From: Jeremy Moles <jeremy@emperorlinux.com>
To: linux-embedded@vger.kernel.org
Subject: EP93XX/EDB9315A Audio Issue
Date: Tue, 26 Aug 2014 19:18:52 -0400 [thread overview]
Message-ID: <53FD15DC.3040301@emperorlinux.com> (raw)
I have what I believe to be a stock/demo EDB9315A board here, and am in
the process of upgrading a client from their 2.6.21.5 kernel to 3.15 (or
thereabouts).
So far, everything has gone fantastic, with 95% of the SoC on its
peripherals working without any issues. However, I _AM_ having an issue
with sound. At the most basic level, attempting to use sound in any way
generates the following messages:
ep93xx-dma ep93xx-dma-m2p: coherent DMA mask is unset
ep93xx-i2s ep93xx-i2s: ASoC: ep93xx-i2s hw params failed: -12
Again, as far as I know (and the client insists) this machine is a stock
EDB9315A board (part of EP93XX mach). I've spent a good deal of time
looking through some of the DMA, SPI, I2S, and ASoC code, but have had
no luck. The previous 2.6.21.5 used a single monolithic patch that
managed to enable this device, but in the newer kernel it does not work.
I know I'm not providing a great deal of information, but i wanted to
ask the lists in conjunction with my own debugging, hoping to possibly
solicit a vector of attack from someone experienced with the
architecture. :)
next reply other threads:[~2014-08-26 23:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-26 23:18 Jeremy Moles [this message]
2014-09-01 9:38 ` EP93XX/EDB9315A Audio Issue Thomas Petazzoni
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