diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 3d5fe53988e5..62d1e4607912 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -2170,7 +2170,7 @@ static int lpuart_probe(struct platform_device *pdev)
 		return PTR_ERR(sport->port.membase);
 
 	sport->port.membase += sdata->reg_off;
-	sport->port.mapbase = res->start;
+	sport->port.mapbase = res->start + sdata->reg_off;
 	sport->port.dev = &pdev->dev;
 	sport->port.type = PORT_LPUART;
 	ret = platform_get_irq(pdev, 0);