There are no known problems with current power-up sequence which first sets
the /shutdown pin high and then enables the supply. However, swap the order
so that the device is kept in shutdown/reset mode during the supply voltage
transition since slowly rising voltages can usually cause problems if the
device is not kept in reset.
Signed-off-by: Jarkko Nikula <jhnikula@xxxxxxxxx>
Cc: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxx>
---
sound/soc/codecs/tpa6130a2.c | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
index f9a92ea..9b98107 100644
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -126,16 +126,15 @@ static int tpa6130a2_power(int power)
mutex_lock(&data->mutex);
if (power && !data->power_state) {
- /* Power on */
- if (data->power_gpio >= 0)
- gpio_set_value(data->power_gpio, 1);
-
ret = regulator_enable(data->supply);
if (ret != 0) {
dev_err(&tpa6130a2_client->dev,
"Failed to enable supply: %d\n", ret);
goto exit;
}
+ /* Power on */
+ if (data->power_gpio >= 0)
+ gpio_set_value(data->power_gpio, 1);
data->power_state = 1;
ret = tpa6130a2_initialize();
--
1.7.2.3
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