diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
index b45fb65889d2..518727d0dfcc 100644
--- a/arch/arm/mach-s3c2410/mach-bast.c
+++ b/arch/arm/mach-s3c2410/mach-bast.c
@@ -592,10 +592,10 @@ static void __init bast_map_io(void)
 {
 	/* initialise the clocks */
 
-	s3c24xx_dclk0.parent = NULL;
+	s3c24xx_dclk0.parent = &clk_upll;
 	s3c24xx_dclk0.rate   = 12*1000*1000;
 
-	s3c24xx_dclk1.parent = NULL;
+	s3c24xx_dclk1.parent = &clk_upll;
 	s3c24xx_dclk1.rate   = 24*1000*1000;
 
 	s3c24xx_clkout0.parent  = &s3c24xx_dclk0;
diff --git a/arch/arm/mach-s3c2410/mach-vr1000.c b/arch/arm/mach-s3c2410/mach-vr1000.c
index 3aade7b78fe5..c56423373ff3 100644
--- a/arch/arm/mach-s3c2410/mach-vr1000.c
+++ b/arch/arm/mach-s3c2410/mach-vr1000.c
@@ -393,7 +393,7 @@ static void __init vr1000_map_io(void)
 {
 	/* initialise clock sources */
 
-	s3c24xx_dclk0.parent = NULL;
+	s3c24xx_dclk0.parent = &clk_upll;
 	s3c24xx_dclk0.rate   = 12*1000*1000;
 
 	s3c24xx_dclk1.parent = NULL;
diff --git a/arch/arm/mach-s3c2440/mach-anubis.c b/arch/arm/mach-s3c2440/mach-anubis.c
index 3d3dfa95db8e..47258915a2f9 100644
--- a/arch/arm/mach-s3c2440/mach-anubis.c
+++ b/arch/arm/mach-s3c2440/mach-anubis.c
@@ -413,10 +413,10 @@ static void __init anubis_map_io(void)
 {
 	/* initialise the clocks */
 
-	s3c24xx_dclk0.parent = NULL;
+	s3c24xx_dclk0.parent = &clk_upll;
 	s3c24xx_dclk0.rate   = 12*1000*1000;
 
-	s3c24xx_dclk1.parent = NULL;
+	s3c24xx_dclk1.parent = &clk_upll;
 	s3c24xx_dclk1.rate   = 24*1000*1000;
 
 	s3c24xx_clkout0.parent  = &s3c24xx_dclk0;
diff --git a/arch/arm/mach-s3c2440/mach-osiris.c b/arch/arm/mach-s3c2440/mach-osiris.c
index 78af7664988b..8a8acdbd072d 100644
--- a/arch/arm/mach-s3c2440/mach-osiris.c
+++ b/arch/arm/mach-s3c2440/mach-osiris.c
@@ -18,6 +18,7 @@
 #include <linux/device.h>
 #include <linux/sysdev.h>
 #include <linux/serial_core.h>
+#include <linux/clk.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -344,10 +345,10 @@ static void __init osiris_map_io(void)
 
 	/* initialise the clocks */
 
-	s3c24xx_dclk0.parent = NULL;
+	s3c24xx_dclk0.parent = &clk_upll;
 	s3c24xx_dclk0.rate   = 12*1000*1000;
 
-	s3c24xx_dclk1.parent = NULL;
+	s3c24xx_dclk1.parent = &clk_upll;
 	s3c24xx_dclk1.rate   = 24*1000*1000;
 
 	s3c24xx_clkout0.parent  = &s3c24xx_dclk0;