{
  "comments": [ "phosphor-regulators configuration file for IBM Rainier systems" ],


  "rules": [
    {
      "comments": [ "Rule to set PMBus PAGE to 0" ],
      "id": "set_page0_rule",
      "actions": [
        { "i2c_write_byte": { "register": "0x00", "value": "0x00" } }
      ]
    },


    {
      "comments": [ "Rule to set PMBus PAGE to 1" ],
      "id": "set_page1_rule",
      "actions": [
        { "i2c_write_byte": { "register": "0x00", "value": "0x01" } }
      ]
    },


    {
      "comments": [ "Rule to set output voltage of a PMBus regulator" ],
      "id": "set_voltage_rule",
      "actions": [
        {
          "comments": [ "Write volts value to VOUT_COMMAND in linear format.",
                        "Get volts value from configuration.  Get exponent",
                        "from VOUT_MODE.  Verify write was successful." ],
          "pmbus_write_vout_command": { "format": "linear", "is_verified": true }
        }
      ]
    },


    {
      "comments": [ "Rule to set output voltage of PAGE 0 of a PMBus regulator" ],
      "id": "set_voltage_page0_rule",
      "actions": [
        { "run_rule": "set_page0_rule" },
        { "run_rule": "set_voltage_rule" }
      ]
    },


    {
      "comments": [ "Rule to set output voltage of PAGE 1 of a PMBus regulator" ],
      "id": "set_voltage_page1_rule",
      "actions": [
        { "run_rule": "set_page1_rule" },
        { "run_rule": "set_voltage_rule" }
      ]
    },


    {
      "comments": [ "Rule to set output voltage of a PMBus regulator using",
                    "PMBus OPERATION and VOUT_COMMAND" ],
      "id": "set_operation_and_voltage_rule",
      "actions": [
        {
          "comments": [ "Set PMBus OPERATION to 0x80 indicating output voltage",
                        "is set by the PMBus VOUT_COMMAND" ],
          "i2c_write_byte": { "register": "0x01", "value": "0x80" }
        },

        {
          "comments": [ "Set the output voltage using the PMBus VOUT_COMMAND" ],
          "run_rule": "set_voltage_rule"
        },

        {
          "comments": [ "Set PMBus OPERATION to 0xB0 indicating output voltage",
                        "will now be set by AVSBus (AVS_VOUT_COMMAND).",
                        "Hardware settings cause the VOUT_COMMAND value to be",
                        "the initial voltage value for AVSBus." ],
          "i2c_write_byte": { "register": "0x01", "value": "0xB0" }
        }
      ]
    },


    {
      "comments": [ "Rule to set IOUT_OC_WARN_LIMIT for a PMBus regulator" ],
      "id": "set_iout_oc_warn_limit_rule",
      "actions": [
        {
          "comments": [ "Set PMBus IOUT_OC_WARN_LIMIT to 326A to ensure OCW",
                        "asserts at the roll-over bug identified in the",
                        "silicon.  326A = 0x08A3.  PMBus requires",
                        "the low order byte to be written first." ],
          "i2c_write_bytes": { "register": "0x4A", "values": [ "0xA3", "0x08" ] }
        }
      ]
    },


