Hi Takashi, On 18/06/2020 15:40, Takashi Iwai wrote: > In the end we already enabled the sync-write mode for most of HD-audio > controllers including Intel, and it's no big merit to keep the async > write mode for the rest. Let's make it as default and drop the > superfluous AZX_DCAPS_SYNC_WRITE bit flag. > > Also, avoid to set the allow_bus_reset flag, which is a quite unstable > and hackish behavior that was needed only for some early platforms > (decades ago). The straight fallback to the single cmd mode is more > robust. > > Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> I have noticed a regression in HDA playback on our Tegra186 Jetson TX2 platform. Bisect is pointing to this patch and reverting this does appear to fix it. Interestingly, I am not seeing any problems on other Tegra platforms, however, Tegra186 does have the IOMMU enabled for HDA which is one different between the other platforms. We can take a closer look at this for Tegra, but I am wondering if we revert this for Tegra for now. Cheers Jon -- nvpublic
