Messages in this thread | | | Date | Fri, 17 Aug 2012 09:17:55 -0600 | From | Stephen Warren <> | Subject | Re: [PATCH 1/5] ARM: tegra: config: enable dmaengine based APB DMA driver |
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On 08/17/2012 12:38 AM, Laxman Dewangan wrote: > On Thursday 16 August 2012 11:23 PM, Stephen Warren wrote: >> On 08/16/2012 08:13 AM, Laxman Dewangan wrote: >>> Enable config for dmaengine based Tegra APB DMA driver and >>> disable the legacy APB DMA driver (SYSTEM_DMA). >> Laxman, if I apply this series to next-20120816 (plus a few patches in >> my local work branch plus the CPU hotplug patches from Joseph, although >> I suspect none of that matters), then audio playback on Tegra20 is >> broken; the pitch is far too high. Audio playback on Tegra30 works as >> expected. > > I run the test again on ventana and did not see any issue. > I play one song and saw similar behavior with/without this series.
OK, I'll test some other boards. I tested Whistler, although all the clocking logic is identical between all Tegra20 boards.
> With this series: > -------------------- > > ubuntu@tegra-ubuntu:/home$ aplay "1-04 Hungry Like The Wolf.wav" > Playing WAVE '1-04 Hungry Like The Wolf.wav' : Signed 16 bit Little > Endian, Rate > 44100 Hz, Stereo > underrun!!! (at least 5039.388 ms long)
Why are you getting all these underruns? I almost never see this, except when something else is hammering the SD card containing the .wav file. If I saw those, I'd count it as a test failure.
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