ASoC: tas2764: Add post reset delays

[ 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@cutebit.org>
Link: https://lore.kernel.org/r/20220630075135.2221-1-povik+lin@cutebit.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/codecs/tas2764.c b/sound/soc/codecs/tas2764.c
index 9265af41c235dbcc46158e46363825c128462a24..edc66ff6dc49f51da9c413c6ac567d4482e25493 100644 (file)
--- 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);