    {
      "comments": [ "Rule to configure a VDD rail using the PMBus interface" ],
      "id": "configure_vdd_rule",
      "actions": [
        { "run_rule": "set_page0_rule" },
        { "run_rule": "set_iout_oc_warn_limit_rule" },
        {
          "comments": [ "Set VOUT_MODE to exponent of -9 for VDD regulator",
                        "to support older and newer hardware." ],
          "i2c_write_byte": { "register": "0x20", "value": "0x17" }
        },
        { "run_rule": "set_operation_and_voltage_rule" },
        {
          "comments": [ "Set VOUT_MIN to 0V since for VDD the voltage",
                        "can go down to 0.5V so we want to lower this",
                        "limit below 0.5V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x2B", "values": [ "0x00", "0x00" ] }
        },
        {
          "comments": [ "Set VOUT_MAX to 1.255V since for VDD the voltage",
                        "can go up to 1.1V so we want to raise this",
                        "limit above 1.1V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x24", "values": [ "0x83", "0x02" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_ON for VDD to a value of 0.5V." ],
          "i2c_write_bytes": { "register": "0x5E", "values": [ "0x00", "0x01" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_OFF for VDD to a value of 0.4V." ],
          "i2c_write_bytes": { "register": "0x5F", "values": [ "0xCD", "0x00" ] }
        },
        {
          "comments": [ "Set VOUT_OV_WARN_LIMIT for VDD to a value of 1.30V." ],
          "i2c_write_bytes": { "register": "0x42", "values": [ "0x9A", "0x02" ] }
        },
        {
          "comments": [ "Set VOUT_UV_WARN_LIMIT for VDD to a value of 0.45V." ],
          "i2c_write_bytes": { "register": "0x43", "values": [ "0xE6", "0x00" ] }
        },
        {
          "comments": [ "Set TOFF_FALL time for VDD to a value of 10ms." ],
          "i2c_write_bytes": { "register": "0x65", "values": [ "0x28", "0xF0" ] }
        },
        {
          "comments": [ "Set IOUT_OC_FAULT_RESPONSE for VDD to shutdown." ],
          "i2c_write_byte": { "register": "0x47", "value": "0xC0" }
        }
      ]
    },


    {
      "comments": [ "Rule to configure a VDN rail using the PMBus interface" ],
      "id": "configure_vdn_rule",
      "actions": [
        { "run_rule": "set_page0_rule" },
        { "run_rule": "set_operation_and_voltage_rule" },
        {
          "comments": [ "Set VOUT_MIN to 0V since for VDN the voltage",
                        "can go down to 0.6V so we want to lower this",
                        "limit below 0.6V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x2B", "values": [ "0x00", "0x00" ] }
        },
        {
          "comments": [ "Set VOUT_MAX to 1.1V since for VDN the voltage",
                        "can go up to 1.0V so we want to raise this",
                        "limit above 1.0V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x24", "values": [ "0x33", "0x02" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_ON for VDN to a value of 0.45V." ],
          "i2c_write_bytes": { "register": "0x5E", "values": [ "0xE6", "0x00" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_OFF for VDN to a value of 0.40V." ],
          "i2c_write_bytes": { "register": "0x5F", "values": [ "0xCC", "0x00" ] }
        }
      ]
    },


    {
      "comments": [ "Rule to configure a VCS rail using the PMBus interface" ],
      "id": "configure_vcs_rule",
      "actions": [
        { "run_rule": "set_page1_rule" },
        { "run_rule": "set_operation_and_voltage_rule" },
        {
          "comments": [ "Set VOUT_MIN to 0V since for VCS the voltage",
                        "can go down to 0.7V so we want to lower this",
                        "limit below 0.7V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x2B", "values": [ "0x00", "0x00" ] }
        },
        {
          "comments": [ "Set VOUT_MAX to 1.2V since for VCS the voltage",
                        "can go up to 1.1V so we want to raise this",
                        "limit above 1.1V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x24", "values": [ "0x66", "0x02" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_ON for VCS to a value of 0.55V." ],
          "i2c_write_bytes": { "register": "0x5E", "values": [ "0x19", "0x01" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_OFF for VCS to a value of 0.50V." ],
          "i2c_write_bytes": { "register": "0x5F", "values": [ "0x00", "0x01" ] }
        }
      ]
    },


    {
      "comments": [ "Rule to configure a VIO rail using the PMBus interface" ],
      "id": "configure_vio_rule",
      "actions": [
        { "run_rule": "set_page0_rule" },
        { "run_rule": "set_operation_and_voltage_rule" },
        {
          "comments": [ "Set VOUT_MIN to 0V since for VIO the voltage",
                        "can go down to 0.8V so we want to lower this",
                        "limit below 0.8V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x2B", "values": [ "0x00", "0x00" ] }
        },
        {
          "comments": [ "Set VOUT_MAX to 1.1V since for VIO the voltage",
                        "can go up to 1.0V so we want to raise this",
                        "limit above 1.0V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x24", "values": [ "0x33", "0x02" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_ON for VIO to a value of 0.55V." ],
          "i2c_write_bytes": { "register": "0x5E", "values": [ "0x19", "0x01" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_OFF for VIO to a value of 0.50V." ],
          "i2c_write_bytes": { "register": "0x5F", "values": [ "0x00", "0x01" ] }
        }
      ]
    },


