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SubjectRe: [PATCH AUTOSEL 5.3 087/203] ASoC: mediatek: mt6358: add delay after dmic clock on
On Sun, Sep 22, 2019 at 02:41:53PM -0400, Sasha Levin wrote:
> From: Jiaxin Yu <>
> [ Upstream commit ccb1fa21ef58a2ac15519bb878470762e967e8b3 ]
> Most dmics produce a high level when they receive clock. The difference
> between power-on and memory record time is about 10ms, but the dmic
> needs 50ms to output normal data.
> This commit add 100ms delay after SoC output clock so that we can cut
> off the pop noise at the beginning.

This might mess up a production system, please don't backport it.
In general delays to eliminate pops and clicks that are part of
the PCM statup path (as opposed to DAPM) are not safe to
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