sonic-buildimage/device/quanta/x86_64-quanta_ix8c_bwde-r0/media_settings.json

{
    "GLOBAL_MEDIA_SETTINGS": {
        "1-14,16": {
            "Default": {
                "preemphasis": {
                    "lane0": "0x0c5602"
                }
            }
        },
        "15,17-20,22-24,36-48": {
            "Default": {
                "preemphasis": {
                    "lane0": "0x085804"
                }
            }
        },
        "21,25-31,35": {
            "Default": {
                "preemphasis": {
                    "lane0": "0x065806"
                }
            }
        },
        "32-34": {
            "Default": {
                "preemphasis": {
                    "lane0": "0x075805"
                }
            }
        },
        "49,50,52": {
            "Default": {
                "preemphasis": {
                    "lane0": "0x0c5404",
                    "lane1": "0x0c5404",
                    "lane2": "0x0c5404",
                    "lane3": "0x0c5404"
                }
            }
        },
        "51,54,56": {
            "Default": {
                "preemphasis": {
                    "lane0": "0x105202",
                    "lane1": "0x105202",
                    "lane2": "0x105202",
                    "lane3": "0x105202"
                }
            }
        },
        "53-53": {
            "Default": {
                "preemphasis": {
                    "lane0": "0x0d5205",
                    "lane1": "0x0d5205",
                    "lane2": "0x0d5205",
                    "lane3": "0x0d5205"
                }
            }
        },
        "55-55": {
            "Default": {
                "preemphasis": {
                    "lane0": "0x115201",
                    "lane1": "0x115201",
                    "lane2": "0x115201",
                    "lane3": "0x115201"
                }
            }
        }
    }
}