[alsa-devel] DMA screams on MSP

Lee Jones lee.jones at linaro.org
Tue Feb 4 14:36:03 CET 2014

> 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


> (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

Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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