{
  "top_module": "chip_top",
  "old_p4_cl": "123450",
  "new_p4_cl": "123456",
  "old_port_count": 9,
  "new_port_count": 9,
  "changes": [
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      "name": "legacy_mode",
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      ],
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      },
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    },
    {
      "name": "link_up",
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      ],
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      }
    },
    {
      "name": "clk",
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      ],
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      },
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      }
    },
    {
      "name": "ctrl",
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        "MODPORT_CHANGED",
        "ORDER_CHANGED"
      ],
      "breaking": true,
      "old": {
        "name": "ctrl",
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      },
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      }
    },
    {
      "name": "lanes",
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        "WIDTH_CHANGED",
        "TYPE_CHANGED"
      ],
      "breaking": true,
      "old": {
        "name": "lanes",
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      },
      "new": {
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      }
    },
    {
      "name": "pad",
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        "ORDER_ONLY"
      ],
      "breaking": false,
      "old": {
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      },
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      }
    },
    {
      "name": "rst_n",
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        "ORDER_ONLY"
      ],
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    },
    {
      "name": "rx_data",
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        "TYPE_CHANGED"
      ],
      "breaking": true,
      "old": {
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      },
      "new": {
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      }
    },
    {
      "name": "status",
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        "DIRECTION_CHANGED"
      ],
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      "old": {
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      "new": {
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      }
    },
    {
      "name": "tx_data",
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        "WIDTH_CHANGED",
        "TYPE_CHANGED"
      ],
      "breaking": true,
      "old": {
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      },
      "new": {
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        "declaration_order": 3
      }
    }
  ]
}