    {
      "comments": [ "Rule to configure a VPCIE rail using the PMBus interface" ],
      "id": "configure_vpcie_rule",
      "actions": [
        { "run_rule": "set_page0_rule" },
        { "run_rule": "set_voltage_rule" },
        {
          "comments": [ "Set VOUT_MIN to 0V since for VPCIE the voltage",
                        "can go down to 0.81V so we want to lower this",
                        "limit below 0.81V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x2B", "values": [ "0x00", "0x00" ] }
        },
        {
          "comments": [ "Set VOUT_MAX to 1.0V since for VPCIE the voltage",
                        "can go up to 0.91V so we want to raise this",
                        "limit above 0.91V so the regulator does not trip." ],
          "i2c_write_bytes": { "register": "0x24", "values": [ "0x00", "0x02" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_ON for VPCIE to a value of 0.65V." ],
          "i2c_write_bytes": { "register": "0x5E", "values": [ "0x4C", "0x01" ] }
        },
        {
          "comments": [ "Set POWER_GOOD_OFF for VPCIE to a value of 0.60V." ],
          "i2c_write_bytes": { "register": "0x5F", "values": [ "0x33", "0x01" ] }
        }
      ]
    },


    {
      "comments": [ "Rule to read sensors on IR38064 regulators using the",
                    "PMBus interface" ],
      "id": "read_sensors_ir38064_rule",
      "actions": [
        {
          "comments": [ "Read output current from READ_IOUT" ],
          "pmbus_read_sensor": {
            "type": "iout",
            "command": "0x8C",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read highest output current from MFR_IOUT_PEAK" ],
          "pmbus_read_sensor": {
            "type": "iout_peak",
            "command": "0xDC",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read output power from READ_POUT" ],
          "pmbus_read_sensor": {
            "type": "pout",
            "command": "0x96",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read temperature from READ_TEMPERATURE" ],
          "pmbus_read_sensor": {
            "type": "temperature",
            "command": "0x8D",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read highest temperature from MFR_TEMPERATURE_PEAK" ],
          "pmbus_read_sensor": {
            "type": "temperature_peak",
            "command": "0xDD",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read output voltage from READ_VOUT.",
                        "Note: regulator does not support VOUT_MODE, so the",
                        "exponent must be specified." ],
          "pmbus_read_sensor": {
            "type": "vout",
            "command": "0x8B",
            "format": "linear_16",
            "exponent": -8
          }
        },
        {
          "comments": [ "Read highest output voltage from MFR_VOUT_PEAK.",
                        "Note: regulator does not support VOUT_MODE, so the",
                        "exponent must be specified." ],
          "pmbus_read_sensor": {
            "type": "vout_peak",
            "command": "0xDB",
            "format": "linear_16",
            "exponent": -8
          }
        }
      ]
    },


