diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index 3d69bda0e608..95de1aaee0e9 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -135,7 +135,6 @@
 #define SYS_SVCR_SMSTOP_SMZA_EL0	sys_reg(0, 3, 4, 6, 3)
 
 #define SYS_OSDTRRX_EL1			sys_reg(2, 0, 0, 0, 2)
-#define SYS_MDSCR_EL1			sys_reg(2, 0, 0, 2, 2)
 #define SYS_OSDTRTX_EL1			sys_reg(2, 0, 0, 3, 2)
 #define SYS_OSECCR_EL1			sys_reg(2, 0, 0, 6, 2)
 #define SYS_DBGBVRn_EL1(n)		sys_reg(2, 0, 0, n, 4)
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index df7a7ba97b43..601cc8024734 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -55,6 +55,34 @@ Field	29	TX
 Res0	28:0
 EndSysreg
 
+Sysreg	MDSCR_EL1	2	0	0	2	2
+Res0	63:36
+Field	35	EHBWE
+Field	34	EnSPM
+Field	33	TTA
+Field	32	EMBWE
+Field	31	TFO
+Field	30	RXfull
+Field	29	TXfull
+Res0	28
+Field	27	RXO
+Field	26	TXU
+Res0	25:24
+Field	23:22	INTdis
+Field	21	TDA
+Res0	20
+Field	19	SC2
+Res0	18:16
+Field	15	MDE
+Field	14	HDE
+Field	13	KDE
+Field	12	TDCC
+Res0	11:7
+Field	6	ERR
+Res0	5:1
+Field	0	SS
+EndSysreg
+
 Sysreg ID_PFR0_EL1	3	0	0	1	0
 Res0	63:32
 UnsignedEnum	31:28	RAS