diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c
index 389af3c15ec450bf9bf8e8526dca3cf00c958a57..4bae2e3c0d168cd9f06b52b41c62a68b45eec636 100644
--- a/drivers/clk/samsung/clk-exynos5420.c
+++ b/drivers/clk/samsung/clk-exynos5420.c
@@ -677,8 +677,8 @@ static struct samsung_mux_clock exynos5x_mux_clks[] __initdata = {
 			SRC_TOP5, 20, 1),
 	MUX(CLK_MOUT_USER_ACLK300_DISP1, "mout_user_aclk300_disp1",
 			mout_user_aclk300_disp1_p, SRC_TOP5, 24, 1),
-	MUX(0, "mout_user_aclk300_gscl", mout_user_aclk300_gscl_p,
-			SRC_TOP5, 28, 1),
+	MUX(CLK_MOUT_USER_ACLK300_GSCL, "mout_user_aclk300_gscl",
+			mout_user_aclk300_gscl_p, SRC_TOP5, 28, 1),
 
 	MUX(0, "mout_sclk_mpll", mout_mpll_p, SRC_TOP6, 0, 1),
 	MUX(CLK_MOUT_VPLL, "mout_sclk_vpll", mout_vpll_p, SRC_TOP6, 4, 1),
@@ -729,8 +729,8 @@ static struct samsung_mux_clock exynos5x_mux_clks[] __initdata = {
 			SRC_TOP12, 20, 1),
 	MUX(CLK_MOUT_SW_ACLK300, "mout_sw_aclk300_disp1",
 			mout_sw_aclk300_disp1_p, SRC_TOP12, 24, 1),
-	MUX(0, "mout_sw_aclk300_gscl", mout_sw_aclk300_gscl_p,
-			SRC_TOP12, 28, 1),
+	MUX(CLK_MOUT_SW_ACLK300_GSCL, "mout_sw_aclk300_gscl",
+			mout_sw_aclk300_gscl_p, SRC_TOP12, 28, 1),
 
 	/* DISP1 Block */
 	MUX(0, "mout_mipi1", mout_group2_p, SRC_DISP10, 16, 3),
diff --git a/include/dt-bindings/clock/exynos5420.h b/include/dt-bindings/clock/exynos5420.h
index 99da0d117a7d9d15b174cb681ed4b410d4656e80..b5af23afb97406dfcb634305f130b9b69cbf5c16 100644
--- a/include/dt-bindings/clock/exynos5420.h
+++ b/include/dt-bindings/clock/exynos5420.h
@@ -210,6 +210,8 @@
 #define CLK_MOUT_SW_ACLK300     649
 #define CLK_MOUT_USER_ACLK400_DISP1     650
 #define CLK_MOUT_SW_ACLK400     651
+#define CLK_MOUT_USER_ACLK300_GSCL	652
+#define CLK_MOUT_SW_ACLK300_GSCL	653
 
 /* divider clocks */
 #define CLK_DOUT_PIXEL		768