    {
      "comments": [ "Rule to read sensors on IR35221 regulators using the",
                    "PMBus interface" ],
      "id": "read_sensors_ir35221_rule",
      "actions": [
        {
          "comments": [ "Read output current from READ_IOUT" ],
          "pmbus_read_sensor": {
            "type": "iout",
            "command": "0x8C",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read highest output current from MFR_IOUT_PEAK" ],
          "pmbus_read_sensor": {
            "type": "iout_peak",
            "command": "0xC7",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read lowest output current from MFR_IOUT_VALLEY" ],
          "pmbus_read_sensor": {
            "type": "iout_valley",
            "command": "0xCB",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read output power from READ_POUT" ],
          "pmbus_read_sensor": {
            "type": "pout",
            "command": "0x96",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read temperature from READ_TEMPERATURE_1" ],
          "pmbus_read_sensor": {
            "type": "temperature",
            "command": "0x8D",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read highest temperature from MFR_TEMP_PEAK" ],
          "pmbus_read_sensor": {
            "type": "temperature_peak",
            "command": "0xC8",
            "format": "linear_11"
          }
        },
        {
          "comments": [ "Read output voltage from READ_VOUT" ],
          "pmbus_read_sensor": {
            "type": "vout",
            "command": "0x8B",
            "format": "linear_16"
          }
        },
        {
          "comments": [ "Read highest output voltage from MFR_VOUT_PEAK" ],
          "pmbus_read_sensor": {
            "type": "vout_peak",
            "command": "0xC6",
            "format": "linear_16"
          }
        },
        {
          "comments": [ "Read lowest output voltage from MFR_VOUT_VALLEY" ],
          "pmbus_read_sensor": {
            "type": "vout_valley",
            "command": "0xCA",
            "format": "linear_16"
          }
        }
      ]
    },


    {
      "comments": [ "Rule to read sensors on PAGE 0 of IR35221 regulators",
                    "using the PMBus interface" ],
      "id": "read_sensors_ir35221_page0_rule",
      "actions": [
        { "run_rule": "set_page0_rule" },
        { "run_rule": "read_sensors_ir35221_rule" }
      ]
    },


    {
      "comments": [ "Rule to read sensors on PAGE 1 of IR35221 regulators",
                    "using the PMBus interface" ],
      "id": "read_sensors_ir35221_page1_rule",
      "actions": [
        { "run_rule": "set_page1_rule" },
        { "run_rule": "read_sensors_ir35221_rule" }
      ]
    },


    {
      "comments": [ "Rule to read sensors on PAGE 0 of XDPE132G5C regulators",
                    "using the PMBus interface" ],
      "id": "read_sensors_xdpe132g5c_page0_rule",
      "actions": [
        {
          "comments": [ "Can use same rule as for IR35221 regulators" ],
          "run_rule": "read_sensors_ir35221_page0_rule"
        }
      ]
    },


    {
      "comments": [ "Rule to determine if the current system is a 2S4U/2S2U.",
                    "2S systems have more regulators on the Nisqually system",
                    "planar than 1S systems.  Must return true if system is a",
                    "2S4U/2S2U and false if system is a 1S4U." ],
      "id": "is_2s_system_rule",
      "actions": [
        {
          "comments": [ "Check whether the CCIN VPD keyword on the Nisqually",
                        "system planar has the value for 2S4U or 2S2U" ],
          "or": [
            { "compare_vpd": { "fru": "system/chassis/motherboard", "keyword": "CCIN", "value": "2E2F" } },
            { "compare_vpd": { "fru": "system/chassis/motherboard", "keyword": "CCIN", "value": "2E2D" } }
          ]
        }
      ]
    },


    {
      "comments": [ "Rule to determine if pass 2 or higher Nisqually",
                    "backplane is present.  Must return true if present and",
                    "false otherwise." ],
      "id": "is_pass2_nisqually_rule",
      "actions": [
        {
          "comments": [ "Check that the PartNumber VPD keyword on the",
                        "Nisqually system planar is not the value for",
                        "the pass 1 2U or 4U." ],
          "not":
          {
            "or": [
              { "compare_vpd": { "fru": "system/chassis/motherboard", "keyword": "PartNumber", "value": "02WG656" } },
              { "compare_vpd": { "fru": "system/chassis/motherboard", "keyword": "PartNumber", "value": "02WG678" } }
            ]
          }
        }
      ]
    },


    {
      "comments": [ "Rule to determine if the VRM FRU for DCM-1 is present.",
                    "Must return true if VRM is present and false if VRM is",
                    "missing." ],
      "id": "is_dcm1_vrm_present_rule",
      "actions": [
        {
          "comments": [ "Check whether the VRM FRU is present OR the DCM-1",
                        "FRU is present.  This provides a double check in",
                        "case the VRM presence line is not working.  If DCM-1",
                        "is present, the associated VRM should be too." ],
          "or": [
            { "compare_presence": { "fru": "system/chassis/motherboard/vdd_vrm1", "value": true } },
            { "compare_presence": { "fru": "system/chassis/motherboard/dcm1/cpu0",     "value": true } }
          ]
        }
      ]
    },


