From: Jean-Baptiste Maneyrol Date: Wed, 19 Feb 2020 14:39:52 +0000 (+0100) Subject: iio: imu: inv_mpu6050: reduce sleep time when turning regulators on X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=398da9942359efad600b9efb33e6573fedc9276d;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c index 3502b996671c..63cdde20df7e 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -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) {