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ASoC: max98390: Add reset gpio control

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Add reset gpio control to support RESET PIN connected to gpio.

Signed-off-by: Steve Lee <steve.lee.analog@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220420044900.2989-1-steve.lee.analog@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Steve Lee 2022-04-20 13:48:59 +09:00 committed by Mark Brown
parent b3598fe6d0
commit 397ff02496
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 12 additions and 0 deletions
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12
sound/soc/codecs/max98390.c
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@ -1021,6 +1021,7 @@ static int max98390_i2c_probe(struct i2c_client *i2c)
struct max98390_priv *max98390 = NULL;
struct i2c_adapter *adapter = i2c->adapter;
struct gpio_desc *reset_gpio;
ret = i2c_check_functionality(adapter,
I2C_FUNC_SMBUS_BYTE
@ -1072,6 +1073,17 @@ static int max98390_i2c_probe(struct i2c_client *i2c)
return ret;
}
reset_gpio = devm_gpiod_get_optional(&i2c->dev,
"reset", GPIOD_OUT_HIGH);
/* Power on device */
if (reset_gpio) {
usleep_range(1000, 2000);
/* bring out of reset */
gpiod_set_value_cansleep(reset_gpio, 0);
usleep_range(1000, 2000);
}
/* Check Revision ID */
ret = regmap_read(max98390->regmap,
MAX98390_R24FF_REV_ID, &reg);