diff --git a/arch/powerpc/include/asm/ppc4xx-sdram.h b/arch/powerpc/include/asm/ppc4xx-sdram.h
index 66cf50902d06f84a72ee7a20bd3812f96f8869be..d9506e27c1fde792c8c4a2915484cc7c9245549f 100644
--- a/arch/powerpc/include/asm/ppc4xx-sdram.h
+++ b/arch/powerpc/include/asm/ppc4xx-sdram.h
@@ -344,6 +344,9 @@
 #define SDRAM_RXBAS_SDSZ_2048		SDRAM_RXBAS_SDSZ_2048MB
 #define SDRAM_RXBAS_SDSZ_4096		SDRAM_RXBAS_SDSZ_4096MB
 #define SDRAM_RXBAS_SDSZ_8192		SDRAM_RXBAS_SDSZ_8192MB
+#endif /* CONFIG_405EX */
+
+/* The mode definitions are the same for all PPC4xx variants */
 #define SDRAM_RXBAS_SDAM_MODE0		PPC_REG_VAL(23, 0x0)
 #define SDRAM_RXBAS_SDAM_MODE1		PPC_REG_VAL(23, 0x1)
 #define SDRAM_RXBAS_SDAM_MODE2		PPC_REG_VAL(23, 0x2)
@@ -356,7 +359,6 @@
 #define SDRAM_RXBAS_SDAM_MODE9		PPC_REG_VAL(23, 0x9)
 #define SDRAM_RXBAS_SDBE_DISABLE	PPC_REG_VAL(31, 0x0)
 #define SDRAM_RXBAS_SDBE_ENABLE		PPC_REG_VAL(31, 0x1)
-#endif /* CONFIG_405EX */
 
 /*
  * Memory controller registers