diff --git a/drivers/pinctrl/uniphier/Makefile b/drivers/pinctrl/uniphier/Makefile
index e215b10..c5cdd84 100644
--- a/drivers/pinctrl/uniphier/Makefile
+++ b/drivers/pinctrl/uniphier/Makefile
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
 obj-$(CONFIG_PINCTRL_UNIPHIER_CORE)		+= pinctrl-uniphier-core.o
 
 obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_LD4)		+= pinctrl-ph1-ld4.o