VL53L0X can be configured to use interrupt pin (GPIO1) to notify host about readiness of new measurement. If interrupt pin is not specified, driver still uses polling. Signed-off-by: Ivan Drobyshevskyi <drobyshevskyi@gmail.com> Link: https://lore.kernel.org/r/20200916074458.873359-2-drobyshevskyi@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>