diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-09-11 19:31:40 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-09-21 22:08:36 +0100 |
| commit | ec96690de82cee2cb028c07b1e72cb4a446ad03a (patch) | |
| tree | a949156241816384c8f6b42edef0955d3e00cf1b /sound/soc/codecs/tlv320aic32x4.c | |
| parent | 40b37136287ba6b34aa2f1f6123f3d6d205dc2f0 (diff) | |
ASoC: tlv320aic32x4: Enable fast charge
At power-up the analog circuits may take up to one full second before
being charged with the default configuration. Using the analog blocks
before they are ready generates a *very* crappy sound.
Enable the fast charge feature, which will require a bit more power
than normal charge but will definitely speed up the starting operation
by shrinking this delay to up to 40 ms.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20200911173140.29984-4-miquel.raynal@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/tlv320aic32x4.c')
| -rw-r--r-- | sound/soc/codecs/tlv320aic32x4.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c index 2e2d8e463655..ea8cd4487536 100644 --- a/sound/soc/codecs/tlv320aic32x4.c +++ b/sound/soc/codecs/tlv320aic32x4.c @@ -1013,6 +1013,14 @@ static int aic32x4_component_probe(struct snd_soc_component *component) AIC32X4_LADC_EN | AIC32X4_RADC_EN); snd_soc_component_write(component, AIC32X4_ADCSETUP, tmp_reg); + /* + * Enable the fast charging feature and ensure the needed 40ms ellapsed + * before using the analog circuits. + */ + snd_soc_component_write(component, AIC32X4_REFPOWERUP, + AIC32X4_REFPOWERUP_40MS); + msleep(40); + return 0; } |