    {
      "comments": [ "Rule to determine if a Flett card is present in slot C8.",
                    "This requires a Nisqually pass2+ due to I2C bus number",
                    "differences between pass 1 and pass 2.",
                    "Pass 1 and pass 2 Fletts are both supported.",
                    "Must return true if present and false otherwise." ],
      "id": "is_flett_c8_present_rule",
      "actions": [
        {
          "if": {
            "condition": {
              "comments": [ "Check if the Nisqually is pass 2" ],
              "run_rule": "is_pass2_nisqually_rule"
            },
            "then": [
              {
                "comments": [ "Check if a card is present in slot C8" ],
                "if": {
                  "condition": {
                    "compare_presence": {
                        "fru": "system/chassis/motherboard/pcieslot8/pcie_card8",
                        "value": true
                    }
                  },
                  "then": [
                    {
                      "comments": [ "Check if card has Flett CCIN keyword" ],
                      "compare_vpd": {
                        "fru": "system/chassis/motherboard/pcieslot8/pcie_card8",
                        "keyword": "CCIN",
                        "value": "6B87"
                      }
                    }
                  ]
                }
              }
            ]
          }
        }
      ]
    },


    {
      "comments": [ "Rule to determine if a Flett card is present in slot C9.",
                    "This requires a Nisqually pass2+ due to I2C bus number",
                    "differences between pass 1 and pass 2.",
                    "This also requires the Flett to be pass 2 because the",
                    "pass 1 regulator has a different I2C address.",
                    "Must return true if present and false otherwise." ],
      "id": "is_flett_c9_present_rule",
      "actions": [
        {
          "if": {
            "condition": {
              "comments": [ "Check if the Nisqually is pass 2" ],
              "run_rule": "is_pass2_nisqually_rule"
            },
            "then": [
              {
                "comments": [ "Check if a card is present in slot C9" ],
                "if": {
                  "condition": {
                    "compare_presence": {
                        "fru": "system/chassis/motherboard/pcieslot9/pcie_card9",
                        "value": true
                    }
                  },
                  "then": [
                    {
                      "comments": [ "Check if card has Flett CCIN keyword" ],
                      "if": {
                        "condition": {
                          "compare_vpd": {
                            "fru": "system/chassis/motherboard/pcieslot9/pcie_card9",
                            "keyword": "CCIN",
                            "value": "6B87"
                          }
                        },
                        "then": [
                          {
                            "comments": [
                                "Check that card does not have a pass 1",
                                "part number"
                            ],
                            "not": {
                              "or": [
                                {
                                  "compare_vpd": {
                                    "fru": "system/chassis/motherboard/pcieslot9/pcie_card9",
                                    "keyword": "PartNumber",
                                    "value": "03FL194"
                                  }
                                },
                                {
                                  "compare_vpd": {
                                    "fru": "system/chassis/motherboard/pcieslot9/pcie_card9",
                                    "keyword": "PartNumber",
                                    "value": "03FL204"
                                  }
                                }
                              ]
                            }
                          }
                        ]
                      }
                    }
                  ]
                }
              }
            ]
          }
        }
      ]
    },


