diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 60a21b6b2057..054f8a71d686 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -284,6 +284,7 @@
 #define   CTRL_TE	0x00c00000	/* thread enable */
 #define   CTRL_RUNLATCH	0x1
 #define SPRN_DAWR0	0xB4
+#define SPRN_DAWR1	0xB5
 #define SPRN_RPR	0xBA	/* Relative Priority Register */
 #define SPRN_CIABR	0xBB
 #define   CIABR_PRIV		0x3
@@ -291,6 +292,7 @@
 #define   CIABR_PRIV_SUPER	2
 #define   CIABR_PRIV_HYPER	3
 #define SPRN_DAWRX0	0xBC
+#define SPRN_DAWRX1	0xBD
 #define   DAWRX_USER	__MASK(0)
 #define   DAWRX_KERNEL	__MASK(1)
 #define   DAWRX_HYP	__MASK(2)