diff --git a/drivers/phy/socionext/phy-uniphier-usb3hs.c b/drivers/phy/socionext/phy-uniphier-usb3hs.c
index b1b048be6166..50f379fc4e06 100644
--- a/drivers/phy/socionext/phy-uniphier-usb3hs.c
+++ b/drivers/phy/socionext/phy-uniphier-usb3hs.c
@@ -335,13 +335,9 @@ static int uniphier_u3hsphy_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->clk_parent))
 		return PTR_ERR(priv->clk_parent);
 
-	priv->clk_ext = devm_clk_get(dev, "phy-ext");
-	if (IS_ERR(priv->clk_ext)) {
-		if (PTR_ERR(priv->clk_ext) == -ENOENT)
-			priv->clk_ext = NULL;
-		else
-			return PTR_ERR(priv->clk_ext);
-	}
+	priv->clk_ext = devm_clk_get_optional(dev, "phy-ext");
+	if (IS_ERR(priv->clk_ext))
+		return PTR_ERR(priv->clk_ext);
 
 	priv->rst = devm_reset_control_get_shared(dev, "phy");
 	if (IS_ERR(priv->rst))
diff --git a/drivers/phy/socionext/phy-uniphier-usb3ss.c b/drivers/phy/socionext/phy-uniphier-usb3ss.c
index 4be95679c7d8..ec231e40ef2a 100644
--- a/drivers/phy/socionext/phy-uniphier-usb3ss.c
+++ b/drivers/phy/socionext/phy-uniphier-usb3ss.c
@@ -238,13 +238,9 @@ static int uniphier_u3ssphy_probe(struct platform_device *pdev)
 		if (IS_ERR(priv->clk))
 			return PTR_ERR(priv->clk);
 
-		priv->clk_ext = devm_clk_get(dev, "phy-ext");
-		if (IS_ERR(priv->clk_ext)) {
-			if (PTR_ERR(priv->clk_ext) == -ENOENT)
-				priv->clk_ext = NULL;
-			else
-				return PTR_ERR(priv->clk_ext);
-		}
+		priv->clk_ext = devm_clk_get_optional(dev, "phy-ext");
+		if (IS_ERR(priv->clk_ext))
+			return PTR_ERR(priv->clk_ext);
 
 		priv->rst = devm_reset_control_get_shared(dev, "phy");
 		if (IS_ERR(priv->rst))