    {
      "comments": [ "Rule to determine if a Flett card is present in slot C10.",
                    "This requires a Nisqually pass2+ due to I2C bus number",
                    "differences between pass 1 and pass 2.",
                    "This also requires the Flett to be pass 2 because the",
                    "pass 1 regulator has a different I2C address.",
                    "Must return true if present and false otherwise." ],
      "id": "is_flett_c10_present_rule",
      "actions": [
        {
          "if": {
            "condition": {
              "comments": [ "Check if the Nisqually is pass 2" ],
              "run_rule": "is_pass2_nisqually_rule"
            },
            "then": [
              {
                "comments": [ "Check if a card is present in slot C10" ],
                "if": {
                  "condition": {
                    "compare_presence": {
                        "fru": "system/chassis/motherboard/pcieslot10/pcie_card10",
                        "value": true
                    }
                  },
                  "then": [
                    {
                      "comments": [ "Check if card has Flett CCIN keyword" ],
                      "if": {
                        "condition": {
                          "compare_vpd": {
                            "fru": "system/chassis/motherboard/pcieslot10/pcie_card10",
                            "keyword": "CCIN",
                            "value": "6B87"
                          }
                        },
                        "then": [
                          {
                            "comments": [
                                "Check that card does not have a pass 1",
                                "part number"
                            ],
                            "not": {
                              "or": [
                                {
                                  "compare_vpd": {
                                    "fru": "system/chassis/motherboard/pcieslot10/pcie_card10",
                                    "keyword": "PartNumber",
                                    "value": "03FL194"
                                  }
                                },
                                {
                                  "compare_vpd": {
                                    "fru": "system/chassis/motherboard/pcieslot10/pcie_card10",
                                    "keyword": "PartNumber",
                                    "value": "03FL204"
                                  }
                                }
                              ]
                            }
                          }
                        ]
                      }
                    }
                  ]
                }
              }
            ]
          }
        }
      ]
    },


    {
      "comments": [ "Rule to determine if a Flett card is present in slot C11.",
                    "This requires a Nisqually pass2+ due to I2C bus number",
                    "differences between pass 1 and pass 2.",
                    "Pass 1 and pass 2 Fletts are both supported.",
                    "Must return true if present and false otherwise." ],
      "id": "is_flett_c11_present_rule",
      "actions": [
        {
          "if": {
            "condition": {
              "comments": [ "Check if the Nisqually is pass 2" ],
              "run_rule": "is_pass2_nisqually_rule"
            },
            "then": [
              {
                "comments": [ "Check if a card is present in slot C11" ],
                "if": {
                  "condition": {
                    "compare_presence": {
                        "fru": "system/chassis/motherboard/pcieslot11/pcie_card11",
                        "value": true
                    }
                  },
                  "then": [
                    {
                      "comments": [ "Check if card has Flett CCIN keyword" ],
                      "compare_vpd": {
                        "fru": "system/chassis/motherboard/pcieslot11/pcie_card11",
                        "keyword": "CCIN",
                        "value": "6B87"
                      }
                    }
                  ]
                }
              }
            ]
          }
        }
      ]
    }
  ],


  "chassis": [
    {
      "comments": [ "Chassis (drawer) 1" ],
      "number": 1,
      "inventory_path": "system/chassis",
      "devices": [
        {
          "comments": [ "AVDD / IR38064: Primary PMBus Interface",
                        "In schematic: bus 4 (1-based), address 0xE2 (8-bit)" ],
          "id": "avdd_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 3, "address": "0x71" },
          "presence_detection": { "rule_id": "is_pass2_nisqually_rule" },
          "rails": [
            {
              "id": "avdd_rail",
              "sensor_monitoring": { "rule_id": "read_sensors_ir38064_rule" }
            }
          ]
        },


        {
          "comments": [ "3.3VA / TPS549D22",
                        "In schematic: bus 9 (1-based), address 0x36 (8-bit)",
                        "Does not have power at standby; cannot be configured",
                        "Does not support the PMBus PAGE command" ],
          "id": "3_3va_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 8, "address": "0x1B" },
          "rails": [
            {
              "id": "3_3va_rail"
            }
          ]
        },


        {
          "comments": [ "3.3VB / TPS549D22",
                        "In schematic: bus 4 (1-based), address 0x38 (8-bit)",
                        "Does not have power at standby; cannot be configured",
                        "Does not support the PMBus PAGE command" ],
          "id": "3_3vb_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 3, "address": "0x1C" },
          "rails": [
            {
              "id": "3_3vb_rail"
            }
          ]
        },


