diff --git a/include/dt-bindings/clock/samsung,exynos990.h b/include/dt-bindings/clock/samsung,exynos990.h
index 47540307cb52..c06f591d9d90 100644
--- a/include/dt-bindings/clock/samsung,exynos990.h
+++ b/include/dt-bindings/clock/samsung,exynos990.h
@@ -434,5 +434,6 @@
 #define CLK_GOUT_PERIS_TMU_TOP_PCLK		17
 #define CLK_GOUT_PERIS_OTP_CON_BIRA_OSCCLK	18
 #define CLK_GOUT_PERIS_OTP_CON_TOP_OSCCLK	19
+#define CLK_GOUT_PERIS_TMU_SUB_PCLK		20
 
 #endif