i.MX ProcessorsのトピックRe: error: output DMA task timeout

error: output DMA task timeout

akk1 — Mon, 11 Jan 2016 06:47:31 GMT

Dear all,

i am using imx6 ul evk.

I want to use hardware asrc on imx board to convert sampling rate of decoded bit streams into one.

The input to ASRC is pcm array.

when i execute , it shows following error and did not generate any output :

output DMA task timeout

fsl-asrc 2034000.asrc: Pair A: failed to process buffer: -62

kindly help me to resolve this issue.

Thanks.

Re: error: output DMA task timeout

igorpadykov — Tue, 12 Jan 2016 01:56:24 GMT

Hi akk

seems one will have custom application for such task, refer to

sect.30.2.1 Sequence for Memory to ASRC to Memory attached Linux Manual.

Currently implemented only Sequence for Memory to ASRC to Peripheral, as

described in sect.30.2.2

Best regards

igor

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Re: error: output DMA task timeout

phanikumar — Tue, 12 Jan 2016 15:44:20 GMT

Hi igor, do you know any sample code implementation of hardware asrc in imx6ul for two simultaneous conversions. For example, I want to convert 5 channels from sampling rates 44100 Hz to 48000 Hz. Another 5 channels for 48000 Hz to 96000 Hz. As far as I know there are atmost 10 channels with three simultaneous pair conversions are possible in imx6ul. Thanks in advance.

Re: error: output DMA task timeout

JulienP — Mon, 20 Jul 2020 13:48:26 GMT

Hi,

A few years after, have you resolved your issue ? I am running into the exact same one.

Thanks,

Julien.