From: Bo Shen <voice.shen@atmel.com>
To: Michael Lathion <m.lathion@gmail.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: WM8741 DAC with AT91SAM9G20
Date: Fri, 21 Jun 2013 18:25:24 +0800 [thread overview]
Message-ID: <51C42A14.1070907@atmel.com> (raw)
In-Reply-To: <CA+WMtaNJYNO81zKVWYYQ2SkPwd+2tvn0KEBNv879mNANTLYU9w@mail.gmail.com>
Hi Michael,
On 06/21/2013 05:40 AM, Michael Lathion wrote:
> Hi all,
>
> I'm trying to use a WM8742 dac instead of WM8731 on a custom board based on
> AT91SAM9G20EK (developpment board from Atmel for AT91SAM9G20 soc) with
> Linux Kernel 2.6.38.
>
> I have the driver working in alsa (driver compiled, mixer up in alsa, ...)
> but I can't have the ssc interface working. When trying to play sound with
> aplay I get only the masterclock and bitclock but no frame clock (LRCLK),
> see output below.
>
> What I've done is modifying the /sound/soc/atmel/sam9g20_wm8731.c file but
> it seems something is not configured as it should (probably related to
> WM8742 being slave and the WM8731 used on original dev board was master for
> clock distribution).
>
> My modified sam9g20_wm8741.c is enclosed to this mail, i suspect something
> is wrongly setup in CPU DAI configuration but can't find what.
Don't see any attachment. So, don't know how you modify the code.
However, for your reference for codec work as slave, atmel ssc as
master:
https://github.com/Android4SAM/linux-at91/commit/33db8ebd3e75632c482dda271340f4d2adcfd320
Best Regards,
Bo Shen
next prev parent reply other threads:[~2013-06-21 10:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 21:40 WM8741 DAC with AT91SAM9G20 Michael Lathion
2013-06-21 10:25 ` Bo Shen [this message]
2013-06-21 12:24 ` Fwd: " Michael Lathion
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=51C42A14.1070907@atmel.com \
--to=voice.shen@atmel.com \
--cc=alsa-devel@alsa-project.org \
--cc=m.lathion@gmail.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.