diff --git a/tools/perf/pmu-events/arm64_metrics.py b/tools/perf/pmu-events/arm64_metrics.py
index 7cd0ebc0bd80..0dcf5236ea1f 100755
--- a/tools/perf/pmu-events/arm64_metrics.py
+++ b/tools/perf/pmu-events/arm64_metrics.py
@@ -1,10 +1,11 @@
 #!/usr/bin/env python3
 # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-from metric import (JsonEncodeMetric, JsonEncodeMetricGroupDescriptions, LoadEvents,
-                    MetricGroup)
+from metric import (d_ratio, Event, JsonEncodeMetric, JsonEncodeMetricGroupDescriptions,
+                    LoadEvents, Metric, MetricGroup)
 import argparse
 import json
 import os
+from typing import Optional
 
 parser = argparse.ArgumentParser(description="ARM perf json generator")
 parser.add_argument("-metricgroups", help="Generate metricgroups data", action='store_true')
@@ -15,7 +16,145 @@ args = parser.parse_args()
 directory = f"{os.path.dirname(os.path.realpath(__file__))}/arch/arm64/{args.vendor}/{args.model}/"
 LoadEvents(directory)
 
-all_metrics = MetricGroup("",[])
+def Arm64Topdown() -> MetricGroup:
+  """Returns a MetricGroup representing ARM64 topdown like metrics."""
+  def TryEvent(name: str) -> Optional[Event]:
+    # Skip an event if not in the json files.
+    try:
+      return Event(name)
+    except:
+      return None
+  # ARM models like a53 lack JSON for INST_RETIRED but have the
+  # architetural standard event in sysfs. Use the PMU name to identify
+  # the sysfs event.
+  pmu_name = f'armv8_{args.model.replace("-", "_")}'
+  ins = Event("instructions")
+  ins_ret = Event("INST_RETIRED", f"{pmu_name}/inst_retired/")
+  cycles = Event("cycles")
+  stall_fe = TryEvent("STALL_FRONTEND")
+  stall_be = TryEvent("STALL_BACKEND")
+  br_ret = TryEvent("BR_RETIRED")
+  br_mp_ret = TryEvent("BR_MIS_PRED_RETIRED")
+  dtlb_walk = TryEvent("DTLB_WALK")
+  itlb_walk = TryEvent("ITLB_WALK")
+  l1d_tlb = TryEvent("L1D_TLB")
+  l1i_tlb = TryEvent("L1I_TLB")
+  l1d_refill = Event("L1D_CACHE_REFILL", f"{pmu_name}/l1d_cache_refill/")
+  l2d_refill = Event("L2D_CACHE_REFILL", f"{pmu_name}/l2d_cache_refill/")
+  l1i_refill = Event("L1I_CACHE_REFILL", f"{pmu_name}/l1i_cache_refill/")
+  l1d_access = Event("L1D_CACHE", f"{pmu_name}/l1d_cache/")
+  l2d_access = Event("L2D_CACHE", f"{pmu_name}/l2d_cache/")
+  llc_access = TryEvent("LL_CACHE_RD")
+  l1i_access = Event("L1I_CACHE", f"{pmu_name}/l1i_cache/")
+  llc_miss_rd = TryEvent("LL_CACHE_MISS_RD")
+  ase_spec = TryEvent("ASE_SPEC")
+  ld_spec = TryEvent("LD_SPEC")
+  st_spec = TryEvent("ST_SPEC")
+  vfp_spec = TryEvent("VFP_SPEC")
+  dp_spec = TryEvent("DP_SPEC")
+  br_immed_spec = TryEvent("BR_IMMED_SPEC")
+  br_indirect_spec = TryEvent("BR_INDIRECT_SPEC")
+  br_ret_spec = TryEvent("BR_RETURN_SPEC")
+  crypto_spec = TryEvent("CRYPTO_SPEC")
+  inst_spec = TryEvent("INST_SPEC")
+
+  return MetricGroup("topdown", [
+      MetricGroup("topdown_tl", [
+          Metric("topdown_tl_ipc", "Instructions per cycle", d_ratio(
+              ins, cycles), "insn/cycle"),
+          Metric("topdown_tl_stall_fe_rate", "Frontend stalls to all cycles",
+                 d_ratio(stall_fe, cycles), "100%") if stall_fe else None,
+          Metric("topdown_tl_stall_be_rate", "Backend stalls to all cycles",
+                 d_ratio(stall_be, cycles), "100%") if stall_be else None,
+      ]),
+      MetricGroup("topdown_fe_bound", [
+          MetricGroup("topdown_fe_br", [
+              Metric("topdown_fe_br_mp_per_insn",
+                     "Branch mispredicts per instruction retired",
+                     d_ratio(br_mp_ret, ins_ret), "br/insn") if br_mp_ret else None,
+              Metric("topdown_fe_br_ins_rate",
+                     "Branches per instruction retired", d_ratio(
+                         br_ret, ins_ret), "100%") if br_ret else None,
+              Metric("topdown_fe_br_mispredict",
+                     "Branch mispredicts per branch instruction",
+                     d_ratio(br_mp_ret, br_ret), "100%") if br_mp_ret else None,
+          ]),
+          MetricGroup("topdown_fe_itlb", [
+              Metric("topdown_fe_itlb_walks", "Itlb walks per insn",
