From: Lee Jones <lee.jones@linaro.org>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
Mark Brown <broonie@kernel.org>
Subject: Re: DMA screams on MSP
Date: Tue, 4 Feb 2014 20:38:57 +0000 [thread overview]
Message-ID: <20140204203857.GB5196@lee--X1> (raw)
In-Reply-To: <CACRpkdaT+r4aCZ-4WsxThVW0zfKemL=0Gu2_6+paQS=Cf1Nh7g@mail.gmail.com>
> >> I get this in my bootlog nowadays (v3.14-rc1):
> >>
> >> [ 2.713897] dma dma0chan29: [d40_validate_conf] Invalid device type
> >> (14) physical channel exeeds available physical channels
> >
> > <snip>
> >
> >> (I patched dma40 to state the exact cause instead of just
> >> "invalid device type".)
> >>
> >> Like something (I guess ALSA SoC?) is trying real hard to get physical
> >> channel 14, but I can't seem to figure out what is going on.
> >>
> >> I will try to see if this also appears on the Snowball but I guess
> >> so?
> >>
> >> Any hints appreciated...
> >
> > It looks like you're attempting to initialise MSP2 (HDMI). Why are you
> > doing that? Can you `git grep msp2` and provide me with the output
> > please?
>
> This is just plain mainline, there is nothing special about my
> git tree...
>
> Yeah it appears I went in and marked msp2 "okay" in
> commit 70b41abc151f9 so that is causing it, I'll make a
> quick fix to get rid of that.
>
> But no matter whether it gets activated or not: should it not just
> work anyway? This message seems to suggest the DMA
> channel assignment is invalid.
I haven't tested/debugged any of the physical channels, so I don't
know what could be the particular issue. It should work in theroy, I
can't think what might have changed. The channel is the same, as are
the markers to use fixed physical channel. Do you have a copy of the
old Igloo or the internal ST-E Kernel? I'm pretty sure HDMI sound
worked in those.
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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prev parent reply other threads:[~2014-02-04 20:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-04 11:56 DMA screams on MSP Linus Walleij
2014-02-04 13:36 ` Lee Jones
2014-02-04 20:01 ` Linus Walleij
2014-02-04 20:38 ` Lee Jones [this message]
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