[alsa-devel] wm8960 sleep time is too long when system suspend

Mark Brown broonie at kernel.org
Mon Nov 2 12:16:26 CET 2015


On Mon, Nov 02, 2015 at 06:49:23PM +0800, Zidan Wang wrote:

> Some customer can't accept such long system suspend time. It's better
> to spend less than 100ms for system suspend.  Codec suspend is a part
> of system suspend, so it should be less than 100ms, and as short as
> possible.

Users need to be realistic about the performance they can expect with
older devices.  Systems that need fast power on/off times should be
using ground referenced CODECs, fundamentally ramping VMID quickly is
incompatible with avoiding pops and clicks.
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