+                     d_ratio(itlb_walk, ins_ret), "walk/insn"),
+              Metric("topdown_fe_itlb_walk_rate", "Itlb walks per l1i access",
+                     d_ratio(itlb_walk, l1i_tlb), "100%"),
+          ]) if itlb_walk else None,
+          MetricGroup("topdown_fe_icache", [
+              Metric("topdown_fe_icache_l1i_per_insn",
+                     "L1I cache refills per instruction",
+                     d_ratio(l1i_refill, ins_ret), "l1i/insn"),
+              Metric("topdown_fe_icache_l1i_miss_rate",
+                     "L1I cache refills per L1I cache access",
+                     d_ratio(l1i_refill, l1i_access), "100%"),
+          ]),
+      ]),
+      MetricGroup("topdown_be_bound", [
+          MetricGroup("topdown_be_dtlb", [
+              Metric("topdown_be_dtlb_walks", "Dtlb walks per instruction",
+                     d_ratio(dtlb_walk, ins_ret), "walk/insn"),
+              Metric("topdown_be_dtlb_walk_rate", "Dtlb walks per l1d access",
+                     d_ratio(dtlb_walk, l1d_tlb), "100%"),
+          ]) if dtlb_walk else None,
+          MetricGroup("topdown_be_mix", [
+              Metric("topdown_be_mix_ld", "Percentage of load instructions",
+                     d_ratio(ld_spec, inst_spec), "100%") if ld_spec else None,
+              Metric("topdown_be_mix_st", "Percentage of store instructions",
+                     d_ratio(st_spec, inst_spec), "100%") if st_spec else None,
+              Metric("topdown_be_mix_simd", "Percentage of SIMD instructions",
+                     d_ratio(ase_spec, inst_spec), "100%") if ase_spec else None,
+              Metric("topdown_be_mix_fp",
+                     "Percentage of floating point instructions",
+                     d_ratio(vfp_spec, inst_spec), "100%") if vfp_spec else None,
+              Metric("topdown_be_mix_dp",
+                     "Percentage of data processing instructions",
+                     d_ratio(dp_spec, inst_spec), "100%") if dp_spec else None,
+              Metric("topdown_be_mix_crypto",
+                     "Percentage of data processing instructions",
+                     d_ratio(crypto_spec, inst_spec), "100%") if crypto_spec else None,
+              Metric(
+                  "topdown_be_mix_br", "Percentage of branch instructions",
+                  d_ratio(br_immed_spec + br_indirect_spec + br_ret_spec,
+                          inst_spec), "100%") if br_immed_spec and br_indirect_spec and br_ret_spec else None,
+          ]) if inst_spec else None,
+          MetricGroup("topdown_be_dcache", [
+              MetricGroup("topdown_be_dcache_l1", [
+                  Metric("topdown_be_dcache_l1_per_insn",
+                         "L1D cache refills per instruction",
+                         d_ratio(l1d_refill, ins_ret), "refills/insn"),
+                  Metric("topdown_be_dcache_l1_miss_rate",
+                         "L1D cache refills per L1D cache access",
+                         d_ratio(l1d_refill, l1d_access), "100%")
+              ]),
+              MetricGroup("topdown_be_dcache_l2", [
+                  Metric("topdown_be_dcache_l2_per_insn",
+                         "L2D cache refills per instruction",
+                         d_ratio(l2d_refill, ins_ret), "refills/insn"),
+                  Metric("topdown_be_dcache_l2_miss_rate",
+                         "L2D cache refills per L2D cache access",
+                         d_ratio(l2d_refill, l2d_access), "100%")
+              ]),
+              MetricGroup("topdown_be_dcache_llc", [
+                  Metric("topdown_be_dcache_llc_per_insn",
+                         "Last level cache misses per instruction",
+                         d_ratio(llc_miss_rd, ins_ret), "miss/insn"),
+                  Metric("topdown_be_dcache_llc_miss_rate",
+                         "Last level cache misses per L2D cache access",
+                         d_ratio(llc_miss_rd, llc_access), "100%")
+              ]) if llc_miss_rd and llc_access else None,
+          ]),
+      ]),
+  ])
+
+
+all_metrics = MetricGroup("",[
+    Arm64Topdown(),
+])
 
 if args.metricgroups:
   print(JsonEncodeMetricGroupDescriptions(all_metrics))
