From: Timur Tabi <timur@freescale.com>
To: lokowich <lokowich@acdstar.com>
Cc: ALSA-devel <alsa-devel@alsa-project.org>
Subject: Re: MPC5200 I2S driver for ASoC
Date: Wed, 01 Aug 2007 12:53:33 -0500 [thread overview]
Message-ID: <46B0C89D.50704@freescale.com> (raw)
In-Reply-To: <46B0C3EE.5020401@acdstar.com>
lokowich wrote:
> I'm integrating a ALSA driver for an MPC5200 into the ASoC layer,
> similar to my successful effort for a PXA255 board.
Can you provide your code? I'm working on ASoC support for another MPC SOC, so we need to
synchronize our development.
> I'm modeling the
> DMA and ALSA interfaces per ac97mgt driver found in the Lite5200B BSP,
> rather than the BestComm API example in the 2.4 kernel. The
> speaker-test with 400Hz sine wave is working, but has a slight audible
> jitter. A wav file output using aplay produces white noise.
What kind of audio samples are you trying to play? Since the MPC5200 is typically
big-endian, you probably can only play S16_BE samples instead of S16_LE samples.
--
Timur Tabi
Linux Kernel Developer @ Freescale
next prev parent reply other threads:[~2007-08-01 17:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-01 17:33 MPC5200 I2S driver for ASoC lokowich
2007-08-01 17:53 ` Timur Tabi [this message]
2007-08-01 19:16 ` lokowich
2007-08-01 19:45 ` Timur Tabi
2007-08-01 19:41 ` Jon Smirl
2007-08-01 21:03 ` lokowich
2007-08-01 21:20 ` Timur Tabi
2007-08-05 0:11 ` Jon Smirl
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