Hi Krzysztof On 23 June 2015 at 05:27, Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> wrote: > On 23.06.2015 01:00, Anand Moon wrote: >> Hi Krzysztof >> >> On 13 June 2015 at 13:45, Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx >> <mailto:k.kozlowski@xxxxxxxxxxx>> wrote: >> >> 2015-06-13 14:47 GMT+09:00 Krzysztof Kozlowski >> <k.kozlowski@xxxxxxxxxxx <mailto:k.kozlowski@xxxxxxxxxxx>>: >> > W dniu 13.06.2015 o 06:48, gabriel@xxxxxxxxx >> <mailto:gabriel@xxxxxxxxx> pisze: >> >> On 06/10/2015 10:22 AM, Krzysztof Kozlowski wrote: >> >>> >> >>> Gabriel, >> >>> >> >>> I sent a patch which should fix the issue. Could you give it a >> try? Of >> >>> course don't revert the other patches and don't use other >> workarounds. >> >>> Just apply the patch on clean (vanilla would be the best) kernel. >> >>> [RFT PATCH] dmaengine: Fix choppy sound because of unimplemented >> resume >> >>> >> >> >> >> hi krzysztof, >> >> >> >> thanks a lot for your work. having only that patch applied >> unfortunately >> >> brought back the problem after something more than one day. the sound >> >> became choppy/noisy again. I will now compile the -next kernel >> and give >> >> it a try. >> > >> > Thanks, I'll try to reproduce the issue on my Odroid. Can you >> share more >> > details how to reproduce it? The audio must play continuously or just >> > from time to time but the board must be turned on for more than >> one day? >> >> I bought some audio cables and successfully reproduced similar issue >> (choppy sound) on Odroid XU3-Lite. On current linux-next >> (next-20150612) the sound is awful (choppy) after few seconds of play. >> For example first four of: >> $ aplay /usr/share/sounds/alsa/Front_Right.wav >> work fine. But then it just gets worse and underruns are reported: >> $ Playing WAVE '/usr/share/sounds/alsa/Front_Right.wav' : Signed 16 >> bit Little Endian, Rate 48000 Hz, Mono >> $ underrun!!! (at least 0.095 ms long) >> >> Reverting the commit aee4d1fac887 ("dmaengine: pl330: improve >> pl330_tx_status() function") fixes this issue so this is not related >> to missing "resume" function. At least this particular issue on my >> Odroid is not related to missing resume but I did not try to play >> sound for 24 hours. >> My fix does not solve this. Probably "cc-stable" and "fixes" tags >> should be dropped. >> >> Anyway I'll try to investigate it more. If anyone has any ideas, >> please share. >> >> Best regards, >> Krzysztof >> -- >> To unsubscribe from this list: send the line "unsubscribe >> linux-samsung-soc" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> <mailto:majordomo@xxxxxxxxxxxxxxx> >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> >> I gave it a try by enabling following config flags. >> >> CONFIG_SND_SEQUENCER=m >> CONFIG_SND_SEQ_DUMMY=m >> CONFIG_SND_USB_AUDIO=m >> >> I am able to play mp3 songs on Odroid-XU3 boards on vlc. >> Could you give it a try. > > What do you mean? Which patch are you talking about? Are you aware that > I tried to fix this two times? > > I already tested the latest fix on Odroid XU3 - which I mentioned in > commit. However it would be nice to get confirmation for fixing original > bug report (that specific conditions on that board which Gabriel reported). > > Best regards, > Krzysztof Looks like I missed the fix. Or I overlooked it. sorry for the noise. -Anand Moon -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in
