diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
index 765c0210cb52..191fdb87c424 100644
--- a/drivers/mfd/syscon.c
+++ b/drivers/mfd/syscon.c
@@ -60,7 +60,7 @@ static struct syscon *of_syscon_register(struct device_node *np, bool check_clk)
 		goto err_map;
 	}
 
-	base = ioremap(res.start, resource_size(&res));
+	base = of_iomap(np, 0);
 	if (!base) {
 		ret = -ENOMEM;
 		goto err_map;