diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
index 1259cbadfdc8..b555e2cc1dc3 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.h
@@ -36,29 +36,31 @@ enum arm_spe_op_type {
 	ARM_SPE_OP_OTHER	= 1 << 0,
 	ARM_SPE_OP_LDST		= 1 << 1,
 	ARM_SPE_OP_BRANCH_ERET	= 1 << 2,
+};
 
-	/* Second level operation type for OTHER */
-	ARM_SPE_OP_SVE_OTHER		= 1 << 16,
+enum arm_spe_2nd_op_ldst {
+	ARM_SPE_OP_GP_REG		= 1 << 8,
+	ARM_SPE_OP_UNSPEC_REG		= 1 << 9,
+	ARM_SPE_OP_NV_SYSREG		= 1 << 10,
+	ARM_SPE_OP_SIMD_FP		= 1 << 11,
+	ARM_SPE_OP_SVE_OTHER		= 1 << 12,
+	ARM_SPE_OP_SVE_LDST		= 1 << 13,
 
-	/* Second level operation type for LDST */
-	ARM_SPE_OP_LD			= 1 << 16,
-	ARM_SPE_OP_ST			= 1 << 17,
-	ARM_SPE_OP_ATOMIC		= 1 << 18,
-	ARM_SPE_OP_EXCL			= 1 << 19,
-	ARM_SPE_OP_AR			= 1 << 20,
-	ARM_SPE_OP_SIMD_FP		= 1 << 21,
-	ARM_SPE_OP_GP_REG		= 1 << 22,
-	ARM_SPE_OP_UNSPEC_REG		= 1 << 23,
-	ARM_SPE_OP_NV_SYSREG		= 1 << 24,
-	ARM_SPE_OP_SVE_LDST		= 1 << 25,
+	/* Assisted information for memory / SIMD */
+	ARM_SPE_OP_LD			= 1 << 20,
+	ARM_SPE_OP_ST			= 1 << 21,
+	ARM_SPE_OP_ATOMIC		= 1 << 22,
+	ARM_SPE_OP_EXCL			= 1 << 23,
+	ARM_SPE_OP_AR			= 1 << 24,
+};
 
-	/* Second level operation type for BRANCH_ERET */
-	ARM_SPE_OP_BR_COND		= 1 << 16,
-	ARM_SPE_OP_BR_INDIRECT		= 1 << 17,
-	ARM_SPE_OP_BR_GCS		= 1 << 18,
-	ARM_SPE_OP_BR_CR_BL		= 1 << 19,
-	ARM_SPE_OP_BR_CR_RET		= 1 << 20,
-	ARM_SPE_OP_BR_CR_NON_BL_RET	= 1 << 21,
+enum arm_spe_2nd_op_branch {
+	ARM_SPE_OP_BR_COND		= 1 << 8,
+	ARM_SPE_OP_BR_INDIRECT		= 1 << 9,
+	ARM_SPE_OP_BR_GCS		= 1 << 10,
+	ARM_SPE_OP_BR_CR_BL		= 1 << 11,
+	ARM_SPE_OP_BR_CR_RET		= 1 << 12,
+	ARM_SPE_OP_BR_CR_NON_BL_RET	= 1 << 13,
 };
 
 enum arm_spe_common_data_source {