        {
          "comments": [ "VDDp0 DCM 0 / XDPE132G5C: Primary PMBus Interface",
                        "In schematic: bus 10 (1-based), address 0xE2 (8-bit)" ],
          "id": "vdd_p0_dcm0_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard/vdd_vrm0",
          "i2c_interface": { "bus": 9, "address": "0x71" },
          "rails": [
            {
              "id": "vdd_p0_dcm0_rail",
              "configuration": {
                "volts": 0.9,
                "rule_id": "configure_vdd_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_xdpe132g5c_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "VDDp1 DCM 0 / XDPE132G5C: Primary PMBus Interface",
                        "In schematic: bus 10 (1-based), address 0xE0 (8-bit)" ],
          "id": "vdd_p1_dcm0_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard/vdd_vrm0",
          "i2c_interface": { "bus": 9, "address": "0x70" },
          "rails": [
            {
              "id": "vdd_p1_dcm0_rail",
              "configuration": {
                "volts": 0.9,
                "rule_id": "configure_vdd_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_xdpe132g5c_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "VDDp0 DCM 1 / XDPE132G5C: Primary PMBus Interface",
                        "In schematic: bus 11 (1-based), address 0xE2 (8-bit)" ],
          "id": "vdd_p0_dcm1_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard/vdd_vrm1",
          "i2c_interface": { "bus": 10, "address": "0x71" },
          "presence_detection": { "rule_id": "is_dcm1_vrm_present_rule" },
          "rails": [
            {
              "id": "vdd_p0_dcm1_rail",
              "configuration": {
                "volts": 0.9,
                "rule_id": "configure_vdd_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_xdpe132g5c_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "VDDp1 DCM 1 / XDPE132G5C: Primary PMBus Interface",
                        "In schematic: bus 11 (1-based), address 0xE0 (8-bit)" ],
          "id": "vdd_p1_dcm1_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard/vdd_vrm1",
          "i2c_interface": { "bus": 10, "address": "0x70" },
          "presence_detection": { "rule_id": "is_dcm1_vrm_present_rule" },
          "rails": [
            {
              "id": "vdd_p1_dcm1_rail",
              "configuration": {
                "volts": 0.9,
                "rule_id": "configure_vdd_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_xdpe132g5c_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "VDN & VCSp0 DCM 0 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 10 (1-based), address 0xE4 (8-bit)" ],
          "id": "vdn_vcs_p0_dcm0_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 9, "address": "0x72" },
          "rails": [
            {
              "comments": [ "PMBus PAGE 0 rail" ],
              "id": "vdn_dcm0_rail",
              "configuration": {
                "volts": 0.9,
                "rule_id": "configure_vdn_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            },
            {
              "comments": [ "PMBus PAGE 1 rail" ],
              "id": "vcs_p0_dcm0_rail",
              "configuration": {
                "volts": 1.0,
                "rule_id": "configure_vcs_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page1_rule" }
            }
          ]
        },


        {
          "comments": [ "VIO & VCSp1 DCM 0 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 10 (1-based), address 0xE6 (8-bit)" ],
          "id": "vio_vcs_p1_dcm0_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 9, "address": "0x73" },
          "rails": [
            {
              "comments": [ "PMBus PAGE 0 rail" ],
              "id": "vio_dcm0_rail",
              "configuration": {
                "volts": 1.02,
                "rule_id": "configure_vio_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            },
            {
              "comments": [ "PMBus PAGE 1 rail" ],
              "id": "vcs_p1_dcm0_rail",
              "configuration": {
                "volts": 1.0,
                "rule_id": "configure_vcs_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page1_rule" }
            }
          ]
        },


        {
          "comments": [ "VDN & VCSp0 DCM 1 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 11 (1-based), address 0xE4 (8-bit)" ],
          "id": "vdn_vcs_p0_dcm1_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 10, "address": "0x72" },
          "presence_detection": { "rule_id": "is_2s_system_rule" },
          "rails": [
            {
              "comments": [ "PMBus PAGE 0 rail" ],
              "id": "vdn_dcm1_rail",
              "configuration": {
                "volts": 0.9,
                "rule_id": "configure_vdn_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            },
            {
              "comments": [ "PMBus PAGE 1 rail" ],
              "id": "vcs_p0_dcm1_rail",
              "configuration": {
                "volts": 1.0,
                "rule_id": "configure_vcs_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page1_rule" }
            }
          ]
        },


