diff --git a/arch/mips/include/asm/malta.h b/arch/mips/include/asm/malta.h
index 9e7c045..d9ffc15 100644
--- a/arch/mips/include/asm/malta.h
+++ b/arch/mips/include/asm/malta.h
@@ -64,4 +64,9 @@
 
 #define PCI_CFG_PIIX4_GENCFG_SERIRQ	(1 << 16)
 
+#define PCI_CFG_PIIX4_IDETIM_PRI	0x40
+#define PCI_CFG_PIIX4_IDETIM_SEC	0x42
+
+#define PCI_CFG_PIIX4_IDETIM_IDE	(1 << 15)
+
 #endif /* _MIPS_ASM_MALTA_H */