diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
index ffdccab..ac3a06c 100644
--- a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
@@ -8,13 +8,12 @@
 #include <mapmem.h>
 #include <linux/io.h>
 #include <linux/err.h>
+#include <linux/sizes.h>
 #include <dm/device.h>
 #include <dm/pinctrl.h>
 
 #include "pinctrl-uniphier.h"
 
-DECLARE_GLOBAL_DATA_PTR;
-
 static int uniphier_pinctrl_get_groups_count(struct udevice *dev)
 {
 	struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
@@ -128,14 +127,12 @@ int uniphier_pinctrl_probe(struct udevice *dev,
 {
 	struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
 	fdt_addr_t addr;
-	fdt_size_t size;
 
-	addr = fdtdec_get_addr_size(gd->fdt_blob, dev->of_offset, "reg",
-				    &size);
+	addr = dev_get_addr(dev);
 	if (addr == FDT_ADDR_T_NONE)
 		return -EINVAL;
 
-	priv->base = map_sysmem(addr, size);
+	priv->base = map_sysmem(addr, SZ_4K);
 	if (!priv->base)
 		return -ENOMEM;