diff --git a/arch/powerpc/include/asm/fsl_ddr_sdram.h b/arch/powerpc/include/asm/fsl_ddr_sdram.h
index 1778cc5..bc063ea 100644
--- a/arch/powerpc/include/asm/fsl_ddr_sdram.h
+++ b/arch/powerpc/include/asm/fsl_ddr_sdram.h
@@ -271,6 +271,9 @@
 	unsigned int rcw_2;
 	/* control register 1 */
 	unsigned int ddr_cdr1;
+
+	unsigned int trwt_override;
+	unsigned int trwt;			/* read-to-write turnaround */
 } memctl_options_t;
 
 extern phys_size_t fsl_ddr_sdram(void);