diff --git a/include/asm-arm/pgtable.h b/include/asm-arm/pgtable.h
index e595ae2..e85c08d 100644
--- a/include/asm-arm/pgtable.h
+++ b/include/asm-arm/pgtable.h
@@ -156,6 +156,7 @@
 #define L_PTE_WRITE		(1 << 5)
 #define L_PTE_EXEC		(1 << 6)
 #define L_PTE_DIRTY		(1 << 7)
+#define L_PTE_COHERENT		(1 << 9)	/* I/O coherent (xsc3) */
 #define L_PTE_SHARED		(1 << 10)	/* shared between CPUs (v6) */
 #define L_PTE_ASID		(1 << 11)	/* non-global (use ASID, v6) */