[PATCH 3/4] iio: proximity: vl53l0x-i2c: Fix reset sequence
From: Petr Hodina via B4 Relay
Date: Mon Jan 19 2026 - 12:20:09 EST
From: Petr Hodina <petr.hodina@xxxxxxxxxxxxxx>
Fix the reset GPIO handling and power-up timing to better match the
VL53L0X reset requirements.
Signed-off-by: Petr Hodina <petr.hodina@xxxxxxxxxxxxxx>
---
drivers/iio/proximity/vl53l0x-i2c.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/proximity/vl53l0x-i2c.c b/drivers/iio/proximity/vl53l0x-i2c.c
index 7bfab396377a..6901ce7dd835 100644
--- a/drivers/iio/proximity/vl53l0x-i2c.c
+++ b/drivers/iio/proximity/vl53l0x-i2c.c
@@ -275,9 +275,13 @@ static int vl53l0x_power_on(struct vl53l0x_data *data)
return ret;
}
- gpiod_set_value_cansleep(data->reset_gpio, 0);
-
- usleep_range(3200, 5000);
+ usleep_range(5000, 6000);
+ if (data->reset_gpio) {
+ gpiod_set_value_cansleep(data->reset_gpio, 1);
+ usleep_range(5000, 6000);
+ gpiod_set_value_cansleep(data->reset_gpio, 0);
+ usleep_range(5000, 6000);
+ }
return 0;
}
@@ -354,7 +358,7 @@ static int vl53l0x_probe(struct i2c_client *client)
return dev_err_probe(&client->dev, PTR_ERR(data->vio_supply),
"Unable to get VDDIO regulator\n");
- data->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH);
+ data->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(data->reset_gpio))
return dev_err_probe(&client->dev, PTR_ERR(data->reset_gpio),
"Cannot get reset GPIO\n");
--
2.52.0