in serial.c [110:121]
static int gnss_serial_parse_dt(struct serdev_device *serdev)
{
struct gnss_serial *gserial = serdev_device_get_drvdata(serdev);
struct device_node *node = serdev->dev.of_node;
u32 speed = 4800;
of_property_read_u32(node, "current-speed", &speed);
gserial->speed = speed;
return 0;
}