diff --git a/board/amcc/luan/luan.c b/board/amcc/luan/luan.c
index 2eff3b3..7b16f8a 100644
--- a/board/amcc/luan/luan.c
+++ b/board/amcc/luan/luan.c
@@ -104,6 +104,13 @@
 	return  0;
 }
 
+/*
+ * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with
+ * board specific values.
+ */
+u32 ddr_clktr(u32 default_val) {
+	return (SDRAM_CLKTR_CLKP_180_DEG_ADV);
+}
 
 /*************************************************************************
  *  int testdram()
diff --git a/include/configs/luan.h b/include/configs/luan.h
index cbb59c5..e192d06 100644
--- a/include/configs/luan.h
+++ b/include/configs/luan.h
@@ -136,7 +136,6 @@
 #define CONFIG_SPD_EEPROM	1	/* Use SPD EEPROM for setup	*/
 #define SPD_EEPROM_ADDRESS	{0x53, 0x52}	/* SPD i2c spd addresses*/
 #define CONFIG_DDR_ECC		1	/* with ECC support		*/
-#define CFG_44x_DDR2_CKTR_180	1	/* use 180 deg advance		*/
 
 /*-----------------------------------------------------------------------
  * I2C