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iio: imu: inv_mpu6050: reduce sleep time when turning regulators on 

Turning vdd regulator on requires a consequent sleep for the
chip to power on correctly.
Turning vddio regulator is much faster.

Signed-off-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jean-Baptiste Maneyrol 2020-02-19 15:39:52 +01:00 committed by Jonathan Cameron
parent c1bfe9c818
commit 398da99423
1 changed files with 2 additions and 1 deletions
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3
drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
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@ -1201,7 +1201,7 @@ static int inv_mpu_core_enable_regulator_vddio(struct inv_mpu6050_state *st)
"Failed to enable vddio regulator: %d\n", result);
} else {
/* Give the device a little bit of time to start up. */
usleep_range(35000, 70000);
usleep_range(3000, 5000);
}
return result;
@ -1321,6 +1321,7 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
dev_err(dev, "Failed to enable vdd regulator: %d\n", result);
return result;
}
msleep(INV_MPU6050_POWER_UP_TIME);
result = inv_mpu_core_enable_regulator_vddio(st);
if (result) {