        {
          "comments": [ "VIO & VCSp1 DCM 1 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 11 (1-based), address 0xE6 (8-bit)" ],
          "id": "vio_vcs_p1_dcm1_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 10, "address": "0x73" },
          "presence_detection": { "rule_id": "is_2s_system_rule" },
          "rails": [
            {
              "comments": [ "PMBus PAGE 0 rail" ],
              "id": "vio_dcm1_rail",
              "configuration": {
                "volts": 1.02,
                "rule_id": "configure_vio_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            },
            {
              "comments": [ "PMBus PAGE 1 rail" ],
              "id": "vcs_p1_dcm1_rail",
              "configuration": {
                "volts": 1.0,
                "rule_id": "configure_vcs_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page1_rule" }
            }
          ]
        },


        {
          "comments": [ "VPCIe DCM 0 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 10 (1-based), address 0xE8 (8-bit)" ],
          "id": "vpcie_dcm0_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 9, "address": "0x74" },
          "rails": [
            {
              "id": "vpcie_dcm0_rail",
              "configuration": {
                "volts": 0.86,
                "rule_id": "configure_vpcie_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "VPCIe DCM 1 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 11 (1-based), address 0xE8 (8-bit)" ],
          "id": "vpcie_dcm1_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard",
          "i2c_interface": { "bus": 10, "address": "0x74" },
          "presence_detection": { "rule_id": "is_2s_system_rule" },
          "rails": [
            {
              "id": "vpcie_dcm1_rail",
              "configuration": {
                "volts": 0.86,
                "rule_id": "configure_vpcie_rule"
              },
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "Flett Slot C8 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 7 (1-based) mux channel 3,",
                        "address 0xEC (8-bit).",
                        "BMC I2C bus alias 28" ],
          "id": "flett_slot_c8_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard/pcieslot8/pcie_card8",
          "i2c_interface": { "bus": 28, "address": "0x76" },
          "presence_detection": { "rule_id": "is_flett_c8_present_rule" },
          "rails": [
            {
              "id": "flett_slot_c8_rail",
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "Flett Slot C9 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 7 (1-based) mux channel 2,",
                        "address 0xEC (8-bit).",
                        "BMC I2C bus alias 27" ],
          "id": "flett_slot_c9_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard/pcieslot9/pcie_card9",
          "i2c_interface": { "bus": 27, "address": "0x76" },
          "presence_detection": { "rule_id": "is_flett_c9_present_rule" },
          "rails": [
            {
              "id": "flett_slot_c9_rail",
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "Flett Slot C11 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 12 (1-based) mux channel 1,",
                        "address 0xEC (8-bit).",
                        "BMC I2C bus alias 30" ],
          "id": "flett_slot_c11_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard/pcieslot11/pcie_card11",
          "i2c_interface": { "bus": 30, "address": "0x76" },
          "presence_detection": { "rule_id": "is_flett_c11_present_rule" },
          "rails": [
            {
              "id": "flett_slot_c11_rail",
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            }
          ]
        },


        {
          "comments": [ "Flett Slot C10 / IR35221: Primary PMBus Interface",
                        "In schematic: bus 12 (1-based) mux channel 0,",
                        "address 0xEC (8-bit).",
                        "BMC I2C bus alias 29" ],
          "id": "flett_slot_c10_regulator",
          "is_regulator": true,
          "fru": "system/chassis/motherboard/pcieslot10/pcie_card10",
          "i2c_interface": { "bus": 29, "address": "0x76" },
          "presence_detection": { "rule_id": "is_flett_c10_present_rule" },
          "rails": [
            {
              "id": "flett_slot_c10_rail",
              "sensor_monitoring": { "rule_id": "read_sensors_ir35221_page0_rule" }
            }
          ]
        }
      ]
    }
  ]
}