-dev@lists.linuxppc.org \
--cc=paulus@linuxcare.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.