diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c
index 7c373b83..e352a5a 100644
--- a/arch/arm/mach-mx5/clock-mx51-mx53.c
+++ b/arch/arm/mach-mx5/clock-mx51-mx53.c
@@ -1662,6 +1662,7 @@ int __init mx51_clocks_init_dt(void)
 {
 	unsigned long ckil, osc, ckih1, ckih2;
 
+	ckil = osc = ckih1 = ckih2 = 0;
 	clk_get_freq_dt(&ckil, &osc, &ckih1, &ckih2);
 	return mx51_clocks_init(ckil, osc, ckih1, ckih2);
 }
@@ -1670,6 +1671,7 @@ int __init mx53_clocks_init_dt(void)
 {
 	unsigned long ckil, osc, ckih1, ckih2;
 
+	ckil = osc = ckih1 = ckih2 = 0;
 	clk_get_freq_dt(&ckil, &osc, &ckih1, &ckih2);
 	return mx53_clocks_init(ckil, osc, ckih1, ckih2);
 }