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[Problem] In some USB DACs, a terrible pop noise comes to be heard at the start of DSD playback (in the following situations). - play first DSD track - change from PCM track to DSD track - change from DSD64 track to DSD128 track (and etc...) - seek DSD track - Fast-Forward/Rewind DSD track [Cause] At the start of playback, there is a little silence. The silence bit pattern "0x69" is required on DSD mode, but it is not like that. [Solution] This patch adds DSD silence pattern to the endpoint settings. Change-Id: I173538b84978d4136eb0dca31f12738814375604 Signed-off-by: Nobutaka Okabe <nob77413@gmail.com> Signed-off-by: Dongjin Kim <tobetter@gmail.com>