diff --git a/arch/arm/include/asm/arch-kirkwood/kw88f6281.h b/arch/arm/include/asm/arch-kirkwood/kw88f6281.h
index 80723ea..22d10f1 100644
--- a/arch/arm/include/asm/arch-kirkwood/kw88f6281.h
+++ b/arch/arm/include/asm/arch-kirkwood/kw88f6281.h
@@ -27,11 +27,13 @@
 #ifndef _ASM_ARCH_KW88F6281_H
 #define _ASM_ARCH_KW88F6281_H
 
-/* SOC specific definations */
+/* SOC specific definitions */
 #define KW88F6281_REGS_PHYS_BASE	0xf1000000
 #define KW_REGS_PHY_BASE		KW88F6281_REGS_PHYS_BASE
 
-/* TCLK Core Clock defination*/
-#define CONFIG_SYS_TCLK	  200000000 /* 200MHz */
+/* TCLK Core Clock definition */
+#ifndef CONFIG_SYS_TCLK
+#define CONFIG_SYS_TCLK	200000000 /* 200MHz */
+#endif
 
 #endif /* _ASM_ARCH_KW88F6281_H */