ASoC: cs42l42: Allow time for HP/ADC to power-up after enable

Browse source

After enabling the HP or ADC by writing the corresponding PDN=0,
it takes around 20 milliseconds for it to power up and the midrail
supply to be stable. Add this wait into a DAPM widget callback.

If HP and ADC are both powering up in a DAPM sequence, there's no
need to do the wait twice. The widget will perform one wait in the
POST_PMU if there was a PRE_PMU for one or both.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211015133619.4698-13-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Richard Fitzgerald 2021-10-15 14:36:15 +01:00 • committed by Mark Brown

parent 3c211cb7db

commit 4ae1d8f911

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

2 changed files with 31 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

31

sound/soc/codecs/cs42l42.c

View file

2

sound/soc/codecs/cs42l42.h

View file