code: def _ethos_u55_cascader():
      sram = MemoryRegion(
          name="SRAM",
          size=10**6,
          read_bandwidth=16,
          write_bandwidth=16,
          read_latency=0,
          write_latency=0,
          burst_length=1,
      )
      flash = MemoryRegion(
          name="FLASH",
          size=10**7,
          read_bandwidth=4,
          write_bandwidth=4,
      )
  
      device_config = EthosuDeviceConfig("ethos-u55-256")
      cascader_options = cascader_test_infra.make_options(
          cascade_region=sram,
          max_proposals=64,
          stripe_factors=4,
          max_plan_size=10,
          max_open_plans=8,
          max_closed_plans=32,
          always_copy_size=1024,
          disable_pareto_plans=False,
          disable_pareto_proposals=False,
          enable_striping=False,
      )
      return _create_cascader(
          options=cascader_options,
          io_region=sram,
          constant_region=flash,
          working_regions=[sram],
          device_config=device_config,
      )
  
file_path: tvm/tests/python/contrib/test_ethosu/cascader/test_integration.py
imports: import pytest
  import numpy
  import tvm
  from tvm import relay
  from tvm.relay.backend.contrib.ethosu.codegen import _create_cascader
  from tvm.relay.backend.contrib.ethosu.tir.compiler import _lower_to_tir
  from tvm.contrib.ethosu.cascader import MemoryRegion, EthosuDeviceConfig
  from ..None import infra
  from .None import infra
label_desc: Use image node_id 1 for calling a global function with example usage: _ethos_u55_cascader() and returns: _create_cascader