From: Martin Povišer <povik+lin@xxxxxxxxxxx>
[ Upstream commit cd10bb89b0d57bca98eb75e0444854a1c129a14e ]
Make sure there is at least 1 ms delay from reset to first command as
is specified in the datasheet. This is a fix similar to commit
307f31452078 ("ASoC: tas2770: Insert post reset delay").
Fixes: 827ed8a0fa50 ("ASoC: tas2764: Add the driver for the TAS2764")
Signed-off-by: Martin Povišer <povik+lin@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220630075135.2221-1-povik+lin@xxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/codecs/tas2764.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/tas2764.c b/sound/soc/codecs/tas2764.c
index 14a193e48dc7..d8e79cc2cd1d 100644
--- a/sound/soc/codecs/tas2764.c
+++ b/sound/soc/codecs/tas2764.c
@@ -42,10 +42,12 @@ static void tas2764_reset(struct tas2764_priv *tas2764)
gpiod_set_value_cansleep(tas2764->reset_gpio, 0);
msleep(20);
gpiod_set_value_cansleep(tas2764->reset_gpio, 1);
+ usleep_range(1000, 2000);
}
snd_soc_component_write(tas2764->component, TAS2764_SW_RST,
TAS2764_RST);
+ usleep_range(1000, 2000);
}
static int tas2764_set_bias_level(struct snd_soc_component *component,
@@ -107,8 +109,10 @@ static int tas2764_codec_resume(struct snd_soc_component *component)
struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
int ret;
- if (tas2764->sdz_gpio)
+ if (tas2764->sdz_gpio) {
gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
+ usleep_range(1000, 2000);
+ }
ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
TAS2764_PWR_CTRL_MASK,
@@ -501,8 +505,10 @@ static int tas2764_codec_probe(struct snd_soc_component *component)
tas2764->component = component;
- if (tas2764->sdz_gpio)
+ if (tas2764->sdz_gpio) {
gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
+ usleep_range(1000, 2000);
+ }
tas2764_reset(tas2764);
